Rob Hess Linux下的SIFT提取源码，金字塔采样和高斯差分提取特征点，KD树搜索寻找同名点，RANSAC去粗差,Rob Hess Linux source code under the SIFT extraction, sampling and Gaussian pyramid differential extraction of feature points, KD tree search to find the same name, points, RANSAC to gross

matlab实现的图像金字塔，过程很清晰，简单易学-matlab implementation of image pyramid, the process is very clear and easy to learn

输出星星金字塔,利用循环语句控制空格和星星的输出以达到输出星星金字塔的效果-output star

模板匹配与金字塔相结合的实现过程，参考学术论文流程实现有一定的参考价值(device tree learning of LINUX4.4 based on kernel)