how to reduce vertices of polygon keep the shape same as much as possible

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jahanzaib ahmad 2019-5-2

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评论： Do Trung 2020-4-15

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i have tried both of these ways pchip(red) and Savitzky-Golay filter(blue) : for polygons.i have problem that the number of vertices of polygons are very high after reading boundaries from image .how can i reduce the number of vertices keeping the shape of the polygons same as much as possible.

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jahanzaib ahmad 2019-5-2

https://ww2.mathworks.cn/matlabcentral/fileexchange/41986-ramer-douglas-peucker-algorithm-demo?s_tid=FX_rc2_behav

this is fantastic .

Do Trung 2020-4-15

Thanks for your share. It's fantastic!

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jahanzaib ahmad 2019-5-2

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https://ww2.mathworks.cn/matlabcentral/fileexchange/41986-ramer-douglas-peucker-algorithm-demo?s_tid=FX_rc2_behav

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Lipi Vora 2019-12-18

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We now have "reducepoly" in MATLAB which can reduce the density of points in your polygon. Please see documentation:https://www.mathworks.com/help/images/ref/reducepoly.html