17 results about "Mobile mapping" patented technology

The invention relates to the technical field of forest fire management, in particular to an integrated forest fire intelligent analysis method and system. The system comprises a background service system, a central intelligent analysis system and a mobile intelligent analysis system. The background service system is deployed in a cloud computing server cluster and is used for uniformly storing personnel information, fire scene information and geographic information data and realizing multi-source data fusion and authority management through a standardized API (Application Program Interface); the central intelligent analysis system is deployed in a high-performance computer, integrates a forest fire danger auxiliary decision-making model, a forest fire spreading trend prediction model, a force distribution dynamic display module and a collaborative plotting module, and supports fire spreading prediction and real-time decision-making instruction issuing based on multi-dimensional data such as weather, terrain and vegetation; the mobile intelligent analysis system realizes fire spreading trend analysis, mobile plotting and instruction receiving in an offline environment, supports offline data caching and calling in an emergency scene, and effectively improves forest fire emergency response efficiency and resource scheduling accuracy.

Satellite images have inherent geo-positional errors of orders a few meters. Corrections are achieved by adjusting a sensor model which maps ground coordinates of control features into image coordinates and establishing a correspondence between the ground and image features, in this case a road network. The ground coordinates are obtained from mobile pose points. To adjust the sensor model we rely on the fact that the roads are typically much more uniform than surrounding features, and therefore have smaller entropy. The sensor model is adjusted so that the image pixels, obtained from projecting ground coordinates of the mobile pose points onto the image, minimize the entropy of the pixels that represent the road network.

The invention relates to a scanning mapping method and device, and belongs to the technical field of mobile mapping and three-dimensional reconstruction, the method is applied to a scanning mapping device, the device comprises a laser radar, an IMU and a fisheye camera, and the method comprises the following steps: obtaining point cloud data obtained by scanning of the laser radar at each moment, measurement data of the IMU and image data shot by the fisheye camera; determining pose data of the scanning and mapping device at each moment according to the point cloud data, the measurement data and the image data at each moment; performing coordinate conversion processing on the point cloud data at each moment according to the pose data at each moment to obtain coordinates of the point cloud data in a global coordinate system; and constructing a target map according to the coordinates of the point cloud data in the global coordinate system. The pose of the scanning mapping device is determined according to the observation data of the laser radar, the IMU and the fisheye camera, and the pose robustness can be improved. And mapping is carried out according to the pose, so that the mapping accuracy can be improved.

The embodiment of the invention provides a mobile mapping system and a time synchronization method, and is applied to the technical field of positioning and map construction. The system comprises a device to be synchronized, an industrial personal computer and a controller. The controller is used for determining a global time reference and determining a reference time point for acquiring a hardware trigger signal; the to-be-synchronized device is used for acquiring data according to the hardware trigger signal; and the industrial personal computer is used for associating the data acquisition time of the to-be-synchronized equipment with the global time reference according to the global time reference and a receiving time point for receiving the data sent by the to-be-synchronized equipment. The time service mode depends on a hardware trigger signal, and effective time service of data acquired by the multi-source sensor can still be realized in a scene with weak GNSS signals or without GNSS signals, so that the synchronization precision of data acquisition time of the multi-source sensor is improved.

1. The name of this design product: Vehicle-mounted mobile measuring device. 2. Application of this design product: used for mobile mapping for high-precision mapping, terrain mapping, urban modeling, highway surveys, etc. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

A system and method for mapping indoor spaces including a mobile mapping device having a camera; a plan database configured to store 2-D floorplans; and a processor configured to integrate a selected floorplan from the plan database with object data received from the mobile mapping device to create a mountable evacuation sign of a venue. The processor is configured to recognise objects from an image from the camera and anchor the recognised object within a 2-D floorplan.

The present application relates to mobile mapping and wearable computing technology field, disclose a kind of head-mounted laser radar point cloud matching method, device, including receiving original laser point cloud data stream and inertial measurement data;Read human cervical kinematic chain parameter;Continuous time trajectory model is established using cumulative B spline function;According to current trajectory state, human cervical joint configuration vector is solved inversely;Calculate analytical geometry jacobian matrix;Analytical geometry jacobian matrix is used to construct manifold tangent space projection operator;Perform joint constraint optimization based on tangent space projection, construct joint constraint jacobian matrix using manifold tangent space projection operator and solve incremental equation, and B spline control point is iteratively updated.The present application is strictly limited in human cervical kinematic manifold by using manifold tangent space projection operator to update trajectory, effectively filter the motion noise that violates physiological structure, improve the physical consistency and precision of pose solution in complex motion scene.

Systems and methods for performing accurate, high-resolution forest inventories within a forest environment. The systems and methods preferably make use of an unmanned aerial vehicle and a ground-based carrier for acquiring first and second initial data frames that are obtained based on point cloud data scanned by a LIDAR mobile mapping system having substantially continuous accessibility to a Global Navigation Satellite System (GNSS) signal.

The invention provides a mobile mapping method, a self-moving device and a storage medium. The method comprises the following steps: planning a first regular moving path in a known area in a map of a working environment, and moving along the first regular moving path to carry out environment exploration; in the moving process, the map is updated according to the explored environment information, and a second regular moving path connected with the first regular moving path is planned according to the updated map; if a to-be-explored area in which a second rule moving path cannot be planned exists in the moving direction and the to-be-explored area is connected with an unknown area in the map, determining a first leading edge position on the boundary of the to-be-explored area and the unknown area; and planning a first navigation path from the current position to the first leading edge position, and moving along the first navigation path for environment exploration. By utilizing the method, the problem of mapping omission caused by the fact that a path planning algorithm cannot generate a regular moving path can be effectively avoided, so that the integrity of the map can be ensured.

