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svrm/.ipynb_checkpoints/predictor-checkpoint.py
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# Open Source Model Licensed under the Apache License Version 2.0
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# and Other Licenses of the Third-Party Components therein:
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# The below Model in this distribution may have been modified by THL A29 Limited
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# ("Tencent Modifications"). All Tencent Modifications are Copyright (C) 2024 THL A29 Limited.
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# Copyright (C) 2024 THL A29 Limited, a Tencent company. All rights reserved.
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# The below software and/or models in this distribution may have been
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# modified by THL A29 Limited ("Tencent Modifications").
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# All Tencent Modifications are Copyright (C) THL A29 Limited.
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# Hunyuan 3D is licensed under the TENCENT HUNYUAN NON-COMMERCIAL LICENSE AGREEMENT
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# except for the third-party components listed below.
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# Hunyuan 3D does not impose any additional limitations beyond what is outlined
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# in the repsective licenses of these third-party components.
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# Users must comply with all terms and conditions of original licenses of these third-party
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# components and must ensure that the usage of the third party components adheres to
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# all relevant laws and regulations.
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# For avoidance of doubts, Hunyuan 3D means the large language models and
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# their software and algorithms, including trained model weights, parameters (including
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# optimizer states), machine-learning model code, inference-enabling code, training-enabling code,
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# fine-tuning enabling code and other elements of the foregoing made publicly available
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# by Tencent in accordance with TENCENT HUNYUAN COMMUNITY LICENSE AGREEMENT.
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import os
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import math
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import time
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import torch
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import numpy as np
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from tqdm import tqdm
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from PIL import Image, ImageSequence
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from omegaconf import OmegaConf
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from torchvision import transforms
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from safetensors.torch import save_file, load_file
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from .ldm.util import instantiate_from_config
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from .ldm.vis_util import render
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class MV23DPredictor(object):
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def __init__(self, ckpt_path, cfg_path, elevation=15, number_view=60,
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render_size=256, device="cuda:0") -> None:
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self.device = device
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self.elevation = elevation
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self.number_view = number_view
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self.render_size = render_size
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self.elevation_list = [0, 0, 0, 0, 0, 0, 0]
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self.azimuth_list = [0, 60, 120, 180, 240, 300, 0]
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st = time.time()
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self.model = self.init_model(ckpt_path, cfg_path)
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print(f"=====> mv23d model init time: {time.time() - st}")
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self.input_view_transform = transforms.Compose([
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transforms.Resize(504, interpolation=Image.BICUBIC),
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transforms.ToTensor(),
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])
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self.final_input_view_transform = transforms.Normalize((0.485, 0.456, 0.406), (0.229, 0.224, 0.225))
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def init_model(self, ckpt_path, cfg_path):
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config = OmegaConf.load(cfg_path)
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model = instantiate_from_config(config.model)
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weights = load_file("./weights/svrm/svrm.safetensors")
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model.load_state_dict(weights)
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model.to(self.device)
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model = model.eval()
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model.render.half()
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print(f'Load model successfully')
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return model
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def create_camera_to_world_matrix(self, elevation, azimuth, cam_dis=1.5):
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# elevation azimuth are radians
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# Convert elevation and azimuth angles to Cartesian coordinates on a unit sphere
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x = np.cos(elevation) * np.cos(azimuth)
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y = np.cos(elevation) * np.sin(azimuth)
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z = np.sin(elevation)
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# Calculate camera position, target, and up vectors
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camera_pos = np.array([x, y, z]) * cam_dis
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target = np.array([0, 0, 0])
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up = np.array([0, 0, 1])
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# Construct view matrix
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forward = target - camera_pos
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forward /= np.linalg.norm(forward)
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right = np.cross(forward, up)
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right /= np.linalg.norm(right)
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new_up = np.cross(right, forward)
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new_up /= np.linalg.norm(new_up)
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cam2world = np.eye(4)
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cam2world[:3, :3] = np.array([right, new_up, -forward]).T
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cam2world[:3, 3] = camera_pos
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return cam2world
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def refine_mask(self, mask, k=16):
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mask /= 255.0
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boder_mask = (mask >= -math.pi / 2.0 / k + 0.5) & (mask <= math.pi / 2.0 / k + 0.5)
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mask[boder_mask] = 0.5 * np.sin(k * (mask[boder_mask] - 0.5)) + 0.5
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mask[mask < -math.pi / 2.0 / k + 0.5] = 0.0
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mask[mask > math.pi / 2.0 / k + 0.5] = 1.0
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return (mask * 255.0).astype(np.uint8)
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def load_images_and_cameras(self, input_imgs, elevation_list, azimuth_list):
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input_image_list = []
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input_cam_list = []
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for input_view_image, elevation, azimuth in zip(input_imgs, elevation_list, azimuth_list):
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input_view_image = self.input_view_transform(input_view_image)
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input_image_list.append(input_view_image)
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input_view_cam_pos = self.create_camera_to_world_matrix(np.radians(elevation), np.radians(azimuth))
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input_view_cam_intrinsic = np.array([35. / 32, 35. /32, 0.5, 0.5])
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input_view_cam = torch.from_numpy(
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np.concatenate([input_view_cam_pos.reshape(-1), input_view_cam_intrinsic], 0)
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).float()
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input_cam_list.append(input_view_cam)
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pixels_input = torch.stack(input_image_list, dim=0)
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input_images = self.final_input_view_transform(pixels_input)
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input_cams = torch.stack(input_cam_list, dim=0)
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return input_images, input_cams
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def load_data(self, intput_imgs):
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assert (6+1) == len(intput_imgs)
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input_images, input_cams = self.load_images_and_cameras(intput_imgs, self.elevation_list, self.azimuth_list)
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input_cams[-1, :] = 0 # for user input view
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data = {}
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data["input_view"] = input_images.unsqueeze(0).to(self.device) # 1 4 3 512 512
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data["input_view_cam"] = input_cams.unsqueeze(0).to(self.device) # 1 4 20
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return data
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@torch.no_grad()
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def predict(
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self,
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intput_imgs,
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save_dir = "outputs/",
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image_input = None,
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target_face_count = 10000,
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do_texture_mapping = True,
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):
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os.makedirs(save_dir, exist_ok=True)
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print(save_dir)
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with torch.cuda.amp.autocast():
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self.model.export_mesh_with_uv(
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data = self.load_data(intput_imgs),
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out_dir = save_dir,
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target_face_count = target_face_count,
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do_texture_mapping = do_texture_mapping
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)
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