SoleTruth

Shoeprint Image Retrieval and Crime Scene Shoeprint Image Linking

This project uses Convolutional Neural Networks (CNN) and normalized cross-correlation along with ViTs to retrieve and link shoeprint images from crime scenes.

Note

Note: Make sure you are using Git-LFS. To do so just run the following command:

git lfs install

And to track any file using LFS use the following command:

git-lfs track <file-name>

Setup

1. Clone the repository.
2. Install the required dependencies using pip install -r requirements.txt.
3. Ensure you have the necessary dataset from the links given below.

Usage

Dataset

You can downlaod the dataset that was used to fine tune the ViT model. The dataset used to create the embeddings is present in the directory dataset. The actual contents can be found here

Training the Model

There are mainly two models that are being trained using the code in this repository: msn.ipynb and vit-test.ipynb. The ViTMSN model is fine-tuned on the dataset mentioned above.

Testing the Model

Use the test.ipynb notebook to test the model with new images. Change the variable pretrained_model_name to the desired model.

Using the Retreival Code

The code mentioned the directory retrieval contains the vector embedding implementation. ResNet-RetrievalTest.ipynb contains the code for using embeddings generated using the ResNet-50 model while ViTRestrievalTest.ipynb contains the code for using the embeddings generated using a Vision Transformers (un-fine-tuned).

The vector dataabase is created on the following dataset

Data-information.xlsx contains the mapping for the Shoe make and models.

Given below is the code for retrieving images based on ViTs

Example

# Example code to test the model
test  = [Image.open("../patch.png").convert("RGB")]

try:
    test_inputs = processor(test, return_tensors="pt")
    test_outputs = model(**test_inputs)
except Exception as e:
    print(e)
embeddings = test_outputs.last_hidden_state[:, 0, :]  # Take CLS token embedding

# Convert to list
test_embeddings = embeddings.detach().numpy().tolist()
search_result = qclient.query_points("shoeprints_part1", query=test_embeddings[0])
return_retrived_image(search_result)

License

This project is licensed under the MIT License.