A vector road change detection method and device based on similarity measure
A similarity measurement and change detection technology, applied in image analysis, image enhancement, instruments, etc., can solve the problems of poor applicability and low accuracy of road change detection.
Active Publication Date: 2021-03-19
PLA STRATEGIC SUPPORT FORCE INFORMATION ENG UNIV PLA SSF IEU
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[0004] The purpose of the present invention is to provide a vector road change detection method based on similarity measure to solve the problems of low accuracy and poor applicability of road change detection; the present invention also provides a road change detection method based on similarity measure device
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[0066] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0067] Embodiment of the vector road change detection method based on similarity measure in the present invention
[0068] The present invention first preprocesses the old and new road network data, reconstructs the network topological relationship, corrects topological errors, and extracts road links (stroke); then uses a buffer method based on consistency constraints to search for matching candidate sets of roads to be matched; and then The spatial similarity evaluation model is used to determine the road entity with the same name; finally, the characteristic index difference analysis of the road to be detected is carried out to determine whether there is a change in the road.
[0069] 1. Data preprocessing
[0070] Perform quality checks on the data, reconstruct road topological relationships, and correct topological errors. According t...
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The invention relates to a vector road change detection method and device based on similarity measurement, and belongs to the technical field of vector map database dynamic update. The present invention first reconstructs the topological relationship of the road data set to be detected, extracts the road links, and determines the radian of the road contained in the road links; then uses the buffer method based on the consistency constraint to search for the matching candidate set of the road to be matched; The geometric features of the similarity evaluation model are established, and the evaluation model is used to select a road object with the highest similarity from the matching candidate set as the matching object of the road to be matched; finally, compare the feature difference between the road with the same name and the road to be matched to determine Match road changes. The invention accurately detects which features of road entities with the same name have changed by calculating the feature difference performance between roads, provides guarantee for the extraction of change information and the implementation of update operations, and has high application value.
Description
technical field [0001] The invention relates to a vector road change detection method and device based on similarity measurement, and belongs to the technical field of vector map database dynamic update. Background technique [0002] Road elements are the main elements in the topographic map, and they are also the elements with the most prominent changes. In order to ensure the current situation of road data, the road data must be updated in real time. In the incremental update of the road network, what changes occur in the road entity, how to detect and how to describe these changes are the key issues in the road network update, which directly affect the storage organization of change information, incremental information collection, and update processing , Change information analysis and release efficiency and level. [0003] At present, some scholars have carried out related research on the detection and expression of change information. Zhu Huaji, Chen Jun, etc. propose...
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IPC IPC(8): G06T7/00G06T7/60G06K9/62
CPCG06T7/0002G06T7/60G06T2207/30256G06F18/22
Inventor 翟仁健武芳王昊闫浩文朱丽巩现勇行瑞星
Owner PLA STRATEGIC SUPPORT FORCE INFORMATION ENG UNIV PLA SSF IEU