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Re: [Imgcif-l] High speed image compression

• To: imgcif-l@iucr.org
• Subject: Re: [Imgcif-l] High speed image compression
• From: Jon Wright <wright@esrf.fr>
• Date: Thu, 28 Jul 2011 22:38:58 +0200
• In-Reply-To: <4E31AE8C.8040405@rayonix.com>
• References: <4E31AE8C.8040405@rayonix.com>

Do you need to write images synchronously? It might be easier to have a 
pool of threads (or processes) which act as a buffer and handle one 
image each.

Cheers,

Jon



On 28/07/2011 20:46, 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
>
>
>
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> imgcif-l@iucr.org
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