On the architectural support for fast wavelet transform Conference Paper

abstract

• Wavelet transform is being used for many real-time signal and image processing applications. Many applications can tolerate certain level of compromise in accuracy for a faster speed. In this paper we propose a wavelet processor architecture to support approximated calculation of the wavelet transform.Our design uses the fixed point number system to simplify the hardware design and the computation procedures. By using a table look-up technique, one can predict the range of an output coefficient, so that the computation of coefficients need not be completed. This technique can be efficiently implemented in the wavelet processor for in-line thresholding. By adjusting the thresholding level, one can achieve different levels of computational accuracy and speed. Our simulation results on processing of speech and musical data show that this thresholding technique is quite effective and flexible.

name of conference

• Wavelet Applications IV

authors

• Liu, Jyh

published proceedings

• WAVELET APPLICATIONS IV

author list (cited authors)

• Chang, C. C., Liu, J. C., & Chan, A. K.

citation count

• 1

complete list of authors

• Chang, CC||Liu, JC||Chan, AK

editor list (cited editors)

• Szu, H. H.

publication date

• January 1997

publisher

• SPIE, the international society for optics and photonics  Publisher

published in

• Proceedings of SPIE  Journal

keywords

• Digital Filtering
• Fast Approximation
• Fixed Point Numbers
• Wavelet Transform

Digital Object Identifier (DOI)

• 10.1117/12.271763

International Standard Book Number (ISBN) 10

• 0-8194-2493-5

start page

• 700

end page

• 707

volume

• 3078

URL

• http%3A%2F%2Fdx.doi.org%2F10.1117%2F12.271763