Compare feature vectors of an image in MATLAB I am working on OCR. I have extracted features of 26 alphabets, and I want to compare them with an experimental character feature.

I have tried using Euclidean distance and correlation functions, but I am not getting good efficiency. What are some alternate methods for the same?
If you just need OCR to work, then please try the ocr function in the Computer Vision System Toolbox.

If you need to write your own, take a look at this example, showing how to train an SVM classifier using HOG features for recognizing hand-written digits.