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High-spectral ship detection method based on combination of spatial and spectral information

A ship detection and hyperspectral technology, which is applied in the field of hyperspectral remote sensing image processing, can solve the problem of false alarms of ship targets, achieve low false alarm rate, accurate sea and land segmentation results, and simple methods

Active Publication Date: 2017-06-23
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0005] In view of this, the present invention provides a hyperspectral ship detection method based on the combination of spatial spectrum information, which can solve the problems of detection accuracy and false alarms of ship targets in existing ship detection methods

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  • High-spectral ship detection method based on combination of spatial and spectral information
  • High-spectral ship detection method based on combination of spatial and spectral information
  • High-spectral ship detection method based on combination of spatial and spectral information

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Embodiment Construction

[0036] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0037] The invention provides a hyperspectral ship detection method based on the combination of space-spectrum information, which belongs to the application of hyperspectral remote sensing image processing technology in ship detection, and is specifically a ship detection method based on the combination of space-spectrum information of medium and high-resolution hyperspectral images. ship detection method.

[0038] Technical scheme of the present invention comprises the steps:

[0039] Step 1. Spectrum acquisition is performed on the original hyperspectral image, and the target spectral subspace and non-target spectral subspace of the ship are respectively constructed. Non-targets include false targets and backgrounds. In hyperspectral data, it is considered to be a method of calibration or spectral endmember extraction.

[0040] Step 2, spectral band sc...

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Abstract

The invention provides a high-spectral ship detection method based on combination of spatial and spectral information, and the method can be used to solve the problems in accuracy and false alarm in ship object detection in a present ship detection method. A monitoring-free spectral subinterval screening method based on inter-class variation is related to, and the monitoring-free spectral waveband screening method is accurate, rapid and highly robust. Relative stability of a water domain is added to threshold segmentation, interference of a non water area of relatively low brightness value in a detection result is weakened greatly, a sea-land segmentation result of high accuracy can be obtained, and the method is simple, rapid and adaptive. Space features of an RX abnormal detection result are enhanced, namely, a 2D intrinsic mode is used to decompose a reconstruction image, and the method is self-adaptive and relies on structure of data itself. According to the method, the spectral feature of a substance is used to analyze main materials of the substance, and all spectrums can be obtained by linear combination of spectral vectors in a spectrum dictionary.

Description

technical field [0001] The invention relates to the technical field of hyperspectral remote sensing image processing, in particular to a hyperspectral ship detection method based on spatial spectrum information combination. Background technique [0002] With the rapid development of satellite remote sensing technology, satellite remote sensing has experienced the development process from traditional optical images to multispectral images of several bands, and then to hyperspectral images of hundreds of bands. The spectral resolution of sensor imaging has reached 5nm accuracy. Existing hyperspectral imaging devices can already obtain medium-to-high spatial resolution images covering dozens or even hundreds of bands covering all visible light and near-infrared wavelengths. Images of different bands are combined to form a hyperspectral cube. From the perspective of a single band, it is a two-dimensional image with low resolution in space; from the perspective of pixels, it is ...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/34
CPCG06V20/13G06V10/267
Inventor 邓宸伟代嘉慧王文正赵保军唐林波
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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