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	<title>Comments on: Revolutionary Object-Tracking Video Software Released as Open Source</title>
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	<link>http://techland.time.com/2011/04/07/revolutionary-object-tracking-video-software-released-as-open-source/</link>
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		<title>By: aaronwetzler</title>
		<link>http://techland.time.com/2011/04/07/revolutionary-object-tracking-video-software-released-as-open-source/comment-page-1/#comment-17641</link>
		<dc:creator><![CDATA[aaronwetzler]]></dc:creator>
		<pubDate>Wed, 20 Apr 2011 17:50:52 +0000</pubDate>
		<guid isPermaLink="false">http://techland.time.com/?p=75361#comment-17641</guid>
		<description><![CDATA[@manwhojaped: Really? Would you like to name them or point us to some reference to them? If theyve been working for the last 20 years they must be pretty good.]]></description>
		<content:encoded><![CDATA[<p>@manwhojaped: Really? Would you like to name them or point us to some reference to them? If theyve been working for the last 20 years they must be pretty good.</p>
]]></content:encoded>
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		<title>By: manwhojaped</title>
		<link>http://techland.time.com/2011/04/07/revolutionary-object-tracking-video-software-released-as-open-source/comment-page-1/#comment-17264</link>
		<dc:creator><![CDATA[manwhojaped]]></dc:creator>
		<pubDate>Thu, 07 Apr 2011 15:02:02 +0000</pubDate>
		<guid isPermaLink="false">http://techland.time.com/?p=75361#comment-17264</guid>
		<description><![CDATA[Sorry...
This is nothing new. Maybe new to you, but 20 yrs old tech to me. This is an example of a class of (visual) pattern recognition algorithms. These algos were first used in analyzing moon photos by NASA over 20 yrs ago. My company and others (again - 20 yrs ago) used similar algos as position feedback for robotic systems. Such algos can have many properties: scale invariance (how well does the recognition perform if the object is moved away from the camera), rotation invariance, lighting invariance, etc. If you look closely (I did) this algo does not seem to be rotationally invariant as it loses lock when the hand is rotated.
Worth a PhD? Hmmm...]]></description>
		<content:encoded><![CDATA[<p>Sorry&#8230;<br />
This is nothing new. Maybe new to you, but 20 yrs old tech to me. This is an example of a class of (visual) pattern recognition algorithms. These algos were first used in analyzing moon photos by NASA over 20 yrs ago. My company and others (again &#8211; 20 yrs ago) used similar algos as position feedback for robotic systems. Such algos can have many properties: scale invariance (how well does the recognition perform if the object is moved away from the camera), rotation invariance, lighting invariance, etc. If you look closely (I did) this algo does not seem to be rotationally invariant as it loses lock when the hand is rotated.<br />
Worth a PhD? Hmmm&#8230;</p>
]]></content:encoded>
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		<title>By: kidseyemd</title>
		<link>http://techland.time.com/2011/04/07/revolutionary-object-tracking-video-software-released-as-open-source/comment-page-1/#comment-17261</link>
		<dc:creator><![CDATA[kidseyemd]]></dc:creator>
		<pubDate>Thu, 07 Apr 2011 13:29:08 +0000</pubDate>
		<guid isPermaLink="false">http://techland.time.com/?p=75361#comment-17261</guid>
		<description><![CDATA[This is phenomenal. It has vast, incredible, useful implications.]]></description>
		<content:encoded><![CDATA[<p>This is phenomenal. It has vast, incredible, useful implications.</p>
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