Method and image sensor for image sharpening, and apparatus having the same

PURPOSE: An image sharpening method, an image sensor, and devices with the same are provided to distinguish image features in noise and sharpen only the image features. CONSTITUTION: An image signal processor calculates the edge direction and the edge amplitude of each pixel(S10). The image signal processor generates a histogram(S20). The image signal processor sets a main edge direction in the histogram(S30). The image signal processor generates a sharpening attenuation LUT(Look Up Table)(S40). The image signal processor calculates the degree of sharpening(S50). The image signal processor sharpens each pixel(S60).