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15.5.295 gridmatch

gridmatch(image1, image0, grid_x, grid_y, window_x, window_y, gausswidth [, mode] [, /vocal])

Determines and returns displacement of one image compared to another.


is image under investigation.


is the reference image.

grid_x grid_y

are the coordinates of the grid of (centers of) subimages for which displacements are returned.

window_x window_y

are the dimensions of the subimages.


is the width of the gaussian window applied to the subimages to reduces edge effects.


is a flag. If it is set, then a quality parameter is also returned, as the third coordinate of the result.

Keyword /vocal enables display of various warning messages.