Bildabtastvorrichtung mit Kalibriertem Bildschattendetektionsschwellwert zur Erkennung der Schräglage von Lesedokumenten

Details

Veröffentlichungs-Nr.

EP4723612

Anmeldetag

2. Oktober 2025

Veröffentlichung

8. April 2026

Rechtsraum

EP

IPC

H04N1/387, H04N1/00

Abstract

A transportation device is configured to transport a document sheet along a transportation path. An image sensor is configured to optically scan an image at a predetermined scanning position in the transportation path and generate a scanned image that includes an image of the document sheet. An opposing member is arranged oppositely to the image sensor at the predetermined scanning position. An oblique motion detecting unit is configured to detect oblique motion of the document sheet on the basis of a shadow image of the document sheet that appears in a scanned image obtained by the image sensor. Further, the oblique motion detecting unit (a) derives a threshold value on the basis of a density of an image of the opposing member in the scanned image, and (b) detects the shadow image on the basis of the derived threshold value.

Anmelder

Firma

KYOCERA Document Solutions Inc.

Land

🇯🇵 Japan