LOOKUPTABLE GENERATING METHOD FOR IMAGE RESOLUTION COMPENSATION, IMAGE RESOLUTION COMPENSATING APPARATUS AND METHOD USING LUT

摘要

PURPOSE: A lockup table generating method, an image resolution compensating apparatus using the same, and a method thereof are provided to compensate resolution of a photographed image by using resolution degradation rate as a parameter. CONSTITUTION: A photographing unit(110) includes a transparent dome cover. A DCT(Discrete Cosine Transform) unit(150) distributes a photographed image into a block of a fixed size. The DCT performs discrete cosine transform about image data of each block. A resolution correction unit(160) increases coefficient corresponding to a vertical component, a horizontal component, and a diagonal line component which shows a spatial characteristic of the image. [Reference numerals] (110) Photographing unit; (120) Driving unit; (130) Control unit; (140) Input unit; (150) DCT unit; (160) Resolution correction unit; (170) Quantumization unit; (180) Encoding unit