Abstract: An encoding method and apparatus, a decoding method and apparatus, and a device. The encoding method includes: reconstructing, on an encoder side, geometry information and connectivity information for a target three-dimensional mesh based on an encoding result of the geometry information and connectivity information of the target three-dimensional mesh; determining, on the encoder side based on the reconstructed geometry information and connectivity information, N predicted texture coordinates of each vertex in the target three-dimensional mesh by means of predicting vertices from multiple encoded triangles, where N is a positive integer greater than 1; and encoding, on the encoder side, a texture coordinate residual of each vertex; where the texture coordinate residual of the vertex is determined based on the N predicted texture coordinates of the vertex.

Abstract: This application discloses a lossless encoding method and apparatus, a lossless decoding method and apparatus, and a device, pertaining to the field of encoding and decoding technologies. The lossless decoding method in embodiments of this application includes: traversing, by an encoder side, a target mesh and obtaining geometry coordinates of each vertex in the target mesh; determining, by the encoder side, vertices with same geometry coordinates as duplicate vertices; merging, by the encoder side, the duplicate vertices in the target mesh to obtain a first mesh; and performing, by the encoder side, lossless encoding on the first mesh to generate a target bitstream.

Abstract: This application discloses an encoding method and apparatus, a decoding method and apparatus, and a device.

Abstract: An encoding method includes: obtaining original point cloud data; transforming coordinates of the original point cloud data to obtain a coordinate transformation residual; establishing a relationship between azimuth information of a point cloud and the coordinate transformation residual; determining an encoding rule for the coordinate transformation residual based on the relationship between the azimuth information of the point cloud and the coordinate transformation residual; and encoding the coordinate transformation residual according to the encoding rule, to obtain data rate information.

Abstract: An encoding method, a decoding method, and a terminal. The encoding method includes: An encoder side encodes first information corresponding to a target three-dimensional mesh, to obtain a first bitstream. The first information is determined based on geometry information corresponding to the target three-dimensional mesh. The encoder side determines a second bitstream based on connection information corresponding to a first reconstructed mesh. The first reconstructed mesh is determined based on the first information and the target three-dimensional mesh. The encoder side determines a third bitstream based on target information and an attribute encoding manner. The target information includes attribute information corresponding to the first reconstructed mesh or includes the target three-dimensional mesh and a target texture map corresponding to the target three-dimensional mesh. The encoder side generates a target bitstream based on the first bitstream, the second bitstream, and the third bitstream.

Abstract: This application discloses an encoding method, apparatus, and device, and a decoding method, apparatus, and device, and relates to the field of encoding and decoding technologies. The encoding method includes: reconstructing, by an encoder, geometry information and a connectivity of a target three-dimensional mesh based on an encoding result for the geometry information and the connectivity of the target three-dimensional mesh; and encoding, by the encoder, texture coordinates of a vertex in the target three-dimensional mesh based on reconstructed geometry information and a reconstructed connectivity.

Abstract: A loop filtering method, a video encoding method, a video decoding method, an electronic device, and a medium are provided. The loop filtering method includes: acquiring a first reconstructed video unit processed by a loop filter; performing pixel classification on the first reconstructed video unit; determining a scale factor corresponding to each class; and performing scale adjustment on the first reconstructed video unit according to the scale factor, so as to obtain a second reconstructed video unit.

Abstract: A coding method includes quantizing, by an encoder, geometric information of a target three-dimensional mesh, to obtain first information, where the first information includes first precision geometric information, second precision geometric information, or information about a supplementary point; and encoding, by the encoder, the first information, where the first precision geometric information is quantized geometric information of the target three-dimensional mesh, the second precision geometric information is geometric information lost in the quantization process of the target three-dimensional mesh, and the information about the supplementary point is information about a point that is generated in the quantization process and that needs additional processing.

Abstract: A coding method, apparatus, and device. The coding method includes: decimating, by a encoder, a target three-dimensional mesh to obtain a decimated mesh; quantizing, by the encoder, geometric information of the decimated mesh to obtain first information, where the first information includes at least one of the following: the first precision geometric information, the second precision geometric information, and information of supplementary points; and coding, by the encoder, the first information and connectivity information of a reconstructed mesh. The reconstructed mesh is determined based on the first information. The first precision geometric information is geometric information obtained after quantization of the target three-dimensional mesh. The second precision geometric information is geometric information lost during quantization of the target three-dimensional mesh. The information of the supplementary point is information of a point generated during quantization and requiring additional processing.

Abstract: Embodiments of the present disclosure provide a method and an apparatus for video processing, and a storage medium and an electronic apparatus. The method comprises: determining a neural network loop filtering enabled flag of a reconstructed video unit; setting, based on the neural network loop filtering enabled flag, an adaptive loop filtering enabled flag for the reconstructed video unit; and signaling at least one type of the following information: filter information related to neural network loop filter of the reconstructed video unit, and filter information related to adaptive loop filter of the reconstructed video unit.

Abstract: Disclosed are a point cloud encoding and decoding method and device based on a two-dimensional regularization plane projection. The encoding method includes: acquiring original point cloud data; performing two-dimensional regularization plane projection on the original point cloud data to obtain a two-dimensional projection plane structure; obtaining a plurality of pieces of two-dimensional image information according to the two-dimensional projection plane structure; and encoding the plurality of pieces of two-dimensional image information to obtain code stream information.

Abstract: An encoding method includes: obtaining original point cloud data; obtaining depth information of a point cloud based on the original point cloud data; establishing a relationship between the depth information and azimuth information of the point cloud; and predictively encoding the azimuth information of the point cloud by using the relationship between the depth information and the azimuth information of the point cloud, to obtain coded stream information.

Abstract: A terminal supporting leakage detection and a detection method for performing leakage detection for the terminal is provided, the terminal may include: a first conductive unit, a second conductive unit, a first access end, and a second access end, wherein the first access end is configured to be connected to a ground line of a main board of the terminal through the first conductive unit and used to access a ground line of an external leakage detection apparatus, and the second access end is configured to be connected inside the terminal to a metal portion of a outer casing of the terminal through the second conductive unit and used to access a leakage test line of the leakage detection apparatus.

Abstract: A terminal supporting leakage detection and a detection method for performing leakage detection for the terminal is provided, the terminal may include: a first conductive unit, a second conductive unit, a first access end, and a second access end, wherein the first access end is configured to be connected to a ground line of a main board of the terminal through the first conductive unit and used to access a ground line of an external leakage detection apparatus, and the second access end is configured to be connected inside the terminal to a metal portion of a outer casing of the terminal through the second conductive unit and used to access a leakage test line of the leakage detection apparatus.