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Proceedings Paper

Compression of medical images with regions of interest (ROIs)
Author(s): Man-Bae Kim; Yong-Duk Cho; Dong-Kook Kim; Nam-Kyu Ha
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Paper Abstract

In most medical images, regions of interest (ROIs) that may include clinically important information exist and occupy a small portion of the image. Based on this observation, we present compression methods that can effectively compress medical images with ROIs. They are implemented in a manner that ROIs are reversibly compressed and non-ROI (the region outside of ROIs) is irreversibly compressed. In this paper, we present and analyze the three different compression schemes: a DCT-based compression, a DCT/HINT compression, and a HINT-based compression. These methods compress ROIs by reversible compression and non-ROI by irreversible compression. Our current study shows that compression ratio decreases exponentially as ROI ratio (the portion of ROIs in the image) increases. Also, it showed that RMSE (Root-Mean-Squared Error) is not much dependent upon the ROI ratio. To verify this, we tested seven heart X-ray images, twelve head MR images, ten abdomen CT images, and ten chest CT images. Our experimental results showed that the DCT-based compression is the best among the three proposed methods in terms of compression ratio, algorithm complexity, and quality of a reconstructed image.

Paper Details

Date Published: 21 April 1995
PDF: 12 pages
Proc. SPIE 2501, Visual Communications and Image Processing '95, (21 April 1995); doi: 10.1117/12.206715
Show Author Affiliations
Man-Bae Kim, Samsung Advanced Institute of Technology (South Korea)
Yong-Duk Cho, Samsung Advanced Institute of Technology (South Korea)
Dong-Kook Kim, Samsung Advanced Institute of Technology (South Korea)
Nam-Kyu Ha, Samsung Advanced Institute of Technology (South Korea)

Published in SPIE Proceedings Vol. 2501:
Visual Communications and Image Processing '95
Lance T. Wu, Editor(s)

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