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112 lines
3.3 KiB
112 lines
3.3 KiB
Example Images
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==============
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This directory contains example WebP encoded files and PNG source files.
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## Image Credits
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### Photos by Author
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These images are taken by author.
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These photos are licensed under the Creative Commons Attribution 3.0.
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You can also use these images under the same as [go-libwebp's license](../LICENSE).
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#### cosmos.png
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The cosmos taken in Nokono-shima (Nokono Island), Fukuoka, JAPAN.
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WebP file is generated by following command:
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```sh
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$ cwebp -q 90 cosmos.png -o cosmos.webp
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Saving file 'cosmos.webp'
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File: cosmos.png
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Dimension: 1024 x 768
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Output: 76954 bytes Y-U-V-All-PSNR 45.87 47.63 48.10 46.44 dB
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block count: intra4: 2972
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intra16: 100 (-> 3.26%)
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skipped block: 1 (0.03%)
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bytes used: header: 249 (0.3%)
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mode-partition: 15161 (19.7%)
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Residuals bytes |segment 1|segment 2|segment 3|segment 4| total
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macroblocks: | 0%| 11%| 33%| 54%| 3072
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quantizer: | 12 | 11 | 9 | 8 |
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filter level: | 4 | 2 | 2 | 4 |
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```
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#### butterfly.png
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The butterfly taken in Ishigaki-jima (Ishigaki Island) in Okinawa, JAPAN.
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WebP file is generated by following command:
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```sh
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$ cwebp -q 90 butterfly.png -o butterfly.webp
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Saving file 'butterfly.webp'
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File: butterfly.png
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Dimension: 1024 x 768
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Output: 79198 bytes Y-U-V-All-PSNR 45.50 48.71 49.90 46.44 dB
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block count: intra4: 2775
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intra16: 297 (-> 9.67%)
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skipped block: 0 (0.00%)
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bytes used: header: 383 (0.5%)
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mode-partition: 13227 (16.7%)
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Residuals bytes |segment 1|segment 2|segment 3|segment 4| total
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macroblocks: | 1%| 7%| 14%| 75%| 3072
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quantizer: | 12 | 12 | 10 | 8 |
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filter level: | 4 | 3 | 2 | 6 |
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```
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#### kinkaku.png
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Kinkaku taken in Kyoto, JAPAN.
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WebP file is generated by following command:
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```sh
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$ cwebp -q 90 kinkaku.png -o kinkaku.webp
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Saving file 'kinkaku.webp'
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File: kinkaku.png
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Dimension: 1024 x 768
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Output: 186300 bytes Y-U-V-All-PSNR 43.86 47.25 48.26 44.81 dB
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block count: intra4: 2775
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intra16: 297 (-> 9.67%)
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skipped block: 243 (7.91%)
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bytes used: header: 425 (0.2%)
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mode-partition: 16737 (9.0%)
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Residuals bytes |segment 1|segment 2|segment 3|segment 4| total
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macroblocks: | 2%| 28%| 40%| 28%| 3072
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quantizer: | 12 | 11 | 9 | 6 |
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filter level: | 4 | 2 | 2 | 1 |
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```
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### From Google WebP Gallery
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These images picked up from [WebP Gallery](https://developers.google.com/speed/webp/gallery) in Google Developers.
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#### yellow-rose-3.png
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"Free Stock Photo in High Resolution - Yellow Rose 3 - Flowers" by Jon Sullivan
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This image is clipped by Google and licensed under [Creative Commons Attribution 3.0](https://creativecommons.org/licenses/by/3.0/). The Source of this image is in the public domain.
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<div style="background:url('./checkerboard.png')">
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<img title="yellow-rose-3.png" src="yellow-rose-3.png">
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</div>
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#### fizyplankton.png
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"baby tux for my user page" by Fizyplankton.
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This image file is in the public domain.
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<div style="background:url('./checkerboard.png')">
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<img title="fizyplankton.png" src="fizyplankton.png">
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</div>
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