This model was trained to detect fish in underwater Grayscale Imagery using the YOLOv8n architecture. The model was developed using semi-unsupervised learning techniques to learn patterns and identify fish without relying on fully labeled datasets.
real time detections on Grayscale(Black-and-White) Underwater Footage
Post-processed video/imagery on Grayscale(Black-and-White) Underwater Footage
Factors
Model Performance
Unsupervised Learning: Flexible pattern recognition without fully annotated datasets, suited for grayscale imagery.
Grayscale Imagery: Trained specifically on black-and-white underwater footage, enhancing performance in this environment.
Model Architecture (YOLOv8n): lightweight and optimized for real-time fish detection in underwater footage.
Training Data: Quality and diversity of the grayscale underwater dataset, split into 80% training and 20% validation.
Training Parameters: Configured with 50 epochs, a 0.001 learning rate, and 416x416 image size for optimal model convergence.
Metrics
Below are the key metrics from the model evaluation on the validation set:
Precision: 0.863
Recall: 0.869
mAP50: 0.936
mAP50-95: 0.856
Training Validation Results
Training and Validation Losses
Training and Validation Losses
Confusion Matrix
Confusion Matrix
Precision-Recall Curve
Precision-Recall Curve
F1 Score Curve
F1 Score Curve
Training Configuration
Model Weights File: yolov8n_fish_trained.pt
Number of Epochs: 50
Learning Rate: 0.001
Batch Size: 16
Image Size: 416x416
Training and Evaluation Data
Dataset: fish_dataset.zip consisting of Grayscale(black-and-white) underwater footage.
Training/Validation Split: The dataset was split into 80% training and 20% validation.
Classes: The model was trained on a single class (fish).
Learning Approach: Unsupervised learning, meaning the model identified patterns in the data without needing detailed annotations for all images.
Deployment
How to Use the Model
To use the trained model, follow these steps:
Load the Model:
python
1from ultralytics import YOLO
23# Load the model4model = YOLO("yolov8n_fish_trained.pt")
Limitations
The model was trained on black-and-white underwater footage, and may not generalize well to color images or videos with different lighting conditions.
The unsupervised learning nature of this model may lead to some incorrect detections, particularly in noisy environments where it may confuse other underwater objects for fish.
Images with complex backgrounds, occlusions, or poor resolution may affect the model's performance.
Additional Notes:
Grayscale Imagery: The model may perform better on grayscale images and might not generalize well to color underwater footage or images with different lighting conditions.
Unsupervised Learning: Since using an unsupervised approach, it's worth noting that this can make the model more flexible but also more prone to errors or misclassifications without annotated data.
Ethical Considerations The unsupervised learning approach could lead to biases in detections, especially in new environments or types of marine life that were not represented in the training dataset. This model should not be used in critical applications without thorough validation to ensure it doesn't miss key detections or produce incorrect results in sensitive scenarios. Consider the potential environmental or societal impact when using the model for marine conservation or research, and ensure that the detections are verified.
Disclaimer
This repository is a scientific product and is not official communication of the National Oceanic and Atmospheric Administration, or the United States Department of Commerce. All NOAA project content is provided on an ‘as is’ basis and the user assumes responsibility for its use. Any claims against the Department of Commerce or Department of Commerce bureaus stemming from the use of this project will be governed by all applicable Federal law. Any reference to specific commercial products, processes, or services by service mark, trademark, manufacturer, or otherwise, does not constitute or imply their endorsement, recommendation or favoring by the Department of Commerce. The Department of Commerce seal and logo, or the seal and logo of a DOC bureau, shall not be used in any manner to imply endorsement of any commercial product or activity by DOC or the United States Government.
