Watermarking schemes evaluation Abstract鈥擠igital watermarking has been presented as a solution to copy protection of multimedia objects and dozens of schemes and algorithms have been proposed. Two main problems seriously darken the future of this technology though. Firstly, the large number of attacks and weaknesses which appear as fast as new algorithms are proposed, emphasizes the limits of this technology and in particu-lar the fact that it may not match users expectations. Secondly, the requirements, tools and methodologies to assess the current technologies are almost non-existent. The lack of benchmarking of current algorithms is bla-tant. This confuses rights holders as well as software and hardware manufacturers and prevents them from using the solution appropriate to their needs. Indeed basing long-lived protection schemes on badly tested watermarking technology does not make sense.
标签: Watermarking watermarking evaluation presented
上传时间: 2013-12-04
上传用户:thinode
这是用C++ Builder写的两个位图转换成C51格式的提取程序源代码.仅供参考学习,请勿用于商业目的。谢谢 (1)EX1生成4096色16bit(双8bit)RGB数据 (2)EX2用于字库提取,采用横向扫描,可以在画图程序里输入汉字保存图片后转换, 但我推荐使用C51bbs上龙版的字模3输入汉字,然后保存图片或copy到画图程序,可以 很方便的制作各种菜单图片 如有什么问题可以Email跟我联系 95908@163.com 16:54 2004-5-26
上传时间: 2014-11-29
上传用户:qq1604324866
dm642通过网络接收烧写文件,然后烧写到flash当中,无需flashburn。此工程是从dm642_5a中copy过来的,加上了boot代码,为的是生成hex文件,烧在flash中,可以独立的运行。
上传时间: 2013-12-10
上传用户:JasonC
The first two functions are useful for creating a blank image of the specified parameters. A possible use is in functions that require a pointer to a result. The clone function performs an exact copy of the IplImage* parameter
标签: parameters functions specified creating
上传时间: 2013-12-21
上传用户:teddysha
C编写,实现字符串摘要、文件摘要两个功能。 里面主要包含3个文件: Md5.cpp、Md5.h、Main.cpp。其中Md5.cpp是算法的代码,里的代码大多是从 rfc-1321 里copy过来的;Main.cpp是主程序。
标签: 编写
上传时间: 2014-11-04
上传用户:冇尾飞铊
This should again compile without problems. We finally need to configure a logging system - Hibernate uses commons logging and leaves you the choice between Log4j and JDK 1.4 logging. Most developers prefer Log4j: copy log4j.properties
标签: configure Hibernat problems compile
上传时间: 2013-11-26
上传用户:wangchong
Its very useful ant java developers Create it at the top level of your project directory (New --> File, create as a simplefile) and name it build.xml. Copy and paste the xml text from Figure 3 into your build.xml file and save it.
标签: developers directory project Create
上传时间: 2014-01-26
上传用户:lifangyuan12
A fractal is generally "a rough or fragmented geometric shape that can be split into parts, each of which is (at least approximately) a reduced-size copy of the whole,"[1] a property called self-similarity. The term was coined by Benoî t Mandelbrot in 1975 and was derived from the Latin fractus meaning "broken" or "fractured." A mathematical fractal is based on an equation that undergoes iteration, a form of feedback based on recursion.[2]
标签: fragmented generally geometric fractal
上传时间: 2014-01-18
上传用户:as275944189
分别定义图形类Shape(抽象基类),继承类矩形类Rectangle、正方形类Square、 圆形类Circle;并且计算周长和面积。在另一个main函数中分别创建矩形、 正方形和圆形对象,设置所需的属性值,打印其周长和面积。(备注:只要把该文件解压,把里面的东东COPY去即可使用)
上传时间: 2017-07-25
上传用户:wuyuying
对触摸屏的接口函数(DDI DDSI)以及调用关系作了详细介绍 可作为出次接触Touch Driver的开发人员研究Touch的一个很好的起点,甚至可以直接copy 其中部分源码使用。
上传时间: 2017-07-27
上传用户:赵云兴