초록 ▼

A method is described for selecting an enrollment image or standard from multiple close-up images of a subject such as a human eye. The selected image is the one image that best represents the appearance of that subject to an image processing system which identifies subjects by comparison of later t

A method is described for selecting an enrollment image or standard from multiple close-up images of a subject such as a human eye. The selected image is the one image that best represents the appearance of that subject to an image processing system which identifies subjects by comparison of later taken images of subject to the selected image.

대표청구항 ▼

[ I claim:] [1.] A method of selecting a master enroll image against which other images will be compared using image matching techniques to identify a subject in the image, the master enroll image being selected from a plurality of images wherein each of said plurality of images is formed of pixels,

[ I claim:] [1.] A method of selecting a master enroll image against which other images will be compared using image matching techniques to identify a subject in the image, the master enroll image being selected from a plurality of images wherein each of said plurality of images is formed of pixels, the method comprising the steps of:a) collecting a first set M of images of a subject, said first set M of images being collected at different focus settings;b) computing a focus value F of each image in said first set M, and selecting a second set N of images having a focus value within a selected range;c) comparing each image in the second set N of images with all of the other images in the second set N to determine if a match is found between that image and each other image in the second set N using the image matching techniques;d) for each image in set N recording how many successful matches were made;e) forming a third set S of images which is comprised of those images from set N having at least a predetermined number of successful matches; andf) selecting the master enroll image from said third set S of images.