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Re: [Imgcif-l] High speed image compression
- To: The Crystallographic Binary File and its imgCIF application to image data <imgcif-l@iucr.org>
- Subject: Re: [Imgcif-l] High speed image compression
- From: harry powell <harry@mrc-lmb.cam.ac.uk>
- Date: Fri, 29 Jul 2011 10:56:20 +0100
- In-Reply-To: <4E31AE8C.8040405@rayonix.com>
- References: <4E31AE8C.8040405@rayonix.com>
Hi Have you tried Eric Eikenberry's byte-offset compression? I found the decompression was ~20x faster than CBFlib when I implemented it in Mosflm. On 28 Jul 2011, at 19:46, Justin Anderson wrote: > 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 > > _______________________________________________ > imgcif-l mailing list > imgcif-l@iucr.org > http://scripts.iucr.org/mailman/listinfo/imgcif-l Harry -- Dr Harry Powell, MRC Laboratory of Molecular Biology, Hills Road, Cambridge, CB2 0QH _______________________________________________ imgcif-l mailing list imgcif-l@iucr.org http://scripts.iucr.org/mailman/listinfo/imgcif-l
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