Abstract
Application of the two-dimensional (2-D) Wigner-Ville (WV) distribution (WVD) to image processing, or more particularly to texture segmentation raises new theoretical and practical problems. This paper tries to formulate the problems in a systematic manner and to develop a set of possible solutions to them. Within this framework, we put emphasis on the reduction of inherent artifacts eventually present in the WVDs of images by giving definite solutions to the problem of interference between positive and negative spatial frequencies, and by proposing, to cope with the problem of interference between the image's components, a systematic extension of the most commonly used 1-D (one-dimensional) smoothing techniques to 2-D WVD case. The interest of the proposed solutions is first illustrated with the aid of examples on local WV spectra, and then demonstrated by texture segmentation examples on both synthesized and natural images.
Published Version
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