Improvements and notebooks
This commit is contained in:
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34 changed files with 2669 additions and 1374 deletions
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@ -30,7 +30,7 @@ python3 display.py --saturation 1.5 --contrast 1.1 --gamma 0.85
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4. Sends to e-ink display driver
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4. Sends to e-ink display driver
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**`src/lib/immich.py`** — Immich API client. Key behaviors:
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**`src/lib/immich.py`** — Immich API client. Key behaviors:
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- `PhotoHistory` tracks displayed photos in `photo_history.json` to avoid repeats (resets after 7 days). Asset is only marked displayed after a successful download.
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- `_load_history()` / `_save_history()` track displayed photos in `photo_history.json` to avoid repeats (resets after 7 days). Asset is only marked displayed after a successful download.
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- `_pick_weighted_random()` biases selection: 20% favorites, 50% recently-added (last 30 days, by Immich `createdAt`), otherwise uniform random
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- `_pick_weighted_random()` biases selection: 20% favorites, 50% recently-added (last 30 days, by Immich `createdAt`), otherwise uniform random
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- Filters photos by orientation (portrait/landscape) based on EXIF data including rotation tags. Raises if nothing matches the requested orientation.
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- Filters photos by orientation (portrait/landscape) based on EXIF data including rotation tags. Raises if nothing matches the requested orientation.
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- Downloads preview-size thumbnails, not originals
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- Downloads preview-size thumbnails, not originals
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@ -49,6 +49,13 @@ python3 display.py --saturation 1.5 --contrast 1.1 --gamma 0.85
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**`src/lib/progress.py`** — Simple terminal progress bar.
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**`src/lib/progress.py`** — Simple terminal progress bar.
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**`notebooks/`** — Off-Pi observable comparisons covering pipeline stages. Run via the
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uv-managed env (`uv run jupyter lab notebooks/...`). The notebooks share `_helpers.py`
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(bootstrap, Immich client, pool fetch, image cache) and `_dither.py` (migrated from the
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former `dither_test/`):
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- `crop_compare.ipynb` — face-aware crop vs. centre crop on the most-divergent picks
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- `dither_compare.ipynb` — error-diffusion + ordered dithering algorithms with timing
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## Key Constraints
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## Key Constraints
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- **Always call `epd.sleep()` after display** — the driver uses a try/finally pattern for this
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- **Always call `epd.sleep()` after display** — the driver uses a try/finally pattern for this
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@ -1,164 +0,0 @@
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# Dithering Test Suite
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Local testing suite for comparing dithering algorithms on the 6-color e-ink display.
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## Setup
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```bash
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cd dither_test
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pip install pillow numpy
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```
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For the interactive preview (optional):
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```bash
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# Tkinter is usually included with Python
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# On Debian/Ubuntu if missing:
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sudo apt-get install python3-tk
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```
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## Quick Start
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### Compare all algorithms
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```bash
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python compare.py photo.jpg --html
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# Open dither_output/photo_report.html in browser
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```
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### Interactive preview
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```bash
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python preview.py photo.jpg
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# Use arrow keys to cycle through algorithms
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```
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## Tools
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### `compare.py` - Batch Comparison Tool
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Generate comparison outputs for multiple dithering algorithms.
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```bash
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# Compare all algorithms, save individual images
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python compare.py image.jpg
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# Compare specific algorithms only
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python compare.py image.jpg -a floyd_steinberg atkinson jarvis
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# Generate visual grid comparison
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python compare.py image.jpg --grid
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# Generate HTML report (recommended)
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python compare.py image.jpg --html
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# Side-by-side comparison of two algorithms
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python compare.py image.jpg --side-by-side atkinson pil_fs
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# With rotation
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python compare.py image.jpg --html -r 90
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# List available algorithms
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python compare.py --list
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```
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### `preview.py` - Interactive Preview
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Real-time preview with keyboard navigation.
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```bash
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python preview.py image.jpg
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```
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**Keyboard shortcuts:**
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- `←` / `→` or `A` / `D` - Cycle through algorithms
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- `R` - Rotate image (0° → 90° → 180° → 270°)
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- `S` - Save current result
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- `O` - Open new image
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- `Q` or `Esc` - Quit
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### `dither_algorithms.py` - Algorithm Library
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Use in your own scripts:
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```python
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from dither_algorithms import apply_dithering, get_algorithm_names
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from PIL import Image
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img = Image.open('photo.jpg')
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dithered = apply_dithering(img, 'atkinson')
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dithered.save('output.png')
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# List all algorithms
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print(get_algorithm_names())
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```
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## Available Algorithms
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### Error Diffusion (spread quantization error to neighbors)
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| Algorithm | Description |
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|-----------|-------------|
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| `floyd_steinberg` | Classic (1976), good balance of speed and quality |
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| `floyd_steinberg_weighted` | With perceptual color weighting |
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| `atkinson` | Bill Atkinson (Apple), cleaner with 75% error diffusion |
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| `atkinson_weighted` | Atkinson with perceptual weighting |
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| `jarvis` | Jarvis-Judice-Ninke, smoother gradients, slower |
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| `stucki` | Similar to JJN with modified weights |
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| `sierra` | Full Sierra, balanced results |
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| `sierra_lite` | Faster Sierra variant |
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| `burkes` | Simplified two-row diffusion |
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### Ordered Dithering (threshold matrix pattern)
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| Algorithm | Description |
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|-----------|-------------|
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| `bayer2` | 2×2 Bayer matrix, visible pattern |
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| `bayer4` | 4×4 Bayer matrix, common choice |
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| `bayer8` | 8×8 Bayer matrix, finer pattern |
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| `bayer4_strong` | 4×4 with increased strength |
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### PIL Built-in (for reference)
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| Algorithm | Description |
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|-----------|-------------|
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| `none` | No dithering, nearest color only |
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| `pil_fs` | PIL's Floyd-Steinberg implementation |
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## Recommendations
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For **photographic images**: `atkinson` or `floyd_steinberg_weighted`
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- Better color accuracy, smoother gradients
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For **graphics/illustrations**: `bayer4` or `bayer8`
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- Consistent patterns, no "wormy" artifacts
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For **high contrast images**: `atkinson`
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- Cleaner edges, less noise in solid areas
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For **fastest processing**: `sierra_lite` or `pil_fs`
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- Good quality with faster execution
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## Output
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Results are saved to `dither_output/` by default:
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```
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dither_output/
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├── photo_source.png # Prepared source (800×480)
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├── photo_atkinson.png # Each algorithm result
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├── photo_floyd_steinberg.png
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├── ...
