Subject:
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Re: Parts Cataloging Program
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Newsgroups:
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lugnet.cad.dev
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Date:
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Wed, 29 Mar 2000 14:09:38 GMT
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Viewed:
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5795 times
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Rui:
> JPG is NOT lossy, i.e. it's NOT required to be lossy, it can be defined
> to be 100% accurate !
You are probably right, but JPEG is defined _for_ lossy
compression. It is definitely not the correct choice if you
want loss-less compression.
> Actually I think that the best format is the GIF format, due to the type
> of compressing it uses and our specific renderer used for the cataloging
> task.
Maybe, but GIF is covered by a patent (not a problem in
Europe yet), and PNG generally compresses much better than
GIF.
> - BMP in it's pure form, it's just like a memory dump, but with RLE
> compression could be good, but I don't actually know how the compression
> algo to provide an opinion. Also I think that BMP-RLE PROGRAMS have to PAY
> ROYALTIES or a LICENCE to be able to be distributed, but I' NOT sure
RLE can't possibly have been patented.
> - JPG is NOT apropriate for our part images, it's good for real images or
> images which contain shades, due to it's compressing algo.
Yes (but it is called JPEG).
> - PNG is good for the same types of images that JPG is good,
NO!!!
We developed PNG as an alternative to and improvement of the
GIF format.
- Loss-less compression
- Up to 64 bit/pixel (or is it more?)
- No patents
- Generally better compression than GIF (where the formats
can be compared)
Play well,
Jacob
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Message is in Reply To:
 | | Re: Parts Cataloging Program
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| (...) JPG is NOT lossy, i.e. it's NOT required to be lossy, it can be defined to be 100% accurate ! (...) Actually I think that the best format is the GIF format, due to the type of compressing it uses and our specific renderer used for the (...) (27 years ago, 27-Mar-00, to lugnet.cad.dev)
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