Discrete sine transform

About: Discrete sine transform is a research topic. Over the lifetime, 3269 publications have been published within this topic receiving 73181 citations.

Real signals fast Fourier transform: Storage capacity and step number reduction by means of an odd discrete Fourier transform

Abstract: An odd discrete Fourier transform (ODFT) which relates in several ways to the usual discrete Fourier transform (DFT) is introduced and discussed. Its main advantage is that it can readily be applied to spectrum and correlation computations on real signals, by halving the storage capacity and greatly reducing the number of necessary steps.

A new contrast measure based image enhancement algorithm in the DCT domain

Abstract: In this paper a new algorithm is presented for image enhancement in the discrete cosine transform (DCT) domain. The algorithm is based on a novel contrast measure that is defined for each DCT coefficient. This algorithm can be applied to the enhancement of images compressed with JPEG and it is especially useful when it is applied to enhance the direction contrast of the images. Experimental results show the effectiveness of the proposed algorithm.

The (q,h)-Laplace transform on discrete time scales

Abstract: In this paper, we develop a (q,h)-Laplace transform on specific time scales. We show that the transform is reduced for h=0 to the q-Laplace transform, reduce for q=1 to the h-Laplace transform and reduced for q=h=1 to the Z-transform. Finally, we employ the (q,h)-Laplace transform to produce some key results.