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├── photo_grid.png # Grid comparison (--grid)
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└── photo_report.html # HTML report (--html)
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```
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## 6-Color Palette
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The e-ink display uses these colors:
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| Color | RGB |
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|--------|-----|
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| Black | (0, 0, 0) |
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| White | (255, 255, 255) |
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| Yellow | (255, 255, 0) |
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| Red | (255, 0, 0) |
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| Blue | (0, 0, 255) |
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| Green | (0, 255, 0) |
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# Dithering Test Suite for 6-Color E-Ink Display
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from .dither_algorithms import (
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apply_dithering,
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get_algorithm_names,
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DITHER_ALGORITHMS,
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PALETTE_RGB,
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PALETTE_NAMES,
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)
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__all__ = [
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'apply_dithering',
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'get_algorithm_names',
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'DITHER_ALGORITHMS',
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'PALETTE_RGB',
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'PALETTE_NAMES',
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]
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#!/usr/bin/env python3
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"""
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Dithering Comparison Tool for 6-Color E-Ink Display
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Generates side-by-side comparisons of different dithering algorithms
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to help select the best option for your images.
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Usage:
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python compare.py image.jpg # Compare all algorithms
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python compare.py image.jpg -a floyd_steinberg atkinson # Compare specific
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python compare.py image.jpg --grid # Generate grid comparison
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python compare.py image.jpg --html # Generate HTML report
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python compare.py --list # List available algorithms
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"""
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import argparse
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import os
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import sys
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import time
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from pathlib import Path
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from typing import List, Optional
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from PIL import Image
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from dither_algorithms import (
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DITHER_ALGORITHMS,
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apply_dithering,
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get_algorithm_names,
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PALETTE_RGB,
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)
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# Display dimensions
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DISPLAY_WIDTH = 800
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DISPLAY_HEIGHT = 480
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def prepare_image(image_path: str, orientation: int = 0) -> Image.Image:
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"""Load and prepare image for the display dimensions."""
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img = Image.open(image_path).convert('RGB')
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# Apply rotation
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if orientation == 90:
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img = img.transpose(Image.Transpose.ROTATE_270)
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elif orientation == 180:
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img = img.transpose(Image.Transpose.ROTATE_180)
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elif orientation == 270:
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img = img.transpose(Image.Transpose.ROTATE_90)
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# Calculate scaling to fit display
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target_w, target_h = DISPLAY_WIDTH, DISPLAY_HEIGHT
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scale = min(target_w / img.width, target_h / img.height)
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new_w = int(img.width * scale)
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new_h = int(img.height * scale)
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# Resize with high-quality resampling
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img = img.resize((new_w, new_h), Image.Resampling.LANCZOS)
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# Center on white canvas
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canvas = Image.new('RGB', (target_w, target_h), (255, 255, 255))
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x = (target_w - new_w) // 2
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y = (target_h - new_h) // 2
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canvas.paste(img, (x, y))
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return canvas
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def run_comparison(
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image_path: str,
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algorithms: Optional[List[str]] = None,
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output_dir: str = 'dither_output',
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orientation: int = 0,
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) -> dict:
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"""
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Run dithering comparison and save results.
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Returns dict with algorithm names as keys and tuples of (output_path, duration) as values.
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"""
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if algorithms is None:
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algorithms = get_algorithm_names()
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# Prepare output directory
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output_path = Path(output_dir)
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output_path.mkdir(parents=True, exist_ok=True)
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# Get base name for outputs
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base_name = Path(image_path).stem
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# Load and prepare source image
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print(f"Loading and preparing: {image_path}")
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source = prepare_image(image_path, orientation)
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# Save prepared source for reference
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source_out = output_path / f"{base_name}_source.png"
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source.save(source_out)
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print(f" Saved prepared source: {source_out}")
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results = {}
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for algo_name in algorithms:
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if algo_name not in DITHER_ALGORITHMS:
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print(f" Warning: Unknown algorithm '{algo_name}', skipping")
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continue
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algo_info = DITHER_ALGORITHMS[algo_name]
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print(f" Processing: {algo_info['name']}...", end=' ', flush=True)
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start_time = time.time()
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dithered = apply_dithering(source, algo_name)
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duration = time.time() - start_time
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out_file = output_path / f"{base_name}_{algo_name}.png"
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dithered.save(out_file)
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results[algo_name] = (str(out_file), duration)
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print(f"{duration:.2f}s -> {out_file}")
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return results
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def create_comparison_grid(
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image_path: str,
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algorithms: Optional[List[str]] = None,
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output_dir: str = 'dither_output',
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orientation: int = 0,
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cols: int = 3,
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) -> str:
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"""Create a single image with all algorithms in a grid layout."""
