Abstract: An apparatus and a method for processing image capable of correcting errors due to an object difference in accordance with an element characteristic of an image reading sensor which is mounted in an image inputting device and removing an effect on the image due to a distortion of a white reference plate and a light source which are mounted in the image inputting device.

Abstract: A skew correction apparatus and method enhance transmission efficiency or recognition efficiency in facsimile transmissions or optical character recognition (OCR) by correcting the format of the copy which is input and read in a skewed manner. The skew is corrected in accordance with the following steps or functions: counting the number of pixels in a main-scanning direction until copy discriminating data are met, starting from two spots of the read data in a sub-scanning direction; sensing a skew direction of the copy using the counted number of pixels; reading skew correction data corresponding to a difference between the number of pixels of the two spots in the main-scanning direction; and correcting the skew by reading in the main-scanning direction the changed coordinates by line units with respect to all lines of the copy in the sub-scanning direction according to the skew correction data and skew direction.

Abstract: An image data enlargement/reduction method for use in a digital image processing system, performs enlargement and reduction of image data by employing a small quantity of data from a look-up table while satisfying a large range of enlargement and reduction operations as requested by a user, with a simplified circuit structure. Enlargement/reduction data is calculated by a microprocessor so that the zooming ratio can be easily modified by a software change.

Abstract: An apparatus for producing area signals in a digital video image processing system comprising memory means for storing start and end addresses of areas designated and function numbers representing the kind of editing functions of the areas designated, address generator means for generating addresses needed for accessing the memory means, buffer means for opening or closing data transferring path between the memory means and buses in accordance with the memory accessing operation effected by the address generator means and the memory accessing operation effected by a central processing unit (CPU), counter means for counting the number of video clock signals corresponding to a scanning line, address comparator means for comparating upper 8 bits of the output of the counter means and area addresses from the memory means, function number analyzer means for producing a predetermined bit number 2.sup.