How can i extract features from an image(fracture) and construct a feature vector from the texture ?

Hi i am using matlab 2010a for image processing of fracture images. But i find it difficult to extract features(variance ,smoothness,entropy) from the image? Is it possible to use a generate function call for extracting texture features from such an image?

Answer 1

[Image Analyst]

Yes. You write it like any other function. You need to do image analysis to measure whatever you need, such as area, total crack length, average width, number of branchpoints, or whatever. Then string them all together into a vector - that's your "feature vector". See my File Exchagne for demos on image analysis.

[Monisha]

Thanks. I have read through your page http://www.mathworks.com/matlabcentral/fileexchange/25157-image-segmentation-tutorial-blobsdemo. It is quite interesting.Similarly can other features like variance , entropy can be extracted from an image? Do they require an explicit function to be defined ?

[Image Analyst]

Yes, you can use var() or entropyfile(). Attached are some more demos.