Hough transformation and Detecting parallel lines
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how can i compare edge of a rectangle with a theoretical line straight line and see if they are parallel and if they are not i want to rotate the rectangle until the side of it is parallel to the line. should i use hough transformation or what method best suites this application. Thank you.
回答（1 个）
I = imread('rectangle.jpg');
I2 = rgb2gray(I);
%Get the 2 lines
I3 = I2 > 60 & I2 < 75;
% Clean image
I4 = bwareaopen(I3,20);
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