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if algorithms is None:
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algorithms = get_algorithm_names()
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output_path = Path(output_dir)
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output_path.mkdir(parents=True, exist_ok=True)
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base_name = Path(image_path).stem
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source = prepare_image(image_path, orientation)
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# Calculate grid dimensions
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n_images = len(algorithms) + 1 # +1 for source
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rows = (n_images + cols - 1) // cols
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# Thumbnail size (scaled down for grid)
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thumb_w = DISPLAY_WIDTH // 2
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thumb_h = DISPLAY_HEIGHT // 2
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padding = 10
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label_height = 30
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# Create grid canvas
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grid_w = cols * (thumb_w + padding) + padding
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grid_h = rows * (thumb_h + label_height + padding) + padding
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grid = Image.new('RGB', (grid_w, grid_h), (240, 240, 240))
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# Import for text rendering
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try:
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from PIL import ImageDraw, ImageFont
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draw = ImageDraw.Draw(grid)
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try:
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font = ImageFont.truetype("/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf", 16)
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except:
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font = ImageFont.load_default()
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except ImportError:
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draw = None
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font = None
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def add_to_grid(img: Image.Image, label: str, idx: int):
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row = idx // cols
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col = idx % cols
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x = padding + col * (thumb_w + padding)
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y = padding + row * (thumb_h + label_height + padding)
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# Resize for thumbnail
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thumb = img.resize((thumb_w, thumb_h), Image.Resampling.LANCZOS)
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grid.paste(thumb, (x, y + label_height))
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# Add label
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if draw:
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draw.text((x + 5, y + 5), label, fill=(0, 0, 0), font=font)
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# Add source image first
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add_to_grid(source, "Original (Prepared)", 0)
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# Process and add each algorithm
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for i, algo_name in enumerate(algorithms, 1):
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|
||||||
if algo_name not in DITHER_ALGORITHMS:
|
|
||||||
continue
|
|
||||||
algo_info = DITHER_ALGORITHMS[algo_name]
|
|
||||||
print(f" Grid: {algo_info['name']}...")
|
|
||||||
dithered = apply_dithering(source, algo_name)
|
|
||||||
add_to_grid(dithered, algo_info['name'], i)
|
|
||||||
|
|
||||||
# Save grid
|
|
||||||
grid_file = output_path / f"{base_name}_grid.png"
|
|
||||||
grid.save(grid_file)
|
|
||||||
print(f"Grid saved: {grid_file}")
|
|
||||||
|
|
||||||
return str(grid_file)
|
|
||||||
|
|
||||||
|
|
||||||
def create_side_by_side(
|
|
||||||
image_path: str,
|
|
||||||
algo1: str,
|
|
||||||
algo2: str,
|
|
||||||
output_dir: str = 'dither_output',
|
|
||||||
orientation: int = 0,
|
|
||||||
) -> str:
|
|
||||||
"""Create a side-by-side comparison of two algorithms."""
|
|
||||||
output_path = Path(output_dir)
|
|
||||||
output_path.mkdir(parents=True, exist_ok=True)
|
|
||||||
|
|
||||||
base_name = Path(image_path).stem
|
|
||||||
source = prepare_image(image_path, orientation)
|
|
||||||
|
|
||||||
info1 = DITHER_ALGORITHMS[algo1]
|
|
||||||
info2 = DITHER_ALGORITHMS[algo2]
|
|
||||||
|
|
||||||
print(f" Processing {info1['name']}...")
|
|
||||||
img1 = apply_dithering(source, algo1)
|
|
||||||
|
|
||||||
print(f" Processing {info2['name']}...")
|
|
||||||
img2 = apply_dithering(source, algo2)
|
|
||||||
|
|
||||||
# Create side-by-side
|
|
||||||
padding = 20
|
|
||||||
label_h = 40
|
|
||||||
width = DISPLAY_WIDTH * 2 + padding * 3
|
|
||||||
height = DISPLAY_HEIGHT + padding * 2 + label_h
|
|
||||||
|
|
||||||
canvas = Image.new('RGB', (width, height), (240, 240, 240))
|
|
||||||
canvas.paste(img1, (padding, padding + label_h))
|
|
||||||
canvas.paste(img2, (DISPLAY_WIDTH + padding * 2, padding + label_h))
|
|
||||||
|
|
||||||
# Add labels
|
|
||||||
try:
|
|
||||||
from PIL import ImageDraw, ImageFont
|
|
||||||
draw = ImageDraw.Draw(canvas)
|
|
||||||
try:
|
|
||||||
font = ImageFont.truetype("/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf", 20)
|
|
||||||
except:
|
|
||||||
font = ImageFont.load_default()
|
|
||||||
|
|
||||||
draw.text((padding + 10, padding + 5), info1['name'], fill=(0, 0, 0), font=font)
|
|
||||||
draw.text((DISPLAY_WIDTH + padding * 2 + 10, padding + 5), info2['name'], fill=(0, 0, 0), font=font)
|
|
||||||
except ImportError:
|
|
||||||
pass
|
|
||||||
|
|
||||||
out_file = output_path / f"{base_name}_{algo1}_vs_{algo2}.png"
|
|
||||||
canvas.save(out_file)
|
|
||||||
print(f"Side-by-side saved: {out_file}")
|
|
||||||
|
|
||||||
return str(out_file)
|
|
||||||
|
|
||||||
|
|
||||||
def generate_html_report(
|
|
||||||
image_path: str,
|
|
||||||
results: dict,
|
|
||||||
output_dir: str = 'dither_output',
|
|
||||||
) -> str:
|
|
||||||
"""Generate an HTML report for easy comparison."""
