An improved linear image interpolation algorithm

In this paper an improved method of linear interpolation to solve the problem of the traditional bilinear interpolation which will inevitably generate edge blurring after interpolated is improved.The algorithm first converts the interpolated point is divided into three categories,and then select the appropriate known point interpolation.The experimental results of two classic images called Lena and pepper show that,the algorithm is similar with the bicubic,but the amount of calculation is much smaller than the bicubic method,it can effectively maintain the image edge information and improve the image quality.