Title :
New results on rate control in JPEG2000
Author :
Tai, Heng-Ming ; Long, Men ; Yang, Su
Author_Institution :
Dept. of Electr. Eng., Tulsa Univ., OK, USA
Abstract :
Rate control plays an important role in JPEG2000, in which the nonorthogonal wavelet transforms require the mean squared error (MSE) in each subband to be appropriately scaled. modified weight metric is investigated that provides better compression performance than the one specified in the JPEG2000 standard. The experiment is carried out in the JPEG2000 framework. Similar consideration may be applied to real wavelet transforms for lossy image compression.
Keywords :
data compression; image coding; wavelet transforms; JPEG2000 standard; compression performance; lossy image compression; mean squared error; modified weight metric; nonorthogonal wavelet transforms; rate control; Bit rate; Filters; Image coding; Image reconstruction; Performance loss; Quantization; Rate-distortion; Streaming media; Transform coding; Wavelet transforms;
Conference_Titel :
Automation Congress, 2002 Proceedings of the 5th Biannual World
Print_ISBN :
1-889335-18-5
DOI :
10.1109/WAC.2002.1049568
