This paper introduces the method of circle figure spot edge extraction and center positioning,that is based on circle figure spot grey scale,extracts spring rank character points on cross section line,and gets boundary point pair and then calculates the centre of circles and radiuses of three cross section point pairs by means of least squares method,its positioning precision is from 0.

An experimental study on the distributed source boundary point method based nearfield acoustic holography;

On calculating the nearfield solutions of acoustic radiation caused by vibrating body with the boundary point method;

Study on error of acoustic radiation calculated with boundary point method (BPM);

2-D simulation of electrostatic properties of piezoelectric composites using the boundary node method;

After the separation of the network,the main network is extracted in which weighted centrality is calculated and betweenness on the basis of boundary nodes is developed which results in the reduction of amount of computation.

Novel nearfield acoustic holography based on the distributed source boundary point method;

Boundary Points Detection Algorithm Based on Coefficient of Variation

A theoretical model for reconstruction and prediction of acoustic scattering fields is built based on the distributed source boundary point method (DSBPM).