Sachin P Nanavati has joined the Scientific and Engineering Computing Group of C-DAC, Pune. He enjoys trekking and bird watching.

Prasanta K Panigrahi is currently with the Quantum Information and Quantum Optics Division at PRL. His current research interests are in the areas of quantum information, solitons and wavelets.

Digital imaging has had an enormous impact on scientific and industrial applications. Uncompressed images require considerable storage capacity and transmission bandwidth. The solution to this problem is to compress an image for desired application. Wavelet transform has recently emerged as the tool of choice for image compression. In this article, we discuss the basic principles underlying compression of images and point out the advantages of wavelet transform over the previously used discrete cosine transform.

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Address for Correspondence
Sachin P Nanavati
National PARAM Supercomputing Facility,
Centre for Development of
Advanced Computing (C-DAC),
Pune University Campus, Ganesh Khind,
Pune 411 007, India.
e-mail: sachinn@cdacindia.com

Prasanta K Panigrahi
Physical Research Laboratory
Navrangpura
Ahmedabad 380 009, India..
Email: prasanta@prl.ernet.in
URL:www.prl.ernet.in/~prasanta