Image reading device

• Main Authors: Matsuzawa, Taku, Toyoda, Yoshitaka, Kawano, Hiroyuki, Takushima, Shigeru
• Format: Patent
• Language: English
• Published: 19.05.2020
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; HANDLING RECORD CARRIERS; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION; PRESENTATION OF DATA; RECOGNITION OF DATA; RECORD CARRIERS

A memory stores image data generated by sensors included in an imager and containing a component data piece for each of color components that has undergone A/D conversion by an A/D converter. A width detector detects, based on the image data having undergone image processing by an image processor, the width along the main scanning direction of a duplicate area in which pieces of image data generated by adjoining sensors overlap each other. A displacement detector detects, based on the width of the duplicate area along the main scanning direction, a displacement of a scan target object for each of optical systems included in the imager. A first blur corrector performs blur correction on the component data piece using a point spread function for each of the color components that is dependent on a displacement of the scan target object. An adjuster adjusts, based on a transfer magnification dependent on a displacement of the scan target object, the size of an image for each of the color components indicated by the component data piece. A combiner combines the images by superimposing portions of the component data pieces.