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2015  (Vol. 6, No. 1)

Face Recognition by Implying Illumination  Techniques – A Review Paper

Sasan karamizadeh*, Shahidan M abdullah, Seyed Mohammad Cheraghi, Elias Randjbaran, Farrokh Karamizadeh 


Vol. 06 (01), 2015, 001-007

Abstract

The purpose of this review paper is to present the technical basis for establishing the quality criteria by using the face recognition techniques and smooth filters. The metamorphoses in face images are formed by illumination, in general they show the better quality compared with the metamorphoses in inter-person by differentiating the identities. Conversely, face recognition over illumination possesses several applications in dealing with a non-intrusive biometric feature. Several attempts have been done regarding to the research, nevertheless, some of them are including the deficiencies in comprehending the sub-spaces in illumination pictures, challenging with intractability in face modelling and complicated mechanisms of face surface reflections. This study aims to offer a crucial review of illumination techniques, and image-based on illumination variation in face recognition.

Keywords: illumination, Face recognition, technique


Submitted
 Accepted
November 2014
January 2015
 

Influence of Tolerance Stack-Up on Dynamics of Zero Degree of Freedom Parallelogram Configurations

C. A. Akhadkar, A.B. Deoghare, A.M. Vaidya, P.V. Walke


Vol. 06 (01), 2015, 008-023

Abstract

It is well known fact that the performance variation occurs due to the variations in link tolerances. Undesirable vibrations, reduction of fatigue life and degradation of performance of the mechanism are promulgated via tolerances and joint clearances. Additional and uncontrollable degrees of freedom are the prime sources of error. The present paper shows the cause and effect relationship of tolerance stack-up on a five bar parallelogram mechanism. Tolerance stack-up mainly sub-grouped as link dimension tolerance and joint clearance. A case study of three spindle cleaner mechanism is demonstrated. Link dimension tolerance and joint clearance are as per manufacturing standards to quantify the variations. Impact force is developed at the clearance joint. Elastic deformation takes place at the collision points generating a normal force. Driving torque, amount of clearance are input parameter for the analysis and contact stiffness is evaluated using algebraic equations. Contact stiffness between the joint plays very significant role to maintain continuous contact between two bodies. The results of function generation and contact impact forces at the clearance joints are compared with ideal joint five bar parallelogram mechanism.

Keywords: tolerance stack-up, clearance joint, impact method, five bar mechanism, zero degree of freedom

Submitted
 Accepted
December 2014
January 2015
 

K. Kurita

Vol. 06 (01), 2015, 024-028


Abstract

In this study, an effective non-contact technique for the measurement of moving vehicle is reported. A theoretical model for the electrostatic induction current generated due to a change in the electrical capacitance between a given electrode and vehicle is proposed. This model effectively explains the behavior of the shape of the electrostatic induction current flowing through the measurement electrode.

Keywords: Electrostatic induction, Vehicle detection, Current measurement


Submitted

   Accepted
December 2014
   February 2015