Title: An object-based lossless compression approach for medical images using DPCM

Authors: Marykutty Cyriac; C. Chellamuthu

Addresses: Department of ECE, Jerusalem College of Engineering, Pallikaranai, Chennai 600100, India ' Department of EEE, RMK Engineering College, R.S.M. Nagar, Kavaraipettai, Gummidipoondi Taluk, Thiruvallur Dt, Tamil Nadu 601206, India

Abstract: In this paper, an object-based coding technique for the lossless compression of medical images has been introduced. Since the region of interest in medical images is generally the object in the centre of the image, it is extracted and encoded using a lossless DPCM coder. The non-image region is split into sub-regions and concatenated after pre-processing, and encoded using the same DPCM method. For performance analysis, the proposed method is applied to various medical images. Bits per pixel values are calculated and compared with those of the object based wavelet transform coder and the direct coders. The results show that the proposed coder yields improved bits per pixel value than the rest of the coders.

Keywords: object-based coding; medical images; region of interest coding; differential pulse code modulation; lossless image compression; lifting wavelet transform; background modelling; block based DPCM; differential pulse code modulation; bits per pixel.

DOI: 10.1504/IJBRA.2016.075400

International Journal of Bioinformatics Research and Applications, 2016 Vol.12 No.1, pp.59 - 71

Available online: 19 Mar 2016 *

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