Bag of words training and testing opencv, matlab

Question

I\'m implementing Bag Of Words in opencv by using SIFT features in order to make a classification for a specific dataset. So far, I have been apple to cluster the descriptors an

Answer 1

Here's a very good article introducing Bag of Words model for classification using OpenCV v2.2. http://app-solut.com/blog/2011/07/the-bag-of-words-model-in-opencv-2-2/

A follow-up article on using Normal Bayes Classifier for image categorization. http://app-solut.com/blog/2011/07/using-the-normal-bayes-classifier-for-image-categorization-in-opencv/

Also includes a ~200-line code demo on Caltech-256 dataset is available. http://code.google.com/p/open-cv-bow-demo/downloads/detail?name=bowdemo.tar.gz&can=2&q=

Here's something to get a intuitive feel of the process of Image Classification: http://www.robots.ox.ac.uk/~vgg/share/practical-image-classification.htm

Really helped me clarify a lot of questions. I hope it helps someone. :)