Stray light estimation method based on Zernike polynomial

The invention relates to the technical field of image processing, in particular to a stray light estimation method for a geostationary orbit remote sensing optical image. The invention provides a stray light estimation method based on a Zernike polynomial, and the method comprises the following steps: (1), carrying out the regional division by a stray light estimation model; (2) solving a least square problem by adopting Householder transformation, and realizing stable solving of a primary function coefficient; and (3) performing stray light estimation by using a Zernike polynomial, and fullyusing the distribution characteristics of stray light. The invention obtains a data source of a solving coefficient through region division; a low-order Zernike polynomial is adopted, and Householdertransformation is combined, so that robust estimation of stray light can be realized; therefore, the invention is not sensitive to Gaussian noises, and suitable for stray light estimation of the geostationary orbit to the grou