Comparing different image compression programs has always been difficult. As a suite of test images and a place for archiving results, the Waterloo BragZone hopes to overcome these problems. Central to the effort is the Waterloo Repertoire, a suite of 32 test images
Created: 14/11/1999
by Mark NelsonMore...
The USC-SIPI image database is a collection of digitized images. It is maintained primarily to support research in image processing, image analysis, and machine vision. Contains copies of the mystical goddess Lenna.
Created: 08/11/1999
by Mark NelsonMore...
A set of test sequences in QCIF format plus additional H.263 sequences. Used by the Video Coding Experts group, which seems to be part of an ITU group.
Created: 16/05/2004
by Mark NelsonMore...
I believe this page contains test sequences and software for the Video Quality Experts group. It appears that the software and sequences are available for the public.
Created: 16/05/2004
by Mark NelsonMore...
Sebastian Deorowicz decided to create a compression corpus of his own, attempting to overcome some of the deficiencies he sees in the old guard.
Created: 23/06/2003
by Mark NelsonMore...
David Cary is a major link farmer. One of the sections of his massive Data Compression page has links to various images and files that are used in various benchmarks.
Created: 01/05/2003
by Mark NelsonMore...
The folks at LIVE conducted a subjective test of images at various compression levels, and have made the results available here. The images and results are both available here.
Created: 23/04/2003
by Mark NelsonMore...
Part 4 of the standard relates to conformance. The files on this site are used in conformance testing. This web site implies that this part of the standard will soon be available for free, but as of March, 2003, this is not the case.
Created: 31/03/2003
by Mark NelsonMore...
Jurgen Abel has a great Data Compression site, and keeps a set of pointers to standard sets of files used for compression. He recently added a reference to the Protein Corpus, a set of difficult to compress files that were first published at the 1999 Data Compression Conference.
Created: 17/02/2003
by Mark NelsonMore...
This page contains links to sample code and test data for implementing the JPEG 2000 standard. Looking for conformance files? This is the place. Looking for working implementations? You can find several here.
Created: 19/01/2003
by Mark NelsonMore...
This site has links to a few standard test images and sequences, including 512x512 8 bit images, and a good selection of QCIF sequences.
Created: 29/09/2002
by Mark NelsonMore...
This is described as the ftp server for the Video Coding Experts Group, which is working on H.26L and other video projects. A ton of stuff here, no guideposts or indices, have at it.
Created: 06/06/2002
by Mark NelsonMore...
This site has a nice collection of codecs, including DirectShow filters, MPG4, MJPEG, and other video codecs. A few audio codecs and AVI test sequences as well.
Created: 02/06/2002
by Mark NelsonMore...
Welcome to media.xiph.org, a repository for freely-redistributable test sets. We use these to test our codecs, and hope you will too. This site includes a partial mirror of the Video Quality Experts Group test sequences as well.
Created: 03/04/2002
by Mark NelsonMore...
No details, but it appears to be a collection of files designed to represent a slightly wider range of modern applications.
Created: 25/12/2001
by Mark NelsonMore...
Images commonly used in compression tests are stored here in Sun raster format. At this time I believe that all you will find here are gray scale images.
Created: 25/12/2001
by Mark NelsonMore...
Some speech samples that have been encoded at various rates using various codecs. If you've never heard speech encoded at 1.4 Kbps, here's a chance to check it out.
Created: 08/05/2001
by Mark NelsonMore...
Lots of information on this site concerning compression of still pictures, moving pictures, and audio. Much of the site is devoted to comparisons of a few different algorithms. A report section draws a few conclusions about the whole thing.
Created: 25/10/2000
by Mark NelsonMore...
Links to lots of info regarding the audio compression portions of the MPEG standards. This includes an overview, the MPEG Audio FAQ, pointers to resources, some free software, and test bitstreams.
Created: 19/11/1999
by Mark NelsonMore...
A SET of 23 images totalling 27,133,146 bytes. The file type is RAS, does that mean that the files are a simple raster dump? I'm not sure. These files are listed in a few different places as being used in benchmarks.
Created: 28/10/1999
by Mark NelsonMore...
This is the home page for the Canterbury Corpus, a test suite designed to provide a standard set of files for lossless compressoion testing. You will find links to the actual files in the test suite, as well as papers and test results.
Created: 21/09/1999
by Mark NelsonMore...
The British National Corpus (BNC) is a 100 million word collection of samples of written and spoken language from a wide range of sources, designed to represent a wide cross-section of current British English, both spoken and written.
Created: 21/09/1999
by Mark NelsonMore...
The primary site for downloading LZO files. This includes mini-LZO, a shrunk down version of the LZO library, Perl-LZO, and Python-LZO.
Created: 23/12/1998
by Mark NelsonMore...
