In an image processing apparatus for processing images, a transformation unit transforms an image on a first coordinate system representing a coordinate system during pickup to an image on a second coordinate system set up on a reference plane, a display unit displays an image transformed by the transformation unit and a reception unit receives setting information a user inputs in accordance with a displayed image on the display unit. For example, in the image processing apparatus, the reception unit receives, as the setting information, information to be used for image processing.