Multiple arbitrary shape ROI coding with zerotree based wavelet coders

Author

Cuhadar, Aysegul ; Tasdoken, Sinan

Author_Institution

Dept. of Syst. & Comput. Eng., Carleton Univ., Ottawa, Ont., Canada

Volume

3

fYear

2003

fDate

6-9 July 2003

Abstract

Region-base video coding schemes employed in MPEG-4 is also promising for still image coding applications where images contain a number of objects that can be encoded at different bit rates, such as compression of medical images for archiving and transmission. Motivated by this fact, in this paper, we investigate multi-region and multi-quality (MRMQ) coding based on zerotree wavelet coders. We present a novel scheme, which addresses the region size sensitivity problem in region-based coding. The proposed method outperforms the region of interest (ROI) coding unit of JPEG-2000, i.e., it is possible to save 0.3 bits per pixel to attain the same ROI/background rate-distortion performance with the proposed MRMQ coding scheme.

Keywords

rate distortion theory; tree data structures; video coding; wavelet transforms; JPEG-2000; MPEG-4; background rate-distortion performance; interest region coding unit; multiquality coding; multiregion coding; region size sensitivity problem; still image coding; video coding schemes; zerotree wavelet coders; Biomedical imaging; Bit rate; Discrete cosine transforms; Discrete wavelet transforms; Encoding; Image coding; Image reconstruction; MPEG 4 Standard; Rate-distortion; Shape;

fLanguage

English

Publisher

ieee

Conference_Titel

Multimedia and Expo, 2003. ICME '03. Proceedings. 2003 International Conference on

Print_ISBN

0-7803-7965-9

Type

conf

DOI

10.1109/ICME.2003.1221272

Filename

1221272