New image-processing system for analysis, display and measurement of static and dynamic foot pressures

  • K. M. Patil
  • M. S. Srinath
Computing and Data Processing

Abstract

A new image-processing system, using a video digitiser with an IBM-compatible PC/AT, is developed for acquisition and processing of low-contrast, lowintensity barographic images of both feet for assessment of pressure distribution during standing and walking. Data displays, in the form of centres of pressures, isopressures contours, perspective views of pressures, grey scale image and walking pressure patterns, combined image of walking pressures, paths of centres of pressures and pressure variations with time, are developed. These have provided very useful and early information regarding the internal structural changes in the bones of the foot and sites at risk of ulcer development in leprosy subjects and enable suitable corrective orthopaedic procedures to be adopted.

Keywords

Dynamic foot pressure Grey scale image Image processing Pedabarographic measurement 

References

  1. Abdou, I. E. andPratt, W. K. (1979) Quantitative design and evaluation of enhancement/thresholding edge detectors.Proc. IEEE,67, 753–763.CrossRefGoogle Scholar
  2. Betts, R. P., Duckworth, T. andAustin, I. G. (1980a) Critical light reflection at a plastic/glass interface and its application to foot pressure measurements.J. Med. Eng. & Technol.,4, 136–142.CrossRefGoogle Scholar
  3. Betts, R. P., Franks, C. I. andDuckworth, T. (1980b) Analysis of pressures and loads under the foot, Part 1: Quantitation of the static distribution using the PET computer.J. Clin. Phys. Physiol. Meas.,1, 101–112.CrossRefGoogle Scholar
  4. Chodera, J. (1957) Examination methods of standing in man. FU-Czechoslovakian Academy of Sciences, Prague, Vols. 1–3.Google Scholar
  5. Duckworth, T. andBetts, R. P. (1978) The varus foot in spinal dysraphism.Zeitschr. für Kinder-Chir. & Grenzgebiete,25, (4), 375–386; (Proc. Oslo Meeting of the Society for Research into Hydrocephalus and Spina Bifida, 1978).Google Scholar
  6. Franks, C. I., Betts, R. P. andDuckworth, T. (1983) Microprocessor-based image processing system for dynamic foot pressure studies.Med. & Biol. Eng. & Comput. 21, 566–572.CrossRefGoogle Scholar
  7. Weszka, J. S., Nagel, R. N. andRosenfeld, A. (1974) A threshold selection technique.IEEE Trans.,C-23, 1322–1326.MATHGoogle Scholar

Copyright information

© IFMBE 1990

Authors and Affiliations

  • K. M. Patil
    • 1
  • M. S. Srinath
    • 1
  1. 1.Biomedical Engineering Division, Department of Applied MechanicsIndian Institute of TechnologyMadrasIndia

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