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| Video Watermark Using Multiresolution Wavelet Decomposition | |
| 作者姓名： | WANGFeng-bi HUANGJun-cai WANGBin SHEKun ZHOUMing-tian |
| 作者单位： | [1]DepartmentofElectronicEnginevring,DongguanUniversityofTechnologyDongguanGuangdong523106China [2]DepartmentofComputerScicnceandTechnology,DongguanUniversityofTechnologyDongguanGuangdong523106China [3]SchoolofComputerScienceandEngining,UniversityofElectronicScienceandTechnologyofChinaChengdu610054China |
| 基金项目： | Supported by the Science and Technology Plan Foundation of GuangDong (No. 2004B16001006) and the Science and Technology Plan Foundation of Dongguan (No. 2004D1015) |
| 摘 要： | A novel technique for the video watermarking based on the discrete wavelet transform(DWT) is present. The intra frames of video are transformed to three gray image firstly, and then the 2th-level discrete wavelet decomposition of the gray images is computed, with which the watermark W is embedded simultaneously into and invert wavelet transform is done to obtain the gray images which contain the secret information. Change the intra frames of video based on the three gray images to make the intra frame contain the secret information. While extracting the secret information, the intra frames are transformed to three gray image, 2th-level discrete wavelet transform is done to the gray images, and the watermark W‘ is distilled from the wavelet coefficients of the three gray images. The test results show the superior performance of the technique and potential for the watermarking of video. |
| 关 键 词： | 图像水印 内帧 直接小波转换 小波分解 DWT |
Video Watermark Using Multiresolution Wavelet Decomposition |
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| WANGFeng-bi HUANGJun-cai WANGBin SHEKun ZHOUMing-tian.Video Watermark Using Multiresolution Wavelet Decomposition[J].Journal of Electronic Science Technology of China,2005,3(2):120-122,160. | |
| Authors: | WANG Feng-bi HUANG Jun-cai WANG Bin SHE Kun ZHOU Ming-tian |
| Affiliation: | 1. Department of Electronic Engineering, Dongguan University of Technology Dongguan Guangdong 523106 China 2. Department of Computer Science and Technology, Dongguan University of Technology Dongguan Guangdong 523106 China 3. School of Computer Science and Engineering,University of Electronic Science and Technology of China Chengdu 610054 China |
| Abstract: | A novel technique for the video watermarking based on the discrete wavelet transform (DWT) is present. The intra frames of video are transformed to three gray image firstly, and then the 2th-level discrete wavelet decomposition of the gray images is computed, with which the watermark W is embedded simultaneously into and invert wavelet transform is done to obtain the gray images which contain the secret information. Change the intra frames of video based on the three gray images to make the intra frame contain the secret information. While extracting the secret information, the intra frames are transformed to three gray image, 2th-level discrete wavelet transform is done to the gray images, and the watermark W' is distilled from the wavelet coefficients of the three gray images. The test results show the superior performance of the technique and potential for the watermarking of video. |
| Keywords: | intra frame discrete wavelet transform video watermark embedding video watermark extracting |
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