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Yolo11l model conversion to onnx

15

### Search before asking - [x] I have searched the HUB [issues](https://github.com/ultralytics/hub/issues) and [discussions](https://github.com/ultralytics/hub/discussions) and found no similar questions. ### Question Dear reader, I am an employee of Simsonar Oy,...

onnx inference & letterboxing

7

### Search before asking - [x] I have searched the Ultralytics YOLO [issues](https://github.com/ultralytics/ultralytics/issues) and [discussions](https://github.com/orgs/ultralytics/discussions) and found no similar questions. ### Question Is explicit letterboxing necessary or recommended in inference...