Progressive coding in JPEG2000 - improving content recognition performance using ROIs and importance maps

Author

Nguyen, Anthony ; Chandran, Vinod ; Sridharan, Sridha ; Prandolini, Robert

Author_Institution

Res. Concentration in Speech, Audio & Video Technol., Queensland Univ. of Technol., Brisbane, QLD, Australia

fYear

2002

fDate

3-6 Sept. 2002

Firstpage

1

Lastpage

4

Abstract

This paper presents a system, which permits arbitrary regions of importance and corresponding degrees of importance to be assigned in an image within the JPEG2000 image coder. The image can be reconstructed progressively in layers prioritised by importance values rather than the objective criterion of overall PSNR optimisation. Importance progressive coding is very desirable in surveillance applications. The system, IMP-J2K, aims to improve the interpretability or content recognition performance of compressed images, by selecting and distributing the bit allocation to contents of importance in an image and embedding these earlier in the code-stream. IMP-J2K makes use of JPEG2000´s data packing sub-system, which can selectively encode data in layers.

Keywords

content management; data compression; image coding; optimisation; IMP-J2K; JPEG2000 data packing subsystem; JPEG2000 image coder; PSNR optimisation; ROI; bit allocation; code stream; content recognition performance; content recognition performance improvement; image compression; importance MAP; importance progressive coding; progressive image reconstruction; surveillance applications; Abstracts; Image coding; Image recognition; Streaming media; Surveillance; Transforms; Visualization;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Conference, 2002 11th European

Conference_Location

Toulouse

ISSN

2219-5491

Type

conf

Filename

7072253