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inference_hr.py
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inference_hr.py
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import glob
from diffusers.utils import load_image
import torch
from PIL import Image
import os
import numpy as np
import trimesh
import torchvision
import open3d as o3d
import torch.nn.functional as F
import shutil
from tqdm import tqdm
from src.metrics import chamfer_distance_and_f_score
from scipy.sparse import csr_matrix
import argparse
from diffusers import AutoencoderKL
from src.xray_decoder import AutoencoderKLTemporalDecoder
def get_rays(directions, c2w):
# Rotate ray directions from camera coordinate to the world coordinate
rays_d = directions @ c2w[:3, :3].T # (H, W, 3)
rays_d = rays_d / (np.linalg.norm(rays_d, axis=-1, keepdims=True) + 1e-8)
# The origin of all rays is the camera origin in world coordinate
rays_o = np.broadcast_to(c2w[:3, 3], rays_d.shape) # (H, W, 3)
return rays_o, rays_d
def xray_to_pcd(GenDepths, GenNormals, GenColors):
camera_angle_x = 0.8575560450553894
image_width = GenDepths.shape[-1]
image_height = GenDepths.shape[-2]
fx = 0.5 * image_width / np.tan(0.5 * camera_angle_x)
rays_screen_coords = np.mgrid[0:image_height, 0:image_width].reshape(
2, image_height * image_width).T # [h, w, 2]
grid = rays_screen_coords.reshape(image_height, image_width, 2)
cx = image_width / 2.0
cy = image_height / 2.0
i, j = grid[..., 1], grid[..., 0]
directions = np.stack([(i-cx)/fx, -(j-cy)/fx, -np.ones_like(i)], -1) # (H, W, 3)
c2w = np.eye(4).astype(np.float32)
rays_origins, ray_directions = get_rays(directions, c2w)
rays_origins = rays_origins[None].repeat(GenDepths.shape[0], 0)
ray_directions = ray_directions[None].repeat(GenDepths.shape[0], 0)
GenDepths = GenDepths.transpose(0, 2, 3, 1)
GenNormals = GenNormals.transpose(0, 2, 3, 1)
GenColors = GenColors.transpose(0, 2, 3, 1)
valid_index = GenDepths[..., 0] > 0
rays_origins = rays_origins[valid_index]
ray_directions = ray_directions[valid_index]
GenDepths = GenDepths[valid_index]
normals = GenNormals[valid_index]
colors = GenColors[valid_index]
xyz = rays_origins + ray_directions * GenDepths
return xyz, normals, colors
def load_xray(xray_path):
loaded_data = np.load(xray_path)
loaded_sparse_matrix = csr_matrix((loaded_data['data'], loaded_data['indices'], loaded_data['indptr']), shape=loaded_data['shape'])
original_shape = (16, 1+3+3, 256, 256)
restored_array = loaded_sparse_matrix.toarray().reshape(original_shape)
return restored_array
if __name__ == "__main__":
parser = argparse.ArgumentParser("X-Ray full Inference")
parser.add_argument("--exp_upsampler", type=str, default="Objaverse_XRay_upsampler", help="experiment name")
parser.add_argument("--exp_diffusion", type=str, default="Objaverse_XRay_pretrained", help="experiment name")
args = parser.parse_args()
near = 0.6
far = 1.8
num_frames = 8
exp_upsampler = args.exp_upsampler
exp_diffusion = args.exp_diffusion
if os.path.exists(f"Output/{exp_upsampler}/evaluate"):
shutil.rmtree(f"Output/{exp_upsampler}/evaluate")
os.makedirs(f"Output/{exp_upsampler}/evaluate", exist_ok=True)
vae_image = AutoencoderKL.from_pretrained("madebyollin/sdxl-vae-fp16-fix", torch_dtype=torch.float16).cuda()
image_paths = glob.glob(f"Output/{exp_diffusion}/evaluate/*.png")
os.makedirs(f"Output/{exp_upsampler}/evaluate", exist_ok=True)
progress_bar = tqdm(range(len(image_paths)))
# Get the most recent checkpoint
dirs = os.listdir(os.path.join("Output", exp_upsampler))
dirs = [d for d in dirs if d.startswith("checkpoint")]
dirs = sorted(dirs, key=lambda x: int(x.split("-")[1]))
ckpt_name = dirs[-1]
print("restore from", f"Output/{exp_upsampler}/{ckpt_name}/vae")
vae = AutoencoderKLTemporalDecoder.from_pretrained(f"Output/{exp_upsampler}/{ckpt_name}", subfolder="vae").cuda()
height = 256
width = 256
all_chamfer_distance = []
all_f_score = []
for i in range(len(image_paths)):
image_path = image_paths[i]
uid = os.path.basename(image_path).replace(".png", "")
with torch.no_grad():
xray_path = image_path.replace(".png", ".pt")
xrays = torch.load(xray_path)
xray_lr = xrays.clone().cuda()[None] # [8, 8, H, W]
image = load_image(image_path).resize((width * 2, height * 2), Image.BILINEAR).convert("RGB")
conditional_pixel_values = (torchvision.transforms.ToTensor()(image).unsqueeze(0) * 2 - 1).half().cuda()
conditional_latents = vae_image.encode(conditional_pixel_values).latent_dist.mode().float()
# Concatenate the `conditional_latents` with the `noisy_latents`.
conditional_latents = conditional_latents.unsqueeze(
1).repeat(1, xray_lr.shape[1], 1, 1, 1).float()
xray_input = torch.cat(
[xray_lr, conditional_latents], dim=2)
xray_input = xray_input.flatten(0, 1)
model_pred = vae(xray_input, num_frames=num_frames).sample
outputs = model_pred.reshape(-1, num_frames, *model_pred.shape[1:])[0]
outputs = outputs.clamp(-1, 1) # clamp to [-1, 1]
image.save(f"Output/{exp_upsampler}/evaluate/{uid}.png")
GenDepths = (outputs[:, 0:1] * 0.5 + 0.5) * (far - near) + near
GenHits = (outputs[:, 7:8] > 0).float()
GenDepths[GenHits == 0] = 0
GenDepths[GenDepths <= near] = 0
GenDepths[GenDepths >= far] = 0
GenNormals = F.normalize(outputs[:, 1:4], dim=1)
GenNormals[GenHits.repeat(1, 3, 1, 1) == 0] = 0
GenColors = outputs[:, 4:7] * 0.5 + 0.5
GenColors[GenHits.repeat(1, 3, 1, 1) == 0] = 0
GenDepths = GenDepths.cpu().numpy()
GenNormals = GenNormals.cpu().numpy()
GenColors = GenColors.cpu().numpy()
GenDepths_ori = GenDepths.copy()
for i in range(GenDepths.shape[0]-1):
GenDepths[i+1] = np.where(GenDepths_ori[i+1] < GenDepths_ori[i], 0, GenDepths_ori[i+1])
gen_pts, gen_normals, gen_colors = xray_to_pcd(GenDepths, GenNormals, GenColors)
gen_pts = gen_pts - np.mean(gen_pts, axis=0)
pcd = o3d.geometry.PointCloud()
pcd.points = o3d.utility.Vector3dVector(gen_pts)
pcd.normals = o3d.utility.Vector3dVector(gen_normals)
pcd.colors = o3d.utility.Vector3dVector(gen_colors)
o3d.io.write_point_cloud(f"Output/{exp_upsampler}/evaluate/{uid}_prd.ply", pcd)
shutil.copy(image_path.replace(".png", "_prd.ply"), f"Output/{exp_upsampler}/evaluate/{uid}_lr_prd.ply")
progress_bar.update(1)