|
|
||||||
output_path = Path(output_dir)
|
|
||||||
base_name = Path(image_path).stem
|
|
||||||
|
|
||||||
html = f"""<!DOCTYPE html>
|
|
||||||
<html>
|
|
||||||
<head>
|
|
||||||
<title>Dithering Comparison: {base_name}</title>
|
|
||||||
<style>
|
|
||||||
body {{
|
|
||||||
font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
|
|
||||||
background: #1a1a2e;
|
|
||||||
color: #eee;
|
|
||||||
margin: 0;
|
|
||||||
padding: 20px;
|
|
||||||
}}
|
|
||||||
h1 {{ color: #00d9ff; margin-bottom: 10px; }}
|
|
||||||
.subtitle {{ color: #888; margin-bottom: 30px; }}
|
|
||||||
.grid {{
|
|
||||||
display: grid;
|
|
||||||
grid-template-columns: repeat(auto-fill, minmax(420px, 1fr));
|
|
||||||
gap: 20px;
|
|
||||||
}}
|
|
||||||
.card {{
|
|
||||||
background: #16213e;
|
|
||||||
border-radius: 12px;
|
|
||||||
overflow: hidden;
|
|
||||||
box-shadow: 0 4px 20px rgba(0,0,0,0.3);
|
|
||||||
}}
|
|
||||||
.card img {{
|
|
||||||
width: 100%;
|
|
||||||
height: auto;
|
|
||||||
display: block;
|
|
||||||
cursor: pointer;
|
|
||||||
transition: transform 0.2s;
|
|
||||||
}}
|
|
||||||
.card img:hover {{ transform: scale(1.02); }}
|
|
||||||
.card-info {{
|
|
||||||
padding: 15px;
|
|
||||||
}}
|
|
||||||
.card-title {{
|
|
||||||
font-size: 18px;
|
|
||||||
font-weight: 600;
|
|
||||||
color: #00d9ff;
|
|
||||||
margin-bottom: 5px;
|
|
||||||
}}
|
|
||||||
.card-desc {{
|
|
||||||
font-size: 13px;
|
|
||||||
color: #888;
|
|
||||||
margin-bottom: 8px;
|
|
||||||
}}
|
|
||||||
.card-time {{
|
|
||||||
font-size: 12px;
|
|
||||||
color: #666;
|
|
||||||
}}
|
|
||||||
.source-card {{
|
|
||||||
grid-column: 1 / -1;
|
|
||||||
max-width: 850px;
|
|
||||||
}}
|
|
||||||
.source-card img {{ max-width: 800px; }}
|
|
||||||
.palette {{
|
|
||||||
display: flex;
|
|
||||||
gap: 10px;
|
|
||||||
margin: 20px 0;
|
|
||||||
padding: 15px;
|
|
||||||
background: #16213e;
|
|
||||||
border-radius: 8px;
|
|
||||||
width: fit-content;
|
|
||||||
}}
|
|
||||||
.color-swatch {{
|
|
||||||
width: 40px;
|
|
||||||
height: 40px;
|
|
||||||
border-radius: 6px;
|
|
||||||
border: 2px solid #333;
|
|
||||||
}}
|
|
||||||
.fullscreen {{
|
|
||||||
display: none;
|
|
||||||
position: fixed;
|
|
||||||
top: 0;
|
|
||||||
left: 0;
|
|
||||||
width: 100%;
|
|
||||||
height: 100%;
|
|
||||||
background: rgba(0,0,0,0.95);
|
|
||||||
z-index: 1000;
|
|
||||||
justify-content: center;
|
|
||||||
align-items: center;
|
|
||||||
}}
|
|
||||||
.fullscreen img {{
|
|
||||||
max-width: 95%;
|
|
||||||
max-height: 95%;
|
|
||||||
}}
|
|
||||||
.fullscreen.active {{ display: flex; }}
|
|
||||||
</style>
|
|
||||||
</head>
|
|
||||||
<body>
|
|
||||||
<h1>Dithering Algorithm Comparison</h1>
|
|
||||||
<p class="subtitle">Source: {image_path}</p>
|
|
||||||
|
|
||||||
<h3>6-Color Palette</h3>
|
|
||||||
<div class="palette">
|
|
||||||
"""
|
|
||||||
|
|
||||||
for i, (color, name) in enumerate(zip(PALETTE_RGB, ['Black', 'White', 'Yellow', 'Red', 'Blue', 'Green'])):
|
|
||||||
r, g, b = color
|
|
||||||
html += f' <div class="color-swatch" style="background: rgb({r},{g},{b});" title="{name}"></div>\n'
|
|
||||||
|
|
||||||
html += """ </div>
|
|
||||||
|
|
||||||
<h3>Results</h3>
|
|
||||||
<div class="grid">
|
|
||||||
<div class="card source-card">
|
|
||||||
<img src="{base_name}_source.png" alt="Prepared Source" onclick="showFullscreen(this)">
|
|
||||||
<div class="card-info">
|
|
||||||
<div class="card-title">Original (Prepared)</div>
|
|
||||||
<div class="card-desc">Source image resized to 800x480 with LANCZOS resampling</div>
|
|
||||||
</div>
|
|
||||||
</div>
|
|
||||||
"""
|
|
||||||
|
|
||||||
for algo_name, (out_path, duration) in results.items():
|
|
||||||
algo_info = DITHER_ALGORITHMS[algo_name]
|
|
||||||
filename = Path(out_path).name
|
|
||||||
html += f"""
|
|
||||||
<div class="card">
|
|
||||||
<img src="{filename}" alt="{algo_info['name']}" onclick="showFullscreen(this)">
|
|
||||||
<div class="card-info">
|
|
||||||
<div class="card-title">{algo_info['name']}</div>
|
|
||||||
<div class="card-desc">{algo_info['description']}</div>
|
|
||||||
<div class="card-time">Processing time: {duration:.2f}s</div>
|
|
||||||
</div>
|
|
||||||
</div>
|
|
||||||
"""
|
|
||||||
|
|
||||||
html += """
|
|
||||||
</div>
|
|
||||||
|
|
||||||
<div class="fullscreen" onclick="hideFullscreen()">
|
|
||||||
<img src="" id="fullscreen-img">
