Underwater moving target detection device and method based on active polarization imaging

Abstract

The invention discloses an underwater moving target detection device and method based on active polarization imaging, and belongs to the technical field of underwater moving target detection. According to the invention, the polarized light source is used for active illumination, the focal plane polarization camera is used for obtaining image polarization information, and underwater moving target detection is carried out. The method combines a Gaussian mixture background model algorithm with a pyramid optical flow method by using target polarization characteristics, overcomes the light influence and shadow mutation of an underwater imaging environment, eliminates the influence of shadow on target extraction, and can accurately detect the attitude, the movement direction and the movement track of the moving target. The calculation range of the optical flow method is reduced, and the target detection speed is improved.

Description

technical field [0001] The invention belongs to the technical field of underwater moving target detection, and in particular relates to an underwater moving target detection device and method based on active polarization imaging. Background technique [0002] Most of the research at home and abroad is based on the target detection and recognition of the movement in the visible light intensity image, as well as the acquisition of polarization imaging and the improvement of image clarity, and the polarization imaging is static target imaging, and there are very few studies. The researchers use the correlation characteristics of polarization to study the imaging and characteristics of underwater moving targets. Due to the movement of the target object, detailed information such as the texture, edge shape, and surface features of the target cannot be accurately represented by the image. Therefore, using the polarization characteristics of underwater targets combined with relate...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an underwater moving target detection device and method based on active polarization imaging. The problem to be solved is: due to the disadvantages brought by the intensity camera, when the light hits the object, if the object has Items will cause the object to be photographed to be unclear and larger than the actual range, which is difficult to observe and has light pollution. We choose the sub-focal plane camera in the polarization camera. The polarizer on the sub-focal plane camera can effectively weaken or eliminate non-metallic surfaces. Reflective, effectively improve color saturation

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