A method for controlling a mixed color light source for improving quality of wide images

摘要

An embodiment of the present invention is a method of optimizing a color of a composite light by performing a lighting optimization operation based on a numerical criterion so that an appropriate light can be automatically found, an operator can find a compound light which is hard to find, Thereby providing a composite lighting control method. According to an embodiment of the present invention, there is provided a method of controlling a color composite illumination for improving a large area image quality, comprising the steps of: (i) acquiring a digital image from a test image incident on an imaging unit and converting the digital image into a gray level image; (Ii) correcting the brightness of the inspection image using the gray level image; (Iii) selecting an image quality index? Reflecting the gray level P (i, j) of each pixel of the gray level image corrected in step (ii); (Iv) defining an evaluation function (f = -? (U)) such that the picture quality index has a maximum value; (V) constructing a simplex using k light source input values of a color synthesized light source having an evaluation function and k light sources; (Vi) A simplex search algorithm is performed to determine a test point by a simplex search, and the lowest point (f ( _{Qk + 1} ), worst point) is determined by a test point as a top point (f (Q ₁ ), best point); (Iii) controlling the combined light source generator using the light source input value obtained in the step (vi); And (iii) repeating the above steps (i) to (i) until the image quality index reaches a maximum value.