Ability to display RawImage type messages with custom channels

[a7g4]

I have a use case where I have an image with 3 uint16 channels. Currently, there's no way to represent this as a foxglove/RawImage and I don't want to resort to using foxglove/CompressedImage.

I was thinking writing an extension that would support a new message type with a format similar to foxglove/Pointcloud which has a fields attribute describing the format of the pixel data in a more generic way that the fixed options in foxglove/RawImage.

Before I start this, I wanted to ask:

• Does anyone else have a similar use case or already done this?
• Is this something that is worth building into lichtblick?
• Is there any interest in maintaining a set of common message types independent of the foxglove ones?