AnsweredAssumed Answered

IMX6 HDMI output formating

Question asked by xav go on Mar 20, 2017
Latest reply on Mar 24, 2017 by xav go

Dear all,

 

I noticed that the color levels are modified by the iMX6 HDMI output.

Here is the test I passed:

I generated monochrom images (ie : [240;0;0] [15;0;0]), I play them either using gstremer image freeze either an image processing application (ImageJ). I have an analyser at the HDMI output that shows that the codes are not anymore the code of the image file played. I made the same test with a PC on windows and the image levels are right the image file levels.

I am wondering if there is a transformation in the iMX6 display module (it seems to be like a gamma transformation or a LUT).

 

Does anyone knows about this issue? It there is suche a signal trnasformation, is there a way to bypass it?

 

Thank you very much for your help.

 

Regards.

 

Xavier

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