Opencv::mog2 algorithm speed on Jetson Orin NX 16 GB CPU and GPU

[viilture]

I’m running the Opencv MOG2 algorithm on Jetson Orin NX on 4k video.

In MAXN mode on CPU mog2 works 2 times faster than on CUDA, without taking into account the delay in transferring the image to the GPU and back.

Am I doing something wrong? On Jetson Nano on GPU mog 2 worked 3 times faster, although the performance of Jetson Nano is 0.5TOPS, and Jetson Orin NX 157TOPS.

thanks.

[AastaLLL]

Hi,

You can find the GPU utilization with the below tool on Jetson:

$ sudo tegrastats

If the GPU utilization is relatively low (usually we expect ~99%), please check with the OpenCV team as this should be an implementation issue.

Thanks.