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Take average of chroma samples when subsampling #522

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Take average of chroma samples when subsampling #522

wants to merge 1 commit into from

Commits on Jun 14, 2021

  1. Take average of chroma samples when subsampling 

    Taking the average is a form of low-pass filtering. It also puts the
subsampled chroma at the center of the 2x2 chroma block. Most
YCbCr-to-RGB conversion functions used in image decoding assume the
center chroma sample position.

A proof of concept for a fix for
strukturag#521.
    @wantehchang
    wantehchang committed Jun 14, 2021
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