Patent ID: 8411147
Filing Date: 2013-04-02
Classification: H04N

Abstract:
1. A method for eliminating chromatic aberration caused by an imaging environment, wherein the method can eliminate errors resulting from environmental factors or human factors and comprises the steps of: (1) setting an image capture range, wherein a distance between an image capture device and a chromatic aberration calibration device and an angle of the image capture device with respect to the chromatic aberration calibration device are calibrated according to a plurality of positioning points provided on the chromatic aberration calibration device; (2) capturing images, wherein the image capture device repeatedly captures images of the image capture range of the chromatic aberration calibration device so as to obtain pixel RGB values of a plurality of same positions in the images; (3) converting color spaces, wherein the pixel RGB values of the plurality of same positions in the images are converted by a set of color conversion equations into values of a Lab color space; (4) calculating an average chromatic length, wherein a chromatic length ΔE of each said position is determined by the following equation:  where (L (5) calculating an evaluation value X by the following equation:  where σ (6) determining influence of the variances, wherein if the evaluation value X is smaller than or equal to 10%, the errors resulting from the environmental factors or the human factors have been eliminated, and if the evaluation value X is greater than 10%, the image capture range must be reset.