how can i find diagonal line in image?

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nadia
nadia 2016-10-19
回答： Swarooph 2016-10-19
I have an image which contains canny output of it. now, I want to find diagonal line that exist in top left part of image. do you have any idea?

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Swarooph
Swarooph 2016-10-19
You can use hough transform to detect lines. Once lines are detected, you can use properties such as theta on the houghlines structure to filter your lines compared to a reference line.
Take a look at this example to see how to use hough transform to detect lines in MATLAB.

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