
%0 Journal Article
%A Cheesman, S. 
%A MacLeod, I. 
%A Hollyer, G. 
%T A new, rapid, automated grid stitching algorithm
%J Exploration Geophysics
%D 1998/12/01
%V 29
%N 4
%P 301-305
%K 
%R https://doi.org/10.1071/EG998301
%U https://www.publish.csiro.au/paper/EG998301 
%X Regional compilations of gridded geophysical data from disparate individual surveys are playing an ever more important role in resource exploration. A key processing step in such compilations is the merging of overlapping grids to create a single grid. Traditional methods of connecting grids together can produce smooth final products but the process is time-consuming and has difficulty with differences that involve both long and short wavelength errors. A novel, completely automated method addresses several main challenges, such as determining how to select a path along which overlapping grids can be joined. The technique uses Fourier analysis to deconstruct the errors along a suture path, into a sum of functions with different spatial wavelengths, and applies corrections that propagate smoothly into the grids by a distance proportional to the individual wavelengths. The result is an almost seamless grid that minimises distortion from the correction process. 
