This presentation is the property of its rightful owner.
Sponsored Links
1 / 21

基于模糊理论和小波变换的数字水印算法 PowerPoint PPT Presentation


  • 115 Views
  • Uploaded on
  • Presentation posted in: General

基于模糊理论和小波变换的数字水印算法. 导师:师黎 姓名:牛晓可. 汇报内容. 引言 模糊系统的设计 水印的嵌入和提取 仿真实验 结论. 1.1 选题意义. 1 引言. 数字水印通过将数字序列号、文字、图像标志等版权信息嵌入到多媒体数据中,确定产品的所有权或校验其内容的原始性,以起到版权保护的作用。 自然界经过数亿年的长期进化使得动物的视觉系统成为目前已知的功能最完备、机制最优秀的信息处理系统之一。视觉的生物组织,外部客体的特征以及成像过程均具有层次结构,因此,视觉表象能以多种尺度把图像的性质表达清楚。. 1.2 整体思路. 1 引言.

Download Presentation

基于模糊理论和小波变换的数字水印算法

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


4162972


4162972


4162972

1.1

1


4162972

1.2

1

  • D.MarrGauss


4162972

1.3

1

  • (DCT)


4162972

2


4162972

2

  • 1 En(Bk)En(Bk){smooth,odn, rough }

  • 2 Std(Bk) Std(Bk){flat,texture, edge }

  • {vs,s,b,vb}


4162972

2

    • if (En(Bk) is smooth) and (Std(Bk) is flat) then (is vs )

    • if (En(Bk) is odn) then (is s )

    • if (En(Bk) is rough) and (Std(Bk) is edge) then (is b)

    • if (En(Bk) is rough) and (Std(Bk) is texture) then (is vs )


4162972

3

3.1

  • En Std

  • En Std k

  • (DWT) k


4162972

3

  • Io(i,j)akw(i,j) Iow(i,j)

  • IDWT


4162972

3

3.2

  • DWT


4162972

4

  • 512512Lena6464 MCK


4162972

4

  • 1DCT

  • 2


4162972

4


4162972

1

4


4162972

2

4

0.9833


4162972

2

4

0.8645


4162972

5


4162972


4162972

6.

  • . . .2011


4162972


  • Login