Conventionally, there are problems in that object data extracted from an original document is not object data divided into object units a user desires, and that scan data cannot be handled in the object data units when reusing the scan data. To solve these problems, the image processing apparatus extracts each object included in the original document; stores object data of each extracted object with a keyword in a storage device; and visualizes each object data on a display unit. When making multiple selection of the visualized object data individually in accordance with a user instruction, the keywords associated with the plurality of object data selected are displayed. Besides, it is made possible to change the keywords associated with the plurality of object data selected.