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Method for carrying out aero-optic effect calibration on airport airplane target image

A technology of aircraft target and correction method, applied in image enhancement, image analysis, image data processing and other directions, which can solve the problems of poor real-time performance and low correction efficiency.

Active Publication Date: 2014-04-23
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0005] The invention provides a method for correcting the aero-optical effect of an airport aircraft target image, which solves the problems of poor real-time performance and low correction efficiency of the existing method for correcting the aero-optical effect of an airport image

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  • Method for carrying out aero-optic effect calibration on airport airplane target image
  • Method for carrying out aero-optic effect calibration on airport airplane target image
  • Method for carrying out aero-optic effect calibration on airport airplane target image

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[0112] The present invention will be further described below in conjunction with the accompanying drawings and examples. The following examples are only used to explain the present invention, and do not constitute a limitation to the present invention.

[0113] Such as figure 1 Shown, the embodiment of the present invention comprises ground knowledge preparation step and real-time remote sensing flight step:

[0114] (1) Ground knowledge preparation steps, including the following sub-steps:

[0115] (1.1) Obtain the front view image:

[0116] Obtain the orthographic image Q of the entire target airport area from the Google satellite images with shooting heights of 8km, 5km, and 3km respectively 8 , Q 5 , Q 3 , as shown in Figure 2(a), Figure 2(b), and Figure 2(c) respectively;

[0117] (1.2) Generate a front view reference map:

[0118] From the orthographic image map Q 8 , Q 5 , Q 3 , to generate a multi-scale binary airport runway elevation reference map L 8 , L 5...

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Abstract

The invention relates to a method for carrying out aero-optic effect calibration on an airport airplane target image, belongs to a digital image processing technology and solves the problems of poor real-time performance and low calibration efficiency of an existing airport image aero-optic effect calibration method. The method comprises two steps, wherein the ground knowledge preparing step comprises substeps of acquiring a front view image graph and generating a front view reference graph; and the real-time remote sensing flight processing step comprises substeps of acquiring a real-time image, selecting a sub reference image, carrying out perspective transformation, calibrating a target airport optical image, carrying out template matching to extract an airport runway region, calibrating an airport runway image, dividing and detecting a suspected airplane target region, calibrating the suspected airplane target region, refilling the suspected airplane target region and refilling the airport runway region. According to the invention, a calibrating range is restrained in an airport region and is centralized on the suspected airplane target region; real-time performance is improved; a calibrating effect is improved; and the method is suitable for hypersonic speed aircraft to carry out aero-optic effect calibration on the airport image acquired in the remote sensing, detecting, navigating and guiding process.

Description

technical field [0001] The invention belongs to digital image processing technology, and in particular relates to an aero-optical effect correction method of an airport aircraft target image, which is used for remote sensing, detection, navigation and guidance of a hypersonic aircraft. Background technique [0002] Remote sensing, detection, navigation and guidance of hypersonic vehicles is an important field in the development of the aerospace industry in the 21st century, and it has important scientific significance and application value in the future high-tech and national economic development. However, since the flight speed is more than three times higher than the speed of sound, remote sensing, detection, navigation and guidance based on hypersonic vehicles face the challenge of aero-optical effects. [0003] Aero-optics is a subject that studies the influence of high-speed flow on imaging and detection of high-speed aircraft. When a high-speed aircraft carrying an op...

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Application Information

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IPC IPC(8): G06T5/50G06T7/00
Inventor 张天序王正何力刘立周钢凡速飞陈一梦郑亚云
Owner HUAZHONG UNIV OF SCI & TECH
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