Tool/software:
Hi,
We attempted to connect a camera using the AM62A chip and display its output. When using GStreamer to render the image content on-screen, yellow pixel artifacts appear on the display.
Through observation, we found that:
- These artifacts occur in regions with abrupt color changes
- They typically manifest at color transition boundaries within the image
- Example scenario: At the junction line between a white wall and a red door
It is clear from the image that numerous yellow pixel artifacts appear on the brown clothing, which should not exist in normal rendering.
I have verified the root cause through the following experimental steps:
- Display assembly replacement:
After swapping both the screen and its flex cable, the issue persists, eliminating display hardware as the cause. - Camera substitution:
Using alternative camera modules yielded no improvement, excluding camera sensor defects. - EdgeAI UI validation:
Directly displaying the EdgeAI interface on screen still produced yellow pixel artifacts. - Bridge chip test pattern verification:
Outputting test patterns via the LT9211C bridge chip resulted in artifact-free rendering.
Conclusion:
Based on this evidence, I suspect the anomaly originates within TI's Display Rendering Module (DRM). Request TI engineering support to investigate potential DRM-related causes.
The software version I am using is SDK 10.1, and my image display pipeline is structured as follows:
Camera → Gstreamer → DRM → LT9211C Bridge Chip → Display Panel.
We look forward to your prompt feedback and technical guidance.
Thanks,
Yuwei
