Abstract: This present disclosure describes a system and process for laminating a planar film sheet onto a curved surface of an optical element. One or more cuts to a planar film sheet are determined based in part on a curved surface of an optical element. The planar film sheet is cut along the determined one or more cuts to the planar film sheet to form a lamination sample. And the lamination sample has a plurality of stress relief boundaries that correspond to the determined one or more cuts to the planar film sheet. The lamination sample is laminated to the curved surface of the optical element to form a laminated coating on the optical element. And adjacent stress relief boundaries of the plurality of stress relief boundaries are in contact with each other, such that the laminated coating is a continuous film across the curved surface.

Abstract: In one embodiment, a method includes receiving an initial input in a first modality from a first user from a client system associated with the first user, determining one or more intents corresponding to the initial input by an intent-understanding module, generating one or more candidate continuation-inputs based on the one or more intents, where the one or more candidate continuation-inputs are in one or more candidate modalities, respectively, and wherein the candidate modalities are different from the first modality, and sending instructions for presenting one or more suggested inputs corresponding to one or more of the candidate continuation-inputs to the client system.

Abstract: The disclosed microfluidic valves may include a valve body having at least one cavity therein, a gate transmission element separating the cavity into an input gate terminal and an output gate terminal, a gate port configured to convey drive fluid into the input gate terminal, and a fluid channel. The gate transmission element may include a flexible membrane and a plunger coupled to the flexible membrane. The gate transmission element may be configured to move within the cavity to inhibit a subject fluid flow from an inlet port to an outlet port of the fluid channel upon pressurization of the input gate terminal, and to allow subject fluid flow from the inlet port to the outlet port upon depressurization of the input gate terminal. Various other related systems and methods are also disclosed.

Abstract: A headset includes a tissue transducer on a carriage that translates along a temple portion of the headset. The carriage is configured to contact the helix root of a user's ear. The helix root provides a reference point, and when the carriage is contact with the helix root, the tissue transducer is configured to be located in a target area. By maintaining a fixed location of the tissue transducer relative to the helix root of the user's ear, the tissue transducer may be accurately positioned, even for users with different head shapes and sizes.

Abstract: A virtual-reality device displays a virtual scene. The device generates audio data for an area source in the virtual scene. The area source is within a predefined near-field distance from the listener. The device selects sample points from the area source and determines, for each sample, energy contributions to two respective successive shells of spherical shells that extend from the listener to the predefined near-field distance. The two shells enclose the sample point source, and the determined energy contributions correspond to sound originating from the sample point source. For each shell, the device determines a head-related impulse response (HRIR) by combining the determined energy contributions for that shell. The device determines an overall HRIR for the virtual scene by combining the determined HRIRs for the shells and combines the audio data with the overall HRIR. The device transmits the combined audio data to sound-producing elements of the device.

Abstract: An audio system captures audio data of test sounds through a microphone of a headset worn by a user. The test sounds are played by an external speaker, and the audio data includes audio data captured for different orientations of the headset with respect to the external speaker. A set of head-related transfer function (HRTFs) is calculated based at least in part on the audio data of the test sounds at the different orientations of the headset. A portion of the set of HRTFs is discarded to create an intermediate set of HRTFs. The discarded portion corresponding to one or more distortion regions that are based in part on wearing the headset. One or more HRTFs are generated that correspond to the discarded portion using at least some of the intermediate set of HRTFs to create an individualized set of HRTFs for the user.

Abstract: Systems and methods for generating composite depth images are disclosed. Exemplary implementations may: capture, by a depth sensor, a set of depth images over a capture period of time; generate, by an inertial sensor, inertial signals that convey values of one or more inertial parameters characterizing motion of the depth sensor during the capture period of time; select a target capture position based on one or more of the capture positions of the set of depth images; generate, using the values of the one or more inertial parameters during the capture period of time, re-projected depth images; and generate a composite depth image by combining multiple depth images, such multiple depth images including a first re-projected depth image and a second re-projected depth image.

Abstract: When an online system creates a video exchange session, a user participating in the video exchange session requests inclusion of external video data from an external source other than users participating in the video exchange session. The online system displays the external video content received from the external source in an interface in conjunction with video content received from the users participating in the video exchange session. Displaying the external video content in conjunction with video content from users participating in the video exchange session allows the online system to provide the users with a distraction while in the video exchange session. The online system may associate different external sources with different activities for the video exchange session, allowing selection of an activity to determine the displayed external video content.

