Patent ID: 8456695

Claim:
An image processing device for converting input image data in input color space into output image data in output color space, comprising: an input unit configured to input a plurality of input pixel signals comprising the input image data; a selection input unit configured to input a designation of one of a plurality of color spaces and an achromatic condition for the designated one of the plurality of color spaces according to a user's operation, the achromatic condition being a judgment equation to decide whether or not the input pixel signals are achromatic; a designation unit configured to designate the achromatic condition for pixels corresponding to the plurality of input pixel signals, the achromatic condition being input by the user's operation via the selection input unit; and an achromatic judgment unit configured to judge whether or not each of the plurality of input pixel signals input by the input unit satisfies the achromatic condition, wherein the achromatic judgment unit judges that a pixel which corresponds to a particular input pixel signal is an achromatic pixel where the particular input pixel signal satisfies the judgment equation of the achromatic condition.