Scanned of plot in journal -> regression equation

I am seeking a medthod of taking a scan image of a plot, feed it to image processing for rotation (so axis would line up) and scaling. Finally, take the data points into regression analysis for best fit equation.

Thanks you for your assistance.

Answer 1

[bym]

see reverse plot in file exchange

http://www.mathworks.com/matlabcentral/fileexchange/4316-reverseplot