http://www.dspace.cam.ac.uk:80/handle/1810/3485 A collection of file format standards and software source Fri, 24 May 2013 06:46:31 GMT 2013-05-24T06:46:31Z http://www.dspace.cam.ac.uk:80/handle/1810/219520 Title: Digital compression and coding of continuous-tone still images Authors: Anon. Abstract: This CCITT Recommendation | ISO/IEC International Standard was prepared by CCITT Study Group VIII and the Joint Photographic Experts Group (JPEG) of ISO/IEC JTC 1/SC 29/WG 10. This Experts Group was formed in 1986 to establish a standard for the sequential progressive encoding of continuous tone grayscale and colour images. Digital Compression and Coding of Continuous-tone Still images, is published in two parts: Requirements and guidelines; Compliance testing. This part, Part 1, sets out requirements and implementation guidelines for continuous-tone still image encoding and decoding processes, and for the coded representation of compressed image data for interchange between applications. These processes and representations are intended to be generic, that is, to be applicable to a broad range of applications for colour and grayscale still images within communications and computer systems. Part 2, sets out tests for determining whether implementations comply with the requirments for the various encoding and decoding processes specified in Part 1. Thu, 01 Jan 2009 00:00:00 GMT http://www.dspace.cam.ac.uk:80/handle/1810/219520 2009-01-01T00:00:00Z http://www.dspace.cam.ac.uk:80/handle/1810/52544 Title: WWWMM supporting software Authors: Downing, Jim Abstract: These scripts were used to correlate input from the World Wide Web Molecular Matrix, extract metadata from CML and to assemble the files into packages ready for import into DSpace 1.2 Mon, 22 Aug 2005 16:19:24 GMT http://www.dspace.cam.ac.uk:80/handle/1810/52544 2005-08-22T16:19:24Z http://www.dspace.cam.ac.uk:80/handle/1810/14718 Title: PostgreSQL open source relational database software source code Abstract: Version 7.4.6 of the PostgreSQL relational database, in sourcecode format. This is part of the software running this archive (the database stores the metadata of DSpace items and provides some elements/logic to support the DSpace web front-end interface). Description: Most of the software in this archive is written in the C++ programming language, although the bundle also includes source code in other languages. For example, it includes the Java library which contemporary implementations of DSpace use to communicate with the database. Fri, 14 Jan 2005 15:09:53 GMT http://www.dspace.cam.ac.uk:80/handle/1810/14718 2005-01-14T15:09:53Z http://www.dspace.cam.ac.uk:80/handle/1810/14717 Title: DSpace source code Abstract: Version 1.2 of the DSpace Java sourcecode. This is part of the software running this archive. Fri, 14 Jan 2005 15:02:36 GMT http://www.dspace.cam.ac.uk:80/handle/1810/14717 2005-01-14T15:02:36Z http://www.dspace.cam.ac.uk:80/handle/1810/3487 Title: tar (Tape ARchive) file format Abstract: The tar program provides the ability to create tar archives, as well as various other kinds of manipulation. For example, you can use tar on previously created archives to extract files, to store additional files, or to update or list files which were already stored. Initially, tar archives were used to store files conveniently on magnetic tape. The name `tar' comes from this use; it stands for tape archiver. Despite the utility's name, tar can direct its output to available devices, files, or other programs (using pipes). tar may even access remote devices or files (as archives). Description: Software and documentation to create, extract and manipulate TAR files. Wed, 01 Dec 2004 11:58:51 GMT http://www.dspace.cam.ac.uk:80/handle/1810/3487 2004-12-01T11:58:51Z http://www.dspace.cam.ac.uk:80/handle/1810/3486 Title: zlib compression library Authors: Gailly, Jean-loup; Adler, Mark Abstract: zlib 1.2.1 is a general purpose data compression library written in the C programming language. All the code is thread safe. The data format used by the zlib library is described by RFCs (Request for Comments) 1950 to 1952 in the files http://www.ietf.org/rfc/rfc1950.txt (zlib format), rfc1951.txt (deflate format) and rfc1952.txt (gzip format). These documents are also available in the DSpace@Cambridge "DSpace" community, in the "RFCs" collection. All functions of the compression library are documented in the file zlib.h (volunteer to write man pages welcome, contact zlib@gzip.org). A usage example of the library is given in the file example.c which also tests that the library is working correctly. Another example is given in the file minigzip.c. The compression library itself is composed of all source files except example.c and minigzip.c. Description: (taken from http://www.gzip.org/ on 2004-12-01) zlib is designed to be a free, general-purpose, legally unencumbered -- that is, not covered by any patents -- lossless data-compression library for use on virtually any computer hardware and operating system. The zlib data format is itself portable across platforms. Unlike the LZW compression method used in Unix compress(1) and in the GIF image format, the compression method currently used in zlib essentially never expands the data. (LZW can double or triple the file size in extreme cases.) zlib's memory footprint is also independent of the input data and can be reduced, if necessary, at some cost in compression. A more precise, technical discussion of both points is available on another page. zlib was written by Jean-loup Gailly (compression) and Mark Adler (decompression). Jean-loup is also the primary author/maintainer of gzip(1), the author of the comp.compression FAQ list and the former maintainer of Info-ZIP's Zip; Mark is also the author of gzip's and UnZip's main decompression routines and was the original author of Zip. Not surprisingly, the compression algorithm used in zlib is essentially the same as that in gzip and Zip, namely, the `deflate' method that originated in PKWARE's PKZIP 2.x. Greg, Mark and/or Jean-loup will add some more stuff here when they think of something to add. For now this page is mainly a pointer to zlib itself and to the official zlib and deflate documentation. Note that the specifications both achieved official Internet RFC status in May 1996, and zlib itself was adopted by JavaSoft in version 1.1 of the Java Development Kit (JDK), both as a raw class and as a component of the JAR archive format. See also: http://java.sun.com/j2se/1.4.2/docs/api/java/util/zip/package-summary.html Wed, 01 Dec 2004 11:32:52 GMT http://www.dspace.cam.ac.uk:80/handle/1810/3486 2004-12-01T11:32:52Z http://www.dspace.cam.ac.uk:80/handle/1810/55 Title: The Independent JPEG Group's JPEG software Authors: Independent JPEG Group Abstract: This distribution contains the sixth public release of the Independent JPEG Group's free JPEG software. You are welcome to redistribute this software and to use it for any purpose, subject to the onditions identified in the README inside this tarfile. Tue, 30 Mar 2004 15:01:55 GMT http://www.dspace.cam.ac.uk:80/handle/1810/55 2004-03-30T15:01:55Z http://www.dspace.cam.ac.uk:80/handle/1810/54 Title: JPEG File Interchange Format Authors: Hamilton, Eric Abstract: Standards document describing the JPEG File Interchange Format. Tue, 30 Mar 2004 14:55:33 GMT http://www.dspace.cam.ac.uk:80/handle/1810/54 2004-03-30T14:55:33Z