Reality Capture Target in local

Development Asset Creation
,
1

Hi All,

I need some help to improve my workflow using target (in local coordinates) in a CP project?

I have my project aligned pretty good but i would use coordinate defined by laser to defined a comon base point.

I take the local coordinates and put them in a txt file, then i imported txt in reality ad local 1 - Euclidean, but when i going to associete target to photo seems the settings are related to global GPS position (error in screenshot attached).

Thanks in advance to anyone have some suggest…

Have a nice day

2

Hi insideout_pc1,
can you add the image there again? It shouldn’t be bigger as 2MB. 
Have the images set the Prior pose to Position? If so, change it to Unknown. Also, which coordinate system do you have set in the Project settings?

3

Hi Ondrej,

all images i try to share seems not visible in right way (little black rectangle in left top corner…) i don’t understand way.

I have to change prior pose postion to unknown for all photos?

I reset the coordinate system to local as i read in another post.

Thanks 

 

4

Just paste the images here from snapping tool, it is the easiest way.

Yes, for all photos. Are those from drone?

5

Yes all images are taken from drone, i’m going to reallign because for some reason model rotate on x and y axes. Do you think is better to define target before or after create model?

thanks for guide…

6

Another strange things, only z seems works  in according to txt file…

7

Is it possible that you had set Lat/Lon coordinates as File format during GCP’s import? You need to use X/Y option there.

8

The situation improves, but i have some doubt, if i put a distance constraint between target seems thare a great error between “defined distance” and " calculated distance

9

It all depends how precise were the targets measured. Have you used total station to do so? If you have GCPs, you don’t need constraints. The difference here is around 20 cm, which is quite big. How was the distance measured? Also, you could place the targets on more than 3 images. It is a minimal number of placings. Which targets were used for distance definition?

10

Only one target generates that error, i excluded and the other four works good.

I dafined target on laser scanner survey i’m quite confident about the measures.

I used common black and white target 15 cm per side.

Anyway with your help i have a useful  uas point cloud righr postioned on laser scaner survey.

Thanks a lot.

11

You’re welcome!

12

Hi, i have another doubt, with this method for each project when i start rc i reset setting to work in local

Then i put all photo in prior pose position unknow, but i noted that rc use a lot of time to align (probably because doesn’t use gps data), Can  i put in prior pose position after alignment?

I try to understand which is the best workflow.

Thanks

13

Hi, yes it is possible. You can set prior pose to a wanted value and then use Update tool.