may i have the matlab code for checking a rectangle in an image?

i want to check is there any rectangle in an image. may i have the matlab code for this?

[Walter Roberson]

Will the rectangle be aligned with the horizontal? Or could it be rotated?

Answer 1

[Image Analyst]

Yes, there are things you can do, like trying the corner() function, or hough() or houghlines(). Or you might be able to just do simply thresholding. That's about all I can say unless you upload an image. Would you do that?

[Shaila parvin]

are they bulit in functions?

[Image Analyst]

They are included in the Image Processing Toolbox.