一种基于四平面的图像插值算法

An Image Interpolation Algorithm Based on Four Planes

针对现有图像插值算法存在的不足,提出了四平面插值算法,根据待插入点周围的4个像素点结合周边的像素点,从4个平面中选择一个作为插值平面,对于不符合平面插值的情况,则利用双线性插值,规避了用同一个插值公式对所有像素进行插值存在的不足,实验结果和数据分析表明了本方法的有效性。

Aiming at solving the problem existing in image interpolation algorithm,a four-plane interpolation algorithm is proposed.In the new algorithm,one plane is selected from the four planes for interpolation,based on the four pixels around the inserting point and surrounding pixels.While the bilinear interpolation formula is used for special cases,thereby avoiding the shortcomings of applying the same interpolation formula to all pixels.The effectiveness of the interpolation method is proved by experimental results and data analysis.