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A Method of Using Remote Sensing Images to Improve the Resolution of Digital Elevation Data of Mountains

A technology of digital elevation data and remote sensing imagery, which is applied to the details of 3D image data, image data processing, image analysis, etc.

Active Publication Date: 2018-11-16
CHANGCHUN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because mountainous areas are usually relatively remote, the data resolution that can be directly obtained is usually low-resolution data with a resolution of 30 meters or even 100 meters. These data construct a 3D mountain model consisting of large triangular surfaces, which are too rough to meet the current virtual reality. The second is to directly mount the corresponding laser mapping equipment on the aircraft and fly directly in the required area to obtain high-resolution digital elevation data. The high resolution of this type of data can meet the needs of virtual reality. The cost required is huge (usually several million yuan), and most units cannot afford the cost

Method used

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  • A Method of Using Remote Sensing Images to Improve the Resolution of Digital Elevation Data of Mountains
  • A Method of Using Remote Sensing Images to Improve the Resolution of Digital Elevation Data of Mountains
  • A Method of Using Remote Sensing Images to Improve the Resolution of Digital Elevation Data of Mountains

Examples

Experimental program
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Effect test

Embodiment 1

[0104] Based on the original digital elevation data with a resolution of 30 meters, the slope of one of the sixteen peaks of Changbai Mountain is as follows: Figure 8 Shown:

[0105] It can be seen that the whole is composed of larger triangular faces, which are relatively rough and difficult to meet the needs of scene reproduction.

[0106] The present invention utilizes remote sensing image to improve the method for the digital elevation data resolution of mountain body, comprises the following steps:

[0107] S1, input the lower resolution digital elevation data DEM, input the resolution M of the mountain high resolution elevation data, input the abscissa X and ordinate Y of the generated data, the horizontal length W and the vertical length H. Construct the three-dimensional height reference network BNET of the mountain;

[0108] S2, initialize the values ​​of all BStructs in the three-dimensional height reference network BNET according to the digital elevation data DEM...

Embodiment 2

[0116] Based on the original digital elevation data with a resolution of 30 meters, the slopes of the three strange peaks of Changbai Mountain are as follows: Figure 10 As shown: It can be seen that the whole is composed of larger triangular faces, which are relatively rough and difficult to meet the needs of scene reproduction.

[0117] The present invention utilizes remote sensing image to improve the method for the digital elevation data resolution of mountain body, comprises the following steps:

[0118] S1, input the lower resolution digital elevation data DEM, input the resolution M of the high resolution elevation data of the mountain, input the abscissa X and ordinate Y of the generated data, the horizontal length W and the vertical length H; construct a three-dimensional height datum of the mountain NET BNET;

[0119] S2, initialize the values ​​of all BStructs in the three-dimensional height reference network BNET according to the digital elevation data DEM;

[01...

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Abstract

The invention provides a method for improving digital altitude data resolution ratios of mountains by remote sensing images. By the method, original digital altitude data with low resolution ratios can be refined by topographical margin information in the remote sensing images of the mountains to acquire digital altitude information with high resolution ratios. The method has the advantages that digital altitude data with the high resolution ratios of the mountains can be acquired by the digital altitude data with the low resolution ratios and remote sensing image data without additional flight and survey conditions, and accordingly, needs for three-dimensional modeling of natural environments of mountainous areas are met.

Description

technical field [0001] The invention discloses a method for improving the resolution of digital elevation data of mountains by using remote sensing images. The terrain edge information in remote sensing images of mountains is used to refine the original digital elevation data with lower resolution to obtain higher resolution digital elevation information. It belongs to the field of geographic data processing. Background technique [0002] In the process of virtual reality applications such as situational teaching, historical environment reproduction, film and video game production, it is necessary to establish a 3D model of a large range of natural environments. For mountainous areas, the quality of the three-dimensional structure of the mountain has a key impact on the quality of the entire engineering modeling. The use of digital elevation data can directly and quickly establish the three-dimensional structure of a specific mountain. The elevation data with higher spatial...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T17/05
CPCG06T17/05G06T2200/04G06T2207/10032
Inventor 许骏潘欣张素莉付浩海张华
Owner CHANGCHUN INST OF TECH