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Very small targets (.5")

By CaptainN on Fri, 02/20/2015 - 21:43

Hi,

I'm trying to get some targets to work but they have to work on a very small surface, about 1/2 an inch. I can get the targets to work reliably at 1 inch or so, but when I shrink it down to 1/2 inch they stop working completely, even though they appear clearly on camera.

Is this something that can be done reliably at such a small size?

Thanks,

Kevin N.

 

AlessandroB

Mon, 02/23/2015 - 11:47

Permalink

For Image Targets, a size of "0.5 inch"  sounds like fairly challenging;

the developer guide provides some guidelines here:

https://developer.vuforia.com/resources/dev-guide/image-targets

Vuforia does not support camera zoom;  ... IMO, if the device has troubles staying focused at close range, the best option is probably to use FOCUS_MODE_MACRO (i.e. disable Autofocus) and see if it gets more stable. 

 

 

I've tried that on Android (at least, I think that's the default, since it's stops focusing soon after the app starts). The problem there is that it focuses further out than the camera is capable of. I'll play around though. Thanks for the suggestinos.