| 摘要 |
<P>PROBLEM TO BE SOLVED: To acquire a high-quality iris image to detect the position of the iris for accurate matching. <P>SOLUTION: Iris recognition is achieved, by iris acquisition that permits a user to self-position the user's eye into an imager's field of view, locating the data defining a portion of a digitized video image of the user's eye that defines solely the iris thereof, and pattern matching, at each of a plurality of spatial scales, the spatially located data defining the iris of the user's eye with data defining a model iris, by employing normalized spatial correlation for comparing each of distinctive spatial characteristics of the respective irises that are spatially registered with one another to quantitatively determine, at each of the plurality of spatial scales, goodness value of match at that spatial scale, and then determining whether the pattern which manifests solely the iris of the user's eye matches the model iris, according to a certain combination of the quantitatively-determined goodness values of match at each of said plurality of spatial scales. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
