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Use precise dim/chan constraints in sato examples #287

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Oct 23, 2024
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Use precise dim/chan constraints in sato examples #287

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Expand Up @@ -1280,7 +1280,7 @@ The following example describes how to leverage a [=Sample Transform Derived Ima

Consider the following:
- A [=MIAF image item=] being a losslessly coded image item,<br>and its <code>[=PixelInformationProperty=]</code> with <code>[=bits_per_channel=]</code>=8,
- Another [=MIAF image item=] being a lossily or losslessly coded image item with the same dimensions and number of samples as the first input image item,<br>and its <code>[=PixelInformationProperty=]</code> with <code>[=bits_per_channel=]</code>=8,
- Another [=MIAF image item=] being a lossily or losslessly coded image item with the same spatial dimensions, the same number of channels, and the same chroma subsampling (or lack thereof) as the first input image item,<br>and its <code>[=PixelInformationProperty=]</code> with <code>[=bits_per_channel=]</code>=8,
- A [=Sample Transform Derived Image Item=] with the two items above as input in this order,<br>and its <code>[=PixelInformationProperty=]</code> with <code>[=bits_per_channel=]</code>=16,<br>and the following <code>[=SampleTransform=]</code> fields:
- <code>[=sato/version=]</code>=0
- <code>[=sato/bit_depth=]</code>=2 (signed 32-bit <code>[=sato/constant=]</code>s, stack values and intermediate results)
Expand Down Expand Up @@ -1314,7 +1314,7 @@ It differs from the [[#sato-example-suffix-bit-depth-extension]] by its slightly

Consider the following:
- A [=MIAF image item=] being a lossily coded image item,<br>and its <code>[=PixelInformationProperty=]</code> with <code>[=bits_per_channel=]</code>=12,
- Another [=MIAF image item=] being a lossily or losslessly coded image item with the same dimensions and number of samples as the first input image item,<br>and its <code>[=PixelInformationProperty=]</code> with <code>[=bits_per_channel=]</code>=8,<br>with the following contraints:
- Another [=MIAF image item=] being a lossily or losslessly coded image item with the same spatial dimensions, the same number of channels, and the same chroma subsampling (or lack thereof) as the first input image item,<br>and its <code>[=PixelInformationProperty=]</code> with <code>[=bits_per_channel=]</code>=8,<br>with the following contraints:
<li style="list-style: none"><ul><li style="list-style: none">For each sample position in each plane,<br><math><msub><mi>sample</mi><mi>original</mi></msub></math> being the value of the 16-bit original sample at that position in that plane,<br><math><msub><mi>sample</mi><mi>1</mi></msub></math> being the value of the 12-bit sample of the first input image at that position in that plane,<br><math><msub><mi>sample</mi><mi>2</mi></msub></math> being the value of the sample of the second input image at that position in that plane,<br><math><mo>≈</mo></math> representing similarity within compression loss range,</li></ul></li>
- <math><msub><mi>sample</mi><mi>1</mi></msub><mo>≈</mo><mfrac><msub><mi>sample</mi><mi>original</mi></msub><msup><mn>2</mn><mn>4</mn></msup></mfrac></math>
- <math><msub><mi>sample</mi><mi>2</mi></msub><mo>≈</mo><msub><mi>sample</mi><mi>original</mi></msub><mo>-</mo><msup><mn>2</mn><mn>4</mn></msup><mo>×</mo><msub><mi>sample</mi><mi>1</mi></msub><mo>+</mo><msup><mn>2</mn><mn>7</mn></msup></math>
Expand Down