DSM automatic comparison system based on aerial photography measurement

An automatic comparison and comparison technology, which is applied in the field of aerial photography measurement, can solve the problems of many omissions, low efficiency, and high quality requirements of orthophoto images, so as to improve accuracy, improve comparison efficiency, improve efficiency and comparison accuracy Effect
CN111401345AActive Publication Date: 2020-07-10常州市新翼空间信息科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
常州市新翼空间信息科技有限公司
Publication Date
2020-07-10

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Abstract

The invention discloses a DSM automatic comparison system based on aerial photography measurement, and belongs to the technical field of aerial photography measurement. The system comprises an elevation extraction module, an elevation conversion module, a layer superposition module and a comparison labeling module; the elevation extraction module is used for extracting elevation data of the two stages of aerial photos processed by the aerial photo processing module; the elevation conversion module is used for converting the elevation data of the two-stage aerial photo extracted by the elevation extraction module into a vector layer; the layer superposition module is used for performing superposition processing on vector layers of the two stages of aerial photos; the comparison labeling module is used for labeling areas with changes in the two-stage aerial photo vector layers. According to the invention, the method is scientific and reasonable, is suitable for large-scale aerial photo inspection and comparison, greatly shortens the inspection and comparison time, greatly reduces the manpower investment, can more accurately discover the existence of illegal buildings, is higher in comparison pertinence, and can achieve the effect of screening buildings with different areas through the adjustment of various numerical values.
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Description

technical field

[0001] The invention relates to the technical field of aerial photography measurement, in particular to a DSM automatic comparison system based on aerial photography measurement. Background technique

[0002] Aerial measurement refers to the use of drones and aerial cameras to take aerial photos of a certain area, and to make statistics and understand the buildings in the area through the aerial photos, and to compare the aerial photos with the corresponding aerial photos of the area in the past By comparison, you can confirm the illegal buildings in the area, and you can clearly understand whether there is any illegal use of national land;

[0003] At present, the inspection and comparison mainly uses the orthophoto aerial photos of two phases to detect illegal construction and other behaviors through manual identification. Due to the limitations of manual identification, the results of the inspection and comparison have the following shortcomings:

[0004] ...

Claims

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