CoVR-VidLLM-CVPR25

Description

This repository contains the code for CoVR-VidLLM workshop CVPR-2025.

Please visit our Workshop Page for more details.

The repository structure:

📦 covr
 ┣ 📂 configs                 # hydra config files
 ┣ 📂 src                     # Pytorch datamodules
 ┣ 📂 tools                   # scripts and notebooks
 ┣ 📜 .gitignore
 ┣ 📜 README.md
 ┣ 📜 test.py                 # test script
 ┣ 📜 evaluate_scores.py      # recall score evaluation script

Installation

Create environment

conda create --name covr-env
conda activate covr-env

To install the necessary packages, use requirements.txt file:

python -m pip install -r requirements.txt

The code was tested on Python 3.10 and PyTorch 2.4.

(Optional) Download pre-trained models

To download the checkpoints, run:

bash tools/scripts/download_pretrained_models.sh

Usage

Computing BLIP embeddings

Before evaluating, you will need to compute the BLIP embeddings for the videos/images. To do so, run:

# This will compute the BLIP embeddings for the WebVid-CoVR videos. 
# Note that you can use multiple GPUs with --num_shards and --shard_id
python tools/embs/save_blip_embs_vids.py --video_dir datasets/WebVid/2M/train --todo_ids annotation/webvid-covr/webvid2m-covr_train.csv 

# This will compute the BLIP embeddings for the WebVid-CoVR-Test videos.
python tools/embs/save_blip_embs_vids.py --video_dir datasets/WebVid/8M/train --todo_ids annotation/webvid-covr/webvid8m-covr_test.csv 

# This will compute the BLIP embeddings for the WebVid-CoVR modifications text. Only needed if using the caption retrieval loss (model/loss_terms=si_ti+si_tc).
python tools/embs/save_blip_embs_txts.py annotation/webvid-covr/webvid2m-covr_train.csv datasets/WebVid/2M/blip-vid-embs-large-all

Evaluating

Calculating Query Features

The command to calculate the query feature results for Image/Video + descriptions:

python test.py test=webvid-covr

The command to calculate the query feature description for Image/Video descriptions only:

python test.py test=webvid-covr_text

The results will be saved in a numpy array file query_feat.npy and query_feat_txt_only.npy in the output folder for Image/Video + Description and Descriptions only respectively.

Calculating Recalls for evaluation

To calculate the recalls for the query features results for Image/Video + descriptions, execute the following command:

python evaluate_scores.py evaluate=webvid-covr

And, to calculate the recalls for the query features results for descriptions only, execute the following command:

python evaluate_scores.py evaluate=webvid-covr_text

The recalls will be saved in a json file recalls.json and recalls_txt_only.json in the output folder for Image/Video + description and descriptions only respectively.

The Format of the recalls.json is as following:

{
  "R1": 45.00,
  "R5": 68.40,
  "R10": 78.50,
  "R50": 92.00,
  "meanR3": 63.97,
  "meanR4": 70.97,
  "annotation": "webvid8m-covr_test.csv"
}

Acknowledgements

Based on CoVR, BLIP and lightning-hydra-template.