Article View: sci.image.processing
Article #1036Re: Photo-CD Technical Details
From: Marc T. Kaufman
Date: Wed, 13 Jan 1993 02:18
Date: Wed, 13 Jan 1993 02:18
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cs90deh@brunel.ac.uk (Darryl E Humphrey) writes: >Does anybody know what is the actual hardware configuration used, and what kind >of software is used in these machines? I was very surprised to read that a >machine such as this was used for such image processing, as to digitise a >photographic image, store the resulting data file, and then save onto Compact >Disc format not only requires a huge amount of backing storage space (assuming >you aim to reproduce the image quality obtainable by modern camera film), but >also a very high-powered system to process this information. I would have >assumed that the task would have been carried-out on something on a much larger >scale! >Any details? Well, a "typical" full resolution PhotoCD image (2048 x 3072, 24 bit color) compresses to about 4MB on the CD. That doesn't require an inordinate amount of backing store. As I understand it, this is lossless compression. -- Marc Kaufman (kaufman@CS.Stanford.EDU)
Technical Details
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Newsgroups: sci.image.processing Path: arc1-ca.pugleaf.net!sparky!uunet!stanford.edu!CSD-NewsHost.Stanford.EDU!Xenon.Stanford.EDU!kaufman From: kaufman@Xenon.Stanford.EDU (Marc T. Kaufman) Subject: Re: Photo-CD Technical Details Message-ID: <kaufman.726891537@Xenon.Stanford.EDU> Sender: news@CSD-NewsHost.Stanford.EDU Reply-To: kaufman@CS.Stanford.EDU Organization: CS Department, Stanford University, California, USA References: <C0r7nq.1GL@brunel.ac.uk> Date: 13 Jan 93 02:18:57 GMT Lines: 21