Laser Scanner + Photogrammetry for statue seperate components - attached photos

Development World Creation
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1

Hi RC members,

I have a set of 16 high quality(density) scans, circling the statue at both a low and high loop.

The laserscan is registered in an external program, so I am importing as ‘EXACT’. and on the import it is set to colour for alignment. 

I then import my set of 568 photos. 

I’ve attached the images below showing the alignment settings I am using. Which from reading the forums seem to be a commonly used setup for when you need a little bit more from the alignment.

Once aligned there are two separate components. 

The laserscanners built in camera to colour the points I believe is the issue, it is a low quality in-built camera & the statue is quite plain. I don’t normally have alignment issues when doing larger scenes & buildings. 

I also see the #pts: on the laser scanner inputs are low (in the #pts:100’s to 10k) compared to an average of #pts:80000 for the images.

Is there anything I can try? I was thinking I may possibly need more colour difference picked up in the laserscanner and image set. possibly reshooting and adding coloured control markers or other ques so there is more features detected.

  • I want to be able to align the laserscanner and image set without the use of CP’s if possible.

 

Regards,

Josh

 

Laser scanner component

Photogrammetry component

2

Alignment settings + Advanced

3

Hi Josh,

from just a quick glance the sets look fine and should work.

Looking at your settings, I would change:

Max feature reopro error: 2.00 (otherwise too many will be discarded right at the start)

Force component rematch: False  (otherwise all your existing components wiil not be considered, maybe even the geo-referenced alignment of the scans)

Preselector features: 10k (should be enough and otherwise just creates a lot of work)

 

4

Hi Götz,

Just want to say thanks for the quick reply!

I adjusted the settings as you recommended, and It has been a successful alignment of all images and scans!

I’ve read many of your answers and questions through-out my time scouting the RC forums. Thanks for those times and for answering this query. 

Josh

5

Hi Josh,

glad it worked and appreciate your reply!  :slight_smile:

Do you know which setting it was exactly?

6

Hi Götz,

 

Sorry for the late reply, 

 

I quickly tried doing some tests to determine which setting it was, but I couldn’t recreate the problem after I used the settings you suggested. I assume the correct alignment is cached, I tried clearing it but but the components kept aligning, I will set aside some time to test and post back in here soon if I can figure out which setting it was in particular.

 

Thanks again

7

Hi josh,

thanks, but don’t go through too much trouble!

Maybe the next one with the same problem can answer it…  :wink:

8

Hello. I hve similar problem and now trying to solve it.
I have laser scans without information about color (just b/w scan). And I have photos from camera and drone.
However, after trying to aling everything, I get separate components. Separate component for laser scans and few more components for photos.

I think, does RealityCapture can align photos to laser scans that lack of RGB data?