Wwupup

torch.nn.functional.interpolate is unsupport!

1

I meet error when run: `python demo.py -m model.onnx -i imgfile.jpg`  It seems that the latest version don`t support upsample operation. The onnx model in Netron: 

Updated the model weights and the latest model implementation

add Extended-IOU loss implementation

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## Motivation In paper: [A Systematic IoU-Related Method: Beyond Simplified Regression for Better Localization](https://ieeexplore.ieee.org/document/9429909) of TIP2021, we propose a new Extended-IOU loss, which outperforms the commonly used GIOU and DIOU...