Convert yolo11 square images model to a hef that works with rectangular images

General
1

Is there a way to convert a yolo11m.pt (trained on 640x640 images) to onnx and then to hef (using hailomz compile), resulting in a hef that accepts 640x480 images?
I’ve read somewhere to follow these steps but I’m not sure they will work. Can you please confirm or suggest proper way:

yolo export model=best.pt imgsz=640 format=onnx opset=11
then convert onnx to dynamic model
then convert from dynamic to fixed 640x480
onnxruntime.tools.make_dynamic_shape_fixed
then change input shape in yolo.yaml (and also in the yolov11m_nms_config.json?) to 640x480

2

Hi @Thor
Recommended way is to export with the required size in the yolo export command. You can specify imgsz=[640,480] during export so that resulting onnx can take 640x480. Please let us know if you encounter any difficulties.