I get this error message when using detectSURFFeatures : Undefined function 'detectSURFFeatures' for input arguments of type 'uint8'. The docs say that the function takes uint8. What is the solution?

grayImage = rgb2gray(I); points = detectSURFFeatures(grayImage);

Answer 1

[Walter Roberson]

That requires the Computer Vision Toolbox to be licensed and installed, and r2011b or later