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Method for calculating island structure stock

A calculation method and structure technology, applied in the field of comprehensive information extraction based on remote sensing, can solve the problems of difficult, incomplete, and poor timeliness in horizontal comparison between islands in marine management departments, and achieve the effect of fast and high-precision material inventory calculation

Inactive Publication Date: 2017-07-21
THE FIRST INST OF OCEANOGRAPHY SOA
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Problems solved by technology

However, the construction of related databases in China is still not perfect, especially the statistical data based on islands is even more scarce, and the only data are often old and incomplete, which has caused the problems of low data accuracy and poor timeliness
At the same time, due to the different statistical calibers, it also brings difficulties to the marine management departments to carry out horizontal comparisons between islands.

Method used

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  • Method for calculating island structure stock
  • Method for calculating island structure stock
  • Method for calculating island structure stock

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with specific embodiments.

[0035] The invention relates to a method for calculating the stock of structures on an island, comprising the following steps:

[0036] S1: For the island area to be studied, use the third-order rational function to establish a mathematical relationship between the image point coordinates of the stereo image pair image and the spatial coordinates of the ground point, and perform relative orientation:

[0037]

[0038]

[0039] In the formula (x, y) is the row and column coordinates of the image point, (X, Y, Z) is the longitude, latitude and height of the ground point on the map; i, j, k are in the interval [0, 3], and i+ j+k≤3;

[0040] S2: Use the ground control point GCP to absolutely position the three-dimensional model in the earth coordinate system, and use the cross-correlation algorithm for matching to generate a digital surface model DSM:

[0041]

[004...

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Abstract

The invention relates to a method for calculating an island structure stock. The method comprises: on the basis of generation of island DSM and nDSM data of a stereo image pair, an island structure classification system and a material inventory base are established; and with combination of structure type information and parameters obtained by nDSM extraction, a total island structure stock value is calculated, wherein the total island structure stock value is a stock sum of a resident building unit, a non-resident building unit, a transport infrastructure unit and a pipeline facilities unit. According to the invention, with combination of the practical situation of an island and characteristics of island structures, a method for calculating an island structure stock is constructed based on a high-resolution stereo image pair satellite image and a material inventory database, so that large-scale, rapid, and high-precision island artificial structure material stock calculation can be realized.

Description

technical field [0001] The invention belongs to a method for comprehensively extracting information based on remote sensing, and in particular relates to a calculation method for the inventory of structures on an island. Background technique [0002] There are many islands in our country. With the rapid development of sea-related industries such as island tourism, aquaculture, and new marine energy, and in order to improve national defense security and meet the needs of maritime shipping, a large number of artificial islands have been built in recent years. Infrastructure and other structures have invested a lot of material resources. As a system isolated from the mainland in geographical space, the island’s natural resources are relatively limited, and most of the raw materials for the construction of facilities on the island rely on the supply of the mainland. Quantitative calculation of the stock of artificial facilities on the island is not only the key to regulating the...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/00G06T17/05
Inventor 郭振石洪华池源麻德明张炫钊
Owner THE FIRST INST OF OCEANOGRAPHY SOA
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