C语言图像如何放大。首先读取要放大的区域的图像信息，然后利用矩阵的repmat变换对矩阵进行拉伸。本程序可以对图像实现放大功能。-C language image to enlarge. First reading area to zoom the image information, and then use matrix repmat transform matrix stretching. This program can achieve the image magnification.