A New Ophthalmic Ultrasonoscope

Conference paper
Part of the Documenta Ophthalmologica Proceedings Series book series (DOPS, volume 29)

Abstract

Our experiences in ophthalmic ultrasonography and those of other laboratories have shown that it is extremely difficult to correlate ocular histopathology with ultrasonographic images by visual inspection, despite the use of gray scale, video inversion, color and isometric displays. Julesz (1975) has provided the experimental confirmation of the eye’s inability to analyze images of this order of statistical complexity. He has shown that the eye has no difficulty in detecting differences amongst images whose first or second order statistics differ, but has extreme difficulty in arriving at such differentiation when the third or higher order of statistics differ. Thus, in Fig. 1 if one deals with a simple image in which the elements are of equal size and gray scale value, one can readily perceive changes in texture if the spatial distribution amongst the points is altered.

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References

  1. Conners, R.W. & Harlow, C.A. A Theoretical Comparison of Texture Algorithms, IEEE Trans. on Pattern Analysis, PAM1–2 (1980) p. 204.CrossRefGoogle Scholar
  2. Faugeras, O.D. & Pratt, W.K. Decorrelation Methods of Texture Feature Extraction, IEEE Trans. on Pattern Analysis, PAM1–2 (1980) p. 323.CrossRefGoogle Scholar
  3. Julesz, B. Experiments in the Visual Perception of Texture, Sci. Am. 232: 34 (1975).PubMedCrossRefGoogle Scholar
  4. Rose, J.L., Cood, M.S. & Goldberg, B.B. Ultrasonic R-F Waveform Pattern Recognition Analysis of 60 Pathologically Proven Solid Breast Masses, 5th Int. Symp. Untrasonic Imaging & Tissue Characterization, Gaithersburg, Md: Natl. Bureau Stds. (1980) p. 28.Google Scholar
  5. Weszka, J.W. et al. A Comparative Study of Texture Measures for Terrain Classification, IEEE Trans. on Systems, SMC-6 (1976) p. 269.Google Scholar

Copyright information

© Dr W. Junk Publishers, The Hague 1981

Authors and Affiliations

  • G. Baum
    • 1
    • 2
  1. 1.Ultrasound Research LaboratoryAlbert Einstein College of MedicineBronxUSA
  2. 2.Dept. of OphthalmologyYeshira UniversityBronxUSA

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