Detectron2: Visualizer tutorial

[jas-nat]

Is there any tutorial on how to use visualizer step by step clearly? Because when I want to try to show a picture similar to the balloon dataset, my picture is messed up and it shows all annotations.
The picture is like below

[ppwwyyxx]

The balloon tutorial is a step-by-step tutorial that uses visualizer

[jas-nat]

visualizer = Visualizer(img[:, :, ::-1], metadata=balloon_metadata, scale=0.5)

In that line, what does img[:,:,::-1] do?

[ppwwyyxx]

img[:,:,::-1] is an image. See https://detectron2.readthedocs.io/modules/utils.html#detectron2.utils.visualizer.Visualizer

[RubenS02]

@jas-nat is converts an image [:,:,[BGR]] to [:,:,[RGB]]

[jas-nat]

@jas-nat is converts an image [:,:,[BGR]] to [:,:,[RGB]]

Thank you for the explanation RubenS02. I found the mistake already in my labelling