Sealprint Image Identification by Image Auto-Registration and Image Phase Matching
This research uses the morphology technique to extract the Chinese-seal-print-images. In this research, the developed algorithm of the auto registration technique can find the precise location of the seal-print image—include the centroid of the seal-print image and the orientation of the seal-print image. The finding of the position and the orientation of the seal-print image are done automatically and without any human further effort. After finding the positions of the Chinese-seal-print-images. Image rotating, image shifting, and image interpolating techniques are used to align different Chinese-seal-print-images to the same position and the same orientation for comparison. The extracted seal-print image contains many useful geometry features. One can use these features to do the seal-print image identification. Since the entire seal-print images are aligned to the same position and the same orientation, the image phase matching technique is used to examine the difference of two Chinese-seal-print-images. The image phase matching technique involves the complex number manipulation and also finds the most salient feature of the resultant images.
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Document Type: Research Article
Publication date: 2006-12-01
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