Intel® Integrated Performance Primitives
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Extracting YUV data from a JPEG

mark_moore
Beginner
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Does anyone know how I can extract the YUV values for each image pixel (4:4:4) using IPP 4.1? I've compiled the IJL2.0 sample and it's possible to extract them but only if the JPEG is encoded as 4:2:2 - I'd like to be able to handle different formats, e.g. a JPEG encoded as YUV 4:1:1.
If Iuse the IPPlibrary Icould convert the RGBvalues decoded from the JPEG to YUV but this seems wasteful when they were YUV to start with in the JPEG. Am I missing something?
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Vladimir_Dudnik
Employee
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Hi Mark,
In case of IJL you can set unknown color space for the output data of decoder to turn off color conversion
Regards,
Vladimir
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