Method for obtaining sea surface target infrared spectrum through map association

Abstract

The invention discloses a method for obtaining a sea surface target infrared spectrum through spectrum correlation, which comprises the following steps of: demixing the sea surface target spectrum ofan image space from a mixed spectrum, and filtering the interference of useless information such as a sea water background and the like on the spectrum, thereby improving the accuracy of the sea surface target spectrum. The sea surface target spectrum of the image space is converted into the sea surface target spectrum of the object space by dividing the atmospheric transmissivity, and the influence of atmospheric attenuation on the spectrum is filtered, so that the accuracy of the sea surface target spectrum is improved. The full field of view is scanned and searched by adopting an arch shape, the scanning range can cover the full field of view, action instructions are few, and the scanning speed is high, so that the real-time performance of the sea surface target spectrum is improved. Apure sea surface infrared image without a target is used as a background to carry out self-adaptive non-uniform correction on an infrared image containing the target, and then a gray scale transformation method is used for enhancing the image, so that the problems that the difference between the gray scale value of the sea surface target and the gray scale value of seawater is small, and the target is difficult to extract are solved.

Description

technical field [0001] The invention belongs to the intersecting field of digital image processing and spectral information processing, and more specifically relates to a method for acquiring infrared spectra of sea surface targets through map correlation. Background technique [0002] Real-time target detection and recognition technology has always been an important research direction. In the prior art, a graph correlation device is proposed for fast and stable recognition of complex backgrounds. Map correlation detection is a multi-mode detection method, including: infrared image detection method, radiation spectrum detection method, and map combination detection method. Using the different radiation characteristics of different objects, the detection and identification of the target is carried out according to the radiation spectrum of the target. In particular, when long-distance detection is carried out or the shape and scale of the target change greatly, the target ca...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects of the prior art, the purpose of the present invention is to solve the technical problem in the prior art that the accuracy of the acquired sea target spectrum is low due to the excessively large spectral measurement area and the influence of atmospheric attenuation

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