Results 61 to 70 of about 11,061,091 (270)
PYTHON IMPLEMENTATION OF VISUAL SECRET SHARING SCHEMES [PDF]
Visual secret sharing schemes (VSS) represent an important concept of visual cryptography. They permit the sharing of a secret image between multiple participants so that only authorized groups can recover the secret.
Ruxandra Olimid
core
Multi-level visual secret sharing scheme with Smooth-Looking [PDF]
, 2010 [[abstract]]In traditional visual secret sharing (VSS) scheme, the pixel expansion is a drawback which not only increases the transmission cost, but also distorts the recovered secret image.
Chen, Hong-Hao ; Lee, Cheng-Chi ; Lee, Chih-Chiang ; Wu, Hsien-Chu ; Tsai, Chwei-Shyong
core
Deep Underground Science and Engineering, EarlyView.B1 is bord width 1, B2 is bord width 2, L is the pillar length, W is the pillar width, red color and letter A represent the pillars, and white color and number 1 represent excavated areas. Pstress is the average pillar stress; σv is the vertical component of the virgin stress, MPa; and e is the areal extraction ratio. e = B o B o + B P ${\rm{e}}=\frac{{
Tawanda Zvarivadza +4 more
wiley +1 more source
Deep Underground Science and Engineering, EarlyView.This study demonstrates the feasibility of an underground closed‐loop thermal storage facility at a post‐mining site, intended for seasonal heat energy storage. Its principal design shows water flow directions in winter and summer (1, 2), heat pumps (3), an upper water reservoir (4), and connecting pipes (5).
Dmytro Rudakov, Oleksandr Inkin
wiley +1 more source
Secret image sharing with threshold set [PDF]
, 2012 Secret image sharing is an attractive research problem in information security filed. According to the high redundancy of the digital image, the paper proposed an entirely new secret image sharing scheme with threshold set.
Tang, Dan, Liu, Kui
core +1 more source
On Multi-image Random Grids by Arbitrary Transformations
Human-Centric Intelligent SystemsRandom grids are a method for visual secret sharing, whereby a secret image is encoded into a number of shares, each of which is maximally entropic. There has been growing interest in hiding multiple images in a scheme, such that additional images are ...
Neil Buckley +2 more
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.This study investigated the spatial patterns and development mechanisms of urban underground space (UUS) in Shanghai using underground points of interest data. It revealed distinct development mechanisms between the main city and suburbs, highlighting the need for differentiated UUS planning and policies to optimize underground space resources ...
Chenxiao Ma +3 more
wiley +1 more source
Reversible secret image sharing scheme based on difference expansion [PDF]
, 2013 碩士(t, n)門檻式機密影像分享技術是將機密影像分成n張無意義的分享影像並分配給n位參與者，其中任何超過t位參與者的群組，都能利用他們的分享影像還原機密影像。反之，則不能還原機密影像。同時，為降低分享影像的顯著性，可進一步藉由偽裝學(Steganography)技術，將分享影像藏入有意義的掩護影像中形成一張偽裝影像，來避免攻擊者的注意力與提供管理上的便利性。本文提出結合偽裝學技術的可逆機密影像分享技術，讓參與者在還原過程中，除了可以從偽裝影像中擷取機密影像外，還可以將偽裝影像回復成掩護影像 ...
劉崇安; Liu, Chong-An
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Deep Underground Science and Engineering, EarlyView.The graphical abstract illustrates a reconstructed in situ thermo‐hydro‐mechanical (THM) framework in which porosity serves as the central variable linking stress, pore pressure, and temperature to evolving mechanical properties of rocks. Under burial conditions, in situ stress, pore pressure, and temperature jointly govern volumetric strain and ...
Mingyuan Lu +5 more
wiley +1 more source
Nonlinear Secret Image Sharing Scheme [PDF]
, 2014 Over the past decade, most of secret image sharing schemes have been proposed by using Shamir's technique. It is based on a linear combination polynomial arithmetic.
Gil-Je Lee, Sang-Ho Shin, Kee-Young Yoo
core +1 more source