Motion video adaptive quantization in the transform domain

Author

Gonzales, C.A. ; Viscito, E.

Author_Institution

IBM Thomas J. Watson Res. Center, Yorktown Heights, NY, USA

Volume

1

Issue

4

fYear

1991

fDate

12/1/1991 12:00:00 AM

Firstpage

374

Lastpage

378

Abstract

The authors developed a minimax adaptive quantization algorithm that operates in the discrete cosine transform domain conforming to the Moving Picture Experts Group (MPEG) standard. The algorithm is designed to optimize image quality by adapting a quantizer scaling factor to the local characteristics of the video pictures while preserving a constraint on the average output bit rate. The algorithm is well suited for real-time encoder implementations of current video compression standards, such as MPEG and H.261

Keywords

data compression; encoding; picture processing; television standards; transforms; video signals; H.261; MPEG standard; Moving Picture Experts Group; average output bit rate; discrete cosine transform; image quality; local characteristics; minimax adaptive quantization algorithm; motion video adaptive quantisation; quantizer scaling factor; real-time encoder; transform domain; video compression standards; video pictures; Algorithm design and analysis; Constraint optimization; Discrete cosine transforms; Discrete transforms; MPEG standards; Minimax techniques; Quantization; Standards development; Transform coding; Video compression;

fLanguage

English

Journal_Title

Circuits and Systems for Video Technology, IEEE Transactions on

Publisher

ieee

ISSN

1051-8215

Type

jour

DOI

10.1109/76.120778

Filename

120778