Hi,
I have an urgent request, the option lock pose for continue dont work the way it should. I am trying to lock a lidar scan, and then align images on top of it, but the new alignement shift the model location even when using the lock pose for continue. I am using 20 E57 and 60 images. The thing is that on a test project I have done before with 3 E57 and 15 images, and nothing moved. I tried both project doing the same thing, on 1.3 and 1.4 but I keep getting the test project to work, but the reel project not working and moving location. (I tried a lot of time creating each project from scratch, and tried playing with a lot of options). For the test project working, it only works when the lidar absolute pose is set to locked pose, and then after aligned, with lock pose for continue on.
Thanks in advance for any help
Maxime
Hi Maxime,
lock pose for continue setting lock only the relative pose of the cameras, not the absolute one. Also, it is not necessary to set for the laser scans. What are your laser scan import settings? Are you using georeferenced laser scans?
What will happen, when you use the working option as for test dataset for the real one?
Are you using georeferenced images? Are you using control points to merge the datasets?
Hi Otrhan,
Sorry for the time to answer. I was busy with this project and I just aligned it manualy with Houdini. But I am still interresed to know if there is something possible in this case. For the lidar import option I keep them default : Unregistered or Exact(it changed nothing from what I tested, because my scans are already Aligned in Faro Scene), Color, Noise Free, With original files. My scan and Images aren’t georenferenced. I was doing the same thing and the options were the same in both my test project and my project. I do not use Control Points. In my case it was a problem because I need to keep the same exact pivot for each mesh. I used 1 lidar scan, and on top I did 2 photogrametry with different lightings, and on the first lighting the focusing parts were not the same as the other lighting, also I need to mesh with photos as on closeup it is much more detailed than laser scan.
I’m having the same Issue. I tried these setting and still no luck. The Drone images will not align or merge with the Lidar.
I had a similar Issue with another project and eventually got the Lidar and drone to align. But I’m not sure what procedures I took to get it to work.
Hello @armada_studios,
can you please also share some print screen of your project? If I understand it correctly, there was also the issue with merging the components? In that case you need to have georeferenced data or you need to use the control points to merge the components. Automatic merging of laser data and images is quite rare, as it need a perfect data overlap.
As you are using the already aligned data, you should import the laser scan as Exact, Georeferenced, Local.
Can you also check the workflow mentioned in this post: Coordinates Coordinates Coordinates - #16 by OndrejTrhan?
Were you using just Lock pose for continue settings or also the Absolute pose was set as Locked?
About merging component, I do not use this option, because my dataset align well itself. In my case lidar and photog align with no problem, and without the use of control points. Also I dont have goereferenced data for the use I have. I am using Faro lidar, and a DSLR hand held. I tried lock pose for continue with and without Absolue Pose on Locked. But neither them worked. About screenshots of the project I’ll try to recreate one if I have the time, and post it soon, but I can’t share the original one as it is under NDA.
As you have already aligned scans, they are in some local coordinate system, so therefore you can use that during laser scan import.
For laser scans it is not necessary to use Lock pose for continue, as this is done by the import settings (and it lock only the relative pose, not the absolute one).
The absolute pose Locked option should work without the position change.
With absolute pose set to this for Lidar :
sry i need to do several post, because i can embed only 1 media
I get this component for only lidar :
And the component created with lidar and photos :
After all of this i get a slide between component Lidar only and Lidar+Photog :
you can see it’s not that big, but it’s moving.
Hi, thanks for the print screens.
Can you check the values of the prior pose and registration pose for one selected LSP?
Are also these coordinates changed after the laser+image alignment? If so, what are your alignment settings for Use camera priors for georeferencing?
In RealityCapture are used various coordinate systems. The one visible in 3D view is the grid system. After adding the images into the component, it could be slightly bigger |(as there are more features) and RealityCapture is placing the sparse point cloud approximatively to the centre of the grid. Therefore it can see to be moved. But if the coordinates are not changed, there is no shift between the alignments. Then it depends, how it will be exported (in which system).
It’s not changing even after aligning images. So if it’s only a problem of coordinates, it means if I export them in a different coordinate system they should be at the same location ? But what coordinate should I used ?
As it is not changing it is in the same coordinates.
To export it using the local coordinates, you need to have set the project and output coordinate system as Local in the application settings
and during exporting the data you need to have selected Project Output for Export transformation settings/Coordinate system
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Thank you Otrhan,
That was it, there was nothing moving in the scene as you said. I had the export coordinates by default set to Grid Plane, just changing it to project output fixed my problem.
Thanks for your help
Maxime,
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