Adjusting Hue in Video decoders and HDMI receivers

Document created by DaveD Employee on Aug 12, 2011
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Hue adjustment is done on YCrCb data stream;

It can be done in CP-core by:

  • Enabling video adjustmnets (VID_ADJ_EN, CP-core, 0x3E[7] in ADV7611/2/9)
  • Setting hue to desired value (CP_HUE, CP-core, 0x3D[7:0] in ADV7611/2/9)

 

Cb_out = Cb*cos(hue) + Cr*sin(hue)

Cr_out = Cr*cos(hue) - Cb*sin(hue)

 

I'm attaching example spreadsheet with rotation calculated from measured video

stream. 8-bit YCrCb 444 stream used with EVAL-ADV7611EB1Z.

 

 

 

This FAQ was generated from the following discussion: Adjusting Hue in Video decoders and HDMI receivers

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