[vtkusers] Weird data and SEGFAULT when using vtkIterativeClosestPointTransform

[David Gobbi]

Hi Ronald,

How many points are in your data sets?  When the crash occurs, are the
points in one of the datasets colinear? coplanar?

 - David

On Mon, Mar 7, 2016 at 2:24 AM, Ronald van Duren <ronaldvanduren at hotmail.com
> wrote:

> Hi,
>
>
> I want to create a point cloud by moving and rotating my depth
> sensor(Structure Sensor). I figured out ICP is probably the way to go since
> I can get a tranformation matrix which I can use to shift the sensors frame
> left, right up or down. Otherwise the points would be drawn on top of
> each other in static frame of 640x480.
>
>
> After some time I got the vtkIterativeClosestPointTransform to work, I
> used the example provided by VTK. But the transformation matrix has weird
> data in it, sometimes it has several NaN values in it and the overal data
> in the matrix just doesn't seem right. My linear algebra skills are
> intermediate so I could be wrong. Also, when I move the sensor with a speed
> that is anything more than extremely slow a segfault is thrown. Because the
> source code is compiled I cannot trace down the segfault.
>
>
> Any chance somebody knows what's wrong?
>
>
> Thanks in advance!
>
>
> Ronald van Duren.
>
>
> Technical information:
>
>
>    - ​I use Android and specifically the NDK so everything is in C++.
>    - I use the compiled dynamic library for Android, Armeabi-v7a.
>    - I use the Structure Sensor.
>    - VTK version is 2.4.9.
>
>
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