G - Physics – 06 – K
Patent
G - Physics
06
K
G06K 9/68 (2006.01) G06F 15/70 (1990.01) G06F 15/72 (1990.01)
Patent
CA 2071599
ABSTRACT An image recognition system includes a method and apparatus in which images are characterized and compared on the basis of internal structure, which is independent of image size and image orientation. A library of reference images is first generated and stored, then each input image, or test image, is compared to the images stored in the library until a match is found. The image is represented in memory as nodes, lines, and curves. A plurality of descriptors, called reference keys and reference series, are generated for both the reference images and the test image. The reference library is screened for likely matches by comparing the descriptors for the test image to the descriptors in the reference images in the library. Inclusionary and exclusionary tests are performed. After screening, the each of candidate reference images is searched by comparing the pathway thorough the reference image and the pathway through the test image, and by the degree of correlation between the reference and test images. In addition, the link ratio, a measure of the portion of the test image actually matched to the reference image is computed. Searching criteria, like the screening criteria are based on internal image structure, so that the the recognition process is independent of image size and image orientation. DOCKET 1045
Pawlicki John A.
Walch Mark A.
Smart & Biggar
Technibuild Inc.
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