Sonam Singh

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Proper choice of denoising filter is a very important requirement for efficient image restoration because most of the filters only reduce the effect of the noise rather than removing it. This paper gives a comparative evaluation of different de-speckling algorithms through the quantitative analysis of uteral ultrasound images. The performance of seven(More)
Automatic segmentation of retinal blood vessels from fundus images plays an important role in the computer aided diagnosis of retinal diseases. The task of blood vessel segmentation is challenging due to the extreme variations in morphology of the vessels against noisy background. In this paper, we formulate the segmentation task as a multi-label inference(More)
This paper analyzes the performance of sum of squared differences (SSD), sum of absolute differences (SAD), normalized cross correlation (NCC), zero mean normalized cross correlation (ZNCC) and several other proposed modified expressions of NCC. Experimental results on real images demonstrate that some of the proposed modified expressions of NCC are more(More)
In the present study, a numerical analysis is carried out to investigate unsteady MHD (magneto-hydrodynamic) flow and heat transfer of a non-Newtonian second grade viscoelastic fluid over an oscillatory stretching sheet. The flow is induced due to an infinite elastic sheet which is stretched oscillatory (back and forth) in its own plane. Effect of viscous(More)
This paper demonstrates the power of one of the recent but strong computing method for solving ordinary partial differential equations (ODE) & partial differential equations (PDE). Many mathematical models are governed by differential equations and hence due to large data involved, the only possible solution is numerical solution. The basic features of(More)
This paper presents a numerical study of natural convection within a wavy enclosure heated via corner heating. The considered enclosure is a square enclosure with left wavy side wall. The vertical wavy wall of the enclosure and both of the corner heaters are maintained at constant temperature, T c and T h , respectively, with T h > T c while the remaining(More)
Basic leucine zipper (bZIP) transcription factors comprise one of the largest gene families in plants. They play a key role in almost every aspect of plant growth and development and also in biotic and abiotic stress tolerance. In this study, we report isolation and characterization of EcbZIP17, a group B bZIP transcription factor from a climate smart(More)
This paper presents a review of the available technology, as well as general background research on standalone micro-hydro power plant or wind energy conversion system. In this paper efforts has been done to present a control structure which is dealing with both voltage and frequency regulation of an isolated induction generator. It evaluates different(More)