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import os
import imageio
import numpy as np
import torch
import rembg
from PIL import Image
from torchvision.transforms import v2
from pytorch_lightning import seed_everything
from omegaconf import OmegaConf
from einops import rearrange, repeat
from tqdm import tqdm
from diffusers import DiffusionPipeline, EulerAncestralDiscreteScheduler
from src.utils.train_util import instantiate_from_config
from src.utils.camera_util import (
FOV_to_intrinsics,
get_zero123plus_input_cameras,
get_circular_camera_poses,
)
from src.utils.mesh_util import save_obj, save_glb
from src.utils.infer_util import remove_background, resize_foreground, images_to_video
import tempfile
from functools import partial
from huggingface_hub import hf_hub_download
import gradio as gr
import shutil
import spaces
def get_render_cameras(batch_size=1, M=120, radius=2.5, elevation=10.0, is_flexicubes=False):
"""
Get the rendering camera parameters.
"""
c2ws = get_circular_camera_poses(M=M, radius=radius, elevation=elevation)
if is_flexicubes:
cameras = torch.linalg.inv(c2ws)
cameras = cameras.unsqueeze(0).repeat(batch_size, 1, 1, 1)
else:
extrinsics = c2ws.flatten(-2)
intrinsics = FOV_to_intrinsics(50.0).unsqueeze(0).repeat(M, 1, 1).float().flatten(-2)
cameras = torch.cat([extrinsics, intrinsics], dim=-1)
cameras = cameras.unsqueeze(0).repeat(batch_size, 1, 1)
return cameras
import shutil
def find_cuda():
# Check if CUDA_HOME or CUDA_PATH environment variables are set
cuda_home = os.environ.get('CUDA_HOME') or os.environ.get('CUDA_PATH')
if cuda_home and os.path.exists(cuda_home):
return cuda_home
# Search for the nvcc executable in the system's PATH
nvcc_path = shutil.which('nvcc')
if nvcc_path:
# Remove the 'bin/nvcc' part to get the CUDA installation path
cuda_path = os.path.dirname(os.path.dirname(nvcc_path))
return cuda_path
return None
def check_input_image(input_image):
if input_image is None:
raise gr.Error("No image uploaded!")
def preprocess(input_image, do_remove_background):
rembg_session = rembg.new_session() if do_remove_background else None
if do_remove_background:
input_image = remove_background(input_image, rembg_session)
input_image = resize_foreground(input_image, 0.85)
return input_image
@spaces.GPU
def generate_mvs(input_image, sample_steps, sample_seed):
seed_everything(sample_seed)
# sampling
z123_image = pipeline(
input_image,
num_inference_steps=sample_steps
).images[0]
show_image = np.asarray(z123_image, dtype=np.uint8)
show_image = torch.from_numpy(show_image) # (960, 640, 3)
show_image = rearrange(show_image, '(n h) (m w) c -> (n m) h w c', n=3, m=2)
show_image = rearrange(show_image, '(n m) h w c -> (n h) (m w) c', n=2, m=3)
show_image = Image.fromarray(show_image.numpy())
return z123_image, show_image
@spaces.GPU
def make3d(images):
global model
if IS_FLEXICUBES:
model.init_flexicubes_geometry(device, use_renderer=False)
model = model.eval()
images = np.asarray(images, dtype=np.float32) / 255.0
images = torch.from_numpy(images).permute(2, 0, 1).contiguous().float() # (3, 960, 640)
images = rearrange(images, 'c (n h) (m w) -> (n m) c h w', n=3, m=2) # (6, 3, 320, 320)
input_cameras = get_zero123plus_input_cameras(batch_size=1, radius=4.0).to(device)
render_cameras = get_render_cameras(batch_size=1, radius=2.5, is_flexicubes=IS_FLEXICUBES).to(device)
images = images.unsqueeze(0).to(device)
images = v2.functional.resize(images, (320, 320), interpolation=3, antialias=True).clamp(0, 1)
mesh_fpath = tempfile.NamedTemporaryFile(suffix=f".obj", delete=False).name
print(mesh_fpath)
mesh_basename = os.path.basename(mesh_fpath).split('.')[0]
mesh_dirname = os.path.dirname(mesh_fpath)
video_fpath = os.path.join(mesh_dirname, f"{mesh_basename}.mp4")
mesh_glb_fpath = os.path.join(mesh_dirname, f"{mesh_basename}.glb")
with torch.no_grad():
# get triplane
planes = model.forward_planes(images, input_cameras)
# # get video
# chunk_size = 20 if IS_FLEXICUBES else 1
# render_size = 384
# frames = []
# for i in tqdm(range(0, render_cameras.shape[1], chunk_size)):
# if IS_FLEXICUBES:
# frame = model.forward_geometry(
# planes,
# render_cameras[:, i:i+chunk_size],
# render_size=render_size,
# )['img']
# else:
# frame = model.synthesizer(
# planes,
# cameras=render_cameras[:, i:i+chunk_size],
# render_size=render_size,
# )['images_rgb']
# frames.append(frame)
# frames = torch.cat(frames, dim=1)
# images_to_video(
# frames[0],
# video_fpath,
# fps=30,
# )
# print(f"Video saved to {video_fpath}")
# get mesh
mesh_out = model.extract_mesh(
planes,
use_texture_map=False,
**infer_config,
)
vertices, faces, vertex_colors = mesh_out
vertices = vertices[:, [1, 2, 0]]
save_glb(vertices, faces, vertex_colors, mesh_glb_fpath)
save_obj(vertices, faces, vertex_colors, mesh_fpath)
print(f"Mesh saved to {mesh_fpath}")
return mesh_fpath, mesh_glb_fpath
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