|
|
||||||
</div>
|
|
||||||
|
|
||||||
<script>
|
|
||||||
function showFullscreen(img) {
|
|
||||||
document.getElementById('fullscreen-img').src = img.src;
|
|
||||||
document.querySelector('.fullscreen').classList.add('active');
|
|
||||||
}
|
|
||||||
function hideFullscreen() {
|
|
||||||
document.querySelector('.fullscreen').classList.remove('active');
|
|
||||||
}
|
|
||||||
document.addEventListener('keydown', (e) => {
|
|
||||||
if (e.key === 'Escape') hideFullscreen();
|
|
||||||
});
|
|
||||||
</script>
|
|
||||||
</body>
|
|
||||||
</html>
|
|
||||||
"""
|
|
||||||
|
|
||||||
html_file = output_path / f"{base_name}_report.html"
|
|
||||||
html_file.write_text(html.replace('{base_name}', base_name))
|
|
||||||
print(f"HTML report saved: {html_file}")
|
|
||||||
|
|
||||||
return str(html_file)
|
|
||||||
|
|
||||||
|
|
||||||
def list_algorithms():
|
|
||||||
"""Print available algorithms with descriptions."""
|
|
||||||
print("\nAvailable Dithering Algorithms:")
|
|
||||||
print("=" * 70)
|
|
||||||
for name, info in DITHER_ALGORITHMS.items():
|
|
||||||
print(f"\n {name}")
|
|
||||||
print(f" Name: {info['name']}")
|
|
||||||
print(f" {info['description']}")
|
|
||||||
print()
|
|
||||||
|
|
||||||
|
|
||||||
def main():
|
|
||||||
parser = argparse.ArgumentParser(
|
|
||||||
description='Compare dithering algorithms for 6-color e-ink display',
|
|
||||||
formatter_class=argparse.RawDescriptionHelpFormatter,
|
|
||||||
epilog="""
|
|
||||||
Examples:
|
|
||||||
python compare.py photo.jpg # Compare all algorithms
|
|
||||||
python compare.py photo.jpg -a atkinson pil_fs # Compare specific algorithms
|
|
||||||
python compare.py photo.jpg --grid # Generate grid comparison
|
|
||||||
python compare.py photo.jpg --html # Generate HTML report
|
|
||||||
python compare.py photo.jpg --side-by-side atkinson floyd_steinberg
|
|
||||||
python compare.py --list # List available algorithms
|
|
||||||
"""
|
|
||||||
)
|
|
||||||
|
|
||||||
parser.add_argument('image', nargs='?', help='Input image file')
|
|
||||||
parser.add_argument('-a', '--algorithms', nargs='+',
|
|
||||||
help='Specific algorithms to compare (default: all)')
|
|
||||||
parser.add_argument('-o', '--output', default='dither_output',
|
|
||||||
help='Output directory (default: dither_output)')
|
|
||||||
parser.add_argument('--orientation', '-r', type=int, default=0,
|
|
||||||
choices=[0, 90, 180, 270],
|
|
||||||
help='Rotate image (degrees)')
|
|
||||||
parser.add_argument('--grid', action='store_true',
|
|
||||||
help='Generate grid comparison image')
|
|
||||||
parser.add_argument('--html', action='store_true',
|
|
||||||
help='Generate HTML comparison report')
|
|
||||||
parser.add_argument('--side-by-side', nargs=2, metavar=('ALGO1', 'ALGO2'),
|
|
||||||
help='Create side-by-side comparison of two algorithms')
|
|
||||||
parser.add_argument('--list', action='store_true',
|
|
||||||
help='List available algorithms')
|
|
||||||
|
|
||||||
args = parser.parse_args()
|
|
||||||
|
|
||||||
if args.list:
|
|
||||||
list_algorithms()
|
|
||||||
return
|
|
||||||
|
|
||||||
if not args.image:
|
|
||||||
parser.error("Image file is required (unless using --list)")
|
|
||||||
|
|
||||||
if not os.path.exists(args.image):
|
|
||||||
print(f"Error: File not found: {args.image}")
|
|
||||||
sys.exit(1)
|
|
||||||
|
|
||||||
print(f"\n{'='*60}")
|
|
||||||
print(f"Dithering Comparison Test Suite")
|
|
||||||
print(f"{'='*60}\n")
|
|
||||||
|
|
||||||
if args.side_by_side:
|
|
||||||
create_side_by_side(
|
|
||||||
args.image,
|
|
||||||
args.side_by_side[0],
|
|
||||||
args.side_by_side[1],
|
|
||||||
args.output,
|
|
||||||
args.orientation
|
|
||||||
)
|
|
||||||
elif args.grid:
|
|
||||||
create_comparison_grid(
|
|
||||||
args.image,
|
|
||||||
args.algorithms,
|
|
||||||
args.output,
|
|
||||||
args.orientation
|
|
||||||
)
|
|
||||||
else:
|
|
||||||
results = run_comparison(
|
|
||||||
args.image,
|
|
||||||
args.algorithms,
|
|
||||||
args.output,
|
|
||||||
args.orientation
|
|
||||||
)
|
|
||||||
|
|
||||||
if args.html:
|
|
||||||
generate_html_report(args.image, results, args.output)
|
|
||||||
|
|
||||||
print(f"\n{'='*60}")
|
|
||||||
print(f"Done! Output saved to: {args.output}/")
|
|
||||||
print(f"{'='*60}\n")
|
|
||||||
|
|
||||||
|
|
||||||
if __name__ == '__main__':
|
|
||||||
main()
|
|
||||||
Binary file not shown.
