Hello everyone,
I’m currently facing an issue with the auto-exposure convergence on my imx678. I’m using the DOL HDR mode of the ISP on the Orin AGX, and the image flickers due to constantly changing exposure values. It seems that this issue is related to the combination of long and short exposure images. As the exposure converges towards a certain value, the combination of short and long images causes the ISP to readjust the exposure, leading to further changes in the combination, and so on.
To address this problem, I would like to increase the tolerance for exposure convergence to prevent it from oscillating in situations like the one I described above.
Here are the settings from my .isp file. I have tried modifying them, but without documentation, I haven’t had any successful results.
ae.MeanAlg.HigherTarget = 120;
ae.MeanAlg.LowerTarget = 120;
ae.MeanAlg.HigherBrightness = 10000;
ae.MeanAlg.LowerBrightness = 600;
ae.MeanAlg.SlopFactor = 0.3;
ae.MeanAlg.MinTailMass = 0.001;
ae.MeanAlg.CriticalMass = 0.015;
ae.MeanAlg.ConvergeSpeed = 0.5;
ae.MaxFstopDeltaPos = 0.4;
ae.MaxFstopDeltaNeg = 0.5;
ae.ApertureStepToFNumberLUT = {2.4};
Does anyone have a configuration for these parameters that could help improve the convergence of auto-exposure?
Best regards,
Alexis KEDZIA