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Infrared small target detection method based on dual-band image fusion

A small target detection and image fusion technology, applied in image enhancement, image analysis, image data processing, etc., to achieve high target sharpness, improved detection rate, and clutter suppression.

Inactive Publication Date: 2018-08-03
NANCHANG HANGKONG UNIVERSITY
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Problems solved by technology

[0005] Small target detection method with multi-directional gradient spatio-temporal filtering: due to clutter and noise interference, it is difficult to identify real targets from various background clutter and random interference

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  • Infrared small target detection method based on dual-band image fusion
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Embodiment Construction

[0026] The present invention adopts such as figure 1 The shown research scheme of infrared small target detection with dual-band image fusion, its specific implementation steps are as follows:

[0027] (1) In the practical application of target detection, the target distance and size have an important impact on the final detection effect. Therefore, the distance factor is designed to describe the influence of target distance and size on the detection probability. The distance factor l decreases as the distance increases, and in the case of the same distance, the larger the target, the greater the distance factor l. The detection result of the detector is the result of the combined effect of the target background contrast characteristic, the detector spectral matching characteristic, the atmospheric transmission characteristic and the target's own characteristic. Its target characteristic index K IR As shown in formula (1).

[0028] K IR =C IR a IR b IR l (1)

[0029] ...

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Abstract

The invention discloses an infrared small target detection method based on dual-band image fusion. The infrared small target detection method is characterized by comprising the steps of: analyzing differences of radiation characteristics, transmission characteristics, imaging characteristics and the like of a target and its background in different bands, and studying a target characteristic calculation method of a distance factor, so as to highlight the different characteristics between a true target and a false target of an image; analyzing redundant and complementary information of dual-bandimages, studying a data fusion method of multi-scale geometric analysis, so that clutters of a merged image are suppressed, the target sharpness is higher and the contour is clearer; and analyzing clutter and noise interference, and studying a multi-orientation gradient small target detection method, and achieving a high detection rate of the small target. The target characteristic calculation method of the distance factor, the data fusion method of multi-scale geometric analysis and the multi-orientation gradient small target detection method are provided by invention, the methods are combined to implement the infrared small target detection method based on dual-band image fusion, and the small target detection technology is enriched.

Description

technical field [0001] The invention relates to target characteristic calculation of distance factor, data fusion technology of multi-scale geometric analysis, and small target detection technology of multi-directional gradient, in particular to an infrared small target detection method in dual-band image fusion. Background technique [0002] The background technology of the present invention involves three key steps and methods: research on the calculation method of the target characteristics of the distance factor, research on the data fusion method of multi-scale geometric analysis, and research on the small target detection method of the multi-directional gradient. [0003] Calculation method of target characteristics of distance factor: due to the large, uncertain, or even sudden change in the range of values ​​describing the contrast between the target and the background radiation. Study the target characteristic calculation method of the distance factor, and highlight...

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Application Information

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IPC IPC(8): G06T7/00
CPCG06T7/0002G06T2207/10048G06T2207/20221
Inventor 王忠华谢韵雅王浩廖远刘清平
Owner NANCHANG HANGKONG UNIVERSITY