Patent ID: 8472084

Claim:
A method of controlling an image processing apparatus that processes a document using image processing parameters when printing and copying the document, the method comprising: inserting first information of each of a plurality of image processing parameters, which are used to print the document, into the document when printing the document in the form of a watermark; and optimizing the first information of the image processing parameters as second information of the image processing parameters for use during copying the document, wherein the first information is inserted into the document in the form of a watermark, and the watermark includes a reference point and a plurality of points, wherein each of the plurality of points representing a different type of image processing parameter used to print the document, and an angular relationship of the reference point and each of the plurality of points being determined by a previously determined watermark detection rule, wherein a linear distance between the reference point and each of the plurality of points represents a parameter value corresponding to the respective one of the image processing parameters and representative of determined type of parameter, and wherein a first linear distance between the reference point and a selected one of the plurality of points represents a first value of one of the parameters of a certain type and a different second linear distance between the reference point and the selected one of the plurality of points represents a different second value of the same one of the parameters of the same type.