An Improved Non-Linear Image Enhancement Method for Video Coding

It is well known that the B-spline filter can yield a very accurate algorithm for smoothing. In this paper, it is shown that a cubic B-spline filter can be used to improve the non-linear image enhancement method. In addition, a higher-frequency component is predicted to solve the blurred problem of an enlarged image. Furthermore, a novel non-linear image enhancement compensation algorithm is proposed to use for the video coding. Finally, a computer simulation shows that the proposed method yields a better quality of the decoded image than other non-linear enhancement methods.