Abstract: An encoding method, a decoding method, and a device for point cloud compression are provided. The encoding method includes the following. Point cloud data corresponding to a first frame is obtained, and is distinguished into a global point cloud set and at least one object point cloud set according to a reference frame. The object point cloud set corresponds to at least one reference object point cloud set. A global dynamic model corresponding to the global point cloud set is calculated and an object dynamic model corresponding to the object point cloud set is calculated. A bitstream is generated. The bitstream includes the global point cloud set, the global dynamic model corresponding to the global point cloud set, a serial number of each object point in the reference object point cloud set, and the object dynamic model corresponding to the object point cloud set.

Abstract: A mobile device includes a housing, a first radiation element, a second radiation element, a third radiation element, a first switch element, and a second switch element. The first radiation element has a first feeding point. The second radiation element has a second feeding point. The first radiation element, the second radiation element, and the third radiation element are distributed over the housing. The first switch element is closed or open, so as to selectively couple the first radiation element to the third radiation element. The second switch element is closed or open, so as to selectively couple the second radiation element to the third radiation element. An antenna structure is formed by the first radiation element, the second radiation element, and the third radiation element.

Abstract: In one general aspect, a method can include triggering display of a virtual environment in a head mounted display (HMD) device operating in a physical environment, triggering display of a first virtual object representing a second virtual object, the first virtual object having a size smaller than a size of the second virtual object, receiving an indication of an interaction of a user with the first virtual object, the user having a first size larger than the size of the first virtual object, and triggering an interaction with the second virtual object in response to an interaction with the first virtual object, the user having a second size larger than the first size when interacting with the second virtual object.

Abstract: In a system for moving, or dragging, a virtual reality environment, a user wearing a head mounted display (HMD) device may be at a first physical position in a physical space, corresponding to a first virtual position in the virtual environment. The user may select a second virtual position in the virtual environment by, for example, manipulation of a handheld electronic device operably coupled to the HMD. The system may construct a three dimensional complex proxy surface based on the first and second virtual positions, and may move the virtual elements of the virtual environment along the proxy surface. This movement of the virtual environment may be perceived by the user as a move from the first virtual position to the second virtual position, although the user may remain at the first physical position within the physical space.

Abstract: In a control system for navigating in a virtual reality environment, a user may select a virtual feature in the virtual environment, and set an anchor point on the selected feature. The user may then move, or adjust position, relative to the feature, and/or move and/or scale the feature in the virtual environment, maintaining the portions of the feature at the set anchor point within the user's field of view of the virtual environment.

Abstract: In a system for moving, or dragging, a virtual reality environment, a user wearing a head mounted display (HMD) device may be at a first physical position in a physical space, corresponding to a first virtual position in the virtual environment. The user may select a second virtual position in the virtual environment by, for example, manipulation of a handheld electronic device operably coupled to the HMD. The system may construct a three dimensional complex proxy surface based on the first and second virtual positions, and may move the virtual elements of the virtual environment along the proxy surface. This movement of the virtual environment may be perceived by the user as a move from the first virtual position to the second virtual position, although the user may remain at the first physical position within the physical space.

Abstract: In one general aspect, a method can include triggering display of a virtual environment in a head mounted display (HMD) device operating in a physical environment, triggering display of a first virtual object representing a second virtual object, the first virtual object having a size smaller than a size of the second virtual object, receiving an indication of an interaction of a user with the first virtual object, the user having a first size larger than the size of the first virtual object, and triggering an interaction with the second virtual object in response to an interaction with the first virtual object, the user having a second size larger than the first size when interacting with the second virtual object.

Abstract: In a control system for navigating in a virtual reality environment, a user may select a virtual feature in the virtual environment, and set an anchor point on the selected feature. The user may then move, or adjust position, relative to the feature, and/or move and/or scale the feature in the virtual environment, maintaining the portions of the feature at the set anchor point within the user's field of view of the virtual environment.