Compression that is specifically oriented towards still images is given here. Note that the more specialized compression algorithms such as JPEG and JBIG have their own sections, this tends to collect everything else.
IPsupermarket allows individuals, companies and business to license, buy or sell their various kind of audio codecs, video codecs, image codecs, speech codecs, wireless software, RTOS, device drivers, reference designs, patents and software IP.
Created: 22/10/2007
More...
This PHP class can be used to optimize images to fit within a given file size limit.
It takes a picture in any format supported by the GD library and generates a JPEG picture with the maximum quality factor that makes the picture file size not exceed a given limit.
This class is similar to the JPEG Reducer class. It uses the binary search algorithm to reach the ideal quality factor in the smallest number of iterations.
The class stops searching when a given number of limit iterations is reached or when the quality factor difference between the ideal and the found values is less than the configured precision value.
Created: 14/04/2007
More...
This paper shows how to improve lossless compression of natural images treating low order bits in a special way.
Created: 07/08/2007
by Maxim SmirnovMore...
Nelle immagini compresse con la quantizzazione dei coefficienti DCT si possono individuare senza alcuna difficoltà i bordi dei blocchi usati per la compressione. Questo fenomeno è spiacevole da vedere e quindi si deve tentare la sua riduzione, in questo documento si trattano alcune tecniche per farlo.
Created: 22/01/2007
More...
WMPhoto is a new format for image compression that is said to have better quality/compression ratio than that of current standards, including JPEG 2000. The main goal of this testing was the verification of superiority of WMPhoto by comparing it against nine JPEG 2000 codecs from last year's JPEG 2000 Image Codecs Comparison.
Created: 21/10/2006
by Dmitriy VatolinMore...
A number of useful links on LOCO-I/JPEG-LS, CALIC, PNG, FELICS, other lossless image compression algorithms, and test images.
Created: 17/03/2006
by Maxim SmirnovMore...
MSU VideoGroup have tested 9 main JPEG 2000 codecs with PSNR and visually to find a leader. All of them are better then JPEG, but there is some difference between them!
Were tested:
* JASPER 1.701.0
* ACDSee 7.0
* Leadtools JPEG 2000 Photoshop plug-in 1.0
* Morgan JPEG 2000 toolbox 1.2 rev 0.0
* Lurawave 2.1.10.04
* Kdu_compress 4.5.2
* JPEG 2000 Compressor (Anything 3D) 1.00.000
* Elecard Wavelet 3.0 Beta
* Photoshop CS2 ‘native’ plug-in 1.6
Created: 28/09/2005
by Dmitriy VatolinMore...
Due to the overwhelming number of requests for JPEG code that works with Borland C++Builder we have put out an version of the Colosseum Builders' Image Library for C++. The latest version includes encoders and decoders for JPEG, GIF, Windows BMP, XBM, and PNG. It also includes an interface to VCL so that these image formats can be used at design-time with C++Builder. The current version now works with MSVC++.
Created: 19/08/2001
by Mark NelsonMore...
Some pages that go along with the book "Managing Gigabytes", by Witten et.al. These pages are devoted to MG, "an open-source indexing and retrieval system for text, images, and textual images."
Created: 15/11/1999
by Mark NelsonMore...
A big batch of image compression papers are on line here. I guess the entire contents of all the papers is online thanks to the contributions of the US government. For image compression, this is a fantastic resource.
Created: 26/04/2000
by Mark NelsonMore...
The second edition of Managing Gigabytes: Compressing and Indexing Documents and Images by Ian H. Witten, Alistair Moffat, and Timothy C. Bell, is now available (May 1999), published by Morgan Kaufmann Publishing, San Francisco, ISBN 1-55860-570-3.
Created: 28/10/1999
by Mark NelsonMore...
"Compressed Image File Formats is an appealingly compact and useful guide to some of today's most popular file formats used for image data. For any programmer who needs to know how images are stored, this concise reference can serve as a really invaluable resource."
Note that the source code for this book includes an independent implementation of a PNG codec, which may be one of a kind. Link to the source code on this page.
