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i.MX6 mfw_isink color quantization artifact   "Posterization"

Question asked by Tarek El-Sherbiny on Jul 1, 2014
Latest reply on Aug 6, 2014 by Tarek El-Sherbiny

Hi, I'm using mfw_isink on  i.MX6D for displaying and resizing the video. The image contains several regions of colors instead of a continuous gradation of tone. The problem seams to be more obvious on wide surfaces like a ceiling or a wall.

This snapshot shows the color contours on the ceiling:

posterization.jpg

Is there away to reduce this effect?

 

My command line:

console=ttymxc3,115200 video=mxcfb0:dev=hdmi,1920x1080@60,bpp=32,if=RGB24 root=/dev/mmcblk0p1 rw rootwait rootfs=ext3 enable_wait_mode=off consoleblank=0 video=mxcfb1:off video=mxcfb2:off maxcpus=2 kmemleak=on

 

Thanks

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