The richness of natural images makes the quest for optimal representations in image
processing and computer vision challenging. The latter observation has not prevented the …

The furry regions of ultrasound images are to be enhanced for good quality visual
perception. This paper proposes a contourlet transform (CT) based sharpening technique …

It is widely recognized that the performance of many image processing algorithms can be
significantly improved by applying multiscale image representations with the ability to …

This paper proposes an efficient approach for adaptive directional wavelet transform (WT)
based on directional prefiltering. Although the adaptive directional WT is able to transform …

In Computed Tomography (CT) imaging, selection of reconstruction kernels determines the
tradeoff between image sharpness and pixel noise. This paper presents a new High Pass …

In this paper we consider the problem of finding the direction of the content in a given image
segment to foster the development of adaptive directional decompositions of images. We …

In the present paper, we propose new image coding methods based on max-plus algebra-
based wavelet transforms (MP-Wavelets). Max-plus algebra is an algebraic structure on the …

The main challenge in image denoising is, how to preserve the information such as edges
and textures to get satisfactory visual quality when improving the signal to noise ratio. In this …

Directional filter banks (DFBs) are highly desired in directional representation of images. In
this correspondence, we propose a 2-D nonsubsampled nonuniform directional filter bank …

Image retrieval is one of the most applicable image processing techniques, which have
been used extensively. Feature extraction is one of the most important procedures used for …