How to detect SURF features on image in matlab?

I am using detectSURFfeature tool but it is not working. Whatever is the image the error is shown as "Undefined function 'detectSURFFeatures' for input arguments of type 'uint8'". But the input is of uint8 only.

Answer 1

[Thorsten]

You probably have to convert the image to double

I = im2double(I);

or (without the Image Processing TB)

I = double(I)/255;

[Bhuvan Varugu]

Thank you Thosten. But it is not working too. Now the error changed to "Undefined function 'detectSURFFeatures' for input arguments of type 'double'."

Answer 2

[Dima Lisin]

detectSURFFeatures has been available in the Computer Vision System Toolbox since the R2011b release. So to use it you need MATLAB R2011b or later with the Computer Vision System Toolbox.

[Bhuvan Varugu]

Thank you. I am using matlab 2014 a with necessary extensions. Error is some where in the code.

[Dima Lisin]

Hi Bhuvan,

What do you see if you do

>> which detectSURFFeatures

Also, can you please verify that you indeed have the Computer Vision System Toolbox installed? Do you see it listed if you do

>> ver