Patent ID: 6490055
Filing Date: 2002-12-03
Classification: G06K

Abstract:
A color image processing apparatus comprising:first conversion means for converting input information into intermediate data of a first type of color element representation; obtaining means for obtaining image data of the first type of color element representation based on the intermediate data converted by said first conversion means; second conversion means for converting image data of the first type of color element representation into image data of the second type of color element representation; and third conversion means for converting image data of the second type of color element representation into image data of the first type of color element representation, wherein in applying a logic operation on image data of the first type of color element representation, said apparatus is operable in a first mode in which the logic operation is applied directly to the image data of the first type of color element representation obtained by said obtaining means, or in a second mode in which the logic operation is applied to the image data of the second type of color element representation converted by said second conversion means and then the image data of the second type of color element representation to which the logic operation is applied is converted into the image data of the first type of color element representation by said third conversion means.