HELP:::::How To Find The CENTRAL Point

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sese
sese 2012-9-2
Hello Guys
I have this question for you today, i really tried to solve it but i faced some problems to do so, my question is to find the central point for arbitrary shape, i have this shape and i hope you to help me to find the central point.

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回答（1 个）

Image Analyst
Image Analyst 2012-9-2
编辑：Image Analyst 2012-9-2
Were you having some problem translating the wikipedia formula into MATLAB code: http://en.wikipedia.org/wiki/Centroid#Centroid_of_polygon? If so, post your MATLAB code and we'll help. You might split the polygon into triangles and use the law of cosines and law of sines to find the vertex coordinates:
http://en.wikipedia.org/wiki/Law_of_cosines
http://en.wikipedia.org/wiki/Ptolemeus_theorem
http://www.mathworks.com/matlabcentral/answers/28496-find-the-centroid-of-a-polygon
http://www.mathworks.com/matlabcentral/answers/25658-centroid-of-polyarea

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