IMAGE PROCESSING APPARATUS FOR DETERMINING A THRESHOLD FOR EXTRACTING AN EDGE PIXEL BASED ON A REGION CORRESPONDING TO A SURFACE FACING AN IMAGING DEVICE

• Main Authors: MIYASHITA, Jun, OHMI, Kunihiko
• Format: Patent
• Language: English
• Published: 16.04.2020
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION

An image processing apparatus includes a processor for acquiring an input image, calculating a fluctuation range of a gradation value of a pixel within a region corresponding to a document backing in the input image, determining a threshold, based on the fluctuation range, extracting an edge pixel c...