Patent ID: 8638482

Claim:
An image processing apparatus configured to extract additional information added to an original document and perform processing according to a result of extraction, comprising: an identification unit configured to identify a color component to be used for the additional information; an input unit configured to input document image data obtained by causing a reading unit to read an image of an original document to which the additional information is not yet added; a conversion unit configured to convert a color component of the document image data input by the input unit into a color component different from the color component identified by the identification unit; a determination unit configured to determine whether the color component identified by the identification unit is included in the original document to which the additional information is not yet added; and a control unit configured to, if the determination unit determines that the identified color component is included in the original document, cause a printing unit to print the document image data of which the color component is converted by the conversion unit, as an original document to which the additional information is to be added.