Steve Eddins has developed MATLAB and image processing capabilities for MathWorks since 1993. He also coaches development teams on designing programming interfaces for engineers and scientists. Steve coauthored Digital Image Processing Using MATLAB.
I want to point you to Damian's second guest blog post on Loren's Art of MATLAB. Scattered data interpolation and data gridding definitely have application to multiple areas in image processing, and the related MATLAB capabilities have significantly improved in R2009a, the latest MATLAB release.