August2015 Issue Vol.5 No.8
Research Supervisor & Head
Department of Computer Science, Erode Arts & Science College (Autonomous), Erode, Tamil Nadu, India
Ph.D. Research Scholar, Department of Computer Science, Erode Arts & Science College (Autonomous), Erode, Tamil Nadu, India
Abstract: Digital image processing the term image refers to a digital image and its manipulation by means of processor. Data compression is the computing process to face the problems of the constraints in memory. Data compression is one of the important procedures to reduce the space occupied by a file, which normally leads to reduction of time taken to access the text file. The technique contains two types, they are lossy and lossless compression technique. This research work deals with lossless compression techniques. In this work describes a comparison of various techniques such as Run Length Encoding, Huffman Coding, Lempel Ziv Welch and Arithmetic Coding. The parameters that are considered to analyze text file are Compression Time, Compression Speed and Compression Ratio.
Keywords: Data Compression, Lossless compression, RLE, Huffman, LZW, Arithmetic.