SK-TDA4VM: SK-TDA4VM - IMX219 Camera Over Exposure issue while running the edgeai demo application on outdoor condition

Hi Dinesh,

Thanks for the confirmation and we will close this thread.

Hi Gang,

Need some more clarification to the above issue,  I am using the below changes for resolving the over exposure issue but while testing in indoor conditions the color of the objects detected are changing for some random frames.
when the object is very nearer to the camera its looking in blue shade and the tagret is away from the camera its looking yellow color for skin tone.

The image quality is not upto the mark after changing the below parameters, its not looking good.

p_ae_dynPrms->targetBrightnessRange.min = 60;
p_ae_dynPrms->targetBrightnessRange.max = 120;
p_ae_dynPrms->targetBrightness = 60;
p_ae_dynPrms->threshold = 1;
p_ae_dynPrms->enableBlc = 1;
p_ae_dynPrms->exposureTimeStepSize = 1;

p_ae_dynPrms->exposureTimeRange[count].min = 1;
p_ae_dynPrms->exposureTimeRange[count].max = 3333;
p_ae_dynPrms->analogGainRange[count].min = 1024;
p_ae_dynPrms->analogGainRange[count].max = 8129;
p_ae_dynPrms->digitalGainRange[count].min = 256;
p_ae_dynPrms->digitalGainRange[count].max = 256;


Currently i am using the SK-TDA4VM Ti-PSDK provided edge ai cpp application and the camera is LI-IMX219 camera, my aim is to achieve an object detection for upto 40 meters, can you suggest the correct camera module, inference model and the camera resolution to be used.

Dineshkumar Subramanian said:

when the object is very nearer to the camera its looking in blue shade and the tagret is away from the camera its looking yellow color for skin tone.

I cannot tell for sure, but it sounds like an issue of auto white balance.
You may need to check if white balance is working properly in your system.

Dineshkumar Subramanian said:

p_ae_dynPrms->targetBrightnessRange.min = 60;
p_ae_dynPrms->targetBrightnessRange.max = 120;
p_ae_dynPrms->targetBrightness = 60;
p_ae_dynPrms->threshold = 1;
p_ae_dynPrms->enableBlc = 1;
p_ae_dynPrms->exposureTimeStepSize = 1;

We typically set "threshold=5", "min=target-threshold", and "max=target+threshold".

p_ae_dynPrms->targetBrightnessRange.min = 55;
p_ae_dynPrms->targetBrightnessRange.max = 65;
p_ae_dynPrms->targetBrightness = 60;
p_ae_dynPrms->threshold = 5;
p_ae_dynPrms->enableBlc = 0;

Dineshkumar Subramanian said:

my aim is to achieve an object detection for upto 40 meters, can you suggest the correct camera module, inference model and the camera resolution to be used.

I am not familiar with objection detection for giving any suggestions.

Hi Gang,

I would like to get the camera isp tuning parameter values for working in both day and night conditions automatically.

Dineshkumar Subramanian said:

I would like to get the camera isp tuning parameter values for working in both day and night conditions automatically.

Hi Dinesh,

I am not sure what you are asking for exactly.