为了改善超分辨率重建图像的效果,提出了一种新的基于小波-contourlet变换图像插值算法,能够有效避免重建图像边缘和轮廓的扭曲,提高图像目标边界的规律性.本算法是用基于小波变换线性插值作为重建初步估计,使用两个约束条件的迭代投影改善了图像的分辨率.实验结果表明,跟小波变换线性插值相比,该文提出的算法具有更好的效果,并能达到较高的信噪比.“,”In order to improve the superresolution of image,We present a novel image interpolation algorithm that uses the new wavelet-contourlet transform to avoid distorting edges and contours,and improve the regularity of object boundaries in the generated images. By using a simple waveletbased linear interpolation scheme as our initial estimate,we use an iterative projection process based on two constraints to drive our solution towards an improved high-resolution image. Experimental results show that the new algorithm brought forward in this paper has better performance than Wavelet linear interpolation and could achieve high PSNR.