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引入多重集并结合截断差分和S盒的性质,构造出6轮中间相遇区分器,实现11轮3D密码的中间相遇攻击,恢复密钥所需的时间复杂度为2329,并结合时空折中的方法降低了数据复杂度。此外,利用新的区分器有效改进了3D算法10轮中间相遇攻击的时间复杂度,约2201次10轮加密运算。
CALCULATING LEAST RISK PATHS IN 3D INDOOR SPACE
Indoor navigation, D algorithms cognitive wayfinding
2014/4/21
Over the last couple of years, research on indoor environments has gained a fresh impetus; more specifically applications that
support navigation and wayfinding have become one of the booming indust...
一种基于量化方法的3D模型盲水印算法
数字水印 3D模型 盲检测
2009/12/28
相对非盲算法而言，盲算法因在水印检测时不需要传输原始载体而使其应用更为广泛。虽然盲水印算法的鲁棒性稍弱，但仍有提高的空间。该文提出一种3D网格盲水印算法，利用伪随机数产生经过模型质心的直线，选取以直线与模型交点为球心的球形邻域作为嵌入对象，水印信息是通过抖动调制邻域内顶点的重心来嵌入的。因为重心依赖于球形邻域所有顶点坐标，所以需解决由调整后的重心逆向估计邻域内顶点坐标问题，文中给出相应的算法。水印...
Development of Geo-simulator using 3D Solid Model and Computer Projector
Development of Geo-simulator 3D Solid Model
2015/3/9
A real solid 3D model is much better
than 3D bird’s eye view on a computer
monitor
• But, color painting of 3D solid model
was expensive and time consuming
• A LCD projector will s...