I have height profiles from an AFM image and wanted to compute the curvature of each. However, it would take me ages if I compute this manually. Are there any MATLAB scripts that could have such methods? I have attached images for your reference.
Krishna Chandran
If you can extract the data from the image then you can use the following.:
formula for curvature is attached. use finite difference to compute the first derivative and the second derivative ,example:
dy/dx = (y(i+1)-y(i-1))/2h
d2y/dx2 =y(i+1)+y(i-1)-2*y(i)/h2
h=x(i+1)-x(i)
h is the distance between two data sets in x-axis. if h is small or the no: of equally spaced data sets are large then you will get a more accurate curvature
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