GRA Based Network Selection in Heterogeneous Wireless Networks
- Rajiv Verma, N. Singh
- Computer Science, BusinessWireless personal communications
- 1 September 2013
A multi-criteria access network selection algorithm is proposed in Worldwide Interoperability for Microwave Access–Wireless Fidelity environment, in order to facilitate the provision of high quality services and at the same time to satisfy different types of user service level agreements.
Non local means algorithm with adaptive isotropic search window size for image denoising
- Rajiv Verma, R. Pandey
- Computer ScienceIEEE India Conference
- 1 December 2015
Experimental results on standard images show that the proposed algorithm outperforms the conventional NLM algorithm in terms of PSNR and visual quality and preserves the image details such as edges and texture in an image at higher noise level.
Characterization of local regions for wavelet-based image denoising using a statistical approach
- Rajiv Verma, R. Pandey
- EngineeringInt. J. Wavelets Multiresolution Inf. Process.
- 9 January 2020
The shape of local window plays a vital role in the estimation of original signal variance, which is used to shrink the noisy wavelet coefficients in wavelet-based image denoising algorithms. This ...
Adaptive selection of search region for NLM based image denoising
- Rajiv Verma, R. Pandey
- Computer Science
- 1 October 2017
Elastohydrodynamic analysis of couple stress lubricated cylindrical journal bearing
- Sanjeev Kumar Lambha, Vinod Kumar, Rajiv Verma
- EngineeringJournal of Physics: Conference Series
- 1 July 2019
The elastohydrodynamic analysis of plain cylindrical rotor bearing system lubricated with couple stress fluid is performed in this paper. The hydrodynamic pressure is generated entirely by the motion…
STABILITY ANALYSIS OF TWO LOBE HYDRODYNAMIC JOURNAL BEARING WITH COUPLE STRESS LUBRICANT
- N. Mehta, S. Rattan, Rajiv Verma
- Engineering, Physics
- 2010
A generalized Reynolds equation has been derived for carrying out the stability analysis of a two lobe hydrodynamic bearing operating with couple stress fluids that has been solved using the finite…
A statistical approach to adaptive search region selection for NLM-based image denoising algorithm
- Rajiv Verma, R. Pandey
- EngineeringMultimedia tools and applications
- 2016
The proposed algorithm adaptively selects an optimal size search region for a pixel based on maximization of ratio of contribution of similar pixels to dissimilar pixels for different search regions centered on that pixel.
Grey relational analysis based adaptive smoothing parameter for non-local means image denoising
- Rajiv Verma, R. Pandey
- EngineeringMultimedia tools and applications
- 2 March 2018
Experimental results show that the proposed GRANLM algorithm outperforms the traditional NLM algorithm and other NLM variants in terms of peak signal to noise ratio (PSNR), structural similarity index measure (SSIM), visual quality and method noise.
Performance Analysis of Couple Stress Fluid Operated Elastic Hydrodynamic Journal Bearing
- Punit kumar Rohilla, Rajiv Verma, S. Verma
- EngineeringTribology Online
- 15 September 2019
Performance of bearings used in modern machinery is significantly affected by the elasticity of the bearing liner and viscosity of the lubricant. This paper considers couple stress fluid (CSF) model…
An adaptive isotropic search window based NLM algorithm for image denoising
- Rajiv Verma, R. Pandey
- Computer Science, EngineeringIEEE Power, Communication and Information…
- 1 October 2015
The experimental results have shown that the proposed adaptive NLM algorithm performs consistently better than the conventional NLM in terms of PSNR and visual quality for denoising the images at various noise levels.
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