Patent ID: 6556707
Filing Date: 2003-04-29
Classification: H04N

Abstract:
An image processing apparatus, comprising:a converter for performing a frequency conversion operation on a color image signal, said color image signal including a first brightness signal and at least one color signal, and for dividing values of said first brightness signal into a first plurality of high frequency coefficients and at least one low frequency coefficient, and for dividing values of said at least one color signal into a second plurality of high frequency coefficients and at least one low frequency coefficient; a calculator for calculating said first plurality of high frequency coefficients and said second plurality of high frequency coefficients, for generating a third plurality of high frequency coefficients using said first plurality of high frequency coefficients and said second plurality of high frequency coefficients, and for generating a second brightness signal by combining said at least one low frequency coefficient of said first brightness signal with said third plurality of high frequency coefficients; and a reverse converter for performing a reverse frequency conversion operation on said second brightness signal.