Abstract: Systems and methods are described for creating three dimensional models of building objects by creating a point cloud from a plurality of input images, defining edges of the building object's surfaces represented by the point cloud, creating simplified geometries of the building object's surfaces and constructing a building model based on the simplified geometries. Input images may include ground, orthographic, or oblique images. The resultant model may be scaled according to correlation with select image types and textured.

Abstract: The code block segmentation method includes: a base station determining whether to use the maximum length of a first pre-set information bit for code block segmentation or to use the maximum length of a second pre-set information bit for code block segmentation; if it is determined to use the maximum length of the first pre-set information bit for code block segmentation, the base station segmenting a transport block into one or more segments by taking the maximum length of the first pre-set information bit as an upper limit; and if it is determined to use the maximum length of the second pre-set information bit for code block segmentation, the base station segmenting a transport block into one or more segments by taking the maximum length of the second pre-set information bit as an upper limit, wherein the maximum length of the first pre-set information bit is greater than the maximum length of the second pre-set information bit.

Abstract: An encoding method and apparatus, and a computer storage medium, wherein same are used to improve the LDPC encoding performance, and are thus suitable for 5G systems. The encoding method comprises: determining a base graph of a low density parity check code (LDPC) matrix, and constructing a cyclic coefficient index matrix; determining a sub-cyclic matrix according to the cyclic coefficient index matrix; and carrying out LDPC encoding according to the sub-cyclic matrix and the base graph.

Abstract: The present application is for use in reducing the overhead of transmitting beam information between a transmitting end and a receiving end. Disclosed are a method for indicating and determining beam information, a device, and a communication system. The method provided in the present application for indicating beam information comprises: a transmitting end determines a first transmission beam that needs to be used for transmission with a receiving end; the transmitting end determines, on the basis of first mapping relations between beam pair (BPL) identifiers and transmission beams, a first BPL identifier corresponding to the first transmission beam, where the receiving end is provided with second mapping relations between the BPL identifiers and reception beams; the transmitting end transmits the first BPL identifier to the receiving end; and the transmitting end uses the first transmission beam to transmit a signal to the receiving end.

Abstract: In one embodiment, a method includes receiving an image associated with an object in an environment, the image being captured by sensors associated with a vehicle, generating a feature representation of the image, determining a potential ground control point associated with the object based on the feature representation of the image, determining a predetermined location reading based on the potential ground control point, calculating a differential relative to the predetermined location reading based on the potential ground control point, and determining a location of the vehicle based on the differential and the predetermined location reading based on the potential ground control point.

Abstract: Disclosed are an uplink and downlink transmission resource allocation method and device. In this application, a first channel is transmitted on a specified time-frequency resource within a first channel transmitting period according to the first channel transmitting period. The first channel is at least used for notifying allocation information of an uplink transmission resource and a downlink transmission resource within the first channel transmitting period or an effective time period of the first channel, so that dynamic partitioning and notification of the uplink transmission resource and the downlink transmission resource are achieved.

Abstract: A method for transmitting a synchronization sequence, and a method and a device for synchronization detection are provided, the method for transmitting the synchronization sequence including: setting a target synchronization sequence with good autocorrelation characteristic, where at least one segment of sequence truncated in a time domain or a frequency domain of the target synchronization sequence is a sub-synchronization sequence, and the sub-synchronization sequence has good autocorrelation characteristic and the sub-synchronization sequences have good cross-correlation between each other; and transmitting the target synchronization sequence to a user equipment.

Abstract: Systems, methods, and non-transitory computer-readable media can determine sensor data captured by at least one sensor of a vehicle while navigating an environment over a period of time. Information describing one or more agents associated with the environment during the period of time can be determined based at least in part on the captured sensor data. A schema-based encoding describing the environment during the period of time can be generated based at least in part on the determined information and a scenario schema, wherein the schema-based encoding provides a structured representation of the environment during the period of time.

Abstract: Systems, methods, and non-transitory computer-readable media can access a first set of schema-based encodings associated with a first environment, wherein a schema-based encoding provides a structured representation of an environment based on a scenario schema. First information representing scenario information associated with the first environment can be generated based at least in part on the first set of schema-based encodings. One or more attributes for the first environment can be determined based at least in part the first information.

Abstract: Systems, methods, and non-transitory computer-readable media can access a plurality of schema-based encodings providing a structured representation of an environment captured by one or more sensors associated with a plurality of vehicles traveling through the environment. The plurality of schema-based encodings can be clustered into one or more clusters of schema-based encodings. At least one scenario associated with the environment can be determined based at least in part on the one or more clusters of schema-based encodings.

