A novel scene descriptor and outdoor scene recognition method

Bag-of-Words representation based on visual words has been approved to be used widely in scene classification. Visual words are usually constructed by using SIFT(Scale Invariant Feature Transform) of patches. Traditional SIFT descriptor is limited in describe the outdoor scene completely and accurately because it does not consider the multi-directional context and global color information of image. In this paper, we propose that a new scene descriptor and classification method based on SIFT(NC-SIFT, Color Multi-Directional Context SIFT) feature descriptor of key word of patches. Firstly, local SIFT combined with the context information is extracted based on image patch; Then, BOW(Bag of Words) is obtained by K-means clustering and histogram statistics and the scene recognition based on SVM classifier using BOW which fuse the global color vector is accomplished respectively.