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Technical Program
Paper Detail
| Paper: | TP-P5.10 |
| Session: | Image/Video Restoration and Enhancement |
| Time: | Tuesday, October 10, 14:20 - 17:00 |
| Presentation: |
Poster
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| Title: |
FREE IRIS SCENE RE-FOCUSING BASED ON A THREE-DIMENSIONAL FILTERING OF MULTIPLE DIFFERENTLY FOCUSED IMAGES |
| Authors: |
Kazuya Kodama; National Institute of Informatics | | | | | Hiroshi Mo; National Institute of Informatics | | | | | Akira Kubota; Tokyo Institute of Technology | | |
| Abstract: |
This paper describes a method of scene re-focusing with various iris shapes by integrating a sequence of multiple differently focused images. First, we introduce a formula that combines the sequence and spatial information of a scene with a convolution of a 3-D blur. The blur expresses how the scene is defocused in the sequence. Based on the formula, in the 3-D frequency domain we can design filters merging certain frequency components of the sequence to generate images that would be acquired with various iris shapes. Some experiments of scene re-focusing using synthetic and real images indicate that we can not only arbitrarily suppress blurs of the sequence but also generate images with asymmetrical blurs like motion blurs. |
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