AM62A3: How to turn on GLBCE dither?

Hello Jianxiong,

Unfortunately this is a TRM error. The GLBCE dithering feature is not supported on AM62A.

Regards,

Jianzhong

Hi, Jianzhong, 

Is there any solutions to mitigate the water ripple phenomenon? (I think it is caused by mapping operations from high bits data to low bits data)

Regards, 

Jianxiong

Hi Jianxiong,

Is this issue about contours showing up on very smooth gradient scenes?

Hi Gang, 

Yes, the contours shows up on smooth gradient scenes, such as sky during the day, surroundings around street lamps or car lights in the night. 

Hi Jianxiong,

That could possibly be more related to WDR and tone mapping.
Could you please share some sample raw/yuv images?

Smooth gradient scenes are typically low dynamic range such as the gray wall of lightbox and gray charts.

Hi, Gang, 

Here are the raw and YUV images. The raw doesn't have countours but the YUV has. 

0576.case.zip

         YUV image

I have seen this raw image in previous e2e thread.
This is a low dynamic range scene (wall of lightbox) and less related to WDR tone mapping.
In general, GLBCE shall not be too strong or too sensitive to low intensity variations for this type of scenes.
You may also check your gamma and EE settings.

Hua Jianxiong said:

sky during the day, surroundings around street lamps or car lights in the night.

These are high dynamic range scenes and very different from the wall of lightbox.
I was wondering if you have any raw/yuv samples for these WDR scenes.