ZOOM LENS SYSTEM CHARACTERIZATION FOR IMAGE SHARPENING

摘要

A method for sharpening an input digital image captured using a digital camera having a zoom lens, determining a parameterized representation of lens acuity of the zoom lens as a function of at least the lens focal length and lens F# by fitting a parameterized function to lens acuity data for the zoom lens at a plurality of lens focal length and lens F/#; using a processor to sharpen the input digital image responsive to the particular lens focal length and lens F/# corresponding to the input digital image using the parameterized representation of the lens acuity.