Optimizing opencv gstreamer with mipi and usb uvc cameras

[DaneLLL]

Hi,
For the USB camera, you may check if you can run

VideoCapture cap("v4l2src device=/dev/video1 ! video/x-raw,width=1920,height=1080,format=UYVY,framerate=30/1 ! videoconvert ! video/x-raw,format=BGR ! appsink");

Sony camera module cannot be opened with OpenCV on Xavier

Hi, We have verified the following sample on r32.2.1/Xavier. #include <stdio.h> #include <opencv2/opencv.hpp> #include <opencv2/imgproc/types_c.h> using namespace cv; using namespace std; int main(int argc, char** argv) { VideoCapture cap("v4l2src device=/dev/video1 ! video/x-raw,width=1920,height=1080,format=UYVY,framerate=30/1 ! videoconvert ! video/x-raw,format=BGR ! appsink"); if (!cap.isOpened()) { cout << "Failed to open camera." << endl; return -1; } for(;;…

OpenCV is CPU based frameworks and please execute sudo jetson_clocks to get max performance on Jetson Nano.

If OpenCV is not must-have in your implementation, you can consider to use gstreamer or jetson_multimedia_api, which use hardware DMA buffers to get optimal performance.