The performance difference between Focus Module and Conv Module

[Coobiw]

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Question

Hello,It's my honor to push this issue here! After read the yolov5*(whatever the model scale).yaml. I find that the Focus Module is replaced by a Conv Module whose in_channels is 3 ,out_channels is 64 and stride is 2. I think this is similar to YOLOv4. So I want to know what this change bring us i.e. the difference between them. Thanks for your reply!

Additional

(0): Conv(
(conv): Conv2d(3, 32, kernel_size=(6, 6), stride=(2, 2), padding=(2, 2), bias=False)
……

but not Focus Module

[github-actions]

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[zhiqwang]

It's equivalent, see #4825 for more details.

[Coobiw]

Thanks for your answer！

[github-actions]

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[glenn-jocher]

@Coobiw you're welcome! If you have any more questions or need further assistance, feel free to ask. We're here to help!