Created: 21/03/2003
by Mark NelsonMore...
BMF program is lossless/near-lossless image compression utility by Dmitriy Shkarin. It supports true colour, high colour, greyscale and paletted images compression.
See last version on http://www.compression.ru/ds/ (in Russian)
Created: 07/11/1999
by Mark NelsonMore...
This page contains a summary of the Federal Bureau of Investigation's image coding standard for digitized fingerprints, developed and maintained by the FBI, Los Alamos National Lab, and the National Institute for Standards and Technology. The standard is a discrete wavelet transform-based algorithm referred to as Wavelet/Scalar Quantization (WSQ).
Created: 19/12/1998
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...
From the site: Computer images are extremely data intensive and hence require large amounts of memory for storage. As a result, the transmission of an image from one machine to another can be very time consuming. By using data compression techniques, it is possible to remove some of the redundant information contained in images, requiring less storage space and less time to transmit. Neural nets can be used for the purpose of image compression, as shown in the following demonstration.
Created: 02/11/1999
by Mark NelsonMore...
by Vasudev Bhaskaran, Kluwer Academic Publishers, Boston Hardbound, ISBN 0-7923-9952-8, 472 pp., $69.82. Based on tutorials by the authors in several forums, introduces the underpinnings of compression for still images (JPEG), video teleconferencing (H.261 and H.263) and video storage and broadcasting (MPEG-1 and MPEG-2); and briefly describes the next generation of audiovisual coding standards such as MPEG-4 and MPEG-7. Emphasizes foundations such as predictive coding, transform-based coding, motion estimation and compensation, and entropy coding. Suitable for self-study by engineers or as a supplementary text in a graduate course, and assumes no prior knowledge of image or video compression theory or architecture, but some background in high-level hardware design.
Created: 30/12/2001
by Mark NelsonMore...
DjVu is an image compression technique that is meant to be used on scanned documents. AT&T has created a browser plugin that supports DjVu files. AT&T claims that DjVu files are 5 to 8 times smaller than GIF or JPEG images of similar quality. Some public source code is provided here, but the exciting parts of DjVu are not available.
Update: I believe this project has morphed away from AT&T and into the Open Source World. The AT&T site has been gone since 6/2002, I hope that this represents its new incarnation.
Created: 03/09/2002
by Mark NelsonMore...
The home page for TMW. TMW is a program for losslessly compressing greyscale images that gives world class compression ratios, at the cost of being tremendously CPU intensive. The current version is TMW_0.51, and is still completely experimental
Created: 07/11/1999
by Mark NelsonMore...
by P. G. Howard and J. S. Vitter. This paper shows how images can be encoded and decoded using parallel processing. Both Huffman and arithmetic coding are examined.
Created: 28/07/2002
by Mark NelsonMore...
Xiaolin Wu's static Huffman coding version of this program. Free of charge for research and non-commercial use. A total of 1.2 MBytes in a dozen or so files.
Created: 13/11/1999
by Mark NelsonMore...
Jerry Gibson, Toby Berger, Tom Lookabaugh, Rich Baker and David Lindberg. Drawing on their experience in industry, research, and academia, this powerful author team combines their expertise to provide an accessible guide to data compression standards and techniques and their applications.
Created: 27/12/1998
by Mark NelsonMore...
Yet another imaging library that claims to support over 80 image formats under Win32. This is listed as an Alpha status project that is shipping version 0.14.0 as of July, 2004.
Created: 16/07/2004
by Mark NelsonMore...
ImageMagick is a robust collection of tools and libraries offered under a free license to read, write, and manipulate an image in many image formats (over 87 major formats) including popular formats like TIFF, JPEG, PNG, PDF, PhotoCD, and GIF. Programming interfaces are provided for C/C++, Java, Perl, VB, and more.
Version 6.0.3 is shipping in July, 2004.
Created: 10/07/2004
by Mark NelsonMore...
