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Re: Displaying thicker lines on an image [message #76163 is a reply to message #76162]

Sat, 21 May 2011 06:40

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

wlandsman writes:

> I have been using edge detection algorithms, so i end up with an image with values of 255 on the lines defining the edges, and zeros everywhere else. However, when I display the image, the lines don't show up well, so for display purposes I want to make the lines thicker. If I had created the lines with the PLOT command, I would adjust the THICK keyword. But for an image I think I need an algorithm that will identify neighboring pixels to the existing lines.

You might try dilating with a cross as a structuring element.

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")

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[Message index]

		Re: Displaying thicker lines on an image By: Bringfried Stecklum on Sun, 22 May 2011 23:56
		Re: Displaying thicker lines on an image By: David Fanning on Sat, 21 May 2011 06:49
		Re: Displaying thicker lines on an image By: David Fanning on Sat, 21 May 2011 06:40
		Re: Displaying thicker lines on an image By: wlandsman on Tue, 24 May 2011 07:59

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