Abstract: The embodiments of the disclosure provide a method for improving a pass-through view and a host. The method includes: obtaining current per-frame information and historical per-frame information of the host; determining historical tracking information and texture information of a target object based on the historical per-frame information of the host; predicting current tracking information of the target object based on the historical tracking information of the target object and the current per-frame information of the host; rendering an object image corresponding to the target object based on the current tracking information and the texture information of the target object; and generating the pass-through view based on the rendered object image, the current per-frame information of the host, and the current tracking information of the target object, and displaying the pass-through view.

Abstract: The embodiments of the disclosure provide a method for improving a mixed reality service and a host. The method includes the following. A reference image for rendering a pass-through view is obtained from a color camera of the host. Coordinate transformation information is determined based on camera information of the host. The coordinate transformation information is used to convert a rendering position from a preset rendering position to a reference rendering position. A reference reprojection parameter is determined based on a preset reprojection parameter, the camera information of the host, and the coordinate transformation information. A virtual object corresponding to a target object to be rendered is rendered based on object information of the target object to be rendered and the coordinate transformation information. The virtual object is combined with the reference image into the pass-through view.

Abstract: A map optimizing method, applicable to an electronic device storing distance values and a map, includes: identifying, from the map, a first map point with a first estimated coordinate and a second map point with a second estimated coordinate generated based on a first marker and a second marker, respectively; generating, according to the first and second estimated coordinates, virtual cameras controlled by a virtual pose and with optical axes intersected at first and second intersection coordinates separated from each other by one of the distance values, in which the virtual cameras provide virtual frames indicating that the first and second markers are observed at the first and second intersection coordinates, respectively; and performing a global bundle adjustment to optimize the map, including adjusting the first and second estimated coordinates to reduce a sum of re-projection errors calculated according to real keyframes and the virtual frames.

Abstract: The embodiments of the disclosure provide a method for reducing computational loading while generating a content and a host. The method includes: obtaining a texture map and a plurality of object texture coordinates, wherein the object texture coordinates correspond to at least one virtual object in the texture map; obtaining a first mesh map corresponding to the texture map; determining a first mesh segment and a second mesh segment within the first mesh map based on the object texture coordinates, wherein the first mesh segment does not correspond to the object texture coordinates, and the second mesh segment corresponds to the object texture coordinates; modifying the first mesh map into a second mesh map via reducing a first segment area of the first mesh segment; and generating a visual content via performing an asynchronous time warp operation on the texture map based on the second mesh map.

Abstract: A system and a method of coordinate system alignment for multiple head mounted displays are provided. The method includes: capturing a first image of a second head mounted display by a first camera of a first head mounted display; performing a first face detection on the first image to obtain a first bounding box corresponding to a first coordinate system by the first head mounted display; aligning the first coordinate system corresponding to the first head mounted display with a second coordinates system corresponding to the second head mounted display according to a first position of the first bounding box by the first head mounted display, so as to update the first coordinate system; and displaying an output image according to the updated first coordinate system by the first head mounted display.

Abstract: This disclosure provides a method for generating an optimal tree for rendering or streaming a 3D model. The method includes: obtaining a complete tree of a 3D model; obtaining a quality value of a node of the complete tree of the 3D model; obtaining a visibility value of the node of the complete tree of the 3D model; determining an optimal tree of the 3D model based on the complete tree, the quality value, and the visibility value; and rendering the 3D model based on the optimal tree.

Abstract: The embodiments of the disclosure provide a method for managing message transmission, a control device, and a computer readable storage medium. The method includes: determining a first zone where a first client device locates among a plurality of predetermined zones; determining a first relative position between the first zone and a second zone among the plurality of predetermined zones; determining a first message transmitting frequency associated with the second zone based on the first relative position; and in response to determining that a second client device locates in the second zone, providing at least a first part of a plurality of first messages from the first client device located in the first zone to the second client device based on the first message transmitting frequency.

Abstract: A head-mounted display device includes a display, a lens group and an actuator. The display is used for generating an image light beam. The lens group is disposed between the display and a target area and is adapted to focus the image light beam to form a display image in the target area. The actuator is coupled to the display or the lens group to periodically move the display or the lens group on a plane.

Abstract: The embodiments of the disclosure provide a method for providing a virtual plane, a host, and a computer readable storage medium The method includes: tracking a hand gesture of a hand and determining whether the hand has performed a target gesture; in response to determining that the hand has performed the target gesture, providing the virtual plane at a reference height in a virtual world of a reality service; and displaying a height adjustment element in the virtual world, wherein the height adjustment element is used for adjusting a height of the virtual plane in the virtual world.

