Title :
An extension of ROI-based scalability for progressive transmission in JPEG2000 coding
Author :
Watanabe, Osamu ; Kiya, Hitoshi
Author_Institution :
Dept. of Electr. Eng., Tokyo Metropolitan Univ., Japan
Abstract :
In this paper, we propose a function that provides scalability of image quality on the basis of regions of interest for JPEG2000 coding. Functions of this type are useful in the progressive transmission of images, where the aim is to decode regions of interest more quickly than backgrounds. The conventional methods of progressive transmission have mainly been based on SNR scalability or on resolution scalability. With these conventional functions, it is impossible to achieve region-based scalability in the progressive transmission of images. The proposed methods use the ROI and SNR layer structures of JPEG2000, so the methods are suitable for the region-progressive transmission of JPEG2000 images.
Keywords :
image coding; multimedia communication; telecommunication standards; visual communication; JPEG2000 coding; ROI layer structures; ROI-based scalability extension; SNR layer structures; SNR scalability; backgrounds; image quality scalability; progressive image transmission; region-based scalability; region-progressive transmission; regions of interest; resolution scalability; Decoding; Discrete wavelet transforms; Displays; Encoding; Image coding; Image quality; Noise shaping; Scalability; Shape; Tiles;
Conference_Titel :
Circuits and Systems, 2002. APCCAS '02. 2002 Asia-Pacific Conference on
Print_ISBN :
0-7803-7690-0
DOI :
10.1109/APCCAS.2002.1115057
