Visual Force Measurement Using Pseudo Zernike Moment Invariants

Abstract

Abstract: A new visual force measurement method was proposed to measure applied forces through analyzing pseudo Zernike moment invariants. First, a feature vector of pseudo Zernike moment invariants is used to describe the deformed microgripper shape in microassembly. This description indicates a function between the applied force and the feature vector of moment invariants. Then, a training set is established, where the input and the output represent the feature vector of moment invariants and the corresponding known applied force, respectively. Finally, a support vector machine (SVM) compares the feature vectors in the testing set with those ones in the training set, implements multiclass classification and estimates unknown applied forces in the testing set. The experiments on four different microcantilevers validate the proposed method.

Key words: visual force measurement, pseudo Zernike moment invariants, support vector machine, multi-class classification

CLC Number:

TP 391.4

HU Wen-1, LIU Hong-Tao-1, HU Chun-2, FAN Ming-Xia-3, MO Jin-Qiu-1, WANG Shi-Gang-1. Visual Force Measurement Using Pseudo Zernike Moment Invariants[J]. Journal of Shanghai Jiaotong University, 2013, 47(04): 589-593.

References

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