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The displacement and deformation of soil mass is the important index in civil engineering. In this paper, white light digital image analysis in frequency domain is introduced to measure the continuous displacement of soil mass. This method has the characteristics of whole -field, non-contact measurement and the measuring system is very simple. CCD camera is used to record the images of soil mass before and after deformation. The images are digitalized and th en analyzed to obtain the displacement of the specimen by using frequency domination correlation arithmetic. Comparing the experimental result with the theoretical value of displacements, the usability of this method for measuring the displacement and deformation is certified.

Continuous Displacement Measurement of Soil Mass Using White Light Digital Image Analysis in Frequency Domain