Region of interest coding of volumetric medical images

Author

Agraftotis, D. ; Bull, David R. ; Canagarajah, Nishan

Author_Institution

Centre for Commun. Res., Bristol Univ., UK

Volume

3

fYear

2003

fDate

14-17 Sept. 2003

Abstract

Three-dimensional wavelet coding of volumetric medical images provides better coding performance compared to corresponding 2D methods by exploiting the inter-slice correlation that exists in such data. It introduces however latencies when it comes to transmitting specific parts of the volume. This paper presents an extension to 3D-SPlHT which allows 3D region of interest (ROI) coding. ROl coding enables faster reconstruction of diagnostically useful regions in volumetric datasets by assigning higher priority to them in the bitstream. It also introduces the possibility for increased compression performance, by allowing certain parts of the volume to be coded in a lossy manner while others are coded losslessly. The necessary modifications to 3D-SPIHT for ROI coding are described and methods for specifying a 3D ROI without adding a significant overhead are suggested. Results are presented highlighting the benefits of the ROl extension.

Keywords

correlation methods; data compression; image coding; image reconstruction; medical image processing; compression performance; digital medical image databases; image reconstruction; interslice correlation; region of interest coding; set partitioning in hierarchical trees; three-dimensional wavelet coding; volumetric medical images; Biomedical imaging; Bit rate; Computed tomography; Discrete wavelet transforms; Image coding; Image storage; Magnetic resonance imaging; Medical diagnostic imaging; Propagation losses; Wavelet transforms;

fLanguage

English

Publisher

ieee

Conference_Titel

Image Processing, 2003. ICIP 2003. Proceedings. 2003 International Conference on

ISSN

1522-4880

Print_ISBN

0-7803-7750-8

Type

conf

DOI

10.1109/ICIP.2003.1247220

Filename

1247220