Abstract: Various techniques pertaining to methods, systems, and computer program products a spatial persistence process that places a virtual object relative to a physical object for an extended-reality display device based at least in part upon a persistent coordinate frame (PCF). A determination is made to decide whether a drift is detected for the virtual object relative to the physical object. upon or after detection of the drift or deviation, the drift or deviation is corrected at least by updating a tracking map into an updated tracking map and further at least by updating the persistent coordinate frame (PCF) based at least in part upon the updated tracking map, wherein the persistent coordinate frame (PCF) comprises six degrees of freedom relative to the map coordinate system.

Abstract: Various embodiments include methods and implementing computing devices, for distributing compute operation across connected wired or wireless computing devices. Various embodiments may include establishing an ad hoc communication connection with a second computing device, in which the ad hoc communication connection is part of a network of a plurality of wired or wireless computing devices communicatively connected via a plurality of ad hoc communication connections, receiving context information of the second wired or computing device via the ad hoc communication connection, selecting at least one sensor wired or wireless computing device from the plurality of wired or wireless computing devices, selecting at least one execution wired or wireless computing device from the plurality of wired or wireless computing devices, assigning a data gathering part of a work item to the sensor computing device, and assigning an execution part of the work item to the execution wired or wireless computing device.

Abstract: Systems and techniques are provided for processing audio data. For instance, a process can include detecting a first audio data between two or more in-person participants of a plurality of in-person participants of a group communication session. The first audio data can be identified as private based on one or more cues associated with the first audio data. A second audio data can be identified between the two or more in-person participants. The second audio data can be identified as non-private based on one or more additional cues associated with the second audio data, wherein the one or more additional cues associated with the second audio data are different from the one or more cues associated with the first audio data. The second audio data can be output based on identifying the second audio data as non-private.

Abstract: Systems and techniques are provided for processing audio data. For instance, a process can include obtaining a primary audio signal from a user computing device and obtaining first audio data from an additional computing device, wherein the additional computing device is within an auditory range of the user computing device. The primary audio signal can be filtered to generate a filtered primary audio signal. The filtering can include removing a representation of the first audio data from the primary audio signal. The filtered primary audio signal can be output to a network-based meeting.

Abstract: Systems and techniques are provided for processing audio data. For instance, a process can include detecting a first audio data between two or more in-person participants of a plurality of in-person participants of a group communication session. The first audio data can be identified as private based on one or more cues associated with the first audio data. A second audio data can be identified between the two or more in-person participants. The second audio data can be identified as non-private based on one or more additional cues associated with the second audio data, wherein the one or more additional cues associated with the second audio data are different from the one or more cues associated with the first audio data. The second audio data can be output based on identifying the second audio data as non-private.

Abstract: A special effects system for creating a unique walking character effect or illusion. The character appears to the observer to be a physical character or to have dimensionality rather than being two dimensional. The illusion or effect is achieved by mounting a projector and a thin, vertical, flat screen onto an automated cart or sled. The cart is adapted to roll on a track positioned to run from a backdrop or backwall toward a viewing space in which one or more observers or viewers may be located during system operations. The media (or video file) of the character walking is projected on the projection surface of the screen element with the projector. The sled or cart is triggered to roll forward toward the viewing space as the media is playing so that the projected image appears to be moving and getting closer to the viewer.

Abstract: A special effects system for creating a unique walking character effect or illusion. The character appears to the observer to be a physical character or to have dimensionality rather than being two dimensional. The illusion or effect is achieved by mounting a projector and a thin, vertical, flat screen onto an automated cart or sled. The cart is adapted to roll on a track positioned to run from a backdrop or backwall toward a viewing space in which one or more observers or viewers may be located during system operations. The media (or video file) of the character walking is projected on the projection surface of the screen element with the projector. The sled or cart is triggered to roll forward toward the viewing space as the media is playing so that the projected image appears to be moving and getting closer to the viewer.

Abstract: A special effects system to provide the effect or illusion of a surface of a set (such as a ceiling, sidewall, floor, or the like) being penetrated and cut by a physical prop (e.g., a tool or weapon). In some preferred embodiments, the physical prop takes on the appearance of a glowing or hot elongated rod similar to the blade of an energy sword or light saber as found in entertainment media. The system is configured to provide the illusion, in these cases, that a circular groove or slot is being formed as the hot blade burns through the material of the surface of the set/scene. Additional effects add to the believability of this illusion including the up and down sawing movement of the physical prob through the slot, appearance of smoke with shadows near the cutting regions, and bright sparkling lighting at leading edge of slot.

Abstract: A muscle stretching apparatus includes a flexible, essentially inextensible main support structure of elongate dimension. At least a pair of bilateral auxiliary support structures is carried on the main support structure, each provided as serially arranged segments along at least a portion of an overall length of the main support structure. Each of the segments is connected with the main support structure creating a loop defining a bounded opening between each segment of the auxiliary support structure and the main support structure, thereby forming a handle structure for engagement by a hand or other appendage. Optionally, at least one end of the muscle stretching apparatus terminates in a loop free of the centrally disposed main support structure, for facilitated reception of, for example, a foot therein. Tension applied between an anchored position of the apparatus and at least one grasped position is used to stretch a selected muscle or muscles.

Abstract: The present invention is a safety garment having electroluminescent strips to illuminate the garment, as well as quick-release points to allow an individual wearing to garment to quickly remove the garment in an emergency situation.

Abstract: A method of manufacturing nitrided silicon parts which retain their mechanical properties after hot oxidation, said method consisting of sintering silicon powder in an atmosphere which is rich in nitrogen. 1% to 10% by weight of aluminium powder is added to the silicon before sintering thereof and preliminary hot oxidation is effected in conditions which allow acicular mullite to form by the direct action of the aluminium and of a complement of oxygen molecules supplied by the outside medium on the silicon formed.

Abstract: A method of manufacturing nitrided silicon parts by sintering a silicon powder containing aluminium under an atmosphere rich in nitrogen. A small quantity of carbon monoxide is added to the nitrogen atmosphere and the nitrogen and carbon monoxide partial pressures and the aluminium content of the silicon powder are chosen so that the oxidation reaction by the carbon monoxide on the nitrided silicon formed in the surfaces layers of the parts maintains therein an open porosity which is sufficient to allow the nitrogen to penetrate to the cores of the parts until the parts are homogeneously nitrided. Application to the manufacture of parts which must retain good mechanical strength at high temperature.