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Bird target feature analysis and extraction method based on visible light image and SAR image

A technology of target features and extraction methods, applied in the field of intelligent analysis, can solve problems such as bird strikes and inability to avoid aircraft

Inactive Publication Date: 2021-01-22
南京华格信息技术有限公司
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] In terms of aircraft, high speed is an important cause of bird strikes, and high speed makes it impossible for most birds to avoid flying aircraft; in addition, the strong airflow at the air intake of jet aircraft often sucks flying birds into the engine, causing bird strike

Method used

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  • Bird target feature analysis and extraction method based on visible light image and SAR image
  • Bird target feature analysis and extraction method based on visible light image and SAR image
  • Bird target feature analysis and extraction method based on visible light image and SAR image

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Embodiment Construction

[0040] The bird target feature analysis and extraction method based on visible light images and SAR images of the present invention comprises the following steps:

[0041] Step 1: Collect field data: use visible light images to capture visible images, and radar SAR to collect SAR images;

[0042] Step 2: Suspicious target extraction: take the visible light image and SAR image collected in step 1 as the data source, and extract suspicious targets from the data source;

[0043] Step 3: feature extraction of suspicious targets: perform feature extraction on suspicious targets;

[0044] Step 4: Fuzzy processing of features of suspicious targets: set X={ }, X represents the target feature set, and the density of the fuzzy measure is defined as the function g:

[0045] which is ,

[0046] then determine the set of The fuzzy measure is expressed as:

[0047] (1),

[0048] is the importance of any target feature set X measure when , formula (1) can be written as: ...

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Abstract

The invention relates to a bird target feature analysis and extraction method based on a visible light image and an SAR image, and belongs to the technical field of intelligent analysis, and the method comprises the following operation steps: 1, collecting field data: employing the visible light image for photographing, collecting the visible image, and employing a radar SAR for collecting the SARimage; 2, extracting a suspicious target; 2, extracting features of a suspicious target; 3, carrying out the fuzzy processing of the features of the suspicious target; and 4, carrying out the fuzzy fusion. Compared with single sensor identification, fusion identification can improve the target identification rate and reduce false alarms and missed alarms.

Description

technical field [0001] The invention relates to a bird target feature analysis and extraction method based on visible light images and SAR images, and belongs to the technical field of intelligent analysis. Background technique [0002] Airplanes collide with birds, which is a worldwide problem and poses a threat to the flight safety of civil aviation aircraft and military aircraft. Airplanes are afraid of birds because the relative speed of the aircraft is fast, and the force after colliding with an object is great. Exceeding the bearing capacity of a certain part of the aircraft may damage the body or parts of the aircraft, and seriously threaten flight safety directly. [0003] For example, if a bird crashes into the windshield of an aircraft, it will directly affect the pilot's control of the aircraft, and even affect the safety of the pilot's life. If a bird hits the engine, it will cause the engine to stop in the air, or even cause the engine to catch fire in the air...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/46
CPCG06V20/13G06V10/40
Inventor 刘建平
Owner 南京华格信息技术有限公司
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