FreeImage is yet another free library for image reading, writing, and manipulation. FreeImage supports a long list of compressed formats, including JPEG, PNG, TIFF, and more. Claims to support multiple platforms, but it does apear that most of the experience with this project is on Win32 systems.
Version 3.4.0 is shipping in July, 2004.
Created: 10/07/2004
by Mark NelsonMore...
JIU, the Java Imaging Utilities, is a library which offers functionality to load, analyze, process and save pixel images. It is written in Java and comes with full source code under the GNU General Public License (GPL) version 2.
Created: 10/07/2004
by Mark NelsonMore...
An article on the CodeProject detailing a user's troubles with GDI+. In particular, he found that he was unable to load JPG or PNG files stored as resources with GDI+. This article presents a way to make it happen.
This article was updated June 17, 204.
Created: 27/06/2004
by Mark NelsonMore...
DevIL provides the code needed to load a wide variety of images into your program. A nice long list of images that can be loaded are listed here, and a smaller but still quite nice list of formats that can be written to. Displaying images is currently supported under OpenGL, Windows GDI, SDL, DirectX, and Allegro,
Version 1.6.7 shipped in June, 2004.
Created: 27/06/2004
by Mark NelsonMore...
GraphicsMagic is a branch off of the ImageMagick project. I suppose there are some interesting political machinations behind all that, but for right now you should just know that GraphicsMagick is attempting to provide a stable set of code that can be used in other free and proprietary products. This consists of a big batch of image processing library functions, as well as a command line tool that lets you easily exercise some of those functions.
Version 1.1.2 shipped in June, 2004.
Created: 13/06/2004
by Mark NelsonMore...
This article shows how to decode images with IImgCtx interface provided by IE. In addition to the image types decoded with the IPictur einterface, IImgCtx also decodes TIFF and PNG.
Created: 06/06/2004
by Mark NelsonMore...
Advanced Image Coding (AIC) is an experimental still image compression system
that combines algorithms from the H.264 and JPEG standards. More specifically,
it combines intra frame block prediction from H.264 with a JPEG-style discrete
cosine transform, followed by context adaptive binary arithmetic coding as used
in H.264. The result is a compression scheme that performs much better than JPEG
and close to JPEG-2000.
Created: 15/05/2004
by Mark NelsonMore...
A list of the various types of image compression that Accusoft supports, along with a little detail on each type.
Created: 10/05/2004
by Mark NelsonMore...
Netpbm is a C package of routines for conversion, rendering, and
manipulation of graphics files. The program understands a wide array of image formats, and best of all, is completely free.
The 10.22 release shipped in May of 2004.
Created: 02/05/2004
by Mark NelsonMore...
SIP intends to do imaging tasks such as filtering, blurring, edge detection, thresholding, histogram manipulation, segmentation, mathematical morphology, color image processing, etc.
These operations are useful for problem solving in real-world applications ranging from car motion planning to automatic diagnosis of medical images.
Version 0.3.1 is shipping as of May, 2004.
Created: 02/05/2004
by Mark NelsonMore...
From the site: Epic24 is a GUI program that I wrote to interactively compare graphic compression codecs against each other. It currently contains JPG, Lossless JPG, JPEG 2000, (Jasper Library Implementation), PNG, John Robinson's BTP and ATP, and finally my own lossless graphics compression called IMPLODE (IMage Predictive LOssless Decoder Encoder).
Created: 27/03/2004
by Mark NelsonMore...
APT (Adaptive Prediction Trees) image coding supersedes BTPC (Binary Tree Predictive Coding). It is a general-purpose compression scheme for all types of still image. It does both lossless and lossy compression of monochrome and color images from 1 to 16 bits per component. Its performance on all image types is often close to that of the best alternative.
Created: 27/03/2004
by Mark NelsonMore...
Yet another image library! This one promises to load, save, and display BMP, JPEG, GIF, PNG, MNG, and J2K compressed images.
Version 5.9 of this library shipped in February, 2004.
Created: 01/03/2004
by Mark NelsonMore...
A free program to deal with image formats in popular medical formats, including DICOM, SPM, PNG, and GIF.
