Patent Document ID: 9478015
Application ID: 14238069
Patent Status: 1

Claim One:
1. An exposure enhancement method for a defogged image, comprising: constructing an exposure enhancement function in accordance with a defogging parameter, the defogging parameter controlling a defogging degree of a foggy image and being set by a user; and performing exposure enhancement on a defogged image by using the constructed exposure enhancement function, wherein the exposure enhancement function is a quadratic Bezier function, and the constructing the quadratic Bezier function comprises: under the condition that normalized input pixel values and normalized output pixel values are employed, constructing a straight line y=(1+kω)x, which passes through the origin and has a slope larger than 1, by using the defogging parameter, and calculating coordinates of an intersection point “P1” of the straight line y=(1+kω)x and a straight line y=−jx+1, wherein both “j” and “k” are larger than zero; constructing a control triangle by taking the origin P0(0,0), the intersection point “P1” of the straight line y=(1+kω)x and the straight line y=−jx+1, and a boundary point P2(1, 1), the coordinates of which are the maximum values of the normalized input pixel values and the normalized output pixel values, as vertexes; and constructing the quadratic Bezier function in the control triangle.