03/07/2012, 16:30 — 17:30 — Room P3.10, Mathematics Building
Raymond Chan, The Chinese University of Hong Kong
Tight-frame Approach for Image Processing
In many practical problems in image processing, the observed data sets are often incomplete in the sense that features of interest in the image are missing partially or corrupted by noise. The recovery of missing data from incomplete data is an essential part of any image processing procedures whether the final image is utilized for visual interpretation or for automatic analysis. In this talk, we present our tight-frame algorithm for missing data recovery. Tight-frames are extension of wavelets. They generalize orthonormal wavelet systems and give more flexibility in filter designs. We begin our talk with an introduction of tight-frames. Then we illustrate how to apply the idea to different image processing applications such as inpainting, impulse noise removal, super-resolution image reconstruction and video enhancement.
Joint work with X. M. Yuan (Hong Kong Baptist University) and J. F. Yang and M. Tao (Nanking University).