An image processing apparatus which is capable of providing images with enhanced resolution and enhanced sharpness is provided. The image processing apparatus includes an inputter configured to receive an input of image data, an up-scaler configured to up-scale the inputted image data, a region sense unit configured to sense an edge region and a line region within the up-scaled image data by extracting brightness information of the up-scaled image data, an image corrector configured to correct the up-scaled image data in different correction methods for each of the edge region and the line region, and an outputter configured to output the corrected image data.