The invention discloses a rapid image defogging method based on an atmospheric physical scattering model and relates to an
image restoration method. Based on the atmospheric physical scattering model under weather conditions of
fog and
haze given by Narasimhan and the like, an image can be restored through rapid image defogging
processing only by inputting the
single image. The rapid image defogging method comprises the following steps of: taking minimum values of RGB (Red Green Blue) components at each pixel point of a collected color
fog-degraded image, defining a generated gray-scale image as Idc, then conducting gray-scale
erosion and expansion for the gray-scale image Idc, defining a result a I'dc which is also a gray-scale image, obtaining ambient light A by taking a maximum value of pixel grey-scale in the I'dc, conducting rapid combined double-
sideband filtering for the Idc and the I'dc to obtain an atmospheric curtain V (x, y), then calculating the
transmittance distribution ratio t (x, y), substituting the estimated ambient light A, the atmospheric curtain V (x, y), and the
transmittance t (x, y) into the atmospheric physical scattering model to obtain a preliminary restoration result, and then further calculating the
reflectivity of the RGB components of a scene target to obtain a final restored image.