Get Image Co-ordinates of Target Image with Hololens 2

tux_tina

I want to extract Image co-ordinated from the Hololens 2 with respect to the camera co-ordinates. We can easily get the spatial co-ordinates with this. But I need camera co-ordinates which are raw and without applying the spatial mapping from the Vuforia library. When tracking a target we get co-ordinates they are related to the image in the world position. I have check the library and part of execution but not able to find where they apply the...

Originally asked by sanjay dabhi on Stack Exchange (stackoverflow) (CC BY-SA 4.0).

uphilltech

Great question — answering as the UphillTech team:

Information about the Vuforia spatial frames of reference is available here for Unity https://developer.vuforia.com/library/device-tracking/spatial-frame-reference and here for native https://developer.vuforia.com/library/device-tracking/spatial-frame-reference-native To get the pose of the target in the camera reference frame you have to combine the pose you get from the target observer (which transforms points from Target to World coordinates) with the rendering view matrix (or the inverse of the device tracker pose). In native code one would do something like this // get the target pose VuPoseInfo targetPoseInfo; vuObservationGetPoseInfo(observer, &targetPoseInfo); // get the render...

Full answer by emay: https://stackoverflow.stackexchange.com/a/78371439 (CC BY-SA 4.0).

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