Real-time measurement of joint movement using a digital signal processor-based image processing system

John D. Moorehead; David Mark Harvey; Peter H. Dangerfield; S. C. Montgomery

doi:10.1117/12.186579

21 September 1994 Real-time measurement of joint movement using a digital signal processor-based image processing system

John D. Moorehead, David Mark Harvey, Peter H. Dangerfield, S. C. Montgomery

Author Affiliations +

Proceedings Volume 2298, Applications of Digital Image Processing XVII; (1994) https://doi.org/10.1117/12.186579
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

Abstract

A new low cost imaging system has been devised to detect and measure joint movement to help with the diagnosis of ligament injuries in the human knee. The system uses a domestic video camcorder to record the movement of marks on a patient's knee as it is flexed. The pictures are then fed into the imaging system, where the coordinates of each mark are determined for each angle of flexion. The coordinate data is then processed to show the dynamic operation of the knee, from which an assessment of ligament damage can be made. The imaging system is comprised of a PC host, a commercial frame store, and a custom built TMS320C40 digital signal processor (dsp) board. The dsp is used to perform correlation and other imaging functions, to automatically determine the mark coordinates in real time. This paper describes the application and development of the system, and gives the results of the research to date.

Citation Download Citation

John D. Moorehead, David Mark Harvey, Peter H. Dangerfield, and S. C. Montgomery "Real-time measurement of joint movement using a digital signal processor-based image processing system", Proc. SPIE 2298, Applications of Digital Image Processing XVII, (21 September 1994); https://doi.org/10.1117/12.186579

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