An image processing apparatus for sharpening photographic image data
obtained through digitization of a photographic image by using a
sharpening filter capable of sharpening intensity adjustment. The
apparatus includes a parameter determining section for extracting from
the photographic image data a predetermined color pixel showing a
predetermined color and then giving a sharpening intensity adjustment
parameter to the predetermined color pixel and a sharpening operation
section for effecting a pixel-by-pixel sharpening operation on the
photographic image data while adjusting a sharpening intensity of the
sharpening filter according to the sharpening intensity adjustment
parameter.