NDLI: ROI coding with integer wavelet transforms and unbalanced spatial orientation trees

Content Provider	IEEE Xplore Digital Library
Author	Tasdoken, S. Cuhadar, A.
Copyright Year	2003
Description	Author affiliation: Dept. of Syst. & Comput. Eng., Carleton Univ., Ottawa, Ont., Canada (Tasdoken, S.; Cuhadar, A.)
Abstract	In this paper, we present region-based coding of medical images using integer wavelet transforms and the modified SPIHT algorithm. Our method differs from previously reported region-of- interest (ROI) coders in such a way that the region-based integer wavelet transform is used to obtain the representation of the partitioned image plane rather than differentiating the coefficients associated with each region after using the conventional wavelet decomposition. In fact, this region-based representation retains the properties of the conventional wavelet transform, and thereby facilitates the use of conventional wavelet coefficient plane coders for region-based coding. We propose a novel region-based coder based on the SPIHT algorithm. Previous region-based SPIHT coders employ conventional one-to-four parent-child binding, which accumulates coefficients from different regions within a spatial orientation tree. Alternatively, we present the unbalanced spatial orientation tree structure, which prevents the aforementioned heterogeneity in the tree, and size of which adapts to the size of the region being encoded. In addition to its superior rate-distortion (R-D) performance, the proposed coder offers region-size insensitive coding of the partitioned wavelet coefficient plane.
Sponsorship	Whitaker Found
Starting Page	841
Ending Page	844
File Size	396212
Page Count	4
File Format	PDF
ISBN	0780377893
ISSN	1094687X
DOI	10.1109/IEMBS.2003.1279896
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-09-17
Publisher Place	Mexico
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wavelet transforms Image coding Discrete wavelet transforms Wavelet coefficients Bit rate Biomedical imaging Medical diagnostic imaging Shape Biomedical engineering Systems engineering and theory
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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