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42 lines
1.5 KiB
42 lines
1.5 KiB
List of features used in each test vector.
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All the 'lossless_vec_1_*.webp' WebP files should decode to an image comparable to equivalently 'grid.png'.
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This synthetic picture is made of 16x16 grid-alternating pixels with RGBA values equal to
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blue B=(0,0,255,255) and half-transparent red R=(255,0,0,128), according to
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the pattern:
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BRBRBRBRBRBRBRBR
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RBRBRBRBRBRBRBRB
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BRBRBRBRBRBRBRBR
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RBRBRBRBRBRBRBRB
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BRBRBRBRBRBRBRBR
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RBRBRBRBRBRBRBRB
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BRBRBRBRBRBRBRBR
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RBRBRBRBRBRBRBRB
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BRBRBRBRBRBRBRBR
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RBRBRBRBRBRBRBRB
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BRBRBRBRBRBRBRBR
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RBRBRBRBRBRBRBRB
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BRBRBRBRBRBRBRBR
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RBRBRBRBRBRBRBRB
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BRBRBRBRBRBRBRBR
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RBRBRBRBRBRBRBRB
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The 'lossless_vec_2_*.webp' WebP files should decode to an image comparable
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to equivalently 'peak.png'. Their alpha channel is fully opaque.
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Feature list:
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lossless_vec_?_0.webp: none
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lossless_vec_?_1.webp: PALETTE
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lossless_vec_?_2.webp: PREDICTION
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lossless_vec_?_3.webp: PREDICTION PALETTE
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lossless_vec_?_4.webp: SUBTRACT-GREEN
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lossless_vec_?_5.webp: SUBTRACT-GREEN PALETTE
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lossless_vec_?_6.webp: PREDICTION SUBTRACT-GREEN
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lossless_vec_?_7.webp: PREDICTION SUBTRACT-GREEN PALETTE
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lossless_vec_?_8.webp: CROSS-COLOR-TRANSFORM
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lossless_vec_?_9.webp: CROSS-COLOR-TRANSFORM PALETTE
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lossless_vec_?_10.webp: PREDICTION CROSS-COLOR-TRANSFORM
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lossless_vec_?_11.webp: PREDICTION CROSS-COLOR-TRANSFORM PALETTE
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lossless_vec_?_12.webp: CROSS-COLOR-TRANSFORM SUBTRACT-GREEN
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lossless_vec_?_13.webp: CROSS-COLOR-TRANSFORM SUBTRACT-GREEN PALETTE
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lossless_vec_?_14_.webp: PREDICTION CROSS-COLOR-TRANSFORM SUBTRACT-GREEN
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lossless_vec_?_15.webp: PREDICTION CROSS-COLOR-TRANSFORM SUBTRACT-GREEN PALETTE
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