Abstract: Disclosed are an encoding method and apparatus, an electronic device and a storage medium, wherein same are used for solving the problem in the prior art of inflexibility of the segmentation of a sequence to be encoded. The method comprises: according to the length and a transmission code rate of a sequence to be encoded, determining the target number of segments of the sequence to be encoded; according to the target number, segmenting the sequence to be encoded; and encoding each sub-sequence after the segmentation, and cascading same after encoding. In the embodiments of the present application, according to the length and a transmission code rate of a sequence to be encoded, the target number of segments of the sequence to be encoded is determined, and according to the target number, the sequence to be encoded is segmented. The sequence to be encoded is flexibly segmented, thus improving the encoding performance.

Abstract: Systems and methods are described for creating three dimensional models of building objects by creating a point cloud from a plurality of input images, defining edges of the building object's surfaces represented by the point cloud, creating simplified geometries of the building object's surfaces and constructing a building model based on the simplified geometries. Input images may include ground, orthographic, or oblique images. The resultant model may be scaled according to correlation with select image types and textured.

Abstract: A low density parity check code transmission method and device, for use in improving the anti-burst-error capability of a low density parity check code. The method provided by the present application comprises: an interleaver changes the sequence of bit streams of a low density parity check code according to a preset rule, and outputs to a modulator the low density parity check code the sequence of bit streams of which is changed; the modulator modulates the low density parity check code the sequence of bit streams of which is changed and then sends the modulated low density parity check code to a receive end by using a channel.

Abstract: In one embodiment, a method includes training an image localization model for determining an adjusted location reading for a vehicle based on its location reading and the associated image. The method further includes updating a location associated with the vehicle using the adjusted location reading. The training of the image localization model includes generating feature representations of a number of training images, and learning a relationship between the feature representations and differentials between a number of raw location readings and their respective reference location readings.

Abstract: Disclosed are a polar code encoding method and device and a polar code decoding method and device. The polar code encoding method comprises: reading a known first sequence; and for an information sequence to be encoded, combining the information sequence with the first sequence, and performing polar code encoding on the combined sequence. In the polar code encoding method provided by embodiments of the present disclosure, a known first sequence is read and polar code encoding is performed on an information sequence and the first sequence. Thus, polar code encoding on the information sequence to be encoded is implemented, and a new polar code encoding solution is provided.

Abstract: Disclosed are channel state information feedback and data transmission method and apparatus. The method comprises: determining a first codebook on a base station side, the first codebook being a set composed of precoding matrixes; determining a first codebook on a terminal side, the first codebook being a set composed of precoding matrixes; calculating channel state information according to the first codebooks; and feeding back the channel state information to a base station. Data transmission is performed on the terminal on the base station side, and in the data transmission process, some or all of the precoding matrixes in the first codebooks are utilized to perform processing, over a resource allocated to a terminal, on data to be transmitted. By using the present application, precoding matrixes needed for open-loop AMMO calculation can be determined, traversing of whole space is avoided, difficulties in system design and implementation are reduced, and the system performance is improved.

Abstract: A system and method is provided for generating textured 3D building models from ground-level imagery. Ground-level images for the sides/corners of building objects are collected for identification of key architectural features, corresponding key façade geometry planes, and generation of a 3D building façade geometry. The 3D building model is properly geo-positioned, scaled and textured.

Abstract: Systems and methods are described for adjusting planar geometry derived from point cloud data associated with a building object by identifying major aspects like vertices and edges of the underlying structure within the point cloud and adjusting an average planar fit for simplified geometries created from the point cloud. Combining the planar geometry or point cloud with orthogonal or street level views improves accuracy and use cases of the planar geometry.

Abstract: Disclosed are a beam training method and device, and a communication system, used for reducing the overheads of a beam training process between a transmitting end and a receiving end. The present application provides a beam training method, the method comprising: a transmitting end determining a first mapping relationship between BPL identifiers and transmission beams; the transmitting end configuring a first reference signal resource for a receiving end, and transmitting configuration information concerning the first reference signal resource to the receiving end, the configuration information carrying a first BPL identifier.

Abstract: A polarized coding method and apparatus, an electronic device, and a storage medium are disclosed. The method comprises: determining fragmentation policies corresponding to sequences to be coded according to the lengths of the sequences to be coded and transmission rates; and performing corresponding processing on the sequences to be coded according to the segmentation policies, and performing polarized coding on the processed sequences to be coded. In embodiments of the present invention, fragmentation policies corresponding to sequences to be coded are determined according to the lengths of the sequences to be coded and transmission rates; and corresponding segmentation polices are determined according to the to-be-coded sequences having different lengths and different transmission rates, thereby ensuring performance of an uplink control channel.