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yshrkt / VuforiaSampleSwift

Vuforia sample code with SceneKit using Swift
MIT License
123 stars 24 forks source link

Model shaking #8

Closed jhudziak closed 6 years ago

jhudziak commented 8 years ago

Hello,

I have a problem with shaking 3D models. I do not know why, but in some cases even I put the phone on something stable models are constantly shaking. Options ExtendedTracking and continuousAutofocus are enabled. The target has 5 stars and have been tested as printed version and on different monitors.

Do you maybe have some ideas why this happens?

Regards, JH

yshrkt commented 8 years ago

@jhudziak Do you get same problem using other image target or simple model (like a box)? Umm..., some hints might exist in vuforia forum. https://developer.vuforia.com/search/apache_solrsearch/Shake?fq%5B%5D=bundle%253Aforum

jhudziak commented 8 years ago

In downloaded sample and the box is not shake, but if you move fast phone or tablet SCNNode - box act as jelly, it swims. Every device move makes every nodes try to adapt its position. If you try Vuforia sample Image Targets you see that the cup is stil i same place. This situations is easy to spot if you look at the edges of target stones and node with plane geometry.

I try to find a difference between this sample and Vuforia and they are almost same. Do you have any idea why there is a big difference?

JH

yshrkt commented 8 years ago

I think my sample has overheads caused by using SceneKit. On the other hand, Vuforia's sample is rendered using OpenGLES directly. In my usecase, my sample has enough performance. So I don't think as big difference. But I think my sample still has a lot of possibilities to tuning the performance.

jhudziak commented 7 years ago

I don't have much experience in Scenekit :(. Maybe you could do something with this, or indicate how to try correct it?

yshrkt commented 7 years ago

Sorry, I am not working with this issue now. I think this issue is very hard...