Title :
Integer-to-integer shape adaptive wavelet transform for region of interest image coding
Author :
Abu-Hajar, Ahmed ; Sankar, Ravi
Author_Institution :
South Florida Univ., Tampa, FL, USA
Abstract :
In this paper, we are proposing an integer-to-integer shape adaptive discrete wavelet transform (ISA-DWT) for the region of interest (ROI) coding. ISA-DWT is capable of coding any number of arbitrary shape regions using an integer-to-integer wavelet transform using the lifting scheme. ISA-DWT maintains similar spatial correlation to the actual wavelet transform that allows SPIHT coding. Also, the number of the coefficients in the transform domain using ISA-DWT is equal to the number of pixels contained in the region. The results show that the 5/3 transform has more lossless compression in bit per pixel than other filters.
Keywords :
adaptive codes; image coding; transform coding; wavelet transforms; filters; image compression; integer-to-integer shape adaptive wavelet transform; lifting scheme; region of interest image coding; spatial correlation; Channel bank filters; Discrete wavelet transforms; Filter bank; Floating-point arithmetic; Frequency; Image coding; Pixel; Shape; Signal synthesis; Wavelet transforms;
Conference_Titel :
Digital Signal Processing Workshop, 2002 and the 2nd Signal Processing Education Workshop. Proceedings of 2002 IEEE 10th
Print_ISBN :
0-7803-8116-5
DOI :
10.1109/DSPWS.2002.1231083
