CAJ | 학술논문

视频水印技术是保护数字视频版权的一种有效方法.提出一种基于3D DWT的彩色视频水印算法,按场景以16帧划分视频,在各子段YCbCr颜色空间上对Y分量进行二级三维小波变换,利用三维小波低频帧间系数相近而不相同的特性进行水印嵌入,并实现了水印的盲提取.实验结果表明,该算法在保证含水印视频图像质量的同时具备良好的鲁棒性,对各种视频几何攻击及MPEG压缩均具有较强的抵抗能力.
시빈수인기술시보호수자시빈판권적일충유효방법.제출일충기우3D DWT적채색시빈수인산법,안장경이16정화분시빈,재각자단YCbCr안색공간상대Y분량진행이급삼유소파변환,이용삼유소파저빈정간계수상근이불상동적특성진행수인감입,병실현료수인적맹제취.실험결과표명,해산법재보증함수인시빈도상질량적동시구비량호적로봉성,대각충시빈궤하공격급MPEG압축균구유교강적저항능력.
Video watermarking technology is an efficient method to protect the copyright of digital video.A color video water-marking algorithm based on 3D DWT is presented.It partitions the video with 16 frames in each scene.The two level and three dimensional wavelet transform is carried out in the Y component of YCbCr color space,and the watermark is embedded in the lowest frequency frames by using the characteristic that the coefficients are close and different.The watermark can be extracted without original video.Experiment results show that the image quality of embedded video is good and the algorithm is robust.It can effectively resist all kinds of video geometrical attacks and MPEG compression.