Help understanding perspective distortion

Unity Engine
, ,
1

I need some help understanding if the perspective distortions I am seeing when testing my unity scene are normal and if not, what is causing the problem and how can I fix it. I am new to unity and to AR.

I am using ARFoundation and building for iphone (currently testing on iphone SE 2020)
I have a simple scene where objects are spawn using an image tracker. The model is placed on the correct position and it is stable, the problem is when I move my phone, specially if pointing it down or up, the model seems to distort and move. This happens using both perspective and ortographic camera.

here you can see here a gif:

the distortion happens on the lower part of the model, it seems the tip moves and curves a bit.

Thank you for any insight.

2

That to me looks like the object has been placed against the back wall, and the bottom is through the floor, so the perspective looks about correct if it was somewhat in the distance, beyond the floor physically, but rendered on top of it since ar objects are rendered on top of the real environment if no depth occlusion is in use.

1 Like
3

I tested with the Anchors scene in our our samples package, and I observe similar amounts of “distortion”. I suspect the drift your gif shows is due to technical limitations of the current localization models on the device. Especially on a device without LiDAR, AR is unfortunately an imprecise matter.

1 Like