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[Imgcif-l] High speed image compression

• To: imgcif-l@iucr.org
• Subject: [Imgcif-l] High speed image compression
• From: Justin Anderson <justin@rayonix.com>
• Date: Thu, 28 Jul 2011 13:46:36 -0500
• Organization: Rayonix, LLC

Hello all,

I have run Graeme's byte offset code on a 4k x 4k (2 byte depth) 
Gaussian noise image and found it to compress the image in around 150 ms 
(64-bit RHEL, Pentium D 3.46GHz).  Using CBF library with byte offset 
compression, I find the compression takes around 125 ms.

This will be too slow to keep up with our high speed CCD cameras.  We 
are considering parallelizing the byte offset routine by operating on 
each line of the image individually.  Note that this would mean that a 
given compressed image would be stored differently than via the whole 
image algorithm.

Has anyone been thinking about this already or does anyone have any 
thoughts?

Regards,

Justin

-- 
Justin Anderson
Software Engineer
Rayonix, LLC
justin@rayonix.com
1880 Oak Ave. #120
Evanston, IL, USA 60201
PH:+1.847.869.1548
FX:+1.847.869.1587

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