Recognizing digits with OpenCV and Python

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Recognizing digits with OpenCV and Python

In the first part of this tutorial, we’ll discuss what a seven-segment display is and how we can apply computer vision and image processing operations to recognize these types of digits (no machine learning required!)

From there I’ll provide actual Python and OpenCV code that can be used to recognize these digits in images.

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Автор

Running this code exactly as is, using the example image of the thermostat, I'm getting this error: OpenCV(4.8.1) error: (-215:Assertion failed) npoints >= 0 && (depth == CV_32F || depth == CV_32S) in function 'cv::contourArea'. I am struggling to get this working. Any thoughts?

NKP
Автор

It is possible to extract digits from other kind of images?

hanryhenry