기울기 영역에서의 영상 보간법

In this paper, we propose a novel image interpolation method in gradient-domain. We transform the pixel-domain image to the gradient-domain image and estimate the gradient of the high resolution (HR) image using geometric and gradient constraints. The estimated gradient of the HR image is inverse-transformed to obtain the pixel-domain HR image. Experimental results show that the proposed method provides more visually appealing results than the conventional methods.