经典程序，实现3种插值算法，可以做到任意比例的图像缩小或者放大，且长宽比例可以不同-classic procedures, three kinds of interpolation algorithm, can do arbitrary proportion of narrow or enlarge images. and the ratio of length to width can be different

图像处理，2倍放大算法，代码实现2倍放大，以及放大图像的区域选取功能-Image processing, 2 times zoom algorithm, code 2 times magnification, and zoom the image area selection feature

将2D图像中的局部区域放大，采用了较快的插值算法-2D image will zoom in the local area, using a fast interpolation algorithm

通过频域变换的方法实现图像的放大，该代码是实现对4:2:0YUV视频序列的放大，相对于普通的插值算法有较好的效果。-By frequency-domain transform method for image magnification, the code is to achieve the 4:2:0 YUV video sequence amplification, relative to the general interpolation algorithm has a good effe

scale2x，是一个图像放大的算法，C写的，很不错-Scale2x, is an image of the algorithm, C language to write, very good