In image fusion literature, transform domain fusion is one of the popular techniques for efficient image fusion. Although transform domain techniques are computationally heavy, it has been evident through rigorous experimentation that in most of the cases, they are superior to spatial domain methods. Medical images contain very minute edges that have poorer resolution in spatial domain. If such...

The present work solves two-dimensional Advection-Dispersion Equation (ADE) in a semi-infinite domain. A variable source concentration is regarded as the monotonic decreasing function at the source boundary (x=0). Depth-dependent variables are considered to incorporate real life situations in this modeling study, with zero flux condition assumed to occur at the exit boundary of the domain, i.e....

The extensive use of discrete transforms such as the Discrete Cosine Transform in image and video coding suggests the investigation on ltering before down sampling (FBDS) and ltering after up sampling (FAUS) methods directly acting on the transform domain [1, 2]. On the other hand, Transform Domain Filtering (TDF) was recently introduced as an important tool for implementing linear ltering and ...

Many studies have performed transcoding of compressed video streams in the discrete cosine transform (DCT) domain to reduce computation complexity. Most video compression standards recommend motion compensation in the spatial domain. On the other hand, compressed data that is motion-compensated in the spatial domain should be motion-compensated in the transform domain for the transform-domain t...

Standard fractal image compression techniques rely on using an IFS operator directly on the image function. However, sometimes it is more convenient to work on some transformed version of the image. For example, an MRI image is scanned in as frequency data. Thus, it is more natural to work on the Fourier Transform of the image rather than on the image itself. Furthermore, if your image quality ...

In this paper, a new mathematical model of a Kelvin-Voigt type thermo-visco-elastic, infinite thermally conducting medium has been considered in the context of a new consideration of heat conduction having a non-local fractional order due to the presence of periodically varying heat sources. Three-phase-lag thermoelastic model, Green Naghdi models II and III (i.e., the models which predicts the...

This paper presents an efficient transform-domain architecture and corresponding mode decision algorithms for transcoding intra-coded video fromMPEG-2 to H.264/AVC. Low complexity is achieved in several ways. First, our architecture employs direct conversion of the transform coefficients, which eliminates the need for the inverse discrete cosine transform (DCT) and forward H.264/AVC transform. ...

The present work solves two-dimensional Advection-Dispersion Equation (ADE) in a semi-infinite domain. A variable source concentration is regarded as the monotonic decreasing function at the source boundary (x=0). Depth-dependent variables are considered to incorporate real life situations in this modeling study, with zero flux condition assumed to occur at the exit boundary of the domain, i.e....

Linear canonical transform is an integral transform with four parameters and has been proved to be powerful tool for optics, radar system analysis, filter design etc. Fractional Fourier transform and Fresnel transform can be seen as a special case of linear canonical transform with real parameters. Further generalization of linear canonical transform with complex parameters is also developed an...

Image and video indexing techniques are crucial in multimedia applications. A number of the indexing techniques that operate in the pixel domain have been reported in the literature. The advent of compression standards has led to the proliferation of indexing techniques in the compressed domain. In this paper, we present a critical review of the compressed domain indexing techniques proposed in...