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Proceedings Paper

Signal characteristics and compression performance evaluation of digital pathological microscopic images with up to SHD resolution
Author(s): Akira Okumura; Junji Suzuki; Isao Furukawa; Sadayasu Ono; Tsukasa Ashihara
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Paper Abstract

Digitizing high-quality microscopic images and developing input/output technology for displaying those results is critical to tele-pathology in which pathological microscopic images are transferred to remote locations where they are diagnosed by specialists. This paper will discuss the results achieved by directly digitizing pathological microscopic images at a 2k by 2k resolution, and then using a super high definition imaging system to analyze their signals and evaluate compression performance. We will start off by digitizing samples that a pathologist will actually use in making a diagnosis, and then analyze their color distribution and spatial frequencies characteristics by comparing them to general images. This will make it apparent that such pathological images characteristically contain high spatial frequency in their chrominance components. We will also discuss the evaluation results of color differences for L.a.b space and compression ratios achieved when using JPEG to encode pathological images. We will also present a subjective evaluation of the influence sub- sampling of chrominance components has on image quality.

Paper Details

Date Published: 4 April 1997
PDF: 12 pages
Proc. SPIE 3025, Very High Resolution and Quality Imaging II, (4 April 1997); doi: 10.1117/12.270050
Show Author Affiliations
Akira Okumura, NTT Optical Network Systems Labs. (Japan)
Junji Suzuki, NTT Optical Network Systems Labs. (Japan)
Isao Furukawa, NTT Optical Network Systems Labs. (Japan)
Sadayasu Ono, NTT Optical Network Systems Labs. (Japan)
Tsukasa Ashihara, Kyoto Prefectural Univ. of Medicine (Japan)

Published in SPIE Proceedings Vol. 3025:
Very High Resolution and Quality Imaging II
V. Ralph Algazi; Sadayasu Ono; Andrew G. Tescher, Editor(s)

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