Pytorch3d: Errors in Rendering

[shersoni610]

Hello,

I installed Python3.6 when things did not work with 3.7 and 3.8. Now I get the following errors:

Copyright (c) Facebook, Inc. and its affiliates. All rights reserved.

Camera position optimization using differentiable rendering
In this tutorial we will learn the [x, y, z] position of a camera given a reference image using differentiable rendering.

We will first initialize a renderer with a starting position for the camera. We will then use this to generate an image, compute a loss with the reference image, and finally backpropagate through the entire pipeline to update the position of the camera.

This tutorial shows how to:

load a mesh from an .obj file
initialize a Camera, Shader and Renderer,
render a mesh
set up an optimization loop with a loss function and optimizer
Set up and imports
import os
import torch
import numpy as np
from tqdm import tqdm_notebook
import imageio
import torch.nn as nn
import torch.nn.functional as F
import matplotlib.pyplot as plt
from skimage import img_as_ubyte
​

io utils

from pytorch3d.io import load_obj
​

datastructures

from pytorch3d.structures import Meshes, Textures
​

3D transformations functions

from pytorch3d.transforms import Rotate, Translate
​

rendering components

from pytorch3d.renderer import (
OpenGLPerspectiveCameras, look_at_view_transform, look_at_rotation,
RasterizationSettings, MeshRenderer, MeshRasterizer, BlendParams,
SilhouetteShader, PhongShader, PointLights

)

ModuleNotFoundError Traceback (most recent call last)
in
19
20 # rendering components
---> 21 from pytorch3d.renderer import (
22 OpenGLPerspectiveCameras, look_at_view_transform, look_at_rotation,
23 RasterizationSettings, MeshRenderer, MeshRasterizer, BlendParams,

~/Disk/Software/Anaconda3/envs/pytorch3d/lib/python3.6/site-packages/pytorch3d/renderer/__init__.py in
17 from .lighting import DirectionalLights, PointLights, diffuse, specular
18 from .materials import Materials
---> 19 from .mesh import (
20 GouradShader,
21 MeshRasterizer,

~/Disk/Software/Anaconda3/envs/pytorch3d/lib/python3.6/site-packages/pytorch3d/renderer/mesh/__init__.py in
2
3 from .rasterize_meshes import rasterize_meshes
----> 4 from .rasterizer import MeshRasterizer, RasterizationSettings
5 from .renderer import MeshRenderer
6 from .shader import (

~/Disk/Software/Anaconda3/envs/pytorch3d/lib/python3.6/site-packages/pytorch3d/renderer/mesh/rasterizer.py in
3
4
----> 5 from dataclasses import dataclass
6 from typing import NamedTuple, Optional
7 import torch

ModuleNotFoundError: No module named 'dataclasses'

[bottler]

This is a known problem with our release not being compatible with python 3.6. We use a python feature which doesn't exist there. This is fixed in the version on github, and we hope to have a full release soon.
For the moment, as a temporary solution, you can try overwriting the file ~/Disk/Software/Anaconda3/envs/pytorch3d/lib/python3.6/site-packages/pytorch3d/renderer/mesh/rasterizer.py with the text at https://raw.githubusercontent.com/facebookresearch/pytorch3d/533887a18885c244d89b292036e167d668736124/pytorch3d/renderer/mesh/rasterizer.py

[nikhilaravi]

Are you running the notebook locally? What was not working with Python 3.7? As mentioned, dataclasses is available in Python 3.7 - see #31 which is about the same issue.

[bottler]

OP's issue in other pythons is in #47. It seems that pytorch itself would not install.

[shpotes]

You can also install dataclasses in python 3.6 and fix the version incompatibility https://pypi.org/project/dataclasses/

[nikhilaravi]

@shersoni610 were you able to resolve this problem? If so, please close this issue.

[shersoni610]

how can I close it?

On Sun, Feb 23, 2020 at 10:26 PM Nikhila Ravi [e-mail]
wrote:

@shersoni610 https://github.com/shersoni610 were you able to resolve
this problem? If so, please close this issue.

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