Anisotropic Diffusion

Advancing Underwater Imaging: A New Filter for Clearer Ocean Insights

Clear water is a luxury underwater images rarely enjoy. Haze, wavelength-dependent absorption, and scattering routinely strip clarity from marine observation, yet most enhancement methods treat these as uniform noise rather than physical realities. The proposed RSADAF framework changes that calculus. By embedding Rayleigh scattering directly into a second-order diffusion model, the authors give the filter true wavelength awareness, allowing it to suppress degradation while preserving structural edges. The benchmark results, including a PSNR of 42.85 dB, speak for themselves. This is practical, interpretable ocean intelligence.