3d point cloud and normal vector to the surface

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developer
developer 2011-5-2
回答： Kenta 2020-4-21
I am using 3d laser scanner , and have x,y and z axis from my sensor these three points which are of 120x160 each, now what i want to know is that how can i build 3d point cloud from my these three points and how can i draw the normal to the surface in the resulting point cloud.

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回答（2 个）

Kenta
Kenta 2020-4-21
As of now, pcshow is available for displaying point clouds and quiver3 is effective to show the normal vectors.
Please find here for the detail.
https://jp.mathworks.com/help/vision/ref/pcnormals.html
Patrick Kalita
Patrick Kalita 2011-5-2
scatter3 would be useful for drawing the point cloud.
surfnorm and/or quiver3 would be useful for displaying the normals.
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Patrick Kalita
Patrick Kalita 2011-5-2
Convert your x, y, and z arrays into vectors with the colon operator:
scatter3(x(:), y(:), z(:))
Patrick Kalita
Patrick Kalita 2011-5-2
http://www.mathworks.com/help/techdoc/ref/colon.html

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