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region of interest in camera input / crop camera input

By IntermediateEn… on Fri, 05/05/2017 - 12:25

Hi,

 

I'm trying to enhance the detection results of vuforia on a windows tablet at a greater distance from the markers.

Therefore I tried to increase the resolution of the webcam profiles, which works as expected but obviously comes with a significant performance drop.

To use the same level of detail without losing so much performance I think it would be great to have the option to define vertical and horizontal borders on the captured imagestream.

As mentioned here: https://developer.vuforia.com/forum/android/crop-camera-image it is possible in c++ to pass a cropped image to the vuforia detector.

Is this also possible for the unity integration?

If not, is it possible to expose the tracker method that takes the camera image and handle the imagecapturing by myself?

Thanks!

IntermediateEn…

Sun, 05/07/2017 - 12:58

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You are right, apparently I misunderstood the post that I linked too!

My question remains though, even if the vuforia SDK takes charge of the video pipeline it should still be possible to supply some border parameters to the image retrieval as part of the webcam profiles...

Hello,

At this time, Vuforia does not provide APIs to adjust the image that is submitted by the camera to the SDK. Here are some of the camera operations allowed:

gualtierremalde

Fri, 10/27/2017 - 12:06

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Hi medabit, I am quite interested in grabbing the frames as well, but the links you posted are dead. Any idea where to find the docs now?

Hello gualtierremalde,

This should be the updated link to the articles referenced by medabit https://library.vuforia.com/content/vuforia-library/en/articles/Solution/Working-with-the-Camera.html

Thanks,