This paper presents image super-resolution scheme based on subpixel image registration by the design of a specific class of dyadicinteger-coefficient based wavelet filters derived from the construction of a half-band polynomial. First, the integer-coefficient based halfband polynomial is designed by the splitting approach. Next, this designed half-band polynomial is factorized and assigned spec...

Wavelet transformation is one of the most practical mathematical transformations in the field of image processing, especially image and signal processing. Depending on the nature of the multiresolution analysis, Wavelet transformation become more accessible and powerful tools. In this paper, we refer to the mathematical foundations of this transformation.   Introduction: The...

This paper introduces the double-density dual-tree DWT, a discrete wavelet transform that combines the double-density DWT and the dual-tree DWT, each of which has its own characteristics and advantages. The transform corresponds to a new family of dyadic wavelet tight frames based on two scaling functions and four distinct wavelets, ψh,i(t) and ψg,i(t), i = 1, 2. The two wavelets ψh,1(t) and ψh...

In this paper, an efficient error resilience scheme aiming to give priority protection to certain area such as region of interest (ROI) in frame based on Wyner-Ziv(WZ) coding for wavelet based video transmission is proposed. By utilizing additional WZ coding, all the corresponding wavelet coefficients related to ROI will be specially protected during transmission on error prone channel and even...

A novel distortionless image data hiding method named lossless image digital watermarking based on integer wavelet and histogram adjustment is proposed. This image data hiding method can invert the stego-image into the original image without any distortion after the hidden data are extracted. The image histogram adjustment is used to prevent grayscales from possible overflowing. This method hid...

--In this paper, we present region-based coding of medical images using integer wavelet transforms and the modified SPMT algorithm. Our method differs from previously reported region-ofinterest (ROI) coders in such a way that the regionbased integer wavelet transform is used to obtain the representation of the partitioned image plane rather than differentiating the coefficients associated with ...

Recently, research on two distinct types of wavelet frames have emerged, each with its own characteristics. The dual-tree discrete wavelet transform (DWT) [1] is based on the concatenation of two wavelet bases, where the two wavelets are designed to form a Hilbert transform pair, Ãg(t) = HfÃh(t)g [4]. A second type of wavelet frame is based on a single scaling function and two distinct wavelets...

A number of reversible integer-to-integer wavelet transforms are compared on the basis of their lossy compression performance, lossless compression performance, and computational complexity. Of the transforms considered, several were found to perform particularly well, with the best choice for a given application depending on the relative importance of lossless compression performance, lossy co...