Marking-dots digital image correlation and application to studies of spinal biomechanics

Jinlong Chen; Cuiru Sun; Yuwen Qin; Xinhua Ji

doi:10.1117/12.621988

12 April 2005 Marking-dots digital image correlation and application to studies of spinal biomechanics

Jinlong Chen, Cuiru Sun, Yuwen Qin, Xinhua Ji

Proceedings Volume 5852, Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics; (2005) https://doi.org/10.1117/12.621988
Event: Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics, 2004, -, Singapore

Abstract

A method of marking-dots digital image correlation is developed to measure the biomechanics behavior of cattle spine. In the system, a video camera and personal computer are used to acquire digitized images of a random speckle pattern on the surface of a marking-dot before and after deformation. The method of making-dots digital image correlation can immediately measure the transformation by tracking the gray value pattern in small local neighborhoods commonly referred to as subsets. In the experiment, a specimen was selected from the cattle's spine that was covered with some muscles and tissues. It is apparent that the covering muscles and tissues cannot be treated as the information carrier, for they must be kept active and moist curing by the physiological brine in the course of the experiment. In order to solve the problem, the marking-dots were fixed into the vertebrae, and the front surface of a marking-dot was coated with a thin layer of white paint and splattered with black spot so as to create a random black-on-white speckle pattern. Experimental results have shown that the marking-dots digital image correlation method can be applied to the measurement of the biomechanical behavior of cattle spine, and offer an effective measurement tool to research the range of motion of the adjacent segment in spine under intervertebral fusion.

Citation Download Citation

Jinlong Chen, Cuiru Sun, Yuwen Qin, and Xinhua Ji "Marking-dots digital image correlation and application to studies of spinal biomechanics", Proc. SPIE 5852, Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics, (12 April 2005); https://doi.org/10.1117/12.621988

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