Patent ID: 6415064
Filing Date: 2002-07-02
Classification: G06K,H04N

Abstract:
A skew correction apparatus in an image processor for reading data on a one-page copy and performing image processing, said skew correction apparatus comprising:a read data storing unit for storing the data read from the one-page copy; a counter for counting a number of pixels in a main-scanning direction until copy discriminating data are met, starting from two spots of said data stored in said read data storing unit in a sub-scanning direction; a lookup table data storing unit for storing skew correction data corresponding to a difference between the number of pixels of said two spots counted in the main-scanning direction; and a processing unit for correcting skew by sensing a skew direction of said copy according to a selected rule using said difference between the number of pixels counted, and by reading by line units changed coordinates from said read data storing unit according to the skew correction data stored in said lookup table data storing unit.