Object detection in an image

Hi,

I am a beginner at image processing in MATLAB and I am asking about examples of how to detect squares in an image.

[Meg Noah]

Are these binary (black and white) or greyscale images?

I'd suggest learning about morphological filters - erode, dilate, open, close, etc.

These spatial operators can be used to find and sort by size squares, rectangles, and other shapes.

Look at imopen and imclose.

Answer 1

[Image Analyst]

There are plenty of examples in the File Exchange:

https://www.mathworks.com/matlabcentral/fileexchange?q=QR+code

Don't turn in the code as if it were your own invention though or you could get in trouble with your university.

[Image Analyst]

No one said it would be easy. But I think your professor thinks you're capable enough or else they wouldn't have assigned it to you as homework. Everyone has confidence in you except you.

Answer 2

[yanqi liu]

yes，sir，delete this comment

[Image Analyst]

Do you have a reference link for where to get the qr_code_extract() function?

[yanqi liu]

yes，sir，delete this comment

[Toqa Morshidi]

Thank you so much sir! I have sent you a msg. Kindly check it, please?

[yanqi liu]

yes，sir，delete all the answer？

[Toqa Morshidi]

Yes, please.

And again, thank you so much!

[Image Analyst]

At least click the "Vote" icon on her (and my) answers to give her credit for spending the time to help you. 🙂

[Toqa Morshidi]

Sorry,sir. It is my first time to use mathworks and I don't know these things but I really appreciate your effort and time.