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Incremental farmland boundary precision calibration method and device with constraint point set registration

A technology of boundary accuracy and calibration method, applied in image enhancement, image data processing, instruments, etc., can solve the problems of difficult to widely use, high price of aerial survey drones, increased operation difficulty and operation cost, etc., and achieves the goal of improving positioning accuracy. Effect

Pending Publication Date: 2020-05-08
QIANXUN SPATIAL INTELLIGENCE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, aerial survey drones are expensive, require professional operation, and need to deploy and control a large number of ground control points to ensure accuracy, which invisibly greatly increases the difficulty and cost of the operation, which has also become a bottleneck that is difficult to be widely used.

Method used

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  • Incremental farmland boundary precision calibration method and device with constraint point set registration
  • Incremental farmland boundary precision calibration method and device with constraint point set registration
  • Incremental farmland boundary precision calibration method and device with constraint point set registration

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Embodiment 1

[0042] The present invention provides an incremental farmland boundary precision calibration method with constraint point set registration, the flow chart is as follows figure 1 As shown, it specifically includes the following steps:

[0043] Step 1, farmland boundary data export

[0044] The average positioning accuracy of satellite remote sensing images is at the meter level, that is, the deviation between the measured farmland boundaries and the farmland boundaries extracted based on satellite remote sensing images is generally at the meter level. This allows us to pair and organize the farmland boundary data extracted based on satellite remote sensing images and actual measurements based on the center of the farmland boundary and stored in the database in a reverse geocoding manner. According to the center position of the farmland obtained by actual measurement, the spatial search method can be used to search and extract the corresponding farmland boundary based on satell...

Embodiment 2

[0057] The present invention also provides an incremental farmland boundary precision calibration device with constraint point set registration, such as Figure 4 As shown, the device includes:

[0058] The farmland boundary data pairing and derivation unit is used to pair and store the data of the farmland boundary extracted based on the satellite remote sensing image and the data of the farmland boundary actually measured in the database, and export the data of the farmland boundary;

[0059] The validity verification unit of the farmland boundary is used to determine the validity of the extracted farmland boundary according to the shape similarity and regional overlap rate between the farmland boundary extracted based on the satellite remote sensing image and the farmland boundary obtained by actual measurement;

[0060] The corresponding point extraction and correction unit of the farmland boundary is used to extract the corresponding points of the farmland boundary, the f...

Embodiment 3

[0063] The present invention also provides a memory, the memory stores a computer program, and the computer program performs the following steps:

[0064] Pair and store the farmland boundary data extracted based on satellite remote sensing images with the actual measured farmland boundary data in the database, and export the farmland boundary data;

[0065] Determine the validity of the extracted farmland boundary based on the shape similarity and regional overlap rate between the farmland boundary extracted based on satellite remote sensing images and the actual measured farmland boundary;

[0066] Extract the corresponding points of the farmland boundary, the farmland boundary extracted based on the rigid body point set registration correction, and the farmland boundary extracted based on the incremental joint point set registration correction;

[0067] Store the corrected field boundaries in the database.

[0068] The present invention does not limit the computer language...

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Abstract

The invention provides an incremental farmland boundary precision calibration method and device with constraint point set registration, and the method comprises the following steps: pairing farmland boundary data extracted based on a satellite remote sensing image with farmland boundary data obtained through actual measurement, storing the paired farmland boundary data in a database, and exportingthe farmland boundary data; judging the effectiveness of the extracted farmland boundary according to the shape similarity and the region overlapping rate of the farmland boundary extracted based onthe satellite remote sensing image and the actually measured farmland boundary; extracting corresponding points of farmland boundaries, correcting the extracted farmland boundaries based on rigid point set registration, and correcting the extracted farmland boundaries based on incremental joint point set registration; and storing the corrected farmland boundary into a database. According to the invention, the positioning precision of the farmland boundary extracted based on the high-resolution satellite remote sensing image and the efficiency of extracting the farmland boundary are improved.

Description

technical field [0001] The invention relates to the technical field of farmland boundary extraction, in particular to an incremental farmland boundary precision calibration method and device with constraint point set registration. Background technique [0002] Farmland boundary is very important information of my country's land resources, and it is also one of the focus objects of my country's national land survey once every ten years. With the rapid development of science and technology, precision agriculture has become one of the trends of agricultural development in the world today. Among them, UAV plant protection (pesticide spraying, fertilization, crop growth tracking, etc.) has become an important part of precision agriculture and one of the effective means to improve the efficiency of agricultural operations. High-precision farmland boundaries are one of the necessary conditions for efficient and precise operations of UAVs. [0003] Based on high-resolution satelli...

Claims

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Application Information

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IPC IPC(8): G06T7/33G06T7/181
CPCG06T7/337G06T7/181G06T2207/10032G06T2207/30188
Inventor 葛嵩
Owner QIANXUN SPATIAL INTELLIGENCE INC
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