Patent ID: 7275219

Claim:
A method for generating a presentation of a region-of-interest in an information representation for display on a display screen, comprising: determining a mapping of original texel corner coordinates in said representation to distorted texel corner coordinates for a lens initially located at a first location in said representation, said distorted texel corner coordinates produced by applying a two-dimensional distortion function defining said lens to said original texel corner coordinates, said lens for rendering within said presentation a magnified region for said region-of-interest at least partially surrounded by an at least partially compressed region where said magnification decreases to that of said representation surrounding said lens to provide context for said magnified region with respect to said representation, said representation having uniform texels, each texel having at least three corners, and each corner having a respective original texel corner coordinate; calculating a displacement from said first location to a second location in said representation, said second location being that of said region-of-interest; adjusting said mapping with said displacement to produce an adjusted mapping to thereby relocate said lens to said second location; copying texel information from said representation to said relocated lens at said second location according to said adjusted mapping to thereby generate said presentation of said region-of-interest; and displaying said presentation on said display screen.