|
Before Width: | Height: | Size: 94 KiB |
Binary file not shown.
|
Before Width: | Height: | Size: 95 KiB |
Binary file not shown.
|
Before Width: | Height: | Size: 27 KiB |
Binary file not shown.
|
Before Width: | Height: | Size: 34 KiB |
Binary file not shown.
|
Before Width: | Height: | Size: 35 KiB |
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|
Before Width: | Height: | Size: 36 KiB |
Binary file not shown.
|
Before Width: | Height: | Size: 103 KiB |
Binary file not shown.
|
Before Width: | Height: | Size: 102 KiB |
Binary file not shown.
|
Before Width: | Height: | Size: 103 KiB |
Binary file not shown.
|
Before Width: | Height: | Size: 104 KiB |
Binary file not shown.
|
Before Width: | Height: | Size: 19 KiB |
Binary file not shown.
|
Before Width: | Height: | Size: 102 KiB |
|
|
@ -1,269 +0,0 @@
|
||||||
<!DOCTYPE html>
|
|
||||||
<html>
|
|
||||||
<head>
|
|
||||||
<title>Dithering Comparison: _DSC2637-sterling</title>
|
|
||||||
<style>
|
|
||||||
body {
|
|
||||||
font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
|
|
||||||
background: #1a1a2e;
|
|
||||||
color: #eee;
|
|
||||||
margin: 0;
|
|
||||||
padding: 20px;
|
|
||||||
}
|
|
||||||
h1 { color: #00d9ff; margin-bottom: 10px; }
|
|
||||||
.subtitle { color: #888; margin-bottom: 30px; }
|
|
||||||
.grid {
|
|
||||||
display: grid;
|
|
||||||
grid-template-columns: repeat(auto-fill, minmax(420px, 1fr));
|
|
||||||
gap: 20px;
|
|
||||||
}
|
|
||||||
.card {
|
|
||||||
background: #16213e;
|
|
||||||
border-radius: 12px;
|
|
||||||
overflow: hidden;
|
|
||||||
box-shadow: 0 4px 20px rgba(0,0,0,0.3);
|
|
||||||
}
|
|
||||||
.card img {
|
|
||||||
width: 100%;
|
|
||||||
height: auto;
|
|
||||||
display: block;
|
|
||||||
cursor: pointer;
|
|
||||||
transition: transform 0.2s;
|
|
||||||
}
|
|
||||||
.card img:hover { transform: scale(1.02); }
|
|
||||||
.card-info {
|
|
||||||
padding: 15px;
|
|
||||||
}
|
|
||||||
.card-title {
|
|
||||||
font-size: 18px;
|
|
||||||
font-weight: 600;
|
|
||||||
color: #00d9ff;
|
|
||||||
margin-bottom: 5px;
|
|
||||||
}
|
|
||||||
.card-desc {
|
|
||||||
font-size: 13px;
|
|
||||||
color: #888;
|
|
||||||
margin-bottom: 8px;
|
|
||||||
}
|
|
||||||
.card-time {
|
|
||||||
font-size: 12px;
|
|
||||||
color: #666;
|
|
||||||
}
|
|
||||||
.source-card {
|
|
||||||
grid-column: 1 / -1;
|
|
||||||
max-width: 850px;
|
|
||||||
}
|
|
||||||
.source-card img { max-width: 800px; }
|
|
||||||
.palette {
|
|
||||||
display: flex;
|
|
||||||
gap: 10px;
|
|
||||||
margin: 20px 0;
|
|
||||||
padding: 15px;
|
|
||||||
background: #16213e;
|
|
||||||
border-radius: 8px;
|
|
||||||
width: fit-content;
|
|
||||||
}
|
|
||||||
.color-swatch {
|
|
||||||
width: 40px;
|
|
||||||
height: 40px;
|
|
||||||
border-radius: 6px;
|
|
||||||
border: 2px solid #333;
|
|
||||||
}
|
|
||||||
.fullscreen {
|
|
||||||
display: none;
|
|
||||||
position: fixed;
|
|
||||||
top: 0;
|
|
||||||
left: 0;
|
|
||||||
width: 100%;
|
|
||||||
height: 100%;
|
|
||||||
background: rgba(0,0,0,0.95);
|
|
||||||
z-index: 1000;
|
|
||||||
justify-content: center;
|
|
||||||
align-items: center;
|
|
||||||
}
|
|
||||||
.fullscreen img {
|
|
||||||
max-width: 95%;
|
|
||||||
max-height: 95%;
|
|
||||||
}
|
|
||||||
.fullscreen.active { display: flex; }
|
|
||||||
</style>
|
|
||||||
</head>
|
|
||||||
<body>
|
|
||||||
<h1>Dithering Algorithm Comparison</h1>
|
|
||||||
<p class="subtitle">Source: /volumes/syncthing/Projects/frame/src/_DSC2637-sterling.jpg</p>
|
|
||||||
|
|
||||||
<h3>6-Color Palette</h3>
|
|
||||||
<div class="palette">
|
|
||||||
<div class="color-swatch" style="background: rgb(0,0,0);" title="Black"></div>
|
|
||||||
<div class="color-swatch" style="background: rgb(255,255,255);" title="White"></div>
|
|
||||||
<div class="color-swatch" style="background: rgb(255,255,0);" title="Yellow"></div>
|
|
||||||
<div class="color-swatch" style="background: rgb(255,0,0);" title="Red"></div>
|
|
||||||
<div class="color-swatch" style="background: rgb(0,0,255);" title="Blue"></div>
