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

四棱锥三维纹理贴图.有程序注释.使用OAK3D-Pyramid 3D texture mapping. Program notes. OAK3D