Re: Lossless & Non-Degrading Lossing DCT-Based Coding

From	glen herrmannsfeldt <gah@ugcs.caltech.edu>
Newsgroups	comp.compression
Subject	Re: Lossless & Non-Degrading Lossing DCT-Based Coding
Date	2011-06-10 22:17 +0000
Organization	A noiseless patient Spider
Message-ID	<isu55t$kn2$4@dont-email.me> (permalink)
References	<48c3cb78-881a-4f00-a5fd-b7c00ec0d5fa@r17g2000yqc.googlegroups.com> <isbq53$g1n$1@news.belwue.de> <e67ab66a-2af1-40da-8208-70e029d7237f@g26g2000yqc.googlegroups.com> <isoltn$ajv$1@news.belwue.de> <5d6b4cd7-ceda-4523-a0c8-fa0ed8503fd9@v10g2000yqn.googlegroups.com>

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Rock Brentwood <federation2005@netzero.com> wrote:

(snip)

> A patent search (and IEEE journal search on "Integer DCT") takes the
> winds out of the sails of all these developments, big time. This was
> going on in the early Millennial decade [1]. Nowadays, the IEEE
> Journals are filled with 3-D modelling papers and the like. Probably
> something driven by MPEG-4 and MPEG-7 (and to a lesser degree
> JPEG-2000).

If you want an interesting case, search for "Simplified
Integer Cosine Transform."

It was developed for the case where the forward transform had to
be done on a slow processor without a multiplier.   (Specifically,
the RCA CDP1802, in 1994.)

The inverse transform could be done on a very fast processor.

This ICT optimized for the minimum number if '1' bits in the 
coefficients to get the appropriate compression.

-- glen

Thread

Lossless & Non-Degrading Lossing DCT-Based Coding Rock Brentwood <federation2005@netzero.com> - 2011-06-03 14:35 -0700
  Re: Lossless & Non-Degrading Lossing DCT-Based Coding Thomas Richter <thor@math.tu-berlin.de> - 2011-06-04 01:18 +0200
    Re: Lossless & Non-Degrading Lossing DCT-Based Coding Rock Brentwood <federation2005@netzero.com> - 2011-06-07 17:42 -0700
      Re: Lossless & Non-Degrading Lossing DCT-Based Coding Rock Brentwood <federation2005@netzero.com> - 2011-06-07 17:50 -0700
      Re: Lossless & Non-Degrading Lossing DCT-Based Coding Thomas Richter <thor@math.tu-berlin.de> - 2011-06-08 22:26 +0200
        Re: Lossless & Non-Degrading Lossing DCT-Based Coding Rock Brentwood <federation2005@netzero.com> - 2011-06-10 14:25 -0700
          Re: Lossless & Non-Degrading Lossing DCT-Based Coding glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2011-06-10 22:17 +0000
            Re: Lossless & Non-Degrading Lossing DCT-Based Coding Rock Brentwood <federation2005@netzero.com> - 2011-06-14 13:25 -0700
        It works beautifully with JPEG! (was: Lossless & Non-Degrading Lossing DCT-Based Coding) federation2005@netzero.com - 2015-05-07 17:52 -0700
          Re: It works beautifully with JPEG! Thomas Richter <thor@math.tu-berlin.de> - 2015-05-08 09:07 +0200

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