Abstract: The present disclosure relates to systems, non-transitory computer-readable media, and methods for accurately, flexibly, and efficiently broadcasting public combined live video streams from multiple participant devices, which change over the course of the live broadcast, as well as generating dynamic user interfaces that streamline adding, removing, and swapping participant devices from the public combined live video stream. In particular, a live video streaming system facilitates compositing live video streams from multiple participant devices into a public combined live video stream within a digital room before broadcasting the public combined live video stream to viewer devices.

Abstract: In one embodiment, a method includes generating embeddings for social-networking entities by training the embeddings using a training algorithm, where an embedding corresponding to an entity represents a point in a d-dimensional embedding space, identifying a subset of entities having one or more common attributes that is not encoded in the generated embeddings, encoding, for each entity in the subset, values of the one or more common attributes into a j-dimensional additional embedding, creating, for each entity in the subset, a (d+j)-dimensional embedding by concatenating the generated d-dimensional embedding with the j-dimensional additional embedding, detecting a need to identify entities similar to a reference entity that is a member of the subset, computing k-nearest neighbors of an embedding corresponding to the reference entity in the (d+j)-dimensional embedding space, identifying entities corresponding to the computed k-nearest neighbors, and providing information regarding the corresponding entities

Abstract: An online system selects for display content items having an option to allow a user to converse with a content provider over an electronic communication system in a way that optimizes for the occurrence of that communication. Content items provided by the online system include links to an online communication system from which the online system can directly observe whether the user engaged in communications with third parties. The online system can thus obtain labeled training data describing communications between users and users' previous interactions with content items and pages of the online system. The trained model is applied to candidate content items to predict a probability that a user will engage in a communication with the content provider if the content is provided to the user, and the model optimizes the selection of content items for which the call to action is to engage in the communication.

Abstract: A display device includes a frame, a display, an optical assembly, and a display-moving assembly connected to the display and the frame. The display-moving assembly is configured to move the display between multiple different positions, including a first position and a second position. When the display is in the first position, the display is configured to output image light in a first direction. The first direction is substantially parallel to an optical axis of the optical assembly. When the display is in the second position, the display is positioned away from the optical axis of the optical assembly.

Abstract: Systems, articles, and methods for improved capacitive electromyography (“EMG”) sensors are described. The improved capacitive EMG sensors include one or more sensor electrode(s) that is/are coated with a protective barrier formed of a material that has a relative permittivity ?r of about 10 or more. The protective barrier shields the sensor electrode(s) from moisture, sweat, skin oils, etc. while advantageously contributing to a large capacitance between the sensor electrode(s) and the user's body. In this way, the improved capacitive EMG sensors provide enhanced robustness against variations in skin and/or environmental conditions. Such improved capacitive EMG sensors are particularly well-suited for use in wearable EMG devices that may be worn by a user for an extended period of time and/or under a variety of skin and/or environmental conditions. A wearable EMG device that provides a component of a human-electronics interface and incorporates such improved capacitive EMG sensors is described.

Abstract: An optical element includes a primary electrode, a secondary electrode overlapping at least a portion of the primary electrode, and a structurally-modified and transparent electroactive polymer disposed between and abutting the primary electrode and the secondary electrode. An optical device may include a tunable lens and an optical element disposed over at least one surface of the tunable lens.

Abstract: A tissue conduction audio system includes a transducer that produces vibrations as it presents audio to a user. A vibration isolation system isolates the vibrations produced by the transducer. The vibration isolation system includes a suspension component with flexures that are configured to have an asymmetric spring rate when at rest and a symmetric spring rate when the transducer is in use and/or at a target position.

Abstract: Exemplary embodiments relate to the creation of a media effect index for group video conversations. Media effect application (e.g., in the form of graphical overlays, filters, sounds, etc.) may be tracked in a timeline during a chat session. The resulting index may be used to create a highlights reel, which may serve as an index into a live show or may be used to determine the best time to insert materials into a recording of the conversation. The index may be used to automatically detect events in the video feed, to allow viewers to skip ahead to exciting moments (e.g., represented by clusters of applications of particular types of media effects), to determine where each participant spoke in a discussion, or to provide a common “watch together” experience while multiple users watch a common video. An analysis of the index may be used for research or consumer testing.

Abstract: The disclosed computer-implemented method may include extracting, from a baseline video file, metadata that identifies at least one characteristic of the baseline video file, creating, using the extracted metadata as a framework, a template for remixing the baseline video file with new content, obtaining at least one new item of content, and creating, using the template, a remixed version of the baseline video file by replacing at least one original item of content in the baseline video file with the new item of content. Various other methods, systems, and computer-readable media are also disclosed.