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JetsonHacksNano / CSI-Camera

Simple example of using a CSI-Camera (like the Raspberry Pi Version 2 camera) with the NVIDIA Jetson Developer Kit
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[BUG] face_detect.py crash on detectMultiScale #21

Closed EnricoBeltramo closed 4 years ago

EnricoBeltramo commented 4 years ago

Describe the issue starting face_detect.py, I have follow error: Traceback (most recent call last): File "/home/jetson/CSI-Camera/face_detect.py", line 83, in face_detect() File "/home/jetson/CSI-Camera/face_detect.py", line 58, in face_detect faces = face_cascade.detectMultiScale(gray, 1.3, 5) cv2.error: OpenCV(3.4.6) /home/jetson/src/opencv-3.4.6/modules/objdetect/src/cascadedetect.cpp:1698: error: (-215:Assertion failed) !empty() in function 'detectMultiScale'

What version of L4T/JetPack L4T/JetPack version: nv-jetson-nano-sd-card-image-r32.3.1

What version of OpenCV OpenCV version: 3.4.6

Python Version Python version if applicable: 3.6

To Reproduce Steps to reproduce the behavior: For example, what command line did you run? run face_detect.py

Expected behavior A clear and concise description of what you expected to happen. program don't crash

Additional context Add any other context about the problem here.

JetsonHacksNano commented 4 years ago

Please try the latest release.

EnricoBeltramo commented 4 years ago

I found the issue. The xml files for detection: "/usr/share/opencv4/haarcascades/haarcascade_frontalface_default.xml" "/usr/share/opencv4/haarcascades/haarcascade_eye.xml" wasn't present (or may be in diefferent position) in my opencv installation. I downloaded the from opencv source repository and changed the path. Now it works fine