Computational Imaging & VisAnalysis
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#49: A combined matching and tensor method to obtain high fidelity velocity fields from image sequences of the non-rigid motion of the growth of a plant root

H. S. Jiang, K. Palaniappan, and T. I. Baskin

IASTED Int. Conf. on Biomedical Engineering, pgs. 159--165, 2003

detection, segmentation, features, tracking, convex relaxation, plants, biomedical

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Abstract

This paper addresses the problem of estimating the non rigid growth motion of plant roots. Several assumptions and constraints about the motion estimation are made and a min-cost objective function for robust matching method is constructed. To expedite the matching method, a tensor-based method to initialize the searching parameters is provided. The tensor confidence field is used as a mask to indicate the sites where coherent motion occurred. Consistency between the forward matching and the backward matching is used as a confidence test. Other confidence testimonies include the sharpness of the peak/valley of the objective function in the robust estimation procedure.