Non-flat surface problems

Development Asset Creation
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1

It has succeeded in creating a point cloud with high accuracy coordinates with high precision GPS.
However, the point cloud quality is significantly lower than that of a different software.
Are there any parameters I need to adjust?

2

hello, how does the render look like?

3

Hi jss

Its look like bad alignment. What settings have you used for reconstruction ? From what sort of UAV camera were the data captured ?

4

All camera Priors is 100. Of course ,It is similar when all values are 1. There are objects on the road that have different heights, such as sinkholes.

5

Hey jss,

did you improve the alignment in the different software by using gradual selection?
I have similar problems sometimes and I think it is due to reprojection errors.
You can try and play around with the setting for that, but it might break up into several components…

6

Thanks.

How about camera setting? I used the A7R2 and it seems that the stabilization function was active.

7

Stabilization has been largely acquited.
Apparently the effect is negligible, the optical one that is.
I think the stabilization via sensor is still a big NO-NO.
And if you look at the distortion values, they all slightly differ, which means the algorythm should be able to deal with small differences…

8

Also, you say in other software it is ok.
So did you use the filtering tools there?
Also, were the screenshots taken from preview, normal or high reconstruction?

9

can you post screen shot with camera enabled?

were you shooting looking straight down? or with a 45-60 degree angle?

10

The camera was usually shot downwards as it was when making maps.
Result in another program was aligned to high and builded point cloud to normal.

All sceenshot is from CloudCompare.

Thanks.

11

Hi jss

Contact me on my email for further discussion and remote inspection of the data on your PC.

12

Did you try using a different distortion model?
I got slightly better results with the last brown 4 instead of the simple brown 3…

And I meant what kind of reconstruction did you use with RealityCapture?
It looks very much like preview to me.