Patent ID: 6766068
Filing Date: 2004-07-20
Classification: G06T

Abstract:
An interpolating operation method for an image signal, wherein an interpolated image signal component corresponding to an interpolation point is calculated from original image signal components of an original image signal representing an original image, which represent a plurality of sampling points arrayed at predetermined intervals and in a lattice-like form, the method comprising the steps of:i) making a judgement as to whether the interpolation point belongs to an image edge portion, at which a change in the original image signal is sharp, or belongs to a flat portion, at which the change in the original image signal is unsharp, and ii) changing interpolating operation processes, one of which is to be employed for the interpolation point, over to each other in accordance with the results of the judgment; and wherein the interpolating operation process, which is employed in cases where, as a result of said judgment, it has been judged that the interpolation point belongs to a flat portion, is an interpolating operation process, with which the sharpness of the same flat portion is manually rendered variable.