The contrast of an image is a feature which determines how image looks better visually. In this paper, we are analysing the capability of activation functions for contrast enhancement. Activation functions are classically used in neural network. In this paper, Activation function creates a mask which is operated on the image on pixel by pixel basis. On the basis of activation function the pixel...

A growth estimate on the Fourier coefficients along geodesics for eigenfunctions of the Laplacian is given on compact hyperbolic manifolds. Along the way, a new summation formula is proved.

Utilizing echoic intension and distribution from different organs and local details of human body, ultrasonic image can catch important medical pathological changes, which unfortunately may be affected by ultrasonic speckle noise. A feature preserving ultrasonic image denoising and edge enhancement scheme is put forth, which includes two terms: anisotropic diffusion and edge enhancement, contro...

In this paper we present a modified version of the Hyperbolic Tangent Activation Function as a learning unit generator for neural networks. The function uses an integer calibration constant as an approximation to the Euler number, e, based on a quadratic Real Number Formula (RNF) algorithm and an adaptive normalization constraint on the input activations to avoid the vanishing gradient. We demo...

This paper presents an approach for the personal authentication using rank-level fusion of multispectral palmprints, instead of using multiple biometric modalities and multiple matchers. The rank level fusion involving the non linear combination of hyperbolic tangent functions gives the best recognition rate for the Rank 1 obtained from two types of features, viz., sigmoid and fuzzy. The result...

The paper presents in detail a relatively simple implementation method of the hyperbolic tangent function, particularly targeted for FPGAs. research goal proposed was to examine usage approximation ordinary or Chebyshev polynomials function. Several miscellaneous versions have been considered. They differ polynomial degree, number intervals which domain function is divided, etc. Both floating-p...

We apply topological methods to study the smallest non-zero number λ1 in the spectrum of the Laplacian on finite area hyperbolic surfaces. For closed hyperbolic surfaces of genus two we show that the set {S ∈ M2 : λ1(S) > 1 4 } is unbounded and disconnects the moduli spaceM2. Using this, for genus g ≥ 3, we show the existence of eigenbranches that start as λ1 and eventually becomes > 1 4 .

The dynamics of MHD non-Newtonian fluid flow past a cylinder with slip boundary condition and magnetic field is addressed in this study. (tangent hyperbolic) considered study are nail polish whipped cream. This article investigates the statistical analysis two-dimensional tangent hyperbolic over condition. partial differential equations describing problem later transformed into ordinary equatio...