by Gael Colas, graduate student from Stanford University.

This is my final project for the CS231n: "Convolutional Neural Networks for Visual Recognition" class at Stanford (2019). Our teachers were Pr. Fei-Fei Li, Pr. Justin Johnson and Pr. Serena Yeung.

Language: Python (PyTorch)

Goal: automatically assess the level of a bouldering route.

This project presents the first attempt at using a Convolutional Neural Network to classify bouldering routes from their visual representations.

More details about the project, the data and the models can be found by reading the report and the poster located at the root: "cs231n_final-report.pdf" and "cs231n_poster.pdf".

Run: python train.py --name <model_name>

You can either use one of the CNN models in "models/CNN_models", or create your custom model and add its name in "train.py" and "test.py".

If you want to change the parameters of the training process, please see: "args.py".

The training regularly send information to TensorBoard. To start TensorBoard, run the following command from the root directory: tensorboard --logdir save --port 5678

If you are training on your local machine, now open http://localhost:5678/ in your browser.

If you are training on a remote machine, then run the following command on your local machine:

ssh -i <path-to-ssh-private-key> -N -f -L localhost:1234:localhost:5678 <user>@<remote>

Here <user>@<remote> is the address that you ssh to for your remote machine.

Then on your local machine, open http://localhost:1234/ in your browser.

You should see TensorBoard load with plots of the loss (NLL), Accuracy (Acc), Mean Absolute Error (MAE), and F1-score (F1) for both train and dev sets.

The dev plots may take some time to appear because they are logged less frequently than the train plots.

To create the environment with all the necessary packages, go at the root of the repository and run: conda env create -f environment.yml

To activate the environment: conda activate deepclimb

If you want to use Jupyter notebooks on a remote machine (VM), you need to do this one time set-up. After you SSH into the VM for the first time, you need to run the following commands in your home directory:

cd DeepClimb/
chmod +x ./setup.sh
./setup.sh

You will be asked to set up a password for your Jupyter notebook.

Then you will be able to access your VM Jupyter notebooks from your local machine. In your browser, go to:

<VM-ip-address>:8888

Folder: "data/raw"

The data has been already scrapped from moonboard.com. It took around 15 hours. Scraping data: 26/04/2019.

If you want to update the scraping or scrap a different dataset.

• modify "data/scraper.py" to handle the modifications ;
• download the "selenium" extension corresponding to your browser (for Chrome) ;
• create a "moonboard.com" account and create a text file "data/credentials.txt" with your login information ;
• run: python scraper.py < credentials.txt in the folder "data".

Tutorial on how to use Selenium to scrap JS-Rendered pages.

Selenium documentation.

Run: python setup.py

It will preprocess and split the scraped data files, for each version of the MoonBoard individually (2016 and 2017).

The script splits the dataset into train/validation/test in the proportion 80%/20%/20%. The split is random but preserve the class distribution in each split. The seed used in the split is fixed to give the same split at every run.

The scrapped data is preprocessed into both the binary (.npy files) and the image (.jpg files) representation of the routes. The same split is used for both representations.

The split data can be found in "data/binary" and "data/image".