I use v4l2 input signal. I want use openv in \jetson_multimedia_api\samples\12_camera_v4l2_cuda. How can I convert YUY420 NvBuffer to opencv mat? This is my code,but it is not work. static bool start_capture(context_t * ctx) { struct sigaction sig_action; struct pollfd fds[1]; NvBufferTrans…

Hi, The code looks OK. But you may need to add the line: cv::imshow("img", picBGR); +int key = cv::waitKey(1);

./camera_v4l2_cuda -d /dev/video2 -s 1920x1080 -f YUYV -n 0 It is report this error Gtk-Message: 17:57:46.493: Failed to load module “canberra-gtk-module” This is my whole code camera_v4l2_cuda.cpp (26.1 KB)

Jetson_multimedia_api NvBufferMem Transform to opencv mat

Robotics & Edge Computing Jetson Systems Jetson TX2

DaneLLL March 19, 2021, 8:19am 3

Hi,
Please convert the buffer to RGBA and map to cv::Mat. A patch for reference:
NVBuffer (FD) to opencv Mat - #6 by DaneLLL

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Jetson_multimedia_api NvBufferMem Transform to opencv mat

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