Abstract: A head-mounted display device includes a body, a first optical lens group, and a second optical lens group. The body has a first and second lens holders respectively used to accommodate a first and second lenses corresponding to both eyes. An inner wall of the first lens holder has two first combining portions. An inner wall of the second lens holder has two second combining portions. The first and second optical lens groups are installed in the body and respectively correspond to the first lens holder and the second lens holder. When the first lens is accommodated in the first lens holder, two third combining portions of the first lens are combined with the first combining portions, and a gap is maintained between the first lens and the first optical lens group. When the second lens is accommodated in the second lens holder, two fourth combining portions of the second lens are combined with the second combining portions, and a gap is maintained between the second lens and the second optical lens group.

Abstract: The embodiments of the disclosure provide a method and system for resuming a connection, and a computer readable storage medium. The method includes: establishing a first connection with a host and sending first identification information associated with the first client device to the host via the first connection; determining first certification information based on the first identification information and sending the first certification information to the first client device via the first connection; in response to determining that a first connection resume operation associated with the first connection is triggered in a case where the first connection is disconnected, at least sending the first certification information to the host; certifying the first client device at least based on the first certification information and first reference information; and in response to determining that the first client device is certified, resuming the first connection with the first client device.

Abstract: A communication device includes an RF (Radio Frequency) module, an integrated module, a first tuning circuit, a signal transmission line, and a first antenna element. The RF module generates an RF signal. The integrated module includes a SAR (Specific Absorption Rate) sensor and an HBC (Human Body Communication) module. The signal transmission line includes a central conductor and an external conductor. The RF signal is transmitted through the signal transmission line to the first antenna element. The first terminal of the HBC module is coupled through the first tuning circuit to the central conductor, and the second terminal of the HBC module is coupled to the external conductor.

Abstract: The embodiments of the disclosure provide a method for dynamically controlling shooting parameters of a camera and a tracking device. The method includes: determining a plurality of time frames, wherein the time frames include a plurality of first time frames and a plurality of second time frames; controlling the camera of the tracking device to shoot a first image with a first exposure parameter in each of the first time frames and accordingly performing an environment detection; controlling the camera of the tracking device to shoot a second image with a second exposure parameter in each of the second time frames and accordingly performing a first specific detection, wherein the second exposure parameter is lower than the first exposure parameter.

Abstract: A smart glasses device, real-time feedback generating method, and non-transitory computer readable storage medium thereof are provided. The device determines whether a temperature change corresponding to a plurality of temperature values in a first time interval is greater than a threshold value. The device activates a image capturing device to generate at least one real-time image corresponding to a second time interval. The device generates a real-time feedback based on the at least one real-time image.

Abstract: The embodiments of the disclosure provide a method for generating a visual content, a host, and a computer readable storage medium. The method includes: in response to determining that the host has connected with a built-in computer of an accommodating space, loading a 3D model associated with the accommodating space, wherein the 3D model at least partially corresponds to a physical structure of the accommodating space; determining a host position of the host within the 3D model and accordingly determining an object position of a predetermined object in the 3D model; and generating the visual content via combining a virtual object with the predetermined object.

Abstract: A contact lens device includes a hydrogel substrate, a first conductive element, a second conductive element, an EO (Electro-Optical) crystal element, a light source, a light waveguide, a light sensor, and a processor. The first conductive element is disposed on the hydrogel substrate. The second conductive element is disposed on the hydrogel substrate. The EO crystal element is disposed between the first conductive element and the second conductive element. The EO crystal element is affected by a human electric field. The light source transmits an incident light signal. The EO crystal element transmits back a reflected light signal according to the incident light signal. The light waveguide respectively guides the incident light signal and the reflected light signal. The light sensor receives the reflected light signal from the light waveguide. The processor can obtain the relative information of the human electric field according to the reflected light signal.

Abstract: A head mounted device includes a body, a first bracket, a second bracket, a first elastic sheet, and a second elastic sheet. The first bracket and a second bracket are respectively connected to opposite sides of the body. The first elastic piece is rotatably connected to a side of the first bracket away from the body. The second elastic sheet is rotatably connected to a side of the second bracket away from the body.

Abstract: The embodiments of the disclosure provide a method for hand tracking. The method includes following steps. A first image of a hand is obtained through a head-mounted device. A first pose of a first part of the hand is determined through a processor based on the first image. A second image of the hand is obtained through a hand-held device. A second pose of a second part of the hand is determined through a processor based on the first image. The first part and the second part complementarily form an entirety of the hand. A gesture of the hand is determined through the processor based on the first pose and the second pose.