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JPEG specification ITU CCITT T.81

In 186 pages the compressor"s specification

(by ccitt itu)

The full specification for JPEG compression algorithm.

The official reference site is: http://www.jpeg.org/
This article is online from 2923 days and has been seen 6638 times




JPEG Recommendation

Page
Introduction iii
1 Scope  1
2 Normative references 1
3 Definitions, abbreviations and symbols  1
4 General  12
5 Interchange format requirements  23
6 Encoder requirements  23
7 Decoder requirements  23
Annex A  Mathematical definitions 24
Annex B  Compressed data formats 31
Annex C  Huffman table specification 50
Annex D  Arithmetic coding  54
Annex E  Encoder and decoder control procedures 77
Annex F  Sequential DCT-based mode of operation 87
Annex G  Progressive DCT-based mode of operation 119
Annex H  Lossless mode of operation  132
Annex J  Hierarchical mode of operation 137
Annex K  Examples and guidelines 143
Annex L  Patents 179
Annex M  Bibliography 181

Introduction
This CCITT Recommendation | ISO/IEC International Standard was prepared by CCI
TT Study Group VIII and the Joint
Photographic Experts Group (JPEG) of ISO/IEC JTC 1/SC 29/WG 10. This Experts G
roup was formed in 1986 to
establish a standard for the sequential progressive encoding of continuous ton
e grayscale and colour images.
Digital Compression and Coding of Continuous-tone Still images, is published i
n two parts:

 Requirements and guidelines;
 Compliance testing.

This part, Part 1, sets out requirements and implementation guidelines for con
tinuous-tone still image encoding and
decoding processes, and for the coded representation of compressed image data 
for interchange between applications.



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