Goutam Kumar Maity

An All-Optical New Universal Gate Using Mach-Zehnder Interferometer

From the seventies of the last century the all-optical universal logic gate has formed as an unconventional form of computing. It is very new relatively in the area of extensive applications in low power CMOS, quantum computing, DNA computing, digital signal processing (DSP), nanotechnology, communication, computer graphics, etc. Here we present and configure a new universal gate (AG gate) in all-optical domain and also in this paper we have explained their principle of operations and used a theoretical model to fulfil this task, finally supporting through numerical simulations. In the field of ultra-fast all-optical signal processing Mach-Zehnder interferometer (MZI), semiconductor optical amplifier (SOA) -based, has an important function. The different logical (realization of Boolean function) operations can be executed by designed circuits with AG gate in the domain of reversible logic-based information processing.

TOAD-Based All-Optical Reversible New Multiplexer

Recently the reversible logic has formed as an unconventional form of computing. It is relatively new in the area of extensive applications in low power CMOS, quantum computing, DNA computing, digital signal processing (DSP), nanotechnology, communication, computer graphics, etc. Here we present a new reversible multiplexer circuit with the help of all-optical Toffoli gate in all-optical domain and also in this paper we have explained their principle of operations and used a theoretical model to fulfil this task, finally supporting through numerical simulation. In the field of ultrafast all-optical signal processing Terahertz Optical Asymmetric Demultiplexer (TOAD) has an important function. The different logical (realization of Boolean function) functions can be executed by this multiplexer in the domain of reversible logic-based information processing.

Video summarisation using optimum global threshold technique based on genetic algorithm

Most of the methods for video summarisation rely on complicated clustering algorithms that make them too computationally complex for real time applications. This paper presents an efficient approach for video summary generation that does not rely on complex clustering algorithms and does not require frame length as a parameter. The present scheme combines colour histogram and edge histogram features with optimum global thresholding to detect key frames. The optimum threshold is selected based on genetic algorithm GA to increase the performance of the proposed system. For each shot, key frames are extracted and similar key frames are eliminated. Experimental results duly support those claims.

Reversible watermarking using channel coding and lifting for cultural heritage and medical image

Reversible data embedding has drawn lots of interest recently, specially in the field of protection for cultural heritage and medical image. Being reversible, the original digital content can be completely restored. This paper uses Tians algorithm of difference expansion as reversible watermarking scheme for the protection of cultural heritage and medical image. Lifting together with channel coding is used to increase the detection performance of extracted watermark bits. Experimental results and performance comparison with other reversible data hiding schemes are presented to demonstrate the validity of the proposed algorithm.

Performance Improvement of Reversible Watermarking Using Convolution Coding and Lifting

Reversible data embedding has drawn lots of interest recently especially in the field of protection for cultural heritage and medical image. Being reversible, the original digital content can be completely restored. This paper proposes Tian’s algorithm of difference expansion as a reversible watermarking scheme for the cultural heritage image. Lifting together with convolution coding is used to increase the detection performance of watermark bits. Experimental results and performance comparison with other reversible data hiding schemes are presented to demonstrate the validity of the proposed algorithm.

Implementation of Reed Muller Expansion Technique Using Mach-Zehnder Interferometer Based All Optical Reversible Gates

From the last century the reversible logic has formed as an unconventional form of computing. It is relatively very new in the area of extensive applications in low power CMOS, quantum computing, digital signal processing (DSP), nanotechnology, communication, etc. In all-optical domain with the help of Feynman and Toffli gates we represent the implementation of Reed Muller transformation technique for any canonical SOP (sum of product) expression and here also we have introduced their principle of operations and used a theoretical model to complete the task. In the field of ultra-fast all-optical signa processing Mach–Zehnder interferometer (MZI), semiconductor optical amplifier (SOA)-based, has an important function. The different logical (realization of Boolean function) functions can be executed by this method with Feynman and Toffoli gates in the domain of reversible logic-based information processing.