|
|
||||||
<div class="color-swatch" style="background: rgb(0,255,0);" title="Green"></div>
|
|
||||||
</div>
|
|
||||||
|
|
||||||
<h3>Results</h3>
|
|
||||||
<div class="grid">
|
|
||||||
<div class="card source-card">
|
|
||||||
<img src="_DSC2637-sterling_source.png" alt="Prepared Source" onclick="showFullscreen(this)">
|
|
||||||
<div class="card-info">
|
|
||||||
<div class="card-title">Original (Prepared)</div>
|
|
||||||
<div class="card-desc">Source image resized to 800x480 with LANCZOS resampling</div>
|
|
||||||
</div>
|
|
||||||
</div>
|
|
||||||
|
|
||||||
<div class="card">
|
|
||||||
<img src="_DSC2637-sterling_none.png" alt="No Dithering (PIL)" onclick="showFullscreen(this)">
|
|
||||||
<div class="card-info">
|
|
||||||
<div class="card-title">No Dithering (PIL)</div>
|
|
||||||
<div class="card-desc">Simple nearest-color quantization without error diffusion</div>
|
|
||||||
<div class="card-time">Processing time: 0.00s</div>
|
|
||||||
</div>
|
|
||||||
</div>
|
|
||||||
|
|
||||||
<div class="card">
|
|
||||||
<img src="_DSC2637-sterling_pil_fs.png" alt="Floyd-Steinberg (PIL)" onclick="showFullscreen(this)">
|
|
||||||
<div class="card-info">
|
|
||||||
<div class="card-title">Floyd-Steinberg (PIL)</div>
|
|
||||||
<div class="card-desc">PIL built-in Floyd-Steinberg implementation</div>
|
|
||||||
<div class="card-time">Processing time: 0.01s</div>
|
|
||||||
</div>
|
|
||||||
</div>
|
|
||||||
|
|
||||||
<div class="card">
|
|
||||||
<img src="_DSC2637-sterling_floyd_steinberg.png" alt="Floyd-Steinberg" onclick="showFullscreen(this)">
|
|
||||||
<div class="card-info">
|
|
||||||
<div class="card-title">Floyd-Steinberg</div>
|
|
||||||
<div class="card-desc">Classic error diffusion (1976), good balance of speed and quality</div>
|
|
||||||
<div class="card-time">Processing time: 3.58s</div>
|
|
||||||
</div>
|
|
||||||
</div>
|
|
||||||
|
|
||||||
<div class="card">
|
|
||||||
<img src="_DSC2637-sterling_floyd_steinberg_weighted.png" alt="Floyd-Steinberg (Weighted)" onclick="showFullscreen(this)">
|
|
||||||
<div class="card-info">
|
|
||||||
<div class="card-title">Floyd-Steinberg (Weighted)</div>
|
|
||||||
<div class="card-desc">Floyd-Steinberg with perceptual color weighting</div>
|
|
||||||
<div class="card-time">Processing time: 3.93s</div>
|
|
||||||
</div>
|
|
||||||
</div>
|
|
||||||
|
|
||||||
<div class="card">
|
|
||||||
<img src="_DSC2637-sterling_atkinson.png" alt="Atkinson" onclick="showFullscreen(this)">
|
|
||||||
<div class="card-info">
|
|
||||||
<div class="card-title">Atkinson</div>
|
|
||||||
<div class="card-desc">Bill Atkinson (Apple), diffuses only 75% of error for cleaner results</div>
|
|
||||||
<div class="card-time">Processing time: 3.57s</div>
|
|
||||||
</div>
|
|
||||||
</div>
|
|
||||||
|
|
||||||
<div class="card">
|
|
||||||
<img src="_DSC2637-sterling_atkinson_weighted.png" alt="Atkinson (Weighted)" onclick="showFullscreen(this)">
|
|
||||||
<div class="card-info">
|
|
||||||
<div class="card-title">Atkinson (Weighted)</div>
|
|
||||||
<div class="card-desc">Atkinson with perceptual color weighting</div>
|
|
||||||
<div class="card-time">Processing time: 3.89s</div>
|
|
||||||
</div>
|
|
||||||
</div>
|
|
||||||
|
|
||||||
<div class="card">
|
|
||||||
<img src="_DSC2637-sterling_jarvis.png" alt="Jarvis-Judice-Ninke" onclick="showFullscreen(this)">
|
|
||||||
<div class="card-info">
|
|
||||||
<div class="card-title">Jarvis-Judice-Ninke</div>
|
|
||||||
<div class="card-desc">Larger diffusion kernel (1976), smoother gradients but slower</div>
|
|
||||||
<div class="card-time">Processing time: 7.85s</div>
|
|
||||||
</div>
|
|
||||||
</div>
|
|
||||||
|
|
||||||
<div class="card">
|
|
||||||
<img src="_DSC2637-sterling_stucki.png" alt="Stucki" onclick="showFullscreen(this)">
|
|
||||||
<div class="card-info">
|
|
||||||
<div class="card-title">Stucki</div>
|
|
||||||
<div class="card-desc">Similar to JJN with modified weights (1981)</div>
|
|
||||||
<div class="card-time">Processing time: 7.83s</div>
