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Multi-temporal imaging island shoreline surveying method

A multi-temporal, island-based technology, applied in photogrammetry/video surveying, measuring devices, surveying and navigation, etc., can solve problems such as heavy workload, low geometric correction accuracy, slow interpretation speed, etc., to improve extraction efficiency and the effect of extraction accuracy

Inactive Publication Date: 2012-07-18
CHINESE ACAD OF SURVEYING & MAPPING
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AI Technical Summary

Problems solved by technology

[0003] At present, there are problems such as heavy workload, slow interpretation speed, low degree of automation, and low accuracy of geometric correction in the island coastline extraction of images in remote sensing surveys of islands.

Method used

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  • Multi-temporal imaging island shoreline surveying method
  • Multi-temporal imaging island shoreline surveying method
  • Multi-temporal imaging island shoreline surveying method

Examples

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Embodiment Construction

[0042] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0043] figure 1 It is a flow chart of the island shoreline measurement method of the multi-temporal image of the present invention. Such as figure 1 As shown, the method includes:

[0044] Step A: Collect and process the image data of the island to form a waterside image database. Described step A specifically comprises:

[0045] Step A1: Collect multi-temporal and high-resolution multi-source image data of the island. The multi-source image data includes: at least two of aerial image data, aerospace image data, optical image data and radar image data. In this embodiment, the high resolution means that the resolution is less than or equal to 2m.

[0046] Step A2: Co...

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Abstract

The invention discloses a multi-temporal imaging island shoreline surveying method, and relates to the technical field of geodetic surveying and surveying engineering. The method comprises the following steps: collecting and processing image data of an island to form a shoreline image database; collecting and processing water level observing data of the island; according to the shoreline image database and the water level observing data, computing the normal height of the shoreline of the island; according to the shoreline image database, selecting part of a shoreline and establishing a beach digital elevation model of the island; and according to the water level observing data, the normal height of the selected shoreline and the beach digital elevation model, acquiring the planar position of the shoreline of the island. In the multi-temporal imaging island shoreline surveying method, the shoreline image database is established through multi-source image data of the island, and in combination with the water level observing data of the island, the normal height of the shoreline is computed, and thus, the planar position of the shoreline of the island is acquired. Compared with the conventional method, the multi-temporal imaging island shoreline surveying method has the advantage that the shoreline extracting efficiency and the shoreline extracting precision of the island are effectively improved.

Description

technical field [0001] The invention relates to the technical field of geodesy and surveying engineering, in particular to a method for measuring coastlines of islands with multi-temporal images. Background technique [0002] The measurement results of the island coastline can reflect the actual situation of the island coastline, and update and improve the basic geographic information data of the ocean, which is conducive to strengthening the management, planning, development and utilization of islands and the protection of island resources, and is conducive to accelerating the process of digital ocean construction and promoting marine economy. Sustainable development is of great significance. [0003] At present, there are problems such as heavy workload, slow interpretation speed, low degree of automation, and low accuracy of geometric correction in the island coastline extraction of images in remote sensing surveys of islands. Contents of the invention [0004] (1) Tec...

Claims

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Application Information

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IPC IPC(8): G01C11/00G01C5/00
Inventor 章传银暴景阳柯宝贵王伟
Owner CHINESE ACAD OF SURVEYING & MAPPING
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