图片放大源代码，你可以利用此代码对光栅图和矢量图进行任意的放大和缩小，达到意想不到的效果。-image to enlarge the source code, you can use this code to vector and raster map adheres to the pan and zoom to reach an unexpected effect.

用canvas画矢量图片可以自动适应缩放 图片不失真-Canvas art Vector Image can automatically adapt to scale the image distortion

The VLFeat open source library implements popular computer vision algorithms specializing in image understanding and local featurexs extraction and matching. Algorithms incldue Fisher Vector, VLAD, SIFT, MSER, k-means, hierarchical k-means, agglomera