|
|
||||||
</div>
|
|
||||||
</div>
|
|
||||||
|
|
||||||
<div class="card">
|
|
||||||
<img src="_DSC2637-sterling_sierra.png" alt="Sierra" onclick="showFullscreen(this)">
|
|
||||||
<div class="card-info">
|
|
||||||
<div class="card-title">Sierra</div>
|
|
||||||
<div class="card-desc">Full Sierra dithering, balanced results</div>
|
|
||||||
<div class="card-time">Processing time: 6.75s</div>
|
|
||||||
</div>
|
|
||||||
</div>
|
|
||||||
|
|
||||||
<div class="card">
|
|
||||||
<img src="_DSC2637-sterling_sierra_lite.png" alt="Sierra Lite" onclick="showFullscreen(this)">
|
|
||||||
<div class="card-info">
|
|
||||||
<div class="card-title">Sierra Lite</div>
|
|
||||||
<div class="card-desc">Faster Sierra variant with smaller kernel</div>
|
|
||||||
<div class="card-time">Processing time: 3.03s</div>
|
|
||||||
</div>
|
|
||||||
</div>
|
|
||||||
|
|
||||||
<div class="card">
|
|
||||||
<img src="_DSC2637-sterling_burkes.png" alt="Burkes" onclick="showFullscreen(this)">
|
|
||||||
<div class="card-info">
|
|
||||||
<div class="card-title">Burkes</div>
|
|
||||||
<div class="card-desc">Simplified two-row error diffusion</div>
|
|
||||||
<div class="card-time">Processing time: 5.21s</div>
|
|
||||||
</div>
|
|
||||||
</div>
|
|
||||||
|
|
||||||
<div class="card">
|
|
||||||
<img src="_DSC2637-sterling_bayer2.png" alt="Ordered (Bayer 2x2)" onclick="showFullscreen(this)">
|
|
||||||
<div class="card-info">
|
|
||||||
<div class="card-title">Ordered (Bayer 2x2)</div>
|
|
||||||
<div class="card-desc">Ordered dithering with 2x2 Bayer matrix</div>
|
|
||||||
<div class="card-time">Processing time: 2.05s</div>
|
|
||||||
</div>
|
|
||||||
</div>
|
|
||||||
|
|
||||||
<div class="card">
|
|
||||||
<img src="_DSC2637-sterling_bayer4.png" alt="Ordered (Bayer 4x4)" onclick="showFullscreen(this)">
|
|
||||||
<div class="card-info">
|
|
||||||
<div class="card-title">Ordered (Bayer 4x4)</div>
|
|
||||||
<div class="card-desc">Ordered dithering with 4x4 Bayer matrix</div>
|
|
||||||
<div class="card-time">Processing time: 2.05s</div>
|
|
||||||
</div>
|
|
||||||
</div>
|
|
||||||
|
|
||||||
<div class="card">
|
|
||||||
<img src="_DSC2637-sterling_bayer8.png" alt="Ordered (Bayer 8x8)" onclick="showFullscreen(this)">
|
|
||||||
<div class="card-info">
|
|
||||||
<div class="card-title">Ordered (Bayer 8x8)</div>
|
|
||||||
<div class="card-desc">Ordered dithering with 8x8 Bayer matrix</div>
|
|
||||||
<div class="card-time">Processing time: 2.04s</div>
|
|
||||||
</div>
|
|
||||||
</div>
|
|
||||||
|
|
||||||
<div class="card">
|
|
||||||
<img src="_DSC2637-sterling_bayer4_strong.png" alt="Ordered (Bayer 4x4 Strong)" onclick="showFullscreen(this)">
|
|
||||||
<div class="card-info">
|
|
||||||
<div class="card-title">Ordered (Bayer 4x4 Strong)</div>
|
|
||||||
<div class="card-desc">Bayer 4x4 with increased dithering strength</div>
|
|
||||||
<div class="card-time">Processing time: 2.03s</div>
|
|
||||||
</div>
|
|
||||||
</div>
|
|
||||||
|
|
||||||
</div>
|
|
||||||
|
|
||||||
<div class="fullscreen" onclick="hideFullscreen()">
|
|
||||||
<img src="" id="fullscreen-img">
|
|
||||||
</div>
|
|
||||||
|
|
||||||
<script>
|
|
||||||
function showFullscreen(img) {
|
|
||||||
document.getElementById('fullscreen-img').src = img.src;
|
|
||||||
document.querySelector('.fullscreen').classList.add('active');
|
|
||||||
}
|
|
||||||
function hideFullscreen() {
|
|
||||||
document.querySelector('.fullscreen').classList.remove('active');
|
|
||||||
}
|
|
||||||
document.addEventListener('keydown', (e) => {
|
|
||||||
if (e.key === 'Escape') hideFullscreen();
|
|
||||||
});
|
|
||||||
</script>
|
|
||||||
</body>
|
|
||||||
</html>
|
|
||||||
Binary file not shown.
|
Before Width: | Height: | Size: 106 KiB |
Binary file not shown.
|
Before Width: | Height: | Size: 100 KiB |
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|
Before Width: | Height: | Size: 249 KiB |
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Reference in a new issue