Quantcast
Channel: Raspberry Pi Forums
Viewing all articles
Browse latest Browse all 8093

Camera board • Re: First frame shows color artifacts when using fixed awbgains, analoggain, and shutter options.

$
0
0
I have been investigating the cause of the color artifacts seen in the first frames.

It turned out that there was an issue in how I configured the PiSP decompand block.
...
Yes. 64512,65536 looks wrong, only the final endpoint is allowed to have this value. The downward step to 2048 is also not allowed as the function has to be monotonic.
However, I discovered another issue:
For the first two frames, the decompand block does not appear to be applied.
...
Question:
Is it possible that the PiSP decompand block processing can be delayed by 2 frames?
The hardware processes every frame independently and should have no such delay.
This sounds like a request/configuration scheduling problem, somewhere inside libcamera. Are you still having this issue?

Statistics: Posted by njh — Wed Oct 01, 2025 8:54 am



Viewing all articles
Browse latest Browse all 8093

Trending Articles