Share Email Print

Proceedings Paper

Image Compression Evaluation: An Example Of A Pacs Component Analysis Chain Using Psychophysics
Author(s): George W. Seeley; Jan Peter J. de Valk; Herman M. Kroon; Otto Rompelman; Ab R. Bakker
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

This paper describes the evaluation of a new image compression technique as a first example of a successful procedure to evaluate image processing techniques. Forty-eight CT images of the abdomen were compressed and then reconstructed by a method called sub-band coding using vector quantization. The compression ratios used were 16:1 and 19:1. Five radiologists participated in this study: two to select the images and help in determining the appropriate training set for development of the code-book for the algorithm, and three to participate in the actual experiment. Data were taken to determine diagnostic certainty, ratings of the visibility of diagnostically important structures in the image, and accuracy of identifying which images were the originals and which were not. Results from this study demonstrate: (1) The areas under the ROC curve were virtually identical for all three sets of images (AUC's of 0.78, 0.77, 0.78 for original, 16:1, and 19:1 respectively) and these were not statistically different; (2) all diagnostically relevant structures in the compressed images were maintained by the compression technique; and (3) half of the 16:1 compressed images were identified as original images and 3 out of 48 of the 19:1. The authors conclude that the compression technique shows promise for use on CT images.

Paper Details

Date Published: 27 June 1988
PDF: 7 pages
Proc. SPIE 0914, Medical Imaging II, (27 June 1988); doi: 10.1117/12.968715
Show Author Affiliations
George W. Seeley, University of Arizona (United States)
Jan Peter J. de Valk, BAZIS (Netherlands)
Herman M. Kroon, University Hospital (Netherlands)
Otto Rompelman, Delft University of Technology (Netherlands)
Ab R. Bakker, BAZIS (Netherlands)

Published in SPIE Proceedings Vol. 0914:
Medical Imaging II
Samuel J. Dwyer III; Roger H. Schneider; Samuel J. Dwyer III; Roger H. Schneider; Roger H. Schneider; Samuel J. Dwyer III, Editor(s)

© SPIE. Terms of Use
Back to Top