Block-based progressive visual secret sharing
學年 101
學期 2
出版（發表）日期 2013-06-01
作品名稱 Block-based progressive visual secret sharing
作品名稱（其他語言）
著者 Hou, Young-Chang; Quan, Zen-Yu; Tsai, Chih-Fong; Tseng, A-Yu
單位 淡江大學資訊管理學系
出版者 Philadelphia: Elsevier Inc.
著錄名稱、卷期、頁數 Information Sciences 233(1), pp.290–304
摘要 Block-based progressive visual secret sharing (BPVSS) is an encryption technique that utilizes the human visual system to recover a secret image. The recovery method is based on building up different image blocks step by step. In the last few years, several research projects have been devoted to the study of BPVSS. However, they have some common drawbacks. Their dispatching matrices are chaotically designed by adding some redundant 0/1s in order to maintain the size as a fixed value, which makes the methods hard to be implemented. In addition, the pixel expansion ratio grows faster when the number of participants increases and the visual quality of the restored image is quite poor. In this paper, we propose a non-expanded block-based progressive visual secret sharing scheme with noise-like and meaningful shares. Experimental results demonstrate the feasibility of this scheme. Our design has several advantages over other related methods: (1) the model is concise, easy to implement, and the number of participants need not be restricted; (2) with noise-like shares, the contrast of the restored image is 50%, which means that the hidden message can be clearly recognized by the naked eye; (3) when transparencies are transferred from noise-like patterns into a meaningful cover image, the contrast in the shares and the restored image is 25%, which is still superior to that obtained in other studies; (4) our scheme is more suitable for grayscale and color secret images; (5) the size of the transparencies is the same as that of the secret image.
關鍵字 Visual secret sharing; Progressive visual secret sharing; Secret block; Steganography
語言 en
ISSN 0020-0255; 1872-6291
期刊性質 國外
收錄於 SCI EI
產學合作
通訊作者 Hou, Young-Chang
審稿制度 是
國別 USA
公開徵稿
出版型式 紙本
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