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AOiW - reconstruction of 3d models from sequence of images

The goal of the project was to tackle the problem of reconstructing 3d models from sequence of images of given object. We implemented two solutions: one using classical method - Structure From Motion and the other using deep neural network - Pix2Vox.

How to prepare data folder for experiments

For experiments to start, you need to make sure your data includes all the necessary data. In data folder there is a file called where_to_download_data.txt, which includes all needed links and describes how you should prepare your data folder. To summarize here how the data folder should look like, here is a description:

├── data
│   ├── mvs_dataset       <- MVS data.
│   │   ├── images        <- Folder for all images of the MVS dataset. They are included in cleaned_images.zip
│   │   ├── point_clouds  <- folder with original and manually corrected ground truths
│   │   ├── results  <- optional downloadable folder with reconstructed models (contains originals and models after correction)
│   │   ├── processed_voxels_pix2vox <- Folder with processed voxels which are needed for Pix2Vox model. They are stored in processed_voxels_pix2vox.zip
│   │   ├──
│   ├── ShapeNet        <- ShapeNet data.
│   │   ├── ShapeNetRendering <- Images for ShapeNet dataset. Included in ShapeNetRendering.tgz
│   │   └── ShapeNetVox32     <- Voxels for objects in ShapeNet dataset. Included in ShapeNetVox32.tgz

How to run experiments for Structure From Motion

Having PYTHONPATH set to the root of the project as well as to the ./src/models/sfm is necessary. Also Docker is required (only for reconstruction). To run all expriments and generate results for SfM on MVS dataset, simply run the following command from the root of the project:

python .\src\models\sfm\all_runner.py 1 128 -r False -c False

This command assumes, that you use already reconstructed and corrected models. If you also want to run reconstruction by yourself, change False to True in -r option. The same applies to correction (-c option), but additionally you are required to pass path to CloudCompare.exe (-p option) - that's the program used for semi-automatic allignment and cleaning of ground_truth and resulting point clouds. I recommend to download already prepared models, to see how the correction should be carried out.

How to run experiments for Pix2Vox

Make sure you have 4 pretrained models of Pix2Vox in models directory. In this directory there is a .txt with links to those models. Here we are also posting these links:

  1. https://gateway.infinitescript.com/?fileName=Pix2Vox-A-ShapeNet.pth - Pix2Vox-A
  2. https://gateway.infinitescript.com/?fileName=Pix2Vox-F-ShapeNet.pth - Pix2Vox-F
  3. https://gateway.infinitescript.com/?fileName=Pix2Vox%2B%2B-A-ShapeNet.pth - Pix2Vox++ A
  4. https://gateway.infinitescript.com/?fileName=Pix2Vox%2B%2B-F-ShapeNet.pth - Pix2Vox++ F

To run training for the new models, run train_pix2vox_models_and_test.sh shell script. This script trains new models and also tests them.

To use the trained models and run only tests, run test_pix2vox_models.sh shell script.

To visualize results generated by testing script, run visualize_pix2vox_results.sh shell script.