A method for predefining an entryway, corresponding to a real entryway, for an object entering or leaving an extended reality (XR) space contained within a real environment includes: accessing a spatial mapping mesh (SMM) for the real environment, and a sealed space mesh (SSM) for the XR space; analyzing polygons in the SMM and SSM to identify first subsets representing real boundary walls and virtual wall boundaries respectively; filtering the first subsets according to first criteria to yield second subsets; colliding polygons across the second subsets to yield a third subset of SSM polygons; defining groups of connected SSM polygons within the third subset based on proximity; and selecting one group as defining the entryway. The entryway is predefined in advance of user interaction with any virtual elements in the XR space.

A method for quasi-random placement of a virtual item in an XR space includes: accessing a previously generated spatial mapping mesh (SMM) of the XR space; compiling a record from the SMM of open spaces between surfaces of physical elements in the XR space, with corresponding positions and dimensions; selecting from the open spaces: a spawn position for a virtual character, and a random set of other positions, filtering the random set to form a subset. The method then performs a collision analysis to assign a score to each position in the subset partly based on accessibility to that position for the virtual character beginning from the spawn position; and places the virtual item at a position in the subset having a score as high or higher than all other positions in the subset. The method is carried out before user interaction with any virtual element in the XR space.

A method predefines a virtual staircase connecting real platforms in an XR space by: accessing a previously generated spatial mapping mesh (SMM); compiling a record from the SMM of available surfaces; identifying available platforms provided by the physical elements and available open spaces therebetween; selecting a first platform at a first level and a second platform at a significantly lower level; selecting a staircase start location at a first edge of the first platform, partly based on predetermined criteria; stacking virtual blocks linearly to form a virtual staircase, with a first virtual block contacting and extending outwards from the first platform, and a last virtual block contacting the second platform at a staircase end location; and performing a collision analysis. If the staircase end location satisfies the predetermined criteria, and if no collisions are detected, the current virtual staircase is displayed in subsequent user interactions with the XR space.

A method for regulating falls of a user-controlled character through gaps between surfaces in an extended reality (XR) space in which the user is playing a game includes compiling a record from a previously generated spatial mapping mesh (SMM) of the XR space of surfaces of real elements present in that space, with corresponding positions and dimensions; and, after the game begins, determining whether, if the character approaches a substantially vertical gap between an edge of a first surface at a first level and a second surface, at a second level lower than the first level, continuing motion of the character to fall through the vertical gap will be permitted or prevented. A similar method for regulating jumps rather than falls of a user-controlled character through gaps between surfaces in an extended reality (XR) space in which the user is playing a game is also described.

A method for providing a user with an improved understanding of an XR space in which the user is playing a video game includes: continuously tracking a user-controlled character in the video game; accessing a previously generated spatial mapping mesh (SMM) of surfaces of real elements present in the XR space, with corresponding positions and dimensions; analyzing information from the SMM on one or more real surfaces within a predetermined distance of the user-controlled character; carrying out an action based on a tracked position of the user-controlled character and, at least in part, on a result of the analysis; and making a consequence of the action visible to the user.

A method for providing a user with an improved understanding of an XR space in which the user is playing a video game includes: continuously tracking a user-controlled character in the video game; accessing a previously generated spatial mapping mesh (SMM) of surfaces of real elements present in the XR space, with corresponding positions and dimensions; analyzing information from the SMM on one or more real surfaces within a predetermined distance of the user-controlled character; carrying out an action based on a tracked position of the user-controlled character and, at least in part, on a result of the analysis; and making a consequence of the action visible to the user.

A lens assembly, related methods and constituent optical elements are described. The assembly may be used to direct and focus light for various applications. In one instance, the lens assembly is used in conjunction with one or more sources of light such as projected images or video as part of a virtual reality system. The lens assembly includes two or more optical elements arranged to receive light or direct light through different spatial regions of the assembly at different focal powers corresponding to a first user viewing zone and a second user viewing zone. In one instance, the first user viewing zone is a peripheral viewing zone and the second viewing zone is a primary or non-peripheral viewing zone (or vice versa).

A lens assembly, related methods and constituent optical elements are described. The assembly may be used to direct and focus light for various applications. In one instance, the lens assembly is used in conjunction with one or more sources of light such as projected images or video as part of a virtual reality system. The lens assembly includes two or more optical elements arranged to receive light or direct light through different spatial regions of the assembly at different focal powers corresponding to a first user viewing zone and a second user viewing zone. In one instance, the first user viewing zone is a peripheral viewing zone and the second viewing zone is a primary or non-peripheral viewing zone (or vice versa).

Technologies for providing a cognitive capacity test for autonomous driving include a compute device. The compute device includes circuitry that is configured to display content to a user, prompt a message to the user to turn user’s attention to another activity that needs situational awareness, receive a user response, and analyze the user response to determine an accuracy of the user response and a response time, wherein the accuracy and response time are indicative of a cognitive capacity of the user to assume control of an autonomous vehicle when the autonomous vehicle encounters a situation that the vehicle is unable to navigate.

A system includes a mobile device having one or more cameras to take images; a sensor detecting reflected light from one or more lasers and a diffuser to detect object range or dimension; code for motion tracking, environmental understanding by detecting planes in an environment, and estimating light and dimensions of the surrounding based on the one or more lasers; code to estimate a three-dimensional (3D) volume of an object from multiple perspectives and from projected laser beams to measure size or scale and determine locations of points on the object's surface in a plane or a slice using time-of-flight, wherein positions and cross-sections for different slices are correlated to construct a 3D model of the object, including object position and shape; the device receiving user request to select a content from one or more augmented, virtual, or extended reality contents and rendering a reality view of the environment.