Title :
Design and analysis of efficient reconfigurable wavelet filters
Author :
Pande, Amit ; Zambreno, Joseph
Author_Institution :
Dept. of Electr. & Comput. Eng., Iowa State Univ., Ames, IA
Abstract :
Real-time image and multimedia processing applications such as video surveillance and telemedicine can have dynamic requirements of system latency, throughput, and power consumption. In this paper we discuss the design of reconfigurable wavelet filters for image processing applications that can meet such dynamic requirements. We generate several efficient hardware designs based on a derived family of bi-orthogonal 9/7 filters. An efficient folded and multiplier-free implementation of a 9/7 filter is obtained with the help of nine adders, which is a significant improvement over other existing approaches. We also propose an architecture that allows for on-the-fly switching between 9/7 and 5/3 filter structures. A performance comparison of these filters and their hardware requirements with other existing approaches demonstrates the suitability of our choice.
Keywords :
adders; discrete wavelet transforms; filtering theory; image processing; adders; biorthogonal filters; hardware designs; hardware requirements; multimedia processing applications; multiplier-free implementation; power consumption; real-time image processing; reconfigurable wavelet filters; Delay; Energy consumption; Filters; Hardware; Multimedia systems; Real time systems; Telemedicine; Throughput; Video surveillance; Wavelet analysis;
Conference_Titel :
Electro/Information Technology, 2008. EIT 2008. IEEE International Conference on
Conference_Location :
Ames, IA
Print_ISBN :
978-1-4244-2029-2
Electronic_ISBN :
978-1-4244-2030-8
DOI :
10.1109/EIT.2008.4554323