Cyrus

You can do it with Bentley Microstation v8i SS3 + Descartes (fresh version). I didn't try it myself though - just watched video.

I think, there is a way to make good-looking surface via TerraModel (TerraSolid). If you are still at it - i could help (with advise or by making some sample of your data).

Hello, prv. Mihai! You should use "extract colors from images" command from project -> tools. But you need to make a project first and import some data into it. Do not forget to check "store color values" in project options and make sure you are using appropriate data storage format. Once coloured, points could be exported via macro; as XYZRGB, i.e. And - you may use raw images (non-rectified) with external orientation to make more accurate colouring on elevated objects. Forgot to mention - it is TerraScan.