Opencv 4.9.0 - ONNX file cannot be loaded

C++
1

Hello

I downloaded OpenCV 4.9.0 and also the corresponding contribution file.
With cmake and my GCC 10.2.0 compiler suite (from winlibs) I compiled all modules without any problem.

Inside samples directory of this release I found the face_detect.cpp example which will load a yunet-onnx file.
As given inside this sample, I tried to download file: face_detection_yunet_2021dec.onnx
But I found only file: face_detection_yunet_2023dec.onnx

The sample compiled without errors inside CodeBlocks.
My problem now is that the instruction:
Ptr detector = FaceDetectorYN::create(fd_modelPath, “”, Size(320, 320), scoreThreshold, nmsThreshold, topK);
(all parameters are as given in the sample file)
does not load the existing *.onnx file, but throws an exception.

What could cause this problem?
What did I wrong when I built OpenCV?

I tried to find another *.onnx file within the opencv-zoo. But all files I tried did not load.

Can someone point me to the right direction to make the sample working.
Thanks in advance
herb

2

No code no help!

No data no help. where is face_detection_yunet_2023dec.onnx? I can only found face_detection_yunet_2023mar.onnx

Exception which one?

and this is working
x = cv.dnn.readNet("face_detection_yunet_2023mar.onnx")

3

Hello,

thanks for your quick replay

This question/comment brought us to the right direction.
We had a building problem: library protbuf was missing.

So the problem was sitting in front of the screen.
Thanks again and
best regards
herb