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	<title>Comments on: Digital camera noise signatures</title>
	<atom:link href="http://www.sindark.com/2008/05/02/digital-camera-noise-signatures/feed/" rel="self" type="application/rss+xml" />
	<link>http://www.sindark.com/2008/05/02/digital-camera-noise-signatures/</link>
	<description>dispatches from Canada's capital</description>
	<pubDate>Mon, 01 Dec 2008 17:41:00 +0000</pubDate>
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		<title>By: .</title>
		<link>http://www.sindark.com/2008/05/02/digital-camera-noise-signatures/#comment-55337</link>
		<dc:creator>.</dc:creator>
		<pubDate>Tue, 18 Nov 2008 03:01:27 +0000</pubDate>
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		<description>&lt;a href="http://yro.slashdot.org/yro/08/11/18/0115242.shtml" title="Slashdot &#124; Digital Photos Give Away a Camera's Make and Model" rel="nofollow"&gt;Digital Photos Give Away a Camera's Make and Model&lt;/a&gt;

"Engineers at Polytechnic University Brooklyn have discovered that digital snaps shorn of any metadata still reveal the make and model of camera used to take them. It is possible to work backwards from the relationships of neighboring pixel values in a shot to identify the model-specific demosaicing algorithm that combines red, green, and blue pixels on the sensor into color image pixels. Forensics teams are already licking their chops."</description>
		<content:encoded><![CDATA[<p><a href="http://yro.slashdot.org/yro/08/11/18/0115242.shtml" title="Slashdot | Digital Photos Give Away a Camera's Make and Model" rel="nofollow">Digital Photos Give Away a Camera&#8217;s Make and Model</a></p>
<p>&#8220;Engineers at Polytechnic University Brooklyn have discovered that digital snaps shorn of any metadata still reveal the make and model of camera used to take them. It is possible to work backwards from the relationships of neighboring pixel values in a shot to identify the model-specific demosaicing algorithm that combines red, green, and blue pixels on the sensor into color image pixels. Forensics teams are already licking their chops.&#8221;</p>
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	<item>
		<title>By: Anon</title>
		<link>http://www.sindark.com/2008/05/02/digital-camera-noise-signatures/#comment-41607</link>
		<dc:creator>Anon</dc:creator>
		<pubDate>Wed, 14 May 2008 17:36:21 +0000</pubDate>
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		<description>50 4E 47

In ASCII, the letters "PNG", allowing a person to identify the format easily if it is viewed in a text editor.</description>
		<content:encoded><![CDATA[<p>50 4E 47</p>
<p>In ASCII, the letters &#8220;PNG&#8221;, allowing a person to identify the format easily if it is viewed in a text editor.</p>
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	<item>
		<title>By: Milan</title>
		<link>http://www.sindark.com/2008/05/02/digital-camera-noise-signatures/#comment-38999</link>
		<dc:creator>Milan</dc:creator>
		<pubDate>Sat, 03 May 2008 12:56:27 +0000</pubDate>
		<guid isPermaLink="false">http://www.sindark.com/?p=2717#comment-38999</guid>
		<description>Tristan,

Destroying your camera won't prevent people from being able to use one photo you definitely took to prove that you also took others.

The best defence might be making a habit of lending your camera to shady criminal characters. That way, you can at least allege that someone else took the incriminating photos with your camera.

The link above goes to a page that speculates on some possible ways to remove the signature.</description>
		<content:encoded><![CDATA[<p>Tristan,</p>
<p>Destroying your camera won&#8217;t prevent people from being able to use one photo you definitely took to prove that you also took others.</p>
<p>The best defence might be making a habit of lending your camera to shady criminal characters. That way, you can at least allege that someone else took the incriminating photos with your camera.</p>
<p>The link above goes to a page that speculates on some possible ways to remove the signature.</p>
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	<item>
		<title>By: tristan</title>
		<link>http://www.sindark.com/2008/05/02/digital-camera-noise-signatures/#comment-38892</link>
		<dc:creator>tristan</dc:creator>
		<pubDate>Sat, 03 May 2008 02:59:24 +0000</pubDate>
		<guid isPermaLink="false">http://www.sindark.com/?p=2717#comment-38892</guid>
		<description>Do you know any simple way of processing photos to remove this signature? 

I suppose I should consider going back to film. Or destroying my camera after taking incriminating pictures with it.</description>
		<content:encoded><![CDATA[<p>Do you know any simple way of processing photos to remove this signature? </p>
<p>I suppose I should consider going back to film. Or destroying my camera after taking incriminating pictures with it.</p>
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