Version 0.9.1 of (X)MedCon shipped in January, 2004.
Created: 11/01/2004
by Mark NelsonMore...
A Java library that can read a few different image file types. Currently that includes BMP, some TIFF, PNG, JPEG, and more, along with metadata from a few different file types,
Version 1.30 is shipping as of January, 2004
Created: 11/01/2004
by Mark NelsonMore...
ReaCompressor is an image compression tool that is designed to assist you in preparing images for the web, emailing, etc. It lets you choose from various formats: JPEG, PNG, GIF, and TIFF, and shows you the results of the compression on screen.
Version 1.8 shipped in October, 2003, and added support for JPG region specific compression and over 340 input formats.
Created: 02/11/2003
by Mark NelsonMore...
ImageGear from Accusoft is a super-capable imaging library, available in four different varieties. It supports the normal roster of file types, but also includes some more advanced image and file formats, such as PDF and JPEG-2000.
Version 13 is shipping as of October, 2003.
Created: 09/10/2003
by Mark NelsonMore...
OpenTiff is an object-oriented interface to TIFF formated image files. Unlike other Tiff toolkits, it allows an arbitrary set of tags to be defined and used in a Tiff file.
Created: 25/09/2003
by Mark NelsonMore...
This archiver is built specifically for support of image archiving. Supports popular formats such as JPG and BMP.
Created: 15/09/2003
by Mark NelsonMore...
This open source Linux project converts image files (JPEG, GIF, PNG, etc.) to Encapsulated PostScript, in what is supposed to be an efficient manner.
Created: 12/09/2003
by Mark NelsonMore...
This code project piece uses the octree algorithm to reduce the number of colors in a bitmap. Like most of the code project stuff, it is implemented as a class compatible with Visual C++ and MFC.
Last update of this article was September, 2003.
Created: 04/09/2003
by Mark NelsonMore...
This article by Amer Gerzic uses GDI+ to load an image, then compresses it into memory. In the sample code he loads a BMP file and converts it to an in-memory JPEG file.
Created: 18/08/2003
by Mark NelsonMore...
MediaZip is a Windows program that performs lossless compression/decompression and manages archives of media files (Sound and Picture). Welcome to the MediaZip home page.
Created: 15/08/2003
by Mark NelsonMore...
This product performs a huge number of conversions among different media types. Want to convert your huge collection of MP3 files to WMA? No problem. MPEG-2 to AVI? No problem. MediaConvert even handles some unusal conversions, such as video to animated GIF. And naturally, a huge number of conversions between various image formats, including GIF, JPG, PNG, and a host of additional types.
Release 2.3 shipped in Julyy, 2003.
Created: 15/07/2003
by Mark NelsonMore...
Alexander Simakov has created a streaming, DCT-based, lossy compression library that works on gray scale images. This is a shareware library that works with Win32 programs. Registered users get source code, samples in several languages, and help files in English and Russian.
Created: 20/06/2003
by Mark NelsonMore...
This article on the Codeguru site by Michael Chourdakis demonstrates how to use the Windows IPicture interface to quickly load a JPEG, GIF, or BMP file into an easy to use HBITMAP. This is of course assuming you are using C on the Win32 platform.
Created: 17/06/2003
by Mark NelsonMore...
This library lets you read XMP image files using Personal Java - a defunct standard targeted at handhelds and other slighly constrained platforms.
Created: 12/06/2003
by Mark NelsonMore...
Software to convert the proprietary KDC files produced by Kodak digital cameras into JPEG or TIFF format. Appears to work under Linux only.
Created: 30/05/2003
by Mark NelsonMore...
Robert Estes (UCDavis - image compression research). Robert has pointers to many of his papers on this page. He has info on Wavelet-based image compression, image compression, plus some peripherally related topics such as image quality.
Created: 26/05/2003
by Mark NelsonMore...
iRad is an open source project written to view DICOM files
on your Mac systems running OS X. For those of you not in
the know, DICOM is a set of standards for storing and accessing
medical imagery. It is written to help with the unique requirements
that the medical industry has for imaging.
