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Compression guidelines for diagnostic telepathology.

D J Foran1, P P Meer, T Papathomas

  • 1Center for Biomedical Imaging, UMDNJ-Robert Wood Johnson Medical School, Piscataway 08854, USA. djf@pleiad.umdnj.edu

IEEE Transactions on Information Technology in Biomedicine : a Publication of the IEEE Engineering in Medicine and Biology Society
|March 1, 1997
PubMed
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Lossy compression is feasible for digital pathology images. Experts found higher compression ratios acceptable when assessing image quality using the largest tolerable distortion criterion, supporting its use in telepathology.

Area of Science:

  • Digital pathology
  • Medical imaging
  • Image compression

Background:

  • Digital technologies are increasingly used in healthcare for image management.
  • Image compression is essential for efficient storage and transmission of medical images.
  • Assessing the impact of compression on diagnostic accuracy is crucial.

Purpose of the Study:

  • To investigate the feasibility of lossy compression for digitized microscopic pathology images.
  • To evaluate the effect of compression on clinical assessment under different perceptual criteria.
  • To determine acceptable compression ratios for diagnostic telepathology.

Main Methods:

  • Pathology experts assessed digitized chromatic microscopic pathology specimens.
  • Images were compressed using standard JPEG compression.

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  • Compression effects were measured using just noticeable difference (j.n.d.) and largest tolerable distortion (l.t.d.) criteria.

    • Main Results:

    • Higher compression ratios were found satisfactory under the largest tolerable distortion (l.t.d.) criterion compared to the just noticeable difference (j.n.d.) criterion.
    • Lossy compression demonstrated potential for maintaining diagnostic quality in pathology images.
    • Expert assessment indicated that significant compression is achievable without compromising diagnostic utility.

    Conclusions:

    • Lossy image compression is a viable tool for digital pathology.
    • The largest tolerable distortion (l.t.d.) criterion allows for greater compression ratios in clinical image assessment.
    • Lossy compression shows promise for advancing diagnostic telepathology applications.