k-means algorithm for construct vocabulary for bag of words

Hi All,

I have medical images and I need to classify them to normal and abnomal using bag of words model where I divided each image to patches(blocks) and extracted local features from each patch,my question how can I use k-means algorithm to constrcut visual words vocabulary,could any one provide me matlab code for this job,and thanks in advance.

Answer 1

[Dima Lisin]

There is now support for image classification using the bag of words model in the Computer Vision System Toolbox. See this example.