Syntax is: pcl_voxel_grid input.pcd output.pcd <options>
Downsample a cloud using pcl::VoxelGrid. For more information, use: pcl_voxel_grid -h
where options are:
-leaf x,y,z = the VoxelGrid leaf size (default: 0.010000, 0.010000, 0.010000)
-field X = filter data along this field name (default: z)
-fmin X = filter all data with values along the specified field smaller than this value (default: -inf)
-fmax X = filter all data with values along the specified field larger than this value (default: inf)