Patent ID: 8351097
Filing Date: 2013-01-08
Classification: H04N

Abstract:
1. An image determining apparatus, comprising: a unit configured to divide image data read out of a document in a sub-scanning direction into a first region where color shift hardly occurs and a second region where color shift easily occurs; a unit configured to detect a first color line drawing having a predetermined length and width and extending in a main-scanning direction in the first region; a unit configured to detect a second color line drawing having a predetermined length and a width larger than that of the first color line drawing and extending in the main-scanning direction in the second region; a unit configured to detect a third color line drawing having a predetermined length and width and extending in the sub-scanning direction in the image data; and a unit configured to determine whether or not the document is a color document on the basis of the number of the first, second, and third color line drawings.