FREE IRIS AND FOCUS IMAGE GENERATION BY MERGING MULTIPLE DIFFERENTLY FOCUSED IMAGES IN THE THREE-DIMENSIONAL FREQUENCY DOMAIN(International Workshop on Advanced Image Technology 2006)
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概要
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This paper describes a method of image generation based on transformation integrating multiple differently focused images. First, we assume that objects are defocused by a geometrical blurring model. And we combine acquired images on certain imaging planes and spatial frequencies of objects by using a convolution of a three-dimensional blur. Then, we generate free iris and focus images, including an all-in-focus image corresponding to the pin-hole iris, from the acquired images based on spatial frequency analysis with three-dimensional FFT. Some experiments of image generation utilizing synthesized images and real images are shown and extension of the method integrating multiple differently focused images in the three-dimensional frequency domain is discussed.
- 社団法人電子情報通信学会の論文
- 2006-01-03
著者
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KUBOTA Akira
Interdisciplinary Graduate School of Science and Engineering Tokyo Institute of Technology
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Kodama Kazuya
National Institute of Informatics Research Organization of Information and Systems
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Mo Hiroshi
National Institute of Informatics
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