alexa Optimization of Bit Rate in Medical Image Compression
ISSN ONLINE(2320-9801) PRINT (2320-9798)

International Journal of Innovative Research in Computer and Communication Engineering
Open Access

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Special Issue Article

Optimization of Bit Rate in Medical Image Compression

 
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Abstract

The need for data compression has rapidly increased over the years. This is mainly due to the evolution of high speed networks and modern communication techniques. The main factors in multimedia and communication systems are the storage space and the time delay for transmission. During the optimization process the modified Lloyds algorithm searches for empty cells i.e. the unused code vectors. Also it keeps track of the image vector producing maximum distortion corresponding to the code vector representing maximum number of image vectors are used to replace the unused code vectors thus removing the empty cells from the code book. As the iteration goes on the empty cells are completely removed. The modified code book is free from empty cells it is more efficient than the LBG algorithm and produces a better picture quality. The performance measures can be compared using parameters such as Mean Square Error and Picture Signal to Noise Ratio.

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