| Presentation | 2005-09-16 High Quality and High Speed Share Images Generation Method Using Void-and-Cluster Halftoning Technique Emi MYODO, Shigeyuki SAKAZAWA, Yasuhiro TAKISHIMA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A novel visual secret sharing scheme, which is based on void-and-cluster halftoning technique, is proposed for binary halftone images. In conventional methods, there are problems in picture quality of share images or processing times. The proposed method is designed to decode the secret image by overlapping two share images with high speed and quality by inheriting characteristics of void-and-cluster halftoning method, which has features of a simple thresholding operation using a dither array constructed beforehand and high picture quality avoiding artifacts. (2, 3) or (3, 3) visual cryptography by visual secret share images are also proposed by extending the void-and-cluster method. Computer simulation shows that the proposed method can generate subjectively high quality share images and give desirable power spectrum characteristics from the view point of noise perception of human visual system. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Watermark / Visual cryptgraphy / Digital halftoning / Void-and-cluster |
| Paper # | CQ2005-55,OIS2005-40,IE2005-48 |
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| Conference Information | |
| Committee | CQ |
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| Conference Date | 2005/9/9(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Vice Chair | |
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| Paper Information | |
| Registration To | Communication Quality (CQ) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | High Quality and High Speed Share Images Generation Method Using Void-and-Cluster Halftoning Technique |
| Sub Title (in English) | |
| Keyword(1) | Watermark |
| Keyword(2) | Visual cryptgraphy |
| Keyword(3) | Digital halftoning |
| Keyword(4) | Void-and-cluster |
| 1st Author's Name | Emi MYODO |
| 1st Author's Affiliation | KDDI R&D Laboratories Inc.() |
| 2nd Author's Name | Shigeyuki SAKAZAWA |
| 2nd Author's Affiliation | KDDI R&D Laboratories Inc. |
| 3rd Author's Name | Yasuhiro TAKISHIMA |
| 3rd Author's Affiliation | KDDI R&D Laboratories Inc. |
| Date | 2005-09-16 |
| Paper # | CQ2005-55,OIS2005-40,IE2005-48 |
| Volume (vol) | vol.105 |
| Number (no) | 282 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |