California Institute of Technology

Matthew C Clausen

Jeffrey S Norris

Garrett K Johnson

Victor X Luo

Charles Goddard

Anthony Valderrama

Marsette A Vona, Iii

Alexandra E Samochina

A method and system control navigation of a 3D CAD model in an augmented reality space. The 3D CAD model is rendered and appears as if the 3D CAD model is present in a physical space at true scale. A constrained translate or rotation mode is activated. In response to the activating, an axis triad is rendered. For translate, the axis triad is three lines extending from a point in each principal axis direction, and division markers are displayed along the lines at predefined division distances. One of the division markers is selected and the model is moved the predefined division distance of the selected division marker along the first line. For rotation, the axis triad is three perpendicular rings, and upon selecting one of the rings, an input gesture causes the model to rotate around the selected axis in the direction of the input gesture.

Collaborative augmented reality system

A method, apparatus, and system provide the ability to control navigation of a three-dimensional (3D) computer aided design (CAD) model in an augmented reality space. The 3D CAD model is rendered in the augmented reality space and appears as if it is present in a physical space at true scale. A virtual camera is defined as fixed to a current pose of a user's head. A virtual line segment S is constructed coincident with a ray R from a center of projection P of the virtual camera and a center pixel of the virtual camera. A check for geometric intersections between the virtual line segment S and surfaces of scene elements is conducted. Upon intersecting with a part of the model, a gaze cursor is rendered at an intersection point C closest to the center of projection P.

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Los Angeles, CA, United States of America

Matthew C Clausen