how to apply curve fitting technique on binare image for find coefficient.. plz give me if any have code of matlab..

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i want to solve this problem"Curve fitting is the process of constructing a curve, or mathematical function that has the best fit to a series of data points, possibly subject to constraints. It is derived from the trajectory of the signature. In this paper, we have used the Polynomial type of fit to generate the curve which is extremely peculiar of each user as each one has a style of its own. Then we have used the corr2 function to correlate the curves of the training and the test data which verifies the signature depending on the threshold. The below figure depicts the curve of the above cropped signature after using Polynomial type of Curve Fit In addition to the Corr2 function, we also generate the 9th degree polynomial equation of the developed curve. As we now have all the coefficients of the respective equation, we use its peculiarity which is summation of all the coefficients of the equation which is fed to the neural network. If the signature is genuine then the summation of the coefficients of its curve will be same or a multiple of the data given for training.

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