如何在Matlab的坐标平面上对点云进行重新采样？

Question

When I read an article about 3D face recognition, I read this sentence: "The corrected 3D face is further resampled with a uniform resolution of 1mm on the xy plane". I found it on the Internet and only found out how to downsample the point cloud in the whole space. But the article said that resampling was done on the xy plane。 I tried to contact the authors but there are no response. If anyone knows, please enlighten me, thank you!

Answer 1

I guess the text means: resample point cloud of the corrected 3D face at a set of points (x,y,z). (x, y) of these points is of uniform distribution on the xy plane. Then read z of these points. I haven't read this article or Ref. 25 which is about pose normalization. I guess point cloud is different from the origin after pose normalization. Maybe more points so we can downsample. Maybe we can conjecture some points by interpolation.