Patent ID: 6628329
Filing Date: 2003-09-30
Classification: H04N

Abstract:
A method for creating a boost map to correct for position dependent blur in an image, comprising the steps of:(a) providing an electronic camera having an imaging system to capture images; (b) using the electronic camera to capture an image of a test pattern having multiple edges in a repeated pattern; (c) measuring the MTF of the imaging system at the position of each edge of the test pattern image; (d) determining a desired MTF of the imaging system; (e) calculating a boost value for each edge position based on the corresponding measured MTF value of that position and the desired MTF value; and (f) creating a boost map as a function of two or more of the calculated boost values, the boost map including a plurality of position dependent gain values to be applied to subsequent images captured by the electronic camera in order to correct for position dependent blur in the captured images, such that for each pixel of the captured image, the boost map includes a corresponding position dependent gain value.