An image processing apparatus (110), which is equipped with multiple image processing functions, processes an input image using an image processing function set at the time of image input. An image processing apparatus (100) registers setup information relating to processes of respective ones of the multiple image processing functions to be applied to an image of interest, encodes the setup information and generates an identification indicator. The image of interest and the identification indicator are formed on the same print medium and output. The image processing apparatus (110) reads the print medium, extracts the image of interest and the identification indicator, analyzes the identification indicator to thereby acquire the setup information, and uses the setup information to process the image of interest by the image processing function set in the image processing apparatus (110) when the print medium was read.