| http://www.w3.org/ns/prov#value | - In order to read code information from input images in which prescribed codes (simply referred to as ???codes???, hereinafter) are embedded (the input images having been photographed by using image input devices such as cameras or scanners included in mobile phones), the coordinates of the four corners of the quadrangular region in which the codes are embedded are determined, and decoding is perfo
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