I have a Jetson Nano; not the Orion model, and I’m going through the 09_camera_jpeg_capture example to get a better understanding of how the Argus library works. I understand that in the ‘bool ConsumerThread::threadExecute()’ function is where the frames are being captured. But when it comes to sa…

Disregard my last comment about the segmentation fault I had two ‘versions’ of the 09_camera_jpeg_capture example on my Jetson Nano and I was editing the wrong one with my last comment OpenCV did work with the patch 09_camera_jpeg with OpenCV /* * Copyright (c) 2016-2018, NVIDIA CORPORATION. All…

Hello, Thanks for using the NVIDIA forums. Your topic will be best served in the Jetson category. Jetson & Embedded Systems Discussions relating to the Jetson DevKits and other Embedded computing devices …

Hi, For further processing on the frame data, please call createNvBuffer()/copyToNvBuffer() to get fd of the buffer. And you can access it through NvBuffer APIs.

I’m still very confused. In the 09_camera_jepg_capture program, I know that bool ConsumerThread::threadExecute() captures the incoming video frames and I was under the impression that I could just use/copy m_dmabuf instead of creating another buffer. Am I correct with that assumption or no? My se…

That patch reference didn’t help out much. I’m still making the assumption that I can grab the frames that are being captured in bool ConsumerThread::threadExecute() or does that really matter if I do it there or in the processV4L2Fd() function? In the bool ConsumerThread::threadExecute() function …

Hi, Hardware engines do not support 24-bit formats such as BGR/RGB. Please change to NvBufferColorFormat_ABGR32 pitch linear in createNvBuffer(), and map to CV_8UC4 in cv::Mat.

Made the changes with NvBufferColorFormat_ABGR32 and there was no pitch_linear argument that I could pass in createNvBuffer() so I used NvBufferLayout_Pitch But I still got a segmentation fault Recent changes I made to bool ConsumerThread::threadExecute() bool ConsumerThread::threadExecute() …

Hi, Please make sure the buffer is in 1920x1080. And try cv::Mat imgbuf = cv::Mat(1080, 1920, CV_8UC4, pdata); If it still does not work, you may apply the patch to 13 sample to make sure it works with the sample.

Still got the segmentation fault despite adding cv::Mat imgbuf = cv::Mat(1080, 1920, CV_8UC4, pdata); I’ll try out applying the patch that you mentioned here : Argus and OpenCV - #3 by DaneLLL

I tried applying the patch you mentioned here but with all the changes that were made since then; to not include the patch, I’m horribly confused on what exactly needs to get added and removed. Especially when it came to the static bool execute() function

OpenCV Mat Object And Saving Image Data 09_camera_jepg_capture

Robotics & Edge Computing Jetson Systems Jetson Nano

DaneLLL April 16, 2024, 3:12am 6

Hi,
Please refer to the patch for mapping NvBuffer to cv::Mat:
NVBuffer (FD) to opencv Mat - #6 by DaneLLL

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OpenCV Mat Object And Saving Image Data 09_camera_jepg_capture

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