The embodiment of the invention relates to a pre-stack gather event leveling method and device for mobile mapping. The method comprises the following steps: acquiring an original pre-stack gather to be subjected to event leveling; calculating a first leveling amount of adjacent traces in the original pre-stack gather; generating a local leveling gather based on the first leveling amount and the original pre-stack gather; calculating a second leveling amount of adjacent traces in the local leveling trace set; on the basis of a preset rule, moving mapping leveling is carried out on the second leveling amount; and calculating a time difference correction value after leveling and preset well-seismic matching calibration to complete pre-stack gather event leveling. In this way, the gather data is subjected to leveling processing and event leveling, second-class AVO features are reserved, and meanwhile it is ensured that no stretching distortion exists; the method has an accurate and good leveling effect for the gather with the second-class AVO characteristics, and ensures that the energy of the leveled gather is focused, and the correction value is reasonable and distortionless.

1. The name of the design product: vehicle-mounted mobile measurement equipment. 2. The use of the design product: the design product is used for high-precision map, topographic surveying and mapping, city modeling, highway surveying and other mobile mapping. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

To provide a separation determination device, separation determination system, separation determination method, and program capable of performing separation determination over a wide range with high accuracy in a shorter time.SOLUTION: A separation determination device 30 that determines separation between an infrastructure IN and a separation target object O, comprises: a measurement information acquisition unit 311 that acquires a plurality of pieces of image data obtained by measurement of a mobile mapping system 10 and three-dimensional point cloud data associated with the plurality of pieces of image data; a determination image identification unit 313 that identifies, from among the plurality of pieces of image data, determination image data including the infrastructure IN and the separation target object O; and a separation determination unit 316 that determines the separation between the infrastructure IN and the separation target object O on the basis of the determination image data identified by the determination image identification unit 313 and the three-dimensional point cloud data associated with the determination image data.SELECTED DRAWING: Figure 3

A system and method for mapping indoor spaces including a mobile mapping device having a camera; a plan database configured to store 2-D floorplans; and a processor configured to integrate a selected floorplan from the plan database with object data received from the mobile mapping device to create a mountable evacuation sign of a venue. The processor is configured to recognise objects from an image from the camera and anchor the recognised object within a 2-D floorplan.

The embodiment of the present disclosure discloses a mobile terminal real-time surveying and mapping verification system and method based on a total station and RTK. Real-time communication between a total station or an RTK device and a mobile terminal is realized through a Bluetooth module. A coordinate conversion engine built in the mobile terminal automatically completes the conversion of measurement data to a map coordinate system, and real-time superimposed display of measurement points on a vector map and a high-definition image map is realized. A design drawing is synchronously loaded for on-site comparison. The system calculates the deviation value of the measured point and the design point in real time, triggers a three-level early warning according to the deviation degree, and prompts the possible error causes. After the measurement is completed, a verification report containing the measured coordinates, the design coordinates, the deviation value and the map screenshot is automatically generated. The present disclosure deeply integrates traditional measurement and mobile mapping technology, realizes the whole-process closed loop of measurement and verification, solves the problems of complicated coordinate conversion and disconnection between design and real scene, and significantly improves the work efficiency.

The present application relates to the technical field of forest fire management, and particularly relates to an integrated forest fire intelligent analysis method and system. The system comprises a background service system, a central intelligent analysis system and a mobile intelligent analysis system. The background service system is deployed on a cloud computing server cluster, is used for uniformly storing personnel information, fire scene information and geographic information data, and realizes multi-source data fusion and permission management through a standardized API. The central intelligent analysis system is deployed on a high-performance computer, integrates a forest fire risk auxiliary decision-making model, a forest fire spread trend prediction model, a power distribution dynamic display module and a collaborative mapping module, supports fire spread prediction and real-time decision instruction issuing based on multi-dimensional data such as meteorology, terrain and vegetation, and realizes fire spread trend analysis, mobile mapping and instruction receiving in an offline environment, supports offline data caching and calling in an emergency scene, and effectively improves the efficiency of forest fire emergency response and the accuracy of resource scheduling.

The present invention discloses a ground-based, unmanned aerial vehicle (UAV) collaborative positioning method and device suitable for forest environments. The method first acquires lidar data and combined navigation data obtained from drone scanning to obtain a forest point cloud. This point cloud is then preprocessed and subjected to vertical feature extraction, trunk point clustering, trunk point fitting, and trunk cluster center point clustering to obtain the tree locations for the drone's prior map. Lidar data from a ground-based mobile device is then acquired, and a local point cloud map is constructed using a SLAM algorithm. The same operations are performed on the local point cloud map to obtain the tree locations for the local map. The local map is then fused with the UAV's georeferenced three-dimensional point cloud to address the positioning issues of ground mobile mapping systems. This method utilizes the natural distribution of trees in a forest environment for positioning, eliminating the need for deploying artificial reference targets in the field. The method also provides information on the availability and uncertainty of the positioning results, facilitating integration with other positioning technologies.

The present invention relates to the field of information visualization. In particular, it relates to a method and system for visualizing coal mine information, which includes the following steps: obtaining a full-scale mining area monitoring video; performing cache delay optimization and worker visual calibration, and extracting multiple worker position boundary boxes; identifying key reference points in the mining area based on the full-scale mining area monitoring video, and performing three-dimensional structural modeling to construct a three-dimensional structural model of the mining area; performing real-time dynamic tracking based on multiple worker position boundary boxes, and performing instant mobile mapping of the three-dimensional structural model of the mining area to construct a real-time mining area twin model; obtaining multi-dimensional environmental monitoring parameters of the mining area, and performing toxic gas concentration fluctuation fitting and hazardous gas area positioning, and marking hazardous gas areas. The present invention realizes real-time and dynamic visualization of coal mine information, and improves the operational safety of the mining area.