Image processing apparatus and determination method

摘要

A signal value representing at least one of a plurality of types of optical characteristics are calculated for each pixel from the read signal obtained and output by reading light reflected by a document placed on a document table and a document table cover while the document is covered with the cover. It is determined, based on the signal value calculated, whether or not a target pixel is a pixel in a document region. A document region is detected from the determination result.

主权项

1. An apparatus comprising:
an obtaining unit configured to obtain a read image which has a first area corresponding to an original placed on an original table and a second area corresponding to a cover over the original table, wherein the read image is read by a reading apparatus having the original table; a specification unit configured to specify a signal value corresponding to each of a plurality of color components of the read image obtained by the obtaining unit; and a determination unit configured to determine the first area distinguished from the second area by comparing at least two signal values corresponding to color components of the plurality of color components with each other.