Title :
Visually lossless JPEG2000 at fractional resolutions
Author :
Han Oh ; Bilgin, Ali ; Marcellin, Michael W.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Arizona, Tucson, AZ, USA
Abstract :
JPEG2000 images with K wavelet decomposition levels inherently support K + 1 spatial resolutions. Other resolutions can be obtained through resampling adjacent native resolution images. In this paper, we propose a method of encoding images that can be decoded at arbitrary resolutions in a visually lossless manner with minimum bitrates. To achieve this, visibility thresholds for resampled quantization distortions are studied, and a technique of applying thresholds that vary with the display resolution is introduced.
Keywords :
image coding; image sampling; JPEG2000; image encoding; image resampling; wavelet decomposition; Bit rate; Image coding; Image reconstruction; Quantization; Spatial resolution; Transform coding; JPEG2000; JPIP; Visually lossless coding; scalability; visibility threshold;
Conference_Titel :
Image Processing (ICIP), 2011 18th IEEE International Conference on
Conference_Location :
Brussels
Print_ISBN :
978-1-4577-1304-0
Electronic_ISBN :
1522-4880
DOI :
10.1109/ICIP.2011.6116321
