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Accident Detection Using Dashcam

This repository contains model for predicting vehicle collisions using dashcam footage, developed for the Nexar Dashcam Collision Prediction Challenge. The model achieved a 11th place finish on the leaderboard with a...

Sourcehuggingface.co/jatinmehra/Accident-Detection-using-Dashcam/tree/a36a28966edef57ae4ce972c355c96c141288138
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1.13 GB
Base model
MCG-NJU/videomae-large-finetuned-kinetics
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vRevision a36a289
Updated
Sep 26, 2026
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Hugging Face

Source description

🚗 VideoMAE-2 for Dashcam Collision Prediction

This repository contains model for predicting vehicle collisions using dashcam footage, developed for the Nexar Dashcam Collision Prediction Challenge. The model achieved a 11th place finish on the leaderboard with a score of 0.80 mean Average Precision (mAP)

For Training code - GitHub

🧠 Model Overview

  • Architecture: VideoMAE-2 Large fine-tuned for binary classification (collision/near-miss vs. normal driving).

  • Feature Extraction: Utilized TimeSformer for preprocessing input frames.

  • Input: 16 frames per video, each resized to 224x224 pixels.

  • Output: Probability score indicating the likelihood of a collision or near-miss event.

📁 Dataset

The model was trained on the Nexar Collision Prediction Dataset.

  • 750 non-collision videos

  • 400 collision videos

  • 350 near-miss videos arXiv

Each video is annotated with:

  • Event Type: Collision, near-miss, or normal driving

  • Event Time: Timestamp of the (near-)collision

  • Alert Time: Earliest time the event could be predicted.

For more details, refer to the dataset paper.

🛠️ Preprocessing Pipeline

  1. Frame Extraction: Sampled 16 frames per video, focusing on the interval around the alert time.

  2. Feature Extraction: Applied TimeSformer feature extractor to obtain pixel values.

  3. Data Augmentation: Implemented transformations such as horizontal flip, rotation, color jitter, and resized cropping.

  4. Normalization: Used ImageNet mean and standard deviation for normalization.

🏋️ Training Details

  • Framework: PyTorch with Hugging Face Transformers and Trainer API.

  • Training Configuration:

    • Batch Size: 4

    • Epochs: 15

    • Learning Rate: 3e-5

    • Weight Decay: 0.01

    • Evaluation Strategy: Per epoch

    • Metric for Best Model: Average Precision

  • Hardware: Trained on 2x NVIDIA T4 GPUs (~4.5 hours)

📊 Evaluation Metrics

The model's performance was evaluated using Mean Average Precision (mAP) across different time-to-accident intervals:

  • 500ms

  • 1000ms

  • 1500ms

The final score is the mean of the Average Precision (AP) values at these intervals, emphasizing early and accurate collision predictions

📚 Citation

If you use this model or dataset, please cite:

@misc{nexar2025dashcamcollisionprediction,
  title={Nexar Dashcam Collision Prediction Dataset and Challenge},
  author={Daniel C. Moura and Shizhan Zhu and Orly Zvitia},
  year={2025},
  eprint={2503.03848},
  archivePrefix={arXiv},
  primaryClass={cs.CV},
  url={https://arxiv.org/abs/2503.03848}
}

Sources

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Hugging FacePrimaryVersion a36a28966edef57ae4ce972c355c96c141288138
huggingface.co/jatinmehra/Accident-Detection-using-Dashcam/tree/a36a28966edef57ae4ce972c355c96c141288138

Verified Aug 28

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Source excerpts

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ReadmeAug 28huggingface.co/jatinmehra/Accident-Detection-using-Dashcam

--- license: mit metrics: - precision base_model: - MCG-NJU/videomae-large-finetuned-kinetics pipeline_tag: video-classification library_name: transformers new_version: jatinmehra/Accident-Detection-using-Dashcam datasets: - nexar-ai/nexar_collision_prediction tags: - vision --- # 🚗 VideoMAE-2 for Dashcam Collision Prediction This repository contains model for predicting vehicle collisions using dashcam footage, developed for the [Nexar Dashcam Collision Prediction Challenge](https://www.kaggle.com/competitions/nexar-collision-prediction). The model achieved a **11th place** finish on the leaderboard with a score of **0.80** mean Average Precision (mAP) For Training code - [GitHub](https://github.com/Jatin-Mehra119/-Nexar-Dashcam-Crash-Prediction-Challenge) ---------- ## 🧠 Model Overview - **Architecture**: [VideoMAE-2 Large](https://huggingface.co/MCG-NJU/videomae-large-finetuned-kinetics) fine-tuned for binary classification (collision/near-miss vs. normal driving). - **Feature Extraction**: Utilized [TimeSformer](https://huggingface.co/facebook/timesformer-base-finetuned-k400) for preprocessing input frames. - **Input**: 16 frames per video, each resized to 224x224 pixels. - **Output**: Probability score indicating the likelihood of a collision or near-miss event. ---------- ## 📁 Dataset The model was trained on the [Nexar Collision Prediction Dataset](https://huggingface.co/datasets/nexar-ai/nexar_collision_prediction). - 750 non-collision videos - 400 collision videos - 350 near-miss videos [arXiv](https://arxiv.org/html/2503.03848v1?utm_source=chatgpt.com) Each video is annotated with: - **Event Type**: Collision, near-miss, or normal driving - **Event Time**: Timestamp of the (near-)collision - **Alert Time**: Earliest time the event could be predicted. For more details, refer to the [dataset paper](https://arxiv.org/abs/2503.03848). ---------- ## 🛠️ Preprocessing Pipeline 1. **Frame Extraction**: Sampled 16 frames per video, focusing on the interval around the alert time. 2. **Feature Extraction**: Applied TimeSformer feature extractor to obtain pixel values. 3. **Data Augmentation**: Implemented transformations such as horizontal flip, rotation, color jitter, and resized cropping. 4. **Normalization**: Used ImageNet mean and standard deviation for normalization. ---------- ## 🏋️ Training Details - **Framework**:...

NoteAug 28huggingface.co/jatinmehra/Accident-Detection-using-Dashcam

Source context: 122 downloads · 1 likes · Pipeline video-classification · Library transformers · Repo jatinmehra/Accident-Detection-using-Dashcam