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dm8168 display quality.

Senthilnathan Maadasamy
Prodigy 160 points

Hi,

       We are seeing degradation in image quality in the display path.  We play out an input YUV file on the V4L2 display of the board and capture the output of the board.  The capture process has been verified independently and it does not change the quality.  Below are the links for YUV files (1920x1080, YUY2 format, single frame) and their corresponding PNG files.  The quality measurements of the output YUV files are bad (low PSNR, etc) due to this. We have repeated this experiment for both HDMI display and SDI (dvo2) display.  In both cases quality is degrading.

 Let me know how to resolve this issue.

Input:

https://www.dropbox.com/s/h7xqahwrq7o9hbo/hd_1920x1080_input.yuv

https://www.dropbox.com/s/hgn65yz5z1nwgge/hd_1920x1080_input.png

SDI Output:

https://www.dropbox.com/s/8q2vaf3yww8jeje/hd_1920x1080_output_sdi.yuv

https://www.dropbox.com/s/5a9sx890ju03dc1/hd_1920x1080_output_sdi.png

HDMI Output:

https://www.dropbox.com/s/hdzejc3g7qt6xky/hd_1920x1080_output_hdmi.yuv

https://www.dropbox.com/s/le798wfx8m2hhb8/hd_1920x1080_output_hdmi.png

Thanks,

Senthil