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Method and system for classifying a terrain type in an area

a technology of terrain type and method, applied in the field of method for classifying terrain type in an area, can solve the problem of limited computational power and achieve the effect of improving the accuracy of image analysis

Active Publication Date: 2016-06-16
MAXAR INT SWEDEN AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This approach reduces computational power requirements, allows for more reliable classification with less reliance on image matching time, and effectively minimizes errors from shadows and moving objects, providing accurate terrain type classification across larger areas.

Problems solved by technology

By doing this only limited computational power is required since no stereo matching is needed.

Method used

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  • Method and system for classifying a terrain type in an area
  • Method and system for classifying a terrain type in an area
  • Method and system for classifying a terrain type in an area

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Embodiment Construction

[0038]In the following, the description will only focus on water as a terrain type and a water index as a terrain type index. It should, however, be understood that the application of the teaching of this disclosure is not limited to water but applicable to any other terrain type. Examples of other terrain types are rock, forest, agricultural area, constructions, and infrastructure. Terrain type indices can be defined for these other terrain types in a similar way as the water index defined in the background art. The reflectance can be chosen from wavelength band(s) suitable for specifically pointing out the terrain type. Also terrain type indices defined with more than two reflectances or by completely different formulae can be used within the scope of this disclosure.

[0039]FIG. 1 shows a sketch of an image 1 with a scene as can be seen when the image is an aerial image. The aerial image can, for example, originate from an airplane, a helicopter, a balloon, an unmanned aerial vehic...

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PUM

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Abstract

A method for classifying a terrain type in an area is provided, which method comprises the steps of: obtaining a plurality of overlapping aerial images of the area; calculating at least one terrain type index for each part of each of the aerial images which lies in the area, where the at least one terrain type index represents the terrain type; determining at least one terrain type index for each part of the area based on the calculated at least one terrain type index for each part of each of the aerial images; and classifying the parts of the area for which at least one pre-determined conditions is met as containing the terrain type, wherein at least one of the at least one predetermined condition relates to a value of the determined at least one terrain type index. An associated system and computer program product are also provided.

Description

BACKGROUND[0001]1. Related Field[0002]The present disclosure relates to a method for classifying a terrain type in an area. It also relates to a system for classifying a terrain type in an area, to a computer program and a computer program product.[0003]2. Related Art[0004]Satellites used for providing pictures of the Earth's surface can often generate multi-spectral images, i.e. the images generated by these satellites can comprise information in different wavelength areas, for example from ultraviolet (UV) to infrared (IR). As an example, the satellites WorldView-2 and WorldView-3 operated by the company DigitalGlobe provide images from eight different spectral bands named coastal blue (400-450 nm), blue (450-510 nm), green (510-580 nm), yellow (585-625 nm), red (630-690 nm), red-edge (705-745 nm), near IR (NIR) 1 (770-895 nm), and NIR2 (860-1040 nm).[0005]The images can be analysed for identifying, for example, water, other terrain types, cities, etc. For identifying water, a wat...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G06K9/00G06T17/05G06T7/00G06V20/13
CPCG06K9/0063G06T7/0053G06T2207/30181G06T2207/10036G06T17/05G06T7/507G06V20/13
Inventor HAGLUND, LEIFISAKSSON, FOLKECARLBOM, PERNYGREN, OLABORG, JOHANRINGQVIST, SANNANORDMARK, ANTON
Owner MAXAR INT SWEDEN AB
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