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How i.MX6 IPU converts YUV422 data to YUV420?

Question asked by Satoshi Shimoda on Feb 11, 2014
Latest reply on Feb 25, 2014 by Rita Wang

Hi community,

 

I want to confirm the algorithm about i.MX6DQ IPU YUV422 -> YUV420 conversion.

I think IPU thins out the data for YUV422 -> YUV420 conversion.

Which of the following algorithm is correct?

 

Y Y Y Y Y Y                Y Y Y Y Y Y

CbCrCbCrCbCr    →     CbCrCbCrCbCr

Y Y Y Y Y Y                Y Y Y Y Y Y

CbCrCbCrCbCr

 

or

 

Y Y Y Y Y Y               Y Y Y Y Y Y

CbCrCbCrCbCr    →

Y Y Y Y Y Y               Y Y Y Y Y Y

CbCrCbCrCbCr           CbCrCbCrCbCr

 

 

If both are incorrect, could you let me know how IPU thins out the data?

 

 

Best Regards,

Satoshi Shimoda

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