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Proceedings Paper

Prototype of image compression system for medical images
Author(s): Yukihiro Nakagawa; Toshiyuki Yoshitake; Yoshiyuki Ohta; Toshiyuki Gotoh; Masumi Yoshida
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Paper Abstract

We previously developed an image reconstruction display for reconstructing images compressed by our hybrid compression algorithm. The hybrid algorithm, which improves image quality, applies Discrete Cosine Transform coding (DCT) and Block Truncation Coding (BTC) adaptively to an image, according to its local properties. This reconstruction display receives the compressed data from the host computer through a BMC channel and quickly reconstructs good quality images using a pipeline-based microprocessor. This paper describes a prototype of a system for compression and reconstruction of medical images. It also describes the architecture of the image compression processor, one of the components of the system. This system consists of the image compression processor, a host main-frame computer and reconstruction displays. Under this system, distributed processing in the image compression processor and the image reconstruction displays reduces the load on the host computer, and supplies an environment where the control routines for PACS and the hospital information system (HIS) can co-operate. The compression processor consists of a maximum of four parallel compression units with communication ports. In this architecture, the hybrid algorithm, which includes serial operations, can be processed at high speed by communicating the internal data. In experiments, the compression system proved effective: the compression processor compressed a 1k x 1k image in about 2 seconds using four compression units. The three reconstruction displays showed the image at almost the same time. Display took less than 7 seconds for the compressed image, compared with 28 seconds for the original image.

Paper Details

Date Published: 1 August 1990
PDF: 10 pages
Proc. SPIE 1234, Medical Imaging IV: PACS Systems Design and Evaluation, (1 August 1990); doi: 10.1117/12.18995
Show Author Affiliations
Yukihiro Nakagawa, Fujitsu Labs. Ltd. (Japan)
Toshiyuki Yoshitake, Fujitsu Labs. Ltd. (Japan)
Yoshiyuki Ohta, Fujitsu Labs. Ltd. (Japan)
Toshiyuki Gotoh, Fujitsu Labs. Ltd. (Japan)
Masumi Yoshida, Fujitsu Labs. Ltd. (Japan)

Published in SPIE Proceedings Vol. 1234:
Medical Imaging IV: PACS Systems Design and Evaluation
Samuel J. Dwyer III; R. Gilbert Jost M.D., Editor(s)

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