I am using the example code for the Nvidia jpeg decoder and after the call to decodeToBuffer() I am wondering how can I convert the resulting NvBuffer to cv::Mat. I tried assigning the data pointer in the cv::Mat to the buffer->planes[0].data which is supposed to be the pointer to the begging of the…

Hi, You may do memset to input_params to make sure there’s no garbage data. And call like int fd=0; NvBufferCreateEx(&fd); If the issue is still present, suggest you connect TX2 to a USB camera and try to successfully run 12_camera_v4l2_cuda as a reference.

Convert NvBuffer to cv::Mat

Robotics & Edge Computing Jetson & Embedded Systems Jetson TX2

DaneLLL April 14, 2022, 1:50am 3

Hi,
You would need to create RGBA NvBuffer and then call NvBufferTransform() to convert the decoded YUV to RGBA. Please refer to this patch for mapping RGBA NvBuffer to cv::Mat:
NVBuffer (FD) to opencv Mat - #6 by DaneLLL

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Convert NvBuffer to cv::Mat

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