Leaf size is too small for the input dataset. PCL Voxel Grid 问题

Leaf size is too small for the input dataset. PCL Voxel Grid 问题

见：
https://blog.youkuaiyun.com/rocachilles/article/details/88227272

这往往是因为输入点云的尺寸过大，而leaf size太小，导致voxel indices数目不足以记录所有的voxels，导致溢出.