Hough transformation and Detecting parallel lines

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Elie on 13 Feb 2014
Edited: Nitin on 16 Feb 2014
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.

Answers (1)

Nitin on 16 Feb 2014
Edited: Nitin on 16 Feb 2014
I = imread('rectangle.jpg');
I2 = rgb2gray(I);
%Get the 2 lines
I3 = I2 > 60 & I2 < 75;
% Clean image
I4 = bwareaopen(I3,20);
%Search for lines in image and estimate angle between them using Hough

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