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| import numpy as np | |
| import os | |
| import torch | |
| from SMPLX import smplx | |
| import h5py | |
| from SMPLX.visualize_joint2smpl.joints2smpl.src.smplify import SMPLify3D | |
| from tqdm import tqdm | |
| import argparse | |
| class joints2smpl: | |
| def __init__(self, num_frames, device, model_path=None, json_dict=None): | |
| self.smpl_dir = model_path | |
| self.device = device | |
| # self.device = torch.device("cpu") | |
| self.batch_size = num_frames | |
| self.num_joints = 22 # for HumanML3D | |
| self.joint_category = "AMASS" | |
| self.num_smplify_iters = 100 | |
| self.fix_foot = False | |
| smplmodel = smplx.create(self.smpl_dir, model_type="smpl", gender="neutral", ext="pkl", | |
| batch_size=self.batch_size).to(self.device) | |
| # ## --- load the mean pose as original ---- | |
| smpl_mean_file = os.path.join(json_dict["joints2smpl"], "neutral_smpl_mean_params.h5") | |
| file = h5py.File(smpl_mean_file, 'r') | |
| self.init_mean_pose = torch.from_numpy(file['pose'][:]).unsqueeze(0).repeat(self.batch_size, 1).float().to(self.device) | |
| self.init_mean_shape = torch.from_numpy(file['shape'][:]).unsqueeze(0).repeat(self.batch_size, 1).float().to(self.device) | |
| self.cam_trans_zero = torch.Tensor([0.0, 0.0, 0.0]).unsqueeze(0).to(self.device) | |
| # | |
| # # #-------------initialize SMPLify | |
| self.smplify = SMPLify3D(smplxmodel=smplmodel, | |
| batch_size=self.batch_size, | |
| joints_category=self.joint_category, | |
| num_iters=self.num_smplify_iters, | |
| device=self.device) | |
| def npy2smpl(self, npy_path): | |
| out_path = npy_path.replace('.npy', '_rot.npy') | |
| motions = np.load(npy_path, allow_pickle=True)[None][0] | |
| # print_batch('', motions) | |
| n_samples = motions['motion'].shape[0] | |
| all_thetas = [] | |
| for sample_i in tqdm(range(n_samples)): | |
| thetas, _ = self.joint2smpl(motions['motion'][sample_i].transpose(2, 0, 1)) # [nframes, njoints, 3] | |
| all_thetas.append(thetas.cpu().numpy()) | |
| motions['motion'] = np.concatenate(all_thetas, axis=0) | |
| print('motions', motions['motion'].shape) | |
| print(f'Saving [{out_path}]') | |
| np.save(out_path, motions) | |
| exit() | |
| def joint2smpl(self, input_joints, init_params=None): | |
| if len(input_joints.shape) == 2: | |
| input_joints = input_joints.reshape(input_joints.shape[0], -1, 3) | |
| pred_pose = torch.zeros(self.batch_size, 72).to(self.device) | |
| pred_betas = torch.zeros(self.batch_size, 10).to(self.device) | |
| pred_cam_t = torch.zeros(self.batch_size, 3).to(self.device) | |
| keypoints_3d = torch.zeros(self.batch_size, self.num_joints, 3).to(self.device) | |
| # joints3d = input_joints[idx] # *1.2 #scale problem [check first] | |
| keypoints_3d = torch.Tensor(input_joints).to(self.device).float() | |
| root_loc = torch.tensor(keypoints_3d[:, 0:1]) #### N * 1 * 3 | |
| root_loc = root_loc - root_loc[[0], :, :] ### N * 1 * 3 | |
| root_loc = root_loc.squeeze(1).detach().cpu().numpy() | |
| # if idx == 0: | |
| if init_params is None: | |
| pred_betas = self.init_mean_shape | |
| pred_pose = self.init_mean_pose | |
| pred_cam_t = self.cam_trans_zero | |
| else: | |
| pred_betas = init_params['betas'] | |
| pred_pose = init_params['pose'] | |
| pred_cam_t = init_params['cam'] | |
| if self.joint_category == "AMASS": | |
| confidence_input = torch.ones(self.num_joints) | |
| # make sure the foot and ankle | |
| if self.fix_foot == True: | |
| confidence_input[7] = 1.5 | |
| confidence_input[8] = 1.5 | |
| confidence_input[10] = 1.5 | |
| confidence_input[11] = 1.5 | |
| else: | |
| print("Such category not settle down!") | |
| new_opt_vertices, new_opt_joints, new_opt_pose, new_opt_betas, \ | |
| new_opt_cam_t, new_opt_joint_loss = self.smplify( | |
| pred_pose.detach(), | |
| pred_betas.detach(), | |
| pred_cam_t.detach(), | |
| keypoints_3d, | |
| conf_3d=confidence_input.to(self.device), | |
| # seq_ind=idx | |
| ) | |
| thetas = new_opt_pose.reshape(self.batch_size, 24 * 3) | |
| vecs = thetas.detach().cpu().numpy() | |
| return vecs, root_loc | |
| if __name__ == '__main__': | |
| parser = argparse.ArgumentParser() | |
| parser.add_argument("--input_path", type=str, required=True, help='Blender file or dir with blender files') | |
| parser.add_argument("--cuda", type=bool, default=True, help='') | |
| parser.add_argument("--device", type=int, default=0, help='') | |
| params = parser.parse_args() | |
| simplify = joints2smpl(device_id=params.device, cuda=params.cuda) | |
| if os.path.isfile(params.input_path) and params.input_path.endswith('.npy'): | |
| simplify.npy2smpl(params.input_path) | |
| elif os.path.isdir(params.input_path): | |
| files = [os.path.join(params.input_path, f) for f in os.listdir(params.input_path) if f.endswith('.npy')] | |
| for f in files: | |
| simplify.npy2smpl(f) |