Abstract: To improve the efficiency of bounding volumes in a hardware based ray tracer, we employ a sheared axis-aligned bounding box to approximate an oriented bounding box typically defined by rotations. To achieve this, the bounding volume hierarchy builder shears an axis-aligned box to fit tightly around its enclosed oriented geometry in top level or bottom level space, then computes the inverse shear transform. The bounds are still stored as axis-aligned boxes in memory, now defined in the new sheared coordinate system, along with the derived parameters to transform a ray into the sheared coordinate system before testing intersection with the boxes. The ray-bounding volume intersection test is performed as usual, just in the new sheared coordinate system.

Abstract: A method and system for biometric and psychometric based content display. The method includes storing a psychometric assessment instrument as a data structure on a mobile device. The psychometric assessment instrument includes user data for ascertaining a user’s psychometric identity. A server collects and tags content by attribute for each specific classification of the plurality of psychometric classifications. The content is further organized across three state classes and cross-referenced with a plurality of interests. A pulse rate is measured using a camera on the mobile device. The pulse rate is measured using temporal color contrast between two frames. The pulse rate is converted to a heart rate variability (HRV) measure, which is used to designate a current state class using an artificial intelligence (AI) model. The state class is used to automatically retrieve appropriate coaching media content for consumption on the mobile device.

Abstract: An image generator is configured to generate display light. A first waveguide is configured to generate wide-field image light from a first portion of the display light. A first outcoupling element of the first waveguide extends to a boundary of the frame to provide the wide-field display to substantially all of the augmented FOV of the user. A second waveguide is configured to generate inset image light from a second portion of the display light received from the image generator.