Patent ID: 7551328
Filing Date: 2009-06-23
Classification: H04N

Abstract:
1. An image reading apparatus comprising: a reading device formed by arranging line sensors, in which detecting elements having a time integration effect are arranged in a direction orthogonal to a relative movement direction in which the reading means moves relative to an object being detected, in a plurality of columns in said relative movement direction; a pixel component detecting device configured to detect pixel components on the basis of a model for separating first pixel values obtained in a processing unit time by said detecting elements into a plurality of said pixel components corresponding to detection positions of said object being detected; and a pixel value generating device configured to generate second pixel values corresponding to said detection positions of said object being detected on the basis of said pixel components detected by said pixel component detecting means, wherein, said pixel component detecting device includes a model generating device for generating said model that represents a relation between said first pixel values and a plurality of said pixel components corresponding to said detection positions, said pixel components being accumulated in each divided unit time obtained by dividing said processing unit time by a number of columns of said line sensors; and wherein said pixel component detecting device is configured to detect said pixel components on the basis of said model generated by said model generating device.