Title :
Efficient implementation of a set of lifting based wavelet filters
Author :
Andra, Kishore ; Chakrabarti, Chaitali ; Acharya, Tinku
Author_Institution :
Arizona State Univ., Tempe, AZ, USA
Abstract :
Lifting based wavelet transform implementation not only helps in reducing the number of computations but also achieves lossy to lossless performance with finite precision. We first do a precision analysis for the set of seven filters proposed by the JPEG2000 verification model. We determine the precision required to implement the filters using fixed point 2´s complement arithmetic for lossless as well as lossy coding. Next we propose a unified architecture for implementing this set of filters for both the forward and the inverse transform
Keywords :
data compression; digital filters; discrete wavelet transforms; fixed point arithmetic; image coding; inverse problems; transform coding; JPEG2000 verification model; Mentor Graphics VHDL compiler; Model Sim simulator; behavioral VHDL; discrete wavelet transform; fixed point 2´s complement arithmetic; floating point implementation; forward transform; image compression; inverse transform; lifting based wavelet filters; lifting based wavelet transform; lossless coding; lossy coding; precision analysis; wavelet based image codecs; Band pass filters; Discrete transforms; Discrete wavelet transforms; Fixed-point arithmetic; Image coding; Low pass filters; Matrix converters; Performance loss; Symmetric matrices; Wavelet transforms;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2001. Proceedings. (ICASSP '01). 2001 IEEE International Conference on
Conference_Location :
Salt Lake City, UT
Print_ISBN :
0-7803-7041-4
DOI :
10.1109/ICASSP.2001.941112
