Method and system for reducing chromatic aberration

摘要

A method of processing a polychromatic image is disclosed. The method comprises, for each of at least a portion of the picture elements, assigning to the picture element a new color value for each individual color, and storing the new values in a computer readable medium. The new values are assigned by: processing each of a first and a second colors of the picture element, based, at least in part on first and second colors of peripheral picture elements, to respectively provide a first processed color value and a second processed color value; employing optimization for reducing error and for assigning to the picture element a new color value for each of the first and second colors; and assigning to the picture element a new color value for a third color calculated based, at least in part, on the new color values for the first and second colors.

主权项

1. A method of processing a polychromatic image arranged gridwise in a plurality of picture elements each represented by a color spectrum resolvable into a plurality of individual colors over the grid, the method comprising, for each of at least a portion of said picture elements, using an image processor for assigning to said picture element a new color value for each individual color, and storing said new values in a computer readable medium, wherein said assigning comprises:
processing each of a first and a second colors of said picture element, based, at least in part on first and second colors of picture elements being peripheral to said picture element, to respectively provide a first processed color value and a second processed color value; employing an optimization procedure for reducing an error of said processed color values, and for assigning to said picture element a new color value for each of said first and said second colors; and assigning to said picture element a new color value for a third color calculated based, at least in part, on said new color values for said first and said second colors; wherein said processing comprises: obtaining a first central value and a second central value, respectfully corresponding to said first and said second colors; calculating a first peripheral value and a second peripheral value, respectfully corresponding to said first and said colors; subtracting said second peripheral value from said first central value, thereby providing said first processed value; and subtracting said first peripheral value from said second central value, thereby providing said second processed value.