Projecting patterns for high resolution texture extraction

Abstract

Camera-based texture extraction in Augmented Reality (AR) systems is enhanced by manipulating projected patterns. One or more fine line patterns are projected onto a textured surface, a Moire interference pattern measured, and different properties of the projected pattern(s) adjusted until the Moire interference pattern measurements indicate that a similar texture pattern to that of the three dimensional target is being projected. Thereby, the target texture may be more closely matched even as sub-pixel resolutions, variable lighting conditions, and/or complicated geometries.

Description

Background technique [0001] Unless otherwise indicated herein, the materials described in this section are not prior art to the claims in this application and are not admitted to be prior art by inclusion in this section. [0002] Applications ranging from vision inspection to autonomous navigation recognize objects in images and calculate their pose in 3D scenes. Many of these applications employ pre-stored object models for accurate detection. The task becomes more complicated when objects are to be detected without prior information. Objects with textured surfaces render the object recognition task even more complex. [0003] Augmented Reality (AR) refers to the view of a physical (real) world environment, elements of which are augmented by virtual, often computer-generated imagery, thereby creating a hybrid reality. Augmentation can typically be real-time and in context with environmental elements (eg, sporting events, training exercises, games, etc.). AR technology ma...

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Problems solved by technology

[0005] This disclosure recognizes that texture e

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