Log in or register to post comments

Image Target Scale and Shadows

April 10, 2019 - 1:47am #1

So we need to talk vuforia scale, unty, and image targets. There are serveral issues that need to be address - if you have any solutions please tell me.


Here's the current issues we're having with the scale:

Vuforia recommends using the real world scale, so if the image is 25 cm wide, we input 0.25 into the target manager.

Importing into unity will give us a target with width of 0.25 units. 

This creates two main problems:

1) Working at this small scale the unity editor, the editor camera control is not fine grained enough.

2) Shadows are pixelated/blurry at this small scale - We havn't tested on other platforms but trying a ton of different settings, shadows always look bad on Android.

Solution with new issues:

Setting the scale (either in the target manager or in unity) of the target to something like high (1-5 meters) allows for shadows to render fine on android, and makes it easier to navigate the editor camera. 

However, chaning the scale to not reflect real life scale will cause issues for extended tracking, as seen here: https://youtu.be/tUtrb1yK6Vs

So... what is possible here? How can we hack unity to generate good shadows on android/get better editor control? Are any other's experiencing these issues?

Image Target Scale and Shadows

April 13, 2019 - 6:56pm #3

1) I agree, this is a pain, but I see this as more of a Unity issue.    I assume you are talking about using the scroll wheel for zooming at small scales?  I usually scale up while working and scale back down when I'm done.  Alt+Right click drag(mac) is another option, but Unity should really allow sensitivity in the preferences.  Maybe you could write a script that sets the correct scale when entering play mode and returns it big after exiting.

2) You've gone into Project Settings->Quality  and changed shadow distance?  I've never had an issue getting good shadows after tweaking the various shadow settings for each platform.


Image Target Scale and Shadows

April 12, 2019 - 1:48pm #2


Thanks for the detailed report. I've escalated the issue with the internal team for evaluation.

If there is any relevant feedback, I'll reply here.


Vuforia Engine Support

Log in or register to post comments