metadata

language:
  - en
base_model:
  - Ultralytics/YOLO11
tags:
  - yolo
  - yolo11
  - yolo11n
  - urchin
  - sea
  - marine-detection
pipeline_tag: object-detection

Yolo11n Sea Urchin Detector

Model Details / Overview

This model was trained to detect sea urchins using the YOLO11 architecture. It leverages data from multiple open datasets to identify and locate urchins in various underwater images.

Model Architecture: YOLO11n
Task: Object Detection (Urchin Detection)
Footage Type: Underwater Footage (Color and Grayscale)
Classes: 1 (urchin)

Test Results

Model Weights

The model's weights can be found here | Also available in various formats:

PyTorch (best.pt): Standard format for PyTorch-based applications.
Latest PyTorch Checkpoint (last.pt): The latest checkpoint from training.
ONNX (best.onnx): ForONNX runtime.
TorchScript (best.torchscript)
NCNN (best.torchscript): Efficient for mobile platforms and embedded systems.

Intended Use

Real-time detections on underwater footage
Post-processed video/imagery for detecting sea urchins in underwater environments

Factors

Model Performance

Multi-source Dataset: Trained on datasets that include color and urchin images from various angles, enabling the model to perform effectively across different visual inputs.
Model Architecture (YOLO11n): Lightweight and optimized for real-time urchin detection in underwater footage.
Training Data: The dataset includes a mix of color and grayscale images, split into 70% training, 20% validation, and 10% test data.
Training Parameters: Configured with 50 epochs, a 0.001 learning rate, and 640x640 image size for optimal model convergence.

Datasets

The training data was collected, parsed and organized from open sources:

Roboflow Details:
- Workspace: sakana
- Project: urchins-cjlib
- Version: 1
- License: CC BY 4.0
- URL: https://universe.roboflow.com/sakana/urchins-cjlib/dataset/1

Dataset Composition:

Training Images: 1169
Validation Images: 334
Test Images: 168
Train/Val/Test Split Ratio: 7:2:1

Metrics

Below are the key metrics from the model evaluation on the validation set:

Training Validation Results

Training and Validation Losses

Confusion Matrix

Precision-Recall Curve

F1 Score Curve

Training Configuration

Model Weights File: yolo11n_urchin_trained.pt
Number of Epochs: 50
Learning Rate: 0.001
Batch Size: 32
Image Size: 640x640

Deployment

How to Use the Model

To use the trained model, follow these steps:

Load the Model:

from ultralytics import YOLO

# Load the model
model = YOLO("yolo11n_urchin_trained.pt")

Limitations

The model was trained on a mix of open source images. It may not generalize well to other environments or non-marine scenarios. Additionally, environmental variations, occlusions, or poor lighting may affect performance.

Additional Notes:

Dataset Sources:

Two datasets were combined to improve model robustness, allowing the model to adapt to varying lighting and water conditions. Ethical Considerations:
The detection results should be validated before using them for critical applications. The model’s performance in new environments might vary, and it may have biases if certain types of sea urchins were underrepresented in the training datasets.