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Why iris scanning can be a biometric

 
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Old 08-21-2010
Why iris scanning can be a biometric

Some great high-resolution shots of human irises.  The detail here shows why iris scanning can be used as a distinguishing biometric.  Of course, posting high-resolution shots of your biometrics on a Website can be a great way to compromise your biometrics ...Image
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DIZZY-RENDER(8) 					User Contributed Perl Documentation					   DIZZY-RENDER(8)

NAME
dizzy-render - seed a directory with cached texture files SYNOPSIS
dizzy-render -o output-dir -r resolution [names...] DESCRIPTION
dizzy-render can be used to preseed a directory with cached textures. Why an extra tool, if Dizzy can do this itself? Well, people might want to generate textures in the installation script of a distro package, where it's unlikely or at least unwanted that an X11 program spawns to render textures. OPTIONS
-o output-dir --output-path output-dir Dump the textures to this directory. The directory will be created if it does not exist. The default value is /var/cache/dizzy/textures. -r resolution --resolution resolution Sets the resolution at which the textures will be rendered. The default value is 256, just like Dizzy's default resolution. The options can be followed by a list of names. If there are any such names specified, only textures with these names will be rendered. CAVEATS
This tool cannot make use of GLSL shaders to speed up rendering. But on the other hand, the cache files are not portable, and there is no need to generate them on a GLSL supporting machine. This is not even recommended, as performance tests have shown GLSL rendering to be much faster than loading the textures from disk for high resolutions. perl v5.14.2 2011-11-02 DIZZY-RENDER(8)