Cut Out
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Cutout, also first seen in YOLOv4.
Cutout simulates occlusion by adding randomly generated black boxes on top of your images.
This does two things:
It makes your model do better detecting objects that are occluded (located) behind other objects.
It encourages your model to learn more distinguishing features about each class of object.
For example, if you're trying to detect American flags, your model may hone in on the stars. By covering up the stars in some of the images, you force it to also learn about the stripes. And thus, its performance in detecting American flags does much better when they are flapping in the wind.
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