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Liver cancer is one of the most popular cancer diseases and causes a large amount of death every year. Computer-aided liver analysis can help in reducing the risk of liver surgery and design treatment strategies. This paper develops a novel Computer-Aided Diagnosis (CAD) system using Contourlet Transform based feature extraction for automatic diagnosis of(More)
Wave atom transform is a new multi-resolution technique, which has the ability to adapt to arbitrary local directions of a pattern, and to sparsely represent anisotropic patterns aligned with the axes. In this paper, a de-noising technique is proposed to remove the rician noise from Magnetic Resonance Images using wave atom shrinkage. It is well known that(More)
Magnetic resonance imaging is a medical imaging technique that measures the response of atomic nuclei of body tissues to high frequency radio waves when placed in a strong magnetic field and that produces images of the internal organs. De-noising is always a challenging problem in magnetic resonance imaging and important for clinical diagnosis and(More)
Face recognition has been an area of interest among researchers in pattern recognition for the past few decades. Researches in face recognition are basically concentrated on texture based and geometry based features. The main advantage of Face recognition systems utilizing depth information is the availability of geometrical information of the face(More)
This paper proposes an efficient multimodal face recognition method by combining the textural as well as depth features, extracted from directional faces of input image. Directional faces are obtained using filters which are designed using Local Polynomial Approximation (LPA). The efficient modified Local Binary Pattern (mLBP) operator is used for the(More)
The objective of this paper is to control a single phase power rectifier using FPGA based PWM (Pulse Width Modulation) controller to get a required output. Nowadays PWM control technique has become an integral part of the most power electronics system. This technique is the most suitable one for controlling the output voltage of a power rectifier. In this(More)
Face is being considered as one of the most commonly used biometric modality. The inaccuracy in two dimensional face recognition systems is mainly due to pose variations, occlusions, illumination etc. Among this, changes in illumination condition do not affect 3D face recognition systems. But pose variation drastically changes the appearance of face images.(More)