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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/7306
Title: DWT-DCT hybrid scheme for medical image compression
Authors: Singh S.
Kumar V.
Verma H.K.
Published in: Journal of Medical Engineering and Technology
Abstract: With the development of communication technology the applications and services of health telemetics are growing. In view of the increasingly important role played by digital medical imaging in modern health care, it is necessary for large amount of image data to be economically stored and/or transmitted. There is a need for the development of image compression systems that combine high compression ratio with preservation of critical information. During the past decade wavelets have been a significant development in the field of image compression. In this paper, a hybrid scheme using both discrete wavelet transform (DWT) and discrete cosine transform (DCT) for medical image compression is presented. DCT is applied to the DWT details, which generally have zero mean and small variance, thereby achieving better compression than obtained from either technique alone. The results of the hybrid scheme are compared with JPEG and set partitioning in hierarchical trees (SPIHT) coder and it is found that the performance of the proposed scheme is better. © 2007 Informa UK Ltd.
Citation: Journal of Medical Engineering and Technology (2007), 31(2): 109-122
URI: https://doi.org/10.1080/03091900500412650
http://repository.iitr.ac.in/handle/123456789/7306
Issue Date: 2007
Keywords: DCT
DWT
Image compression
Medical imaging
Transform coding
ISSN: 3091902
Author Scopus IDs: 57199224674
25646515800
57204684351
Author Affiliations: Singh, S., Electrical Engineering Department, Indian Institute of Technology, Roorkee 247 667, Uttaranchal, India
Kumar, V., Electrical Engineering Department, Indian Institute of Technology, Roorkee 247 667, Uttaranchal, India
Verma, H.K., Electrical Engineering Department, Indian Institute of Technology, Roorkee 247 667, Uttaranchal, India
Funding Details: The authors are grateful to the Department of Electrical Engineering, Indian Institute of Technology Roorkee, for providing the facilities to carry out this work. Sukhwinder Singh is also grateful to the Sant Longowal Institute of Engineering & Technology, Longowal (PB) for sponsoring doctoral research work, and to the Ministry of Human Resources and Development, Government of India for providing financial assistance.
Corresponding Author: Kumar, V.; Electrical Engineering Department, Indian Institute of Technology, Roorkee 247 667, Uttaranchal, India; email: vinodfee@iitr.ernet.in
Appears in Collections:Journal Publications [EE]

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