Underwater clear image acquisition method based on optimal wave band image fusion

The invention discloses an underwater clear image acquisition method based on optimal waveband image fusion, which comprises the following steps: S1, acquiring a hyperspectral image of a target to be observed in an application scene, and selecting an optimal waveband for underwater observation by using a waveband selection method based on multi-criterion decision in combination with spectral characteristics of a water body and the target; s2, constructing an RGB-optimal wave band underwater binocular imaging system, acquiring an underwater color image and an optimal wave band image at the same time, and registering the acquired images; and S3, fusing complementary information of the image pairs obtained in the step S2 by adopting a multi-modal image fusion method based on visual saliency to obtain a high-quality underwater image. According to the method, the color image is enhanced by using the information in the optimal wave band image, the method is an objective image quality enhancement method, and informa