Marine target automatic detection method

Abstract

The invention discloses a marine target automatic detection method, and relates to a target automatic detection method. The invention provides an automatic marine target detection method based on space-time analysis of halftone image streams in a visible light range of an airborne photoelectric system of an unmanned aerial vehicle without presetting a hard coded reference image for target detection. The detection method comprises the following steps: S1, acquiring a marine target video sequence of an airborne photoelectric system of the unmanned aerial vehicle; s2, constructing a key target model MO of the ocean scene; S3, obtaining a frame target vector of a suspicious target in a first frame image of the video sequence in S1; S4, updating the key target model MO; and S5, obtaining a frame target vector S6 of a suspicious target in a next frame image of the video sequence in the S1, updating the key target model MO: S7, finding a target with a weight of Wmax from the target vectors ofthe model, and determining the target as a detected target, the Wmax is the maximum allowable weight of the target.

Description

technical field [0001] The invention relates to an automatic detection method for a target, in particular to an automatic detection method for a target at sea, and belongs to the technical field of automatic detection. Background technique [0002] Using machine vision technology to achieve automatic detection of targets is one of the problems that need to be solved urgently in the civilian / military field. This problem has not found a clear general solution at this stage, and it has only been partially solved under some specific conditions. Therefore, automatic target detection technology has been well developed in radar systems and thermal imaging systems for air target detection. [0003] However, it may not be possible to extract objects of interest from the background in the infrared range, and active radar cannot be used in some missions due to the presence of radio channel noise or the need for secrecy of detection. Furthermore, in many cases it is not possible to pr...

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Problems solved by technology

[0003] however, in the infrared range it may not be possible to extract objects of interest from the background, and in some missions active radar cannot be used due to the presence of radio channel noise or the need for secrecy of detection

Furthermore, in many cases it is not possible to preset reference images of all targets of interest, which imposes additional constraints on automatic target detection systems

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