Discrete Wavelet Transforms using Daubechies Wavelet

Abstract

The Wavelet co-efficients have to be calculated using sampled version of basis functions. As an attempt to compute the Wavelet co-efficients and to find the mother function co-efficients from discrete Wavelet Transform an 8 bit data vector has been used and also the input 8 bit data vector has been derived from only the 4 bit data which is the result of discrete Wavelet Transformation, i.e., from S1, S2, D1 and D2.

Indexing terms:

• Discrete wavelet transform
• Wavelet coefficients
• Basis functions

Additional information

Notes on contributors

I Umamaheswar Rao

I Umamaheshwar Rao was born on 6th July 1963 at Nalgonda, Andhra Pradesh. Passed diploma in electronics and communication engineering from Govt Polytechnic, Hyderabad, Andhra Pradesh in the year 1982, passed AMIETE in the year 1987 from IETE, New Delhi. ME (Electronics and Communication Engg) with specialization in microwave and radar engg from Osmania University, Hyderabad, Andhra Pradesh. He worked in Indian Institute of Technology (Mumbai) as Junior Technical Assistant for 3 years, then in National Mineral Development Corporation as Probationary Engineer (Electronics) at Kirandul, Madhya Pradesh. Worked in SHAR Centre, Sriharikota (ISRO) as Scientist/Engineer'SC' from September 1995 to May 1999. He is presently working in DRDO unit as Scientist-C. His areas of interest are Signal Processing, Microwaves and Radars.