Abstract: The technology of this application relates to a pose determining method. The method includes obtaining a first image, when first pose information determined based on the first image meets a pose anomaly condition, displaying prompt information for indicating to photograph a target object, and obtaining, by using the target object in the target image captured by a user based on the prompt, second pose information that does not meet the pose anomaly condition. When high-precision pose information cannot be determined, pose positioning is implemented by using the target object in a scenario. In addition, in a process of determining pose information of a terminal device, prompt information for indicating the user to photograph the target object is displayed, and the user is indicated to photograph the target object, thereby avoiding that the user does not know how to operate or scan an invalid target object.

Abstract: Methods, devices, and systems for digital space management in virtual reality and augmented reality are described. A method can include a terminal that logs in to a preset application based on a first user identifier, presents a first interface, where the first interface includes a virtual space registration option. In response to an enabling operation of a user for the virtual space registration option, the terminal photographs a first scene to obtain a preview stream, obtains a target geometry, and sends the first user identifier, the preview stream, and the target geometry to a server. The preview stream and the target geometry are used to determine a target virtual space in which a user with the first user identifier has virtual content editing permission in a first virtual space. The first virtual space is a virtual space corresponding to a real world including the first scene. The target geometry is used to represent a form of the target virtual space.

Abstract: This application relates to the field of pose detection technologies, and discloses a method and an apparatus for obtaining pose information, a method and an apparatus for determining symmetry of an object, and a storage medium. The method includes: obtaining a rotational symmetry degree of freedom of a target object (901), obtaining pose information of the target object (902), and adjusting the pose information of the target object based on the rotational symmetry degree of freedom to obtain adjusted pose information (903), where the adjusted pose information is used for displaying a virtual object, and the virtual object is an object associated with the target object.

Abstract: The technology of this application relates to a pose determining method. The method includes obtaining a first image, when first pose information determined based on the first image meets a pose anomaly condition, displaying prompt information for indicating to photograph a target object, and obtaining, by using the target object in the target image captured by a user based on the prompt, second pose information that does not meet the pose anomaly condition. When high-precision pose information cannot be determined, pose positioning is implemented by using the target object in a scenario. In addition, in a process of determining pose information of a terminal device, prompt information for indicating the user to photograph the target object is displayed, and the user is indicated to photograph the target object, thereby avoiding that the user does not know how to operate or scan an invalid target object.

Abstract: Methods, devices, and systems for digital space management in virtual reality and augmented reality are described. A method can include a terminal that logs in to a preset application based on a first user identifier, presents a first interface, where the first interface includes a virtual space registration option. In response to an enabling operation of a user for the virtual space registration option, the terminal photographs a first scene to obtain a preview stream, obtains a target geometry, and sends the first user identifier, the preview stream, and the target geometry to a server. The preview stream and the target geometry are used to determine a target virtual space in which a user with the first user identifier has virtual content editing permission in a first virtual space. The first virtual space is a virtual space corresponding to a real world including the first scene. The target geometry is used to represent a form of the target virtual space.

Abstract: This application relates to the field of pose detection technologies, and discloses a method and an apparatus for obtaining pose information, a method and an apparatus for determining symmetry of an object, and a storage medium. The method includes: obtaining a rotational symmetry degree of freedom of a target object (901), obtaining pose information of the target object (902), and adjusting the pose information of the target object based on the rotational symmetry degree of freedom to obtain adjusted pose information (903), where the adjusted pose information is used for displaying a virtual object, and the virtual object is an object associated with the target object.

Abstract: A method for analyzing a shape of a 3D model based on perceptive information comprises: decomposing the shape of the 3D model to generate decomposition results; and extracting a skeleton from the decomposition results. This invention can be applied to shape decomposition of objects having different shapes. The 3D models can be regular or with noise, containing either multiple annular structures or no annular structure. The decomposition method of this invention is not sensitive to noise, and the segmentation speed is high and accurate. The segmentation result of the invention can be widely applied to different branches of computer graphics and computer vision, such as computer animation, modeling, shape analysis, shape classification, object identification, etc. The skeleton extracted from the decomposition result and the following shape semantic description diagram can he applied to 3D model retrieval, model semantic analysis and so on.

Abstract: The present invention comprises a method for global parameterization and quadrangulation on point cloud. The method comprises: (a) computing and smoothing principal direction field over the point cloud; (b) performing a global parameterization of the point cloud; (c) constructing a quad mesh from the resultant parameterization. The present method is fully automatic, and can be used to all point models with any genus values. This approach can be used to many applications, such as texture mapping, surface fitting and shape analysis.