Having some doubts for build_target

[d5423197]

Hello there,

After learning your code, I still have some doubts.
If one label has a chance to appear in each layer(13 13, 26 26, 52 52) and many anchors.
I am seeing that the loss will be added for each layer. I don't know the reason behind this.

If there is a big object which is better to be handled for grid 13 by 13. But it may also become a target in another layer?

Thanks,
ZD

[d5423197]

Some other implementation for yolov3 would find the best anchor for each true box. Is there any gap I am having? I can understand that each true box would be assigned by one best anchor from one grid, but I could not understand the implementation that one true box to many anchors from different layers.