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My goal is to implement the tutorial as below. https://docs.opencv.org/4.7.0/df/dfa/tutorial_line_descriptor_main.html

I found BinaryDescriptor in OpenCV/Python. https://docs.opencv.org/4.x/dc/ddd/group__line__descriptor.html

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I tried to use it, but failed.

bd = cv.createBinaryDescriptor()

But I only show the message:

AttributeError: module 'cv2' has no attribute 'createBinaryDescriptor'

Christoph Rackwitz
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Yuri Soeda
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  • The bit of documentation you highlighted says `cv.line_descriptor.BinaryDescriptor.createBinaryDescriptor()`, not `cv.createBinaryDescriptor()`, but that aside, this functionality is from contrib, so you need to use a build of OpenCV that includes contrib modules (the standard binary releases usually don't). – Dan Mašek May 23 '23 at 19:20
  • Thanks! It is reasonable. By the way, how can I build contrib modules and build it? – Yuri Soeda May 24 '23 at 09:14
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    don't, unless you're absolutely sure that you have to. instead, remove all opencv packages, then `pip install opencv-contrib-python` – Christoph Rackwitz May 24 '23 at 11:42

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