Analysis/synthesis imaging coding system based on time domain aliasing cancellation

Author

Reynolds, Douglas A. ; Smith, Mark J T

Author_Institution

Sch. of Electr. Eng., Georgia Inst. of Technol., Atlanta, GA, USA

fYear

1989

fDate

9-12 Apr 1989

Firstpage

866

Abstract

A novel image analysis/synthesis system based on time-domain aliasing cancellation (TDAC) is presented. It is described under a block transform interpretation and has the unique feature of allowing overlapping analysis windows without incurring data expansion. The system is first derived as a separable application of a 1-D TDAC system to an images´s rows and columns and is further shown to have a more general derivation in terms of purely 2-D operations. The application of the 2-D TDAC system to transform coding of images is presented, and the results from using different amounts of window overlap are discussed and compared to the performance of a DCT (discrete cosine transform)-based transform coder. The results showed improvement over the DCT coder in removing block edge artifacts and in general produced a more subjectively pleasing image

Keywords

encoding; picture processing; transforms; block edge artifacts removal; block transform interpretation; encoding; image analysis/synthesis system; imaging coding system; overlapping analysis windows; picture processing; time domain aliasing cancellation; transform coding; window overlap; Bit rate; Degradation; Discrete cosine transforms; Discrete transforms; Image analysis; Image coding; Image reconstruction; Shape; Time domain analysis; Transform coding;

fLanguage

English

Publisher

ieee

Conference_Titel

Southeastcon '89. Proceedings. Energy and Information Technologies in the Southeast., IEEE

Conference_Location

Columbia, SC

Type

conf

DOI

10.1109/SECON.1989.132522

Filename

132522