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Glossary: Computer Vision Beyond the Basics

Preprocessing and postprocessing

Also written: preprocessing, postprocessing

The steps around an exported model that Ultralytics normally hides: before it, letterbox and scale to 0-1; after it, convert box format, pick the best class, threshold, run NMS and undo the letterbox.

Where the book teaches it

Related terms

LetterboxingNon-maximum suppression (NMS)ONNX