Image processing apparatus and image processing method

An image processing method adapted to detect a unique portion extending in a predetermined direction from a printed image, the image processing method comprising:

• a generating step of generating inspection target image data on a basis of read image data resulting from reading the image;
• a setting step of setting inspection target areas in the inspection target image data;
• and
• an extracting step of performing an image processing for extracting the unique portion of the inspection target areas set by the setting step, wherein
• the setting step sets the inspection target areas so as to make a ratio of a range occupied by inspection target areas to an entire image area of the inspection target image data in the predetermined direction larger than a ratio of a range occupied by inspection target areas to the entire image area in a direction intersecting with the predetermined direction.

A non-transitory computer readable storage medium that stores a program instructing a computer to perform an image processing method adapted to detect a unique portion extending in a predetermined direction from a printed image, wherein

• the image processing method comprising:
• a generating step of generating inspection target image data on a basis of read image data resulting from reading the image;
• a setting step of setting inspection target areas in the inspection target image data;
• and
• an extracting step of performing an image processing for extracting the unique portion of the inspection target areas set by the setting step, wherein
• the setting step sets the inspection target areas so as to make a ratio of a range occupied by inspection target areas to an entire image area of the inspection target image data in the predetermined direction larger than a ratio of a range occupied by inspection target areas to the entire image area in a direction intersecting with the predetermined direction.