Version 1.4 is shipping in a beta version in May, 2003.
Created: 26/05/2003
by Mark NelsonMore...
This open source project is an implementatoin of DICOM in Java. DICOM refers to the Digital Imaging and Communications in Medicine standard, which provides standards for moving pictures around in medical applications.
Created: 11/05/2003
by Mark NelsonMore...
This library is able to product PDF documents from VB, Delphi, and Visual C++. This naturally includes the ability to create compressed images using jpeg, zlib, and CCITT formats.
Created: 11/05/2003
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...
This nifty program performs batch conversions of programs from a wide variety of types, including JPEG, BMP, TIF, PNG, and the usual other suspects. Lots of other features are added to the mix, including such goodies as watermark insertion, cropping, sharpening, blurring, etc.
Version 3.0 shipped in April, 2003.
Created: 01/04/2003
by Mark NelsonMore...
A definition from searchStorage.com. MrSID is an image compression format used primarily in mapping/GIS applications.
Created: 30/03/2003
by Mark NelsonMore...
John Robinson's page on BTPC, which includes documentation, samples, links, and source. BTPC is designed to do both lossy and lossless compression of images.
John updated this package to version 5 in March, 2003.
Created: 13/03/2003
by Mark NelsonMore...
Alex Ng posed the question on comp.compression: "In general, you cannot have one image coder can compress well for ALL
images. Why?"
This set off a lively and somewhat useful discussion, with lots of thoughtful posts from Thomas Richter and others. Always good to find some intelligent thought on the compression newsgroup.
Created: 07/03/2003
by Mark NelsonMore...
This product is advertised as a revolutionary compression package from QuickCAT Technologies. It comes in two versions: a Pro package that compresses documents and images, and a Basic version that compresses only images.
Created: 28/02/2003
by Mark NelsonMore...
The LuraWave OCX is an OLE-Control ready to be integrated into numerous development environments such as MS Visual C++, MS Visual Basic, Borland Delphi, and several of the MS Office components. This product allows you to easily load and decompress Lurawave images, as well as converting to/from TIFF and BMP formats. A demo version is available which limits you to 640x480 pixels.
Created: 17/02/2003
by Mark NelsonMore...
A company that makes PhotoJazz, a lossless compression plug in package that they describe as having Breakthrough lossless photo-quality compression of stills and movies for archival, print, and the Internet. Version 2.0 supports Mac and Windows, Photoshop, QuickTime, and Quark. You can download the Reader for free and try it out.
Created: 13/12/2002
by Mark NelsonMore...
A Java library released under the LGPL license for extracting text and images from pdf files, with full source code and examples. It also provides a rasterizer.
A commercial product called WinPedal is also available. WinPedal is an EXE that has grouping functionality that converts PDF text into XML.
Created: 30/10/2002
by Mark NelsonMore...
Full-featured batch image processing and conversion software. Over 70 image formats are supported, and the software provides an extensive array of image enhancement, editing, and processing operations. All processing and conversion operations have numerous options that can be optionally set for maximum control. The entire application is highly customizable. AutoImager also offers complete command-line support. With over 130 configurable command-line choices, it's easy to create batch files to perform image processing tasks which may need to be done routinely. A list of available features far too long to list here.
Created: 05/10/2002
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 page contains information and links which are small a sampling of compression research that has been performed using the Lena image.
Created: 29/09/2002
by Mark NelsonMore...
David Clunie is the chair of the DICOM standards committee, and has a wealth of links on this page to information related to medical imaging.
Created: 28/09/2002
by Mark NelsonMore...
This page has a number of papers related to the DjVu compression format. Papers are all posted in ps.gz and DjVu formats. Note that you'll need the DjVu plugin to read them in that format.
Created: 03/09/2002
by Mark NelsonMore...
This page gives a short introduction to the DICOM standard, commonly used for medical imaging. It has a lengthy set of links to DICOM viewers, images, and other resources.
Created: 18/08/2002
by Mark NelsonMore...
