what chroma subsampling does imwrite use for a jpg file, 4:4:4, 4:2:2, or something else?
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what chroma subsampling does imwrite use for a jpg file, 4:4:4, 4:2:2, or something else?
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DGM
on 10 Apr 2021
I know this is an old question, but I just had to figure it out myself; I'm inclined to put answers where they belong. Imwrite uses 4:2:0 chroma subsampling, and the default quality setting is 75%.
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