OpenCV python error running on Xavier related to cv2 preferableBackend or preferableTarget not found

Autonomous Machines Jetson & Embedded Systems Jetson Xavier NX
1

Can anyone shed some light on this error? The program runs on my Intel Nuc running Ubuntu 21.04, but I would like to get it running on my Jetson Xavier Nx.

The error:

detections = net.forward()
cv2.error: OpenCV(4.5.1) /tmp/pip-req-build-zuuo394f/opencv/modules/dnn/src/dnn.cpp:1379: error: (-215:Assertion failed) preferableBackend != DNN_BACKEND_OPENCV || preferableTarget == DNN_TARGET_CPU || preferableTarget == DNN_TARGET_OPENCL || preferableTarget == DNN_TARGET_OPENCL_FP16 in function ‘setUpNet’

Jetpack: 4.5.1
OpenCV: 4.5.2 compiled with Cuda: YES
CUDA: 10.2.89
cuDNN: 8.0.180

Model files
MobileNetSSD_deploy.caffemodel
MobileNetSSD_deploy.prototxt

Installed cv2 4.5.2 from source using script found at GitHub - mdegans/nano_build_opencv: Build OpenCV on Nvidia Jetson Nano
then “pip3 install opencv-python==4.5.1.48”

image
image927×430 51.3 KB

Thanks in advance.

3

hi rymd80:
if running OpenCV on Jetson, the best way is flashed it with JectPack together, NOT from other repo, only SDKs from JectPack is NV compatibility guaranteed