Subject:
|
Re: Parts Cataloging Program
|
Newsgroups:
|
lugnet.cad.dev
|
Date:
|
Wed, 29 Mar 2000 14:09:38 GMT
|
Viewed:
|
2055 times
|
| |
|
|
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
------------------------------------------------------------
-- E-mail: sparre@cats.nbi.dk --
-- Web...: <URL: http://hugin.ldraw.org/LEGO/Skibe/ > --
------------------------------------------------------------
|
|
Message is in Reply To:
 | | Re: Parts Cataloging Program
|
| (...) 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 (...) (25 years ago, 27-Mar-00, to lugnet.cad.dev)
|
16 Messages in This Thread:
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
