Apparatus and method for compensating image distortion and image displaying apparatus using the same

PURPOSE: An apparatus and a method for correcting image distortion and a video display device using the same are provided to output an original image by correcting distortion of an image output from a camera without using a convergence yoke. CONSTITUTION: A reference image generation portion generates a predetermined reference image. A camera receives the predetermined reference image and outputs the received image to a screen. A distortion information extraction portion(201) compares the image output from the camera with the reference image output from the reference image generation portion, generates distortion correction information, and corrects the distortion of the image output from the camera.