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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] cascadedetect.cpp:1689: error: (-215:Assertion failed) !empty() in function 'detectMultiScale' #22

Closed lackdaz closed 4 years ago

lackdaz commented 4 years ago

Describe the issue

  File "face_detect.py", line 83, in <module>
    face_detect()
  File "face_detect.py", line 58, in face_detect
    faces = face_cascade.detectMultiScale(gray, 1.3, 5)
cv2.error: OpenCV(4.2.0) /tmp/build_opencv/opencv/modules/objdetect/src/cascadedetect.cpp:1689: error: (-215:Assertion failed) !empty() in function 'detectMultiScale'

I've seen an issue like this in #21 , I've checked his fix but both files were present in my opencv build.

What version of L4T/JetPack L4T/JetPack version: Linux 4.9.140-tegra aarch64

What version of OpenCV OpenCV version: 4.2.0 I used mdegans's build script

Python Version Python version if applicable: Python 2.7 (cv4 didn't seem to be installed for Python3, still defaulting to 3.3.1)

To Reproduce Steps to reproduce the behavior: python face_detect.py

Expected behavior Don't crash!

Additional context Should I be running your OpenCV4 build script instead? Is it too late now? I'm running your latest release.

By the way, I would like to take the opportunity to express my gratitude for your video content. It's pull me out of one-too-many pipeline problems. Its such terrific content that deserves way more attention

lackdaz commented 4 years ago

I managed to fix this by correcting the filepath. mdegans's build script installs it as /usr/share/OpenCV vs /usr/share/opencv4 for yours.

Ok now that I have it working, but sadly, only the video comes on and I'm missing the blue lines and green boxes :(

EDIT: I placed a photo of Brad Pitt and it registered. Oh well

Gralios commented 4 years ago

what i need make to complete the face identification?