Patent ID: 9083887
Filing Date: 2015-07-14
Classification: H04N

Abstract:
1. An image capture device, comprising: an image sensor including a pixel array having a plurality of unit pixels, unit pixels included in first rows of the pixel array detecting incident light originated from a light source during a first exposure time to generate a first image signal, unit pixels included in second rows of the pixel array detecting incident light originated from the light source during a second exposure time to generate a second image signal; an analysis unit configured to determine an optimum light model that models the light source based on the first image signal and the second image signal, and to generate compensation gains corresponding to rows of the pixel array, respectively, based on the optimum light model and configured to compensate for flicker associated with a frequency of the incident light; a compensation unit configured to generate an output image signal by compensating the first image signal and the second image signal using the compensation gains, wherein the analysis unit sets a light model using light parameters, calculates a difference between the light source and the light model while varying the light parameters, and determines the light model that minimizes the difference between the light source and the light model as the optimum light model; and wherein the analysis unit sets the light parameters using, P =[A sets the light model L(t) using, where P is the light parameters, and M is a positive integer from 1 to any upper limit provided, t is time, and f is the frequency.