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	<title>Comments on: OpenCV: Edge Detection</title>
	<atom:link href="http://silveiraneto.net/2009/12/04/opencv-edge-detection/feed/" rel="self" type="application/rss+xml" />
	<link>http://silveiraneto.net/2009/12/04/opencv-edge-detection/</link>
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	<item>
		<title>By: Flip</title>
		<link>http://silveiraneto.net/2009/12/04/opencv-edge-detection/comment-page-1/#comment-12240</link>
		<dc:creator>Flip</dc:creator>
		<pubDate>Fri, 18 Nov 2011 16:00:48 +0000</pubDate>
		<guid isPermaLink="false">http://silveiraneto.net/?p=3004#comment-12240</guid>
		<description>http://www.kerrywong.com/2009/05/07/canny-edge-detection-auto-thresholding/</description>
		<content:encoded><![CDATA[<p><a href="http://www.kerrywong.com/2009/05/07/canny-edge-detection-auto-thresholding/" rel="nofollow">http://www.kerrywong.com/2009/05/07/canny-edge-detection-auto-thresholding/</a></p>
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	<item>
		<title>By: Mathias</title>
		<link>http://silveiraneto.net/2009/12/04/opencv-edge-detection/comment-page-1/#comment-9081</link>
		<dc:creator>Mathias</dc:creator>
		<pubDate>Thu, 21 Jul 2011 01:17:44 +0000</pubDate>
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		<description>Hi,

From trial and error I found that using the following settings worked best for me:

Low-threshold: 100
High-threshold: 200
Aperture: 5

Is there an easy way to calculate these values automatically. Maybe frames with less white and more longer lines have the better values, but testing all the values and checking each frame one by one (even automatically) would take a long time.

Your thoughts?</description>
		<content:encoded><![CDATA[<p>Hi,</p>
<p>From trial and error I found that using the following settings worked best for me:</p>
<p>Low-threshold: 100<br />
High-threshold: 200<br />
Aperture: 5</p>
<p>Is there an easy way to calculate these values automatically. Maybe frames with less white and more longer lines have the better values, but testing all the values and checking each frame one by one (even automatically) would take a long time.</p>
<p>Your thoughts?</p>
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