J. Binns, G. Gill, M. Hereld, D. Jones, I. Judson, T. Leggett, A. Majumder, M. McCrory, M.E. Papka, R. Stevens, "Applying Geometry and Color Correction to Tiled Display Walls," Visualization 2002, Boston, MA,, 1969, , .
this paper. Geometry and Color Correction Techniques Hereld et al. have developed a technique for quickly and accurately assessing and correcting the alignment and distortion of the tiled array using a commodity digital camera . In our approach we take a few pictures of test patterns covering of the entire display. Automatic analysis of these extracts a detailed geometrical mapping to subpixel accuracy of projector pixels to the display surface coordinates. We use the mapping to remove the distortions from the image by applying a piecewise bilinear warp