GPU Accelerated Non-rigid ICP for surface registration

Related tags

Deep Learningpytorch-nicp
Overview

GPU Accelerated Non-rigid ICP for surface registration

Introduction

Preivous Non-rigid ICP algorithm is usually implemented on CPU, and needs to solve sparse least square problem, which is time consuming. In this repo, we implement a pytorch version NICP algorithm based on paper Amberg et al. Detailedly, we leverage the AMSGrad to optimize the linear regresssion, and then found nearest points iteratively. Additionally, we smooth the calculated mesh with laplacian smoothness term. With laplacian smoothness term, the wireframe is also more neat.

Quick Start

install

We use python3.8 and cuda10.2 for implementation. The code is tested on Ubuntu 20.04.

  • The pytorch3d cannot be installed directly from pip install pytorch3d, for the installation of pytorch3d, see pytorch3d.
  • For other packages, run
pip install -r requirements.txt
  • For the template face model, currently we use a processed version of BFM face model from 3DMMfitting-pytorch, download the BFM09_model_info.mat from 3DMMfitting-pytorch and put it into the ./BFM folder.
  • For demo, run
python demo_nicp.py

we show demo for NICP mesh2mesh and NICP mesh2pointcloud. We have two param sets for registration:

milestones = set([50, 80, 100, 110, 120, 130, 140])
stiffness_weights = np.array([50, 20, 5, 2, 0.8, 0.5, 0.35, 0.2])
landmark_weights = np.array([5, 2, 0.5, 0, 0, 0, 0, 0])

This param set is used for registration on fine grained mesh

milestones = set([50, 100])
stiffness_weights = np.array([50, 20, 5])
landmark_weights = np.array([50, 20, 5])

This param set is used for registration on noisy point clouds

Templated Model

You can also use your own templated face model with manually specified landmarks.

Todo

Currently we write some batchwise functions, but batchwise NICP is not supported now. We will support batch NICP in further releases.

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Comments
  • Lack of file “BFM09_model_info.mat”

    Lack of file “BFM09_model_info.mat”

    Traceback (most recent call last): File "demo_nicp.py", line 28, in bfm_meshes, bfm_lm_index = load_bfm_model(torch.device('cuda:0')) File "/data/pytorch-nicp/bfm_model.py", line 15, in load_bfm_model bfm_meta_data = loadmat('BFM/BFM09_model_info.mat') File "/root/anaconda3/envs/pytorch3d/lib/python3.8/site-packages/scipy/io/matlab/mio.py", line 224, in loadmat with _open_file_context(file_name, appendmat) as f: File "/root/anaconda3/envs/pytorch3d/lib/python3.8/contextlib.py", line 113, in enter return next(self.gen) File "/root/anaconda3/envs/pytorch3d/lib/python3.8/site-packages/scipy/io/matlab/mio.py", line 17, in _open_file_context f, opened = _open_file(file_like, appendmat, mode) File "/root/anaconda3/envs/pytorch3d/lib/python3.8/site-packages/scipy/io/matlab/mio.py", line 45, in _open_file return open(file_like, mode), True FileNotFoundError: [Errno 2] No such file or directory: 'BFM/BFM09_model_info.mat'

    In 3DMMfitting-pytorch， there are only these files: BFM_exp_idx.mat BFM_front_idx.mat facemodel_info.mat README.md select_vertex_id.mat similarity_Lm3D_all.mat std_exp.txt

    opened by 675492062 2
  • What is the expected time needed for running demo_nicp.py?

    What is the expected time needed for running demo_nicp.py?

    Hello,

    On my computer it seems quite slow to run demo_nicp.py. At least it took more than 1 minutes to get final.obj. Is it correct?

    I ranAMM_NRR for non-rigit ICP registration with two 7000 vertices meshes. It needs ca 1 second with CPU on my computer. With GPU, it might be possible to do the same work in less than 100 ms?

    Thank you!

    opened by 1939938853 0
  • Hi, with landmarks: `landmarks = torch.from_numpy(np.array(landmarks)).to(device).long()`, maybe you can reshape landmarks from torch.Size([1, 1, 68, 2]) to torch.Size([1, 68, 2])

    Hi, with landmarks: `landmarks = torch.from_numpy(np.array(landmarks)).to(device).long()`, maybe you can reshape landmarks from torch.Size([1, 1, 68, 2]) to torch.Size([1, 68, 2])

    Hi, with landmarks: landmarks = torch.from_numpy(np.array(landmarks)).to(device).long(), maybe you can reshape landmarks from torch.Size([1, 1, 68, 2]) to torch.Size([1, 68, 2])

    Originally posted by @wuhaozhe in https://github.com/wuhaozhe/pytorch-nicp/issues/3#issuecomment-971453681 hi！I got output as torch.Size([1, 68, 512, 3]) torch.Size([1, 68, 2]) torch.Size([1, 512, 512, 3]) I think the shape of following tensors are right, but I meet the same problem. lm_vertex = torch.gather(lm_vertex, 2, column_index) RuntimeError: CUDA error: device-side assert triggered

    landmarks = torch.from_numpy(np.array(landmarks)).to(device).long()

row_index = landmarks[:, :, 1].view(landmarks.shape[0], -1)
column_index = landmarks[:, :, 0].view(landmarks.shape[0], -1)
row_index = row_index.unsqueeze(2).unsqueeze(3).expand(landmarks.shape[0], landmarks.shape[1], shape_img.shape[2], shape_img.shape[3])
column_index = column_index.unsqueeze(1).unsqueeze(3).expand(landmarks.shape[0], landmarks.shape[1], landmarks.shape[1], shape_img.shape[3])
print(row_index.shape, landmarks.shape, shape_img.shape)
    opened by alicedingyueming 1
  • RuntimeError

    RuntimeError

    Traceback (most recent call last): File "demo_nicp.py", line 27, in target_lm_index, lm_mask = get_mesh_landmark(norm_meshes, dummy_render) File "/data/pytorch-nicp/landmark.py", line 37, in get_mesh_landmark row_index = row_index.unsqueeze(2).unsqueeze(3).expand(landmarks.shape[0], landmarks.shape[1], shape_img.shape[2], shape_img.shape[3]) RuntimeError: The expanded size of the tensor (1) must match the existing size (2) at non-singleton dimension 1. Target sizes: [1, 1, 512, 3]. Tensor sizes: [1, 2, 1, 1]

    I have already configure the environment，but it seems have some problems in the code.What can I do to solve this problem.

    opened by 675492062 8
Releases(v0.1)
Owner
Haozhe Wu
Research interests in Computer Vision and Machine Learning.
Haozhe Wu
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