Read: SC-GS

Notes

The editing feature is based on Embedded deformation for shape manipulation

The transformation of each Gaussian in the entire point cloud is an expaction of the transformations of the K nearest control points.

Play

Environment

(2024-03-11)

Ubuntu 20.04, cuda-11.6

1
2
3
4
5


conda create -n SC-GS python=3.10
conda activate SC-GS
pip install torch==1.12.1+cu116 torchvision==0.13.1+cu116 --extra-index-url https://download.pytorch.org/whl/cu116
# I also change the torch version to cu116 in requirements.txt
pip install -r requirements.txt

If I directly run pip install -r requirements.txt, the following error about pip compiling occurs:

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28


(SC-GS) yi@yi:~/Downloads/SC-GS-comments$ pip install -r requirements.txt
...
Collecting git+https://github.com/facebookresearch/pytorch3d.git (from -r requirements.txt (line 14))
  Cloning https://github.com/facebookresearch/pytorch3d.git to /tmp/pip-req-build-2ndb6zwl
  Running command git clone --filter=blob:none --quiet https://github.com/facebookresearch/pytorch3d.git /tmp/pip-req-build-2ndb6zwl
  Resolved https://github.com/facebookresearch/pytorch3d.git to commit 7566530669203769783c94024c25a39e1744e4ed
  Preparing metadata (setup.py) ... error
  error: subprocess-exited-with-error

  × python setup.py egg_info did not run successfully.
  │ exit code: 1
  ╰─> [6 lines of output]
      Traceback (most recent call last):
        File "<string>", line 2, in <module>
        File "<pip-setuptools-caller>", line 34, in <module>
        File "/tmp/pip-req-build-2ndb6zwl/setup.py", line 15, in <module>
          import torch
      ModuleNotFoundError: No module named 'torch'
      [end of output]

  note: This error originates from a subprocess, and is likely not a problem with pip.
error: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.

Refer issue 10 and issue 15

Compilin Pillow requires: sudo apt-get install libjpeg-dev. Otherwise, error occus:

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11


      The headers or library files could not be found for jpeg,
      a required dependency when compiling Pillow from source.

      Please see the install instructions at:
         https://pillow.readthedocs.io/en/latest/installation.html

  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for Pillow
  Running setup.py clean for Pillow
Failed to build Pillow
ERROR: Could not build wheels for Pillow, which is required to install pyproject.toml-based projects

PIL error: no attribute 'ANTIALIAS'

1
2
3


  File "/home/yi/anaconda3/envs/SC-GS/lib/python3.10/site-packages/torch/utils/tensorboard/summary.py", line 486, in make_image
    image = image.resize((scaled_width, scaled_height), Image.ANTIALIAS)
AttributeError: module 'PIL.Image' has no attribute 'ANTIALIAS'

ChatGPT: The api has changed, the function should be called like:

Didn't try

1
2
3


from PIL import Image, ImageFilter
# ...
image = image.resize((scaled_width, scaled_height), ImageFilter.ANTIALIAS)

This error is solved by reinstalling the conda environment with python=3.8, pip will download the packages compatible (cp) with python 3.8. And Pillow cp38 still have the same api.

Train

Train on 1050Ti (4GB)

1
2
3
4
5
6


# Train with terminal only (for the resolution of 400*400 with best PSNR)
CUDA_VISIBLE_DEVICES=0 python train_gui.py \
--source_path /home/yi/Downloads/Dataset_life/DNeRF_data/jumpingjacks \
--model_path outputs/jumpingjacks --deform_type node --node_num 512 \
--is_blender --eval --gt_alpha_mask_as_scene_mask \
--local_frame --resolution 2 --W 800 --H 800

80000 iterations cost 1:47:24.

Deformation

Once the model has been trained, launch GUI with the output dir (just add --gui):

1
2
3
4
5


CUDA_VISIBLE_DEVICES=0 python train_gui.py \
--source_path /home/yi/Downloads/Dataset_life/DNeRF_data/jumpingjacks \
--model_path outputs/jumpingjacks --deform_type node --node_num 512\
--is_blender --eval --gt_alpha_mask_as_scene_mask \
--local_frame --resolution 2 --W 800 --H 800 --gui

Unlike LBS, the model can be teared intio pieces.

And the deformation may be anti-physical.

After adjusting the poses, clik play to watch animation.

To debug the deformation code, once selected keypoints (A+Left Clik), Pause the debugger first, and then step by step inspect.

Press D + Right-click drag will trigger callback_keypoint_drag
Click Init Graph will tigger callback_animation_initialize to assign the attribute animate_tool by instantiating the class LapDeform

1

dpg.add_mouse_drag_handler(button=dpg.mvMouseButton_Right, callback=callback_keypoint_drag)

The command for eval only change train_gui.py to render.py:

1
2
3
4
5


CUDA_VISIBLE_DEVICES=0 python render.py \
--source_path /home/yi/Downloads/Dataset_life/DNeRF_data/jumpingjacks \
--model_path outputs/jumpingjacks --deform_type node --node_num 512 \
--is_blender --eval --gt_alpha_mask_as_scene_mask \
--local_frame --resolution 2 --W 800 --H 800