How does laserscanning work? -Student who wants to learn

[94jerdaw]

Hello!

I'm reviewing laserscanning (by own choice, based on curiosity) as a project in school, which weighs pretty heavily on my grades. Could anyone explain how this works in basics, or maybe a bit more thorough?
All the things I know so far are not facts, simply guesses and assumptions. All I can think of is that the camera reads "depth" by calculating how much the laser-line differs from not having any object infront at all. I don't know how it actually works, but I'd really like to know.

Regards,

Dawid Jernström

[Sven]

Hello Dawid,

Your assumption is not really correct.

You can find an explanation in our paper: http://www.cs.tu-bs.de/rob/literatur/do ... z_dagm.pdf

The math is basically: analytical geometry in 3D Euclidean Space . We have 3D planes (the laser light, and the two background panels) and some rays (view directions from the camera) in 3D space.

Hope this helps...
Sven

[94jerdaw]

Hello Sven!

This is extremely helpful of you, thanks! I've been really curious to see how this works, and now I can learn it once and for all. Would feel pretty strange to talk about it if I don't know what it does myself

Once again, thank you!


Dawid