I’m having an issues where calling cv::remap causes my program to segfault. I’m pretty new to opencv and the tx2.
From doing some research, I have read that there is a problem with opencv and TBB.
https://stackoverflow.com/questions/42842661/cvremap-segfaults-with-stdthread
If I reduce the threads using cv::setNumThreads(0), it correctly reports only 1 thread, but it still segfaults. I am curious as to what else could be causing this. All my passed in parameters seem to be fine:
cv::remap(frame, undistorted_frame, distortion_map1, distortion_map2, cv::INTER_LINEAR, cv::BORDER_CONSTANT
Is it ok if undistorted_frame is empty? All of the rest of the values seems to be correct. Is there any issue with remap that anyone knows of on OpenCV4Tegra? I read here as well that there are issues with the gpu::remap https://devtalk.nvidia.com/default/topic/1000106/?comment=5132311.
One of the oddest parts is it occasionally runs fine. If I attempt to restart it 2-4 times, it will generally one fine eventually… That has me leaning towards a threading issue still, but having setNumThreads(0) in does not fix it.
For reference I am using OpenCV 2.4.13.1 (using TBB ver 4.4 interface 9002) on JetPack 3.1 and R28.1.0. Wondering if I just need to install openCV from source (hope not). Thanks in advance for any help!