Project 08
Dithering and Screening
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Method: Levels / BlockSize:
Pattern:
Image:
Upload image:
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Usage
- Choose the desired operation with the Method dropdown menu;
- Input a number of color levels (for dithering) / blocksize (for halftoning and pattern-based screening);
- Click on the Apply button to see the effect;
- For artistic screening using patterns, choose the pattern you want to use in the Patterns dropdown menu. Please make sure the block size is an even number, and use a block size larger than 4. Smaller block size are allowed but the results are not feasible.
- For comparison between the original image and the processed one, click and hold on the images to toggle the original images.
Results
Please click on the images to see the full size versions.
Floyd-Steinberg Error diffusion
Original Image |
Floyd-Steinberg Error diffusion with 2 levels in each color channel |
Floyd-Steinberg Error diffusion with 4 levels in each color channel |
Floyd-Steinberg Error diffusion with 8 levels in each color channel |
Ordered Dithering
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Original Image |
Ordered dithering with 2 levels in each color channel |
Ordered dithering with 4 levels in each color channel |
Ordered dithering with 8 levels in each color channel |
Random Dithering
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Original Image |
Random dithering with 2 levels in each color channel |
Random dithering with 4 levels in each color channel |
Random dithering with 8 levels in each color channel |
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Original Image |
Simple Error Diffusion with 2 levels in each color channel |
Simple Error Diffusion with 4 levels in each color channel |
Simple Error Diffusion with 8 levels in each color channel |
Halftoning
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Original Image |
Halftoning using 6x6 blocks |
Halftoning using 8x8 blocks |
Halftoning using 12x12 blocks |
Halftoning with 4 Colors
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Original Image |
Halftoning with 4 colors using 6x6 blocks |
Halftoning with 4 colors using 8x8 blocks |
Halftoning with 4 colors using 12x12 blocks |
Artistic Screening
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Original Image |
Artistic Screening 1 |
Artistic Screening 2 |
Artistic Screening with TAM logo |
More Results
Original Image |
Floyd-Steinberg Error diffusion with 2 levels |
Halftoning |
Halftoning with 4 colors |
Artistic Screening with the Transformers logo |
Artistic Screening with the Superman logo |