Title :
A study on non-octave resolution conversion based on JPEG2000 extensions
Author :
Nakachi, Takayuki ; Sawabe, Tomoko ; Suzuki, Junji ; Fujii, Tetsuro
Abstract :
The features of JPEG2000, an international standard for still image compression, include (1) high coding performance, (2) unified lossless/lossy compression, (3) resolution and SNR scalability. Resolution scalability is an especially promising feature given the popularity of super high definition (SHD) images like digital-cinema. Unfortunately, its current implementation of resolution scalability is restricted to powers of two. We introduce a non-octave resolution conversion method that is compatible with JPEG2000 part2. By using the proposed algorithm, images of various resolutions can be decoded from a compressed JPEG2000 part2 code stream. Experimental results from digital-cinema test sequences show the effectiveness of the proposed algorithm.
Keywords :
data compression; decoding; image coding; image resolution; image sequences; JPEG2000 part2; SNR scalability; digital cinema test sequences; image resolution; nonoctave resolution conversion; resolution scalability; still image compression; super high definition images; Decoding; Discrete wavelet transforms; Filter bank; Image coding; Image converters; Image resolution; Performance loss; Scalability; Streaming media; Transform coding;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2004. Proceedings. (ICASSP '04). IEEE International Conference on
Print_ISBN :
0-7803-8484-9
DOI :
10.1109/ICASSP.2004.1326483
