How can I check if a point belongs to a flat surface or not?

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Hadeer Mostafa 2016-11-8

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https://ww2.mathworks.cn/matlabcentral/answers/311275-how-can-i-check-if-a-point-belongs-to-a-flat-surface-or-not

评论： Hadeer Mostafa 2016-11-8

Hi, I have LIDAR point clouds data, I will perform sharp feature detection in point clouds. can anyone tell me how can I check if a point belongs to a flat surface or not?

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bemin 2016-11-8

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get the Z axis value for the point and and compare it to the Z axis value for the surface

Dear bemin, Thanks a lot for replay, I want to know what do you mean by "Z axis value for the surface"? my file contains the coordinates(XYZ) of points only that generate digital elevation model (DEM) please give me more explanation with example. Thanks advance

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