Improved Adaptive Image Interpolation Algorithm
Yi Zhan · Jisuanji gongcheng · 2010
The Hao-Cecilia image interpolation algorithm can eliminate the zigzagging artifacts better,but the shortcoming of the expansion ratio of 2 is inherent.In this paper,a novel linear image interpolation method is proposed to overcome it.The Euler equation of the variational regularizer is discretized using a Taylor expansion.The interpolation takes place along the direction of level line,which eliminates the zigzagging artifacts and suppresses blurring of edges.Numerical experiments demonstrate that the proposed algorithm can obtain better visual effect and higher Peak Signal Noise Ratio(PSNR).