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# -*- coding: utf-8 -*-
# Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. (MPG) is
# holder of all proprietary rights on this computer program.
# You can only use this computer program if you have closed
# a license agreement with MPG or you get the right to use the computer
# program from someone who is authorized to grant you that right.
# Any use of the computer program without a valid license is prohibited and
# liable to prosecution.
#
# Copyright©2019 Max-Planck-Gesellschaft zur Förderung
# der Wissenschaften e.V. (MPG). acting on behalf of its Max Planck Institute
# for Intelligent Systems. All rights reserved.
#
# Contact: [email protected]
import os.path as osp
import argparse
import numpy as np
import torch
import smplx
def main(model_folder,
model_type='smplx',
ext='npz',
gender='neutral',
plot_joints=False,
num_betas=10,
sample_shape=True,
sample_expression=True,
num_expression_coeffs=10,
plotting_module='pyrender',
use_face_contour=False):
model = smplx.build_layer(
model_folder, model_type=model_type,
gender=gender, use_face_contour=use_face_contour,
num_betas=num_betas,
num_expression_coeffs=num_expression_coeffs,
ext=ext)
print(model)
betas, expression = None, None
if sample_shape:
betas = torch.randn([1, model.num_betas], dtype=torch.float32)
if sample_expression:
expression = torch.randn(
[1, model.num_expression_coeffs], dtype=torch.float32)
output = model(betas=betas, expression=expression,
return_verts=True)
vertices = output.vertices.detach().cpu().numpy().squeeze()
joints = output.joints.detach().cpu().numpy().squeeze()
print('Vertices shape =', vertices.shape)
print('Joints shape =', joints.shape)
if plotting_module == 'pyrender':
import pyrender
import trimesh
vertex_colors = np.ones([vertices.shape[0], 4]) * [0.3, 0.3, 0.3, 0.8]
tri_mesh = trimesh.Trimesh(vertices, model.faces,
vertex_colors=vertex_colors)
mesh = pyrender.Mesh.from_trimesh(tri_mesh)
scene = pyrender.Scene()
scene.add(mesh)
if plot_joints:
sm = trimesh.creation.uv_sphere(radius=0.005)
sm.visual.vertex_colors = [0.9, 0.1, 0.1, 1.0]
tfs = np.tile(np.eye(4), (len(joints), 1, 1))
tfs[:, :3, 3] = joints
joints_pcl = pyrender.Mesh.from_trimesh(sm, poses=tfs)
scene.add(joints_pcl)
pyrender.Viewer(scene, use_raymond_lighting=True)
elif plotting_module == 'matplotlib':
from matplotlib import pyplot as plt
from mpl_toolkits.mplot3d import Axes3D
from mpl_toolkits.mplot3d.art3d import Poly3DCollection
fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')
mesh = Poly3DCollection(vertices[model.faces], alpha=0.1)
face_color = (1.0, 1.0, 0.9)
edge_color = (0, 0, 0)
mesh.set_edgecolor(edge_color)
mesh.set_facecolor(face_color)
ax.add_collection3d(mesh)
ax.scatter(joints[:, 0], joints[:, 1], joints[:, 2], color='r')
if plot_joints:
ax.scatter(joints[:, 0], joints[:, 1], joints[:, 2], alpha=0.1)
plt.show()
elif plotting_module == 'open3d':
import open3d as o3d
mesh = o3d.geometry.TriangleMesh()
mesh.vertices = o3d.utility.Vector3dVector(
vertices)
mesh.triangles = o3d.utility.Vector3iVector(model.faces)
mesh.compute_vertex_normals()
mesh.paint_uniform_color([0.3, 0.3, 0.3])
geometry = [mesh]
if plot_joints:
joints_pcl = o3d.geometry.PointCloud()
joints_pcl.points = o3d.utility.Vector3dVector(joints)
joints_pcl.paint_uniform_color([0.7, 0.3, 0.3])
geometry.append(joints_pcl)
o3d.visualization.draw_geometries(geometry)
else:
raise ValueError('Unknown plotting_module: {}'.format(plotting_module))
if __name__ == '__main__':
parser = argparse.ArgumentParser(description='SMPL-X Demo')
parser.add_argument('--model-folder', required=True, type=str,
help='The path to the model folder')
parser.add_argument('--model-type', default='smplx', type=str,
choices=['smpl', 'smplh', 'smplx', 'mano', 'flame'],
help='The type of model to load')
parser.add_argument('--gender', type=str, default='neutral',
help='The gender of the model')
parser.add_argument('--num-betas', default=10, type=int,
dest='num_betas',
help='Number of shape coefficients.')
parser.add_argument('--num-expression-coeffs', default=10, type=int,
dest='num_expression_coeffs',
help='Number of expression coefficients.')
parser.add_argument('--plotting-module', type=str, default='pyrender',
dest='plotting_module',
choices=['pyrender', 'matplotlib', 'open3d'],
help='The module to use for plotting the result')
parser.add_argument('--ext', type=str, default='npz',
help='Which extension to use for loading')
parser.add_argument('--plot-joints', default=False,
type=lambda arg: arg.lower() in ['true', '1'],
help='The path to the model folder')
parser.add_argument('--sample-shape', default=True,
dest='sample_shape',
type=lambda arg: arg.lower() in ['true', '1'],
help='Sample a random shape')
parser.add_argument('--sample-expression', default=True,
dest='sample_expression',
type=lambda arg: arg.lower() in ['true', '1'],
help='Sample a random expression')
parser.add_argument('--use-face-contour', default=False,
type=lambda arg: arg.lower() in ['true', '1'],
help='Compute the contour of the face')
args = parser.parse_args()
model_folder = osp.expanduser(osp.expandvars(args.model_folder))
model_type = args.model_type
plot_joints = args.plot_joints
use_face_contour = args.use_face_contour
gender = args.gender
ext = args.ext
plotting_module = args.plotting_module
num_betas = args.num_betas
num_expression_coeffs = args.num_expression_coeffs
sample_shape = args.sample_shape
sample_expression = args.sample_expression
main(model_folder, model_type, ext=ext,
gender=gender, plot_joints=plot_joints,
num_betas=num_betas,
num_expression_coeffs=num_expression_coeffs,
sample_shape=sample_shape,
sample_expression=sample_expression,
plotting_module=plotting_module,
use_face_contour=use_face_contour)
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