International Journal of Engineering Research in Electronics and Communication Engineering

Impact of Low Intensity Pixels of Gray scale Images in compression

Author : V.Lakshmi Praba ¹ S.Anitha ²

Date of Publication :21st April 2018

Abstract: Image compression plays a vital role in digital world. Storing and transmitting digital image with high quality is complex task. There are many methods for compressing digital images. In this paper, the digital image is divided into low and high intensity pixels . The low intensity part of image alone is compressed and decompressed using three different methods to know the frequency of low intensity pixels in the image. The impact of low intensity pixels in the compression technique is also studied. DCT based Arithmetic encoding, Haar wavelet and Quad tree decomposition these three compression methods are tested with some images and the best method is compared with JPEG 2000 (Joint Pictures Experts Group 2000) and also analysed

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