Parameter fusion

[znmzdx-zrh]

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Question

How to integrate some parameters from imported external modules into the entire YOLOv8 model for joint training?I want to introduce some filters as a module into the YOLOv8 model to enhance images. How can I merge the parameters inside the filters into the trainable parameter list of YOLOv8 for joint training and updating?Thank you for help

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[github-actions]

👋 Hello @znmzdx-zrh, thank you for your interest in Ultralytics YOLOv8 🚀! We recommend a visit to the Docs for new users where you can find many Python and CLI usage examples and where many of the most common questions may already be answered.

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Pip install the ultralytics package including all requirements in a Python>=3.8 environment with PyTorch>=1.8.

pip install ultralytics

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[glenn-jocher]

To integrate external module parameters into YOLOv8 for joint training, you can modify the model's architecture to include your custom module. Here’s a brief example using PyTorch:

import torch
import torch.nn as nn
from ultralytics import YOLO

class CustomFilterModule(nn.Module):
    def __init__(self):
        super(CustomFilterModule, self).__init__()
        # Define your filters here, e.g., a convolutional layer
        self.conv = nn.Conv2d(in_channels=3, out_channels=3, kernel_size=3, padding=1)

    def forward(self, x):
        # Apply your filters
        return self.conv(x)

# Load your YOLOv8 model
model = YOLO('yolov8n.pt')

# Add your custom filter module before the YOLOv8 model
class CustomYOLO(nn.Module):
    def __init__(self, yolo_model, filter_module):
        super(CustomYOLO, self).__init__()
        self.filter = filter_module
        self.yolo = yolo_model

    def forward(self, x):
        x = self.filter(x)
        return self.yolo(x)

# Combine them
custom_model = CustomYOLO(model, CustomFilterModule())

# Now custom_model can be trained with both the filter and YOLOv8 parameters being updated

This setup allows the parameters of both the custom filter and the YOLOv8 model to be updated during training. Adjust the CustomFilterModule to include your specific filters and integrate it accordingly.

[znmzdx-zrh]

@glenn-jocher I really appreciate your response, and I am currently trying out the solution you proposed. Thank you very much

[glenn-jocher]

You're welcome! If you have any more questions or need further assistance as you implement the solution, feel free to reach out. Happy coding! 😊

[github-actions]

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