Augmented Reality: Principles and Practice (Usability) by Dieter Schmalstieg & Tobias Hollerer

Author:Dieter Schmalstieg & Tobias Hollerer [Schmalstieg, Dieter]
Language: eng
Format: azw3
Publisher: Pearson Education
Published: 2016-06-01T04:00:00+00:00

Figure 7.18 (top) The variable perspective view integrates a first-person perspective of the foreground and a virtual top-down view of the distant scene in one image. Courtesy of Eduardo Veas. (bottom) The variable perspective view is achieved by applying principles from skeleton animation to the tilted part of the scene geometry.

All vertices in the virtual scene are weighted according to their distance from the main camera to the rotation axis. The weight of vertices defines whether they fall in the view of the main camera, in the view of the secondary camera, or in the transition zone, where they are interpolated. To further extend the overview, the secondary camera is placed at a distance from the AR view, enabling it to capture more information from the digital data, while correctly registering the video for real-world context.

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