we have a slightly more advanced version still under development - which I cannot share here unfortunatelly.
However we have put our internal object detection project on hold for now.
Whats your use case?
Regarding the annotation format: yolo uses <object-class> <x> <y> <width> <height> syntax to describe objects. This should be fairly easy to create based on the example above. Source: https://towardsdatascience.com/image-data-labelling-and-annotation-everything-you-need-to-know-86ede6c684b1
We are doing some contract work specialized on anvil - if you have a need there just drop me a message.
- Mark