Fitting a model to a displacement field
2 views (last 30 days)
I have aquired a displacement field from image analysis and i want to fit a model to the field in order to be able to derive the strain.
I tried to interpolate between the points to find a function that fits but the results are not good.
The attached file contains the coordinates of the feature before (column 1 and 2) and the coordinates of the same feature after (column 3 and 4) so that for example row 1 contains the x and y coordinates of the feature before and after.
Any suggestions on where to start would be greatly appriciated.