Visualizer always converts images from RGB to BGR format

[ORippler]

Describe the bug

• A clear and concise description of what the bug is.

Visualizer class always converts images from RGB to BGR format, despite the fact that both tensorboard and wandb expect RGB format for the images.

To Reproduce
Steps to reproduce the behavior:

Run

python tools/train.py

with logging to either tensorboard or wandb enabled, inspect the logged images in either tenosrboard or wandb.

Expected behavior

• A clear and concise description of what you expected to happen.

Image-format conversion from RGB to BGR is applied only for cv2-related operations, i.e. Visualizer.show and Visualizer.save

Screenshots

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Hardware and Software Configuration

• OS: [Ubuntu, OD]
• NVIDIA Driver Version [470.57.02]
• CUDA Version [e.g. 11.4]
• CUDNN Version [e.g. v11.4.120]
• OpenVINO Version [Optional e.g. v2021.4.2]

Additional context

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