Wikitude

Image Target for Money bills and unstable 3D Models

Hello,

I'm working on a project that I must track our local currency bills (BRL - Brazilian Reais) and show a 3D model on top of it.

I'm having difficulties on getting 3 start for my targets.Do you have any tips on tracking money bills?
For the final user I know that we gonna have bills on different conservation styles.

For the target images (about 4 targets per bill) I'm using:
- desaturate
- change levels for making high contrast
- little blur of sharpen effect

I've already have and working example, but it looks like is too sensitive. Any small movement makes the 3D model shake, jump and loose tracking.

The bills we are using is: R$ 2, R$ 5, R$ 10, R$ 20, R$ 50, R$ 100

Example: R$ 2
https://www.bcb.gov.br/novasnotas/assets/img/section/2/2_front.jpg

Best,