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Asked: 2026-06-09T13:42:43+00:00

I am stuck with a problem that is how to recognize some patterns in

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I am stuck with a problem that is how to recognize some patterns in image.

the image is the image of paper which is pure white and the patterns are in four corners are in black.
I want to recognize the black patterns on the image?

I surf a lot on the net and found that the opencv as a answer. but there is nothing provided that describe how to use opencv in order to achieve the required feature.

Please help me with some coding point of view or provide some link which I should follow or any name of any open source library which I should use to achieve this feature.
The image for pattern is below:-
enter image description here

The image consist of pure white background and four black patterns in the corner.I need to recognize these black patterns in the all four corners all then process the image.One corner shown in oval to highlight it.

Any suggestions will be highly appreciated.

Thanks in advance!

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1 Answer

  1. Editorial Team

    Maybe this question is helpful for you, especially the link to the Tennis Ball Recognizing Tutorial seems to be pretty much what you are looking for.

    Regarding how to use OpenCV on iOS you might want to take a look at OpenCV-iOS and Computer Vision with iOS.

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