학술논문
MPEG-2 video watermarking using quantization index modulation
Document Type
Conference
Author
Source
2010 IEEE 4th International Conference on Internet Multimedia Services Architecture and Application Internet Multimedia Services Architecture and Application(IMSAA), 2010 IEEE 4th International Conference on. :1-6 Dec, 2010
Subject
Language
Abstract
Several video watermarking schemes have been proposed in recent years, but most of them are applied to uncompressed video. In this paper, a compressed video watermarking procedure is proposed to reduce the number of computations. In a video frame, luminance component contains more crucial information than chrominance. Also P-frames appear more frequently in the compressed video and therefore have higher watermark hiding capacity. In MPEG videos, the direct coefficient (DC) of chroma discrete cosine transform (DCT) in P frame of video is a parameter which always exists in video streams and has a high robustness. The proposed algorithm embeds the watermark data in DC component of chroma DCT of video P frames using QIM. The quality and robustness of watermarked video is evaluated under various attacks.