The application belongs to the technical field of
polarization imaging, and particularly relates to a water image despeckling model construction method based on
polarization imaging, which comprises the following steps: using a
feature extraction encoder to map four polarization angle images and calculated intensity images to a low-dimensional latent feature space; introducing a
diffusion model network, a forward process of which is used to gradually add
Gaussian noise until the
noise data conform to a standard
Gaussian distribution, starting from clear latent features extracted based on a clear water target intensity image and a
turbid water target polarization image; a reverse process of the
diffusion model network is used to denoise the
noise data under the guidance of polarization features of the
turbid water target, generate clear latent features of the
underwater target, and obtain clear latent
feature estimation results; using a reconstruction
module network, based on the
estimation results and the intensity image of the
underwater target in the corresponding sample, a corresponding clear
underwater target image is generated. The application can adapt to scattering environments of water bodies with different
turbidity, and has high generalization and high robustness.