WATER-LEAVING RADIANCE SPECTRUM CALCULATION METHOD AND APPARATUS, TERMINAL AND STORAGE MEDIUM

The present application provides a water-leaving radiance spectrum calculation method and apparatus, a terminal and a storage medium. The method comprises: according to an inclination angle and a field of view of a hyperspectral camera, calculating a skylight reflection angle corresponding to each pixel in a water body hyperspectral image obliquely captured by the hyperspectral camera; according to the skylight reflection angle corresponding to each pixel, calculating the relative radiation quantity of skylight received by each pixel in the water body hyperspectral image; on the basis of spectrums and the relative radiation quantity of the skylight that are received at a first preset position and a second preset position, and a difference in water-leaving radiance spectrums between the first preset position and the second preset position being within a preset difference range, calculating a skylight spectrum received by each pixel in the water body hyperspectral image; and calculating the water-leaving radian