图像浮雕算法及其在防伪印刷中的应用  

Image Relief Algorithm and Its Application in Security Printing

作　　者：国伟[1] 杨斌[2] 亓文法[2] 储晓刚[1] 

机构地区：[1]中国检验检疫科学研究院,北京100123 [2]北京大学计算机科学技术研究所,北京100871

出　　处：《中国印刷与包装研究》2011年第1期24-28,共5页China Printing Materials Market

摘　　要：图像浮雕技术是指通过一种特殊处理,改变二维平面图像中的有效内容、图像边缘或者特定区域的颜色值,增强图像立体显示效果的技术。基于孔斯曲面理论,本研究提出了一种新的矢量图像浮雕算法,即通过矢量线条的局部变形来再现图像雕刻般凹凸效果。实验表明,通过上述方法得到的图像浮雕图案克服了现有算法中固定浮雕角度偏移的缺陷,所表现的浮雕凹凸效果更加细腻,既能达到美观的艺术效果,同时作为一种非常重要的版纹防伪元素在防伪印刷中有着广泛的应用价值。Image relief can enhance three-dimensional display effect of image through some special treatments by changing the color value of edge and specified areas and effective content in the two-dimensional image.In this paper,based on the generalization of Coons Patch＇ construction,a new algorithm of generating vector image relief was proposed,which can reproduce the sculpture-like concave-convex display effect through local deformation of vector curves.Experimental results showed that the image relief obtained by this method can overcome the defect of fixed angel offset in existing algorithm,so that more flexible local offset transform methods of the vector curves will be available.Further,the image relief with beautiful artistic effect,as a very important shading anti-counterfeit element,is can be widely used in security printing.

关 键 词：图像浮雕 版纹防伪 孔斯曲面 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]