Read data from a binary stream. Raise StopIteration if the property could not be read.

Return generator over the (numerical) PLY representation of the list data (length followed by actual data).

Write data to a binary stream.

Write data to a binary stream.

List properties always have a numpy dtype of "object".

Args: point_clouds: (batch_size, num_point, 3) Returns: pointclouds_pred: (batch_size, num_point, 3)

Provide PLY-formatted metadata for the instance.

Format this element's metadata as it would appear in a PLY header.

Randomly jitter points. jittering is per point. Input: BxNx3 array, original batch of point clouds Return: BxNx3

Make a 2D array from an array of arrays. The `cols' and `dtype' arguments can be omitted if the array is not empty.

Randomly scale the point cloud. Scale is per point cloud. Input: BxNx3 array, original batch of point clouds Return:

read XYZ point cloud from filename PLY file

Randomly perturb the point clouds by small rotations Input: BxNx3 array, original batch of point clouds Return: B

Randomly rotate the point clouds to augument the dataset rotation is per shape based along up direction Input: BxNx3 array,

Randomly shift point cloud. Shift is per point cloud. Input: BxNx3 array, original batch of point clouds Return:

input: Nx3, write points to filename as PLY format.