| 基于DWT的数字视频水印技术 |
| |
| 引用本文： | 金小华.基于DWT的数字视频水印技术[J].苏州市职业大学学报,2009,20(3):19-22. |
| |
| 作者姓名： | 金小华 |
| |
| 作者单位： | 苏州市职业大学,电子信息工程系,江苏,苏州,215104 |
| |
| 摘 要： | 基于小波变换的特性，提出了一种用于视频码流的数字水印设计技术，该方案将水印算法设计在视频流的8×8像素块的编码部分，在对视频流进行可变长解码和反量化后，将置乱后的水印叠加在1帧像素块DWT系数的直流分量和部分中低频分量上，然后再量化和可变长编码恢复为视频流．详述了水印的嵌入和检测过程，给出了应用MATLAB验证该方案的结果．
|
| 关 键 词： | 数字水印 小波变换 DWT系数 视频流 MATLAB |
Video Watermark Technology Based on DWT Domain |
| |
| JIN Xiao-hua.Video Watermark Technology Based on DWT Domain[J].Journal of Suzhou Vocational University,2009,20(3):19-22. |
| |
| Authors: | JIN Xiao-hua |
| |
| Institution: | JIN Xiao-hua (Department of Electronic Information Engineering, Suzhou Vocational University, Suzhou 215104, China) |
| |
| Abstract: | Based on wavelet transform, it presented the technology of digital watermark used in the video streams. This solution designed the watermark algorithm on the encoding part of 8 × 8 pixel blocks in video bitstreams. After the VLC decoding and dequantization of video bitstreams, the harassed watermark was embedded on the DC share and some low-middle frequency AC shares of the DWT coefficients. Then the video bitstreams were resumed by the quantization and VLC encoding. The process of embedding and detecting watermark were discussed in detail. An analysis of the result of the method realized with MATLAB was given. |
| |
| Keywords: | MATLAB |
| 本文献已被 维普 万方数据 等数据库收录！ |
