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A dsm automatic comparison system based on aerial photography measurement

An automatic comparison and aerial photo technology, applied in the field of aerial photography measurement, can solve the problems of low efficiency, high orthophoto image quality requirements, and many omissions, so as to improve comparison efficiency, improve efficiency and comparison accuracy, and improve accuracy rate effect

Active Publication Date: 2020-08-28
常州市新翼空间信息科技有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. Low efficiency. For large-scale inspection and comparison, the efficiency of manual identification is low;
[0005] 2. There are many omissions, and manual comparison is easy to miss some small and unobvious illegal buildings;
[0006] 3. The quality requirements for orthophoto images are high, and very clear orthophoto images are required for inspection and comparison;

Method used

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  • A dsm automatic comparison system based on aerial photography measurement
  • A dsm automatic comparison system based on aerial photography measurement
  • A dsm automatic comparison system based on aerial photography measurement

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Embodiment

[0081] The elevation data extracted by the elevation extraction module is H to the extracted elevation data of the previous aerial photographs, and the elevation data extracted by the elevation extraction module to the current aerial photographs is I, and when the elevation conversion module converts the elevation data, the data The summarization unit sorts the elevation data in order, and sums up the data with the same elevation to form a collection of elevation data of previous aerial photos and the collection of current aerial photo elevation data , the vector conversion unit converts the collection of the elevation data of previous aerial photos into and the collection of current aerial photo elevation data Convert into vector data to form a vector data set of previous flight photos and the current aerial photo vector data set , the data location unit will vector Positioned on a layer with the same size as the clipped past air photos, the data positioning unit w...

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Abstract

The invention discloses a DSM automatic comparison system based on aerial photography measurement, which belongs to the technical field of aerial photography measurement. The elevation data of the two-phase aerial photos processed by the image processing module is extracted, the elevation conversion module is used to convert the elevation data of the two-phase aerial photos extracted by the elevation extraction module into a vector layer, and the layer overlay module is used for the two-phase aerial photos The vector layer of the photo is superimposed, and the comparison and labeling module is used to mark the area that has changed in the vector layer of the two-phase aerial photo. The time and manpower input for the comparison can more accurately detect the existence of illegal buildings. The comparison is more pertinent, and the effect of buildings with different areas can be screened by adjusting the value of each value.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06K9/62G06K9/48G06T7/246
CPCG06T7/248G06T2207/10032G06V20/13G06V10/46G06F18/22
Inventor 王垒门红宇郑佳磊
Owner 常州市新翼空间信息科技有限公司
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