Technology
INTERNATIONAL TELECOMMUNICATION UNION
CCITT
THE INTERNATIONAL
TELEGRAPH AND TELEPHONE
CONSULTATIVE COMMITTEE
TERMINAL EQUIPMENT AND PROTOCOLS
FOR TELEMATIC SERVICES
INFORMATION TECHNOLOGY –
DIGITAL COMPRESSION AND CODING
OF CONTINUOUS-TONE STILL IMAGES –
REQUIREMENTS AND GUIDELINES
Recommendation T.81
T.81
(09/92)
Foreword
ITU (International Telecommunication Union) is the United Nations Specialized Agency in the field of telecommunications. The CCITT (the International Telegraph and Telephone Consultative Committee) is a permanent organ of the ITU. Some 166 member countries, 68 telecom operating entities, 163 scientific and industrial organizations and 39 international organizations participate in CCITT which is the body which sets world telecommunications standards (Recommendations).
The approval of Recommendations by the members of CCITT is covered by the procedure laid down in CCITT Resolution
No. 2 (Melbourne, 1988). In addition, the Plenary Assembly of CCITT, which meets every four years, approves
Recommendations submitted to it and establishes the study programme for the following period.
In some areas of information technology, which fall within CCITT’s purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. The text of CCITT Recommendation T.81 was approved on 18th September 1992.
The identical text is also published as ISO/IEC International Standard 10918-1.
___________________
CCITT NOTE
In this Recommendation, the expression “Administration” is used for conciseness to indicate both a telecommunication administration and a recognized private operating agency.
ITU 1993
All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the ITU.
Contents
Page
CCITT
THE INTERNATIONAL
TELEGRAPH AND TELEPHONE
CONSULTATIVE COMMITTEE
TERMINAL EQUIPMENT AND PROTOCOLS
FOR TELEMATIC SERVICES
INFORMATION TECHNOLOGY –
DIGITAL COMPRESSION AND CODING
OF CONTINUOUS-TONE STILL IMAGES –
REQUIREMENTS AND GUIDELINES
Recommendation T.81
T.81
(09/92)
Foreword
ITU (International Telecommunication Union) is the United Nations Specialized Agency in the field of telecommunications. The CCITT (the International Telegraph and Telephone Consultative Committee) is a permanent organ of the ITU. Some 166 member countries, 68 telecom operating entities, 163 scientific and industrial organizations and 39 international organizations participate in CCITT which is the body which sets world telecommunications standards (Recommendations).
The approval of Recommendations by the members of CCITT is covered by the procedure laid down in CCITT Resolution
No. 2 (Melbourne, 1988). In addition, the Plenary Assembly of CCITT, which meets every four years, approves
Recommendations submitted to it and establishes the study programme for the following period.
In some areas of information technology, which fall within CCITT’s purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. The text of CCITT Recommendation T.81 was approved on 18th September 1992.
The identical text is also published as ISO/IEC International Standard 10918-1.
___________________
CCITT NOTE
In this Recommendation, the expression “Administration” is used for conciseness to indicate both a telecommunication administration and a recognized private operating agency.
ITU 1993
All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the ITU.
Contents
Page
Bibliography: Vol. 30, No. 7, pp. 947-954, 1991. WALLACE (G.K.): The JPEG Still Picture Compression Standard, Communications of the ACM, Vol. 34, No. 4, pp. 3144, 1991. FEIG (E.): A Fast Scaled DCT Algorithm, in Image Processing Algorithms and Techniques, Proc. SPIE, Vol. 1244, K.S. Pennington and R. J. Moorhead II, Editors, pp. 2-13, Santa Clara, California, 1990. IEEE ICASSP-91, pp. 2201-2204, Toronto, Canada, 1991. VETTERLI (M.) and NUSSBAUMER (H.J.): Simple FFT and DCT Algorithms with Reduced Number of Operations, Signal Processing, 1984. CCITT Rec. T.81 (1992 E) 181 CHEN (W.H.) and PRATT (W.K.): Scene adaptive coder, IEEE Trans. on Communications, Vol. COM-32, pp. 225-232, 1984. LOHSCHELLER (H.): Vision adapted progressive image transmission, Proceedings of EUSIPCO, Vol. 83, pp. 191-194, 1983. PETERSON (H.A.) et al: Quantization of colour image components in the DCT domain, SPIE/IS&T 1991 Symposium on Electronic Imaging Science and Technology, 1991. LANGDON (G.): An Introduction to Arithmetic Coding, IBM J. Res. Develop., Vol. 28, pp. 135-149, 1984. ONO (F.), YOSHIDA (M.), KIMURA (T.) and KINO (S.): Subtraction-type Arithmetic Coding with Conditional Exchange, Annual Spring Conference of IECED, Japan, D-288, 1990.