This imaging library from PegasusImaging supports reading and writing of a wide variety of compressed image formats, including JPEG, GIF, and PNG. JPEG2000 and Lossless JPEG are advertised as available with add-on packages.
Created: 18/08/2002
by Mark NelsonMore...
Intel has created a new library designed to deal with varous primitives used in Data Compression. Intel says: Intel® Integrated Performance Primitives (IPP) is a software library which provides a range of library functions for multimedia, audio codecs, video codecs (for example H.263, MPEG-4), image processing (JPEG), signal processing, speech compression (i.e. G.723, GSM ARM*) plus computer vision as well as math support routines for such processing capabilities.Unlike their previous libraries, this is now a commercial product which is going to cost you as much as $199. Works with Windows and Linux.
Created: 18/08/2002
by Mark NelsonMore...
VcDemo is an interactive image and video compression (freeware) software package for Windows. It is intended as a tool for learning about compression techniques: from basic sampling and PCM to today's most advanced scalable embedded zerotree wavelet image compression technique and the MPEG video compression standard. VcDemo is an ideal tool for students to explore the possibilities of compression theory using textbook algorithms on real images. The package is also very suitable for on-line demonstrations in lectures. A user manual is available, as well as a set of exercises that can serve as home work.
Created: 01/08/2002
by Mark NelsonMore...
by P.G> Howard and J.S. Vitter. This paper from DCC '92 describes an improved method for error modeling in hierarchical lossless image compression.
Created: 28/07/2002
by Mark NelsonMore...
A senior project whose goal was to design a hardware compressor for continuous tone images. Contains a description of the algorithm, Matlab implementations, chip designs, and more.
Created: 15/07/2002
by Mark NelsonMore...
by Subhasis Saha. A typical overview article, devoted to image compression, concentrates on JPEG and Wavelet-based methods. I don't know where this article appeared, but it looks to be peer-reviewed quality.
Created: 01/05/2002
by Mark NelsonMore...
This is billed as an introductory article with illustrations. I haven't seen it - it requires free registration with this game development site. If you're interested, please check it out and send me your thoughts.
Created: 01/05/2002
by Mark NelsonMore...
First sentence of the abstract says it all: We describe a new image coding approach in which a 4-ary arithmetic coder is used to represent significant coefficient values and the lengths of zero runs between coefficients
Created: 01/05/2002
by Mark NelsonMore...
This page presents the source code from the paper of the given name. The software at this time only supports eight-bit grayscale, but is free for research purposes.
Created: 01/05/2002
by Mark NelsonMore...
The Free, Quality Image library for Windows. This library decodes quite a number of image formats, but don't expect to see GIF in there anytime soon. Perhaps after the patent expires…
Created: 22/04/2002
by Mark NelsonMore...
An academic journal focusing on imaging and compression. It appears that all the papers published in this journal are available on line in PDF format!
Created: 19/04/2002
by Mark NelsonMore...
A directory of links and resources on compressing the 3D models used for computer graphics and other large geometric datasets. This is a replacement for the site at http://www.cc.gatech.edu/~kingd/3Dcompression.html.
Created: 11/04/2002
by Mark NelsonMore...
P. G. Howard and J. S. Vitter. ``Fast and Efficient Lossless Image Compression,'' Proceedings of the 1993 IEEE Data Compression Conference (DCC '93), Snowbird, UT, April 1993. The abstract describes this as a lossless compression algorithm that provides results as good as JPEG in lossless mode with five times the speed.
Created: 08/04/2002
by Mark NelsonMore...
P. G. Howard and J. S. Vitter. ``Fast Progressive Lossless Image Compression,'' Proceedings of the 1994 IST/SPIE International Symposium on Electronic Imaging Science and Technology, San Jose, CA, February 1994. This paper describes a technique that combines the author's previously published FELICS algorithm with the progressivity of the MLP method.
Created: 08/04/2002
by Mark NelsonMore...
This is a bi-level image compression scheme designed to be used for scanned images of books, faxes, etc. It is a non-degrading scheme, but not lossless. The company reports that their current customer list includes GetThePatent.com, FIS|Online, JSTOR, and Kurzweil. More information about clients and partners can be found
here.
