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JDSobek / MedYOLO

A 3D bounding box detection model for medical data.
GNU Affero General Public License v3.0
25 stars 6 forks source link

Label format about Center coordinates #13

Closed Dana136484 closed 2 months ago

Dana136484 commented 3 months ago

Hello, sorry to bother you. In README: Center coordinates should fall between -0.5 and 1.5, I just know box coordinates can be in normalized zxydwh format from 0 to 1. So how could I process label(box coordinates) to let the centre coordinates fall between -0.5 and 1.5? Thank you! 屏幕截图 2024-04-11 161432

JDSobek commented 3 months ago

Sorry if I misunderstand your question, but coordinates between 0 and 1 are also between -0.5 and 1.5.

I think the outer limits extend beyond 0 and 1 out to -0.5 and 1.5 so the original 2D framework can handle detected objects that are partially/mostly out of frame. It's allowed as a natural consequence of the formula used to convert the model's output into normalized coordinates, so there wasn't a downside to keeping that functionality in 3D. I don't know much about ultrasound, but that might be a modality where it could be useful.