数字图像处理科目中一道有关缩放图像的典型问题的答案-Zooming and Shrinking Images by Pixel Replication

通过像素复制放大或缩小图像实验，imgchang1函数为缩小图像，imgchang2函数为放大图像-By pixel replication zoom in or out experiments, imgchang1 function to narrow the image, imgchang2 function enlarge image

利用matlab对图像进行采样处理，采用邻近像素复制平滑的方式-Using matlab image sampling, a neighboring pixel replication smooth way