Created: 08/04/2002
by Mark NelsonMore...
A program to compress images, plus a write up from author Doug Houghton. Doug says its simple and fast, and does pretty well on 24 bit color images. New release from Doug as of 3/2002
Created: 19/03/2002
by Mark NelsonMore...
KT-Tech seems to be active in various compression areas, developing their own algorithms rather than implementing standards. Their web site has demos of their latest still image and video technologies. One interesting product is software to improve the performance of other encoders, such as those used by Microsoft's Windows Media codecs.
Update: the web site now offers online demos of sound compression as well!
Created: 26/02/2002
by Mark NelsonMore...
The term "Multimedia" obviously covers a lot of different topics. Compression is one of them, and there is certainly a great deal to learn about compression and media formats at this conference.
Created: 24/02/2002
by Mark NelsonMore...
An article by Giovanni Motta and friends that appears in the Encyclopedia of Computer Science. Packs a lot of information into a short 8 or so pages.
Reader sreenu says: excellent article.
Created: 02/01/2002
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...
RICAZip.com has proprietary lossless image compression technology called RICA (Reversible Image Compression Algorithm). RICA retains original file formats (e.g. TIFF, DICOM, BMP, TGA, PGM etc.). RICACom says We have yet to find any method that provides better compression ratios (for truly lossless), including wavelet. On a PII 450MHz RICA compresses @ 6MB per second and decompresses at 12MB per second. Available as a standalone image archive app, Adobe Photoshop Plugin, Browser Plugin, and RICA SDK.
DCL reader Karen H. says: Evaluation of this product demonstates excellent compression ratios and it is also very fast compared to other methods I have used.
Created: 15/12/2001
by Mark NelsonMore...
The very long title of this PDF format paper pretty much obviates the need for any more description on my part.
Created: 15/12/2001
by Mark NelsonMore...
Lots of pointers here. Relevant to compression because of the wealth of pointers to various formats used in medical imaging, such as JPEG-LS and Lossless JPEG.
Created: 15/12/2001
by Mark NelsonMore...
ACDZip is a zipping and unzipping program that gives you the power to compress image, audio, video and document files. It includes fast image previews and is ideal for opening zip files, backing up files, saving hard disk space, preparing files for distribution and protecting them with encryption and passwords.
Created: 28/11/2001
by Mark NelsonMore...
Sample pages on line from the book Discrete Cosine Transform: Algorithms, Advantages, Applications by Kamisetty Ramamohan Rao, P. Yip. The first 6 pages of the book are excerpted here, giving a complete history of the DCT.
Created: 28/11/2001
by Mark NelsonMore...
Dali is a project at Cornell that aims to create a programming environment dedicated to the manipulation of video, audio, and image data. Naturally, this includes multiple codecs for various data types.
Created: 14/11/2001
by Mark NelsonMore...
Straightforward code compatible with Visual C++ and MFC for decoding and displaying JPEG, GIF, BMP, and a few other types of files.
Created: 08/10/2001
by Mark NelsonMore...
Glicbawls is a lossless and/or near-lossless image compression algorithm that apparently does really well on gray-scale images but perhaps not as well on color. This link points to an archived page, as the original has disappeared from the net. As a result, links on the page may or may not work propery
Created: 19/09/2001
by Mark NelsonMore...
Image Power makes this product which compresses documents using JBIG, GIF, and JPEG2000 encoders. This product is supposed to help you with web publishing, archiving, and image management.
Created: 23/08/2001
by Mark NelsonMore...
by Majid Rabbani and Paul W. Jones. This book shows up in at least one bibiblography, I would appreciate reviews from a reader.
Created: 05/08/2001
by Mark NelsonMore...
The book that accompanies the course of the same name. Russian-language submitter reports that the book has info on RLE, LZW, CCITT Group 3, Jpeg, Wavelet, and Fractal compression.
Created: 02/07/2001
by Mark NelsonMore...
