Colour transfer in a cloud group

[Michel]

Hello everyone,

I'm currently working on a scan of a building. I have clouds with colour and intensity and others with intensity only in the same area. I was wondering if it would be possible to transfer the colours from the RGB cloud to the intensity only clouds to create a homogeneous rendering.

The idea would be to look at the neighbourhood of each point with no colour to determine one by interpolation. Then it's a question of type: linear, bilinear, etc. It depends on the number of neighbours taken into account.

[daniel]

Well, if the buildings have similar structures, you could roughly register a colored building with a non-colored one, and then transfer the color with interpolation?

[Michel]

On paper, yes, but here I don't want to create a shape, I'm just using scans. Here all the scans are georeferenced, so I was wondering if we could interpolate a colour with the neighbouring points. We'd then have an 'artificial' colour for the clouds with only one intensity at the origin.

[daniel]

Well, you have a method that does more or less that (https://www.cloudcompare.org/doc/wiki/i ... her_entity). But I'm not sure what it will look like or how you can make it work to fulfill your needs...