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Description: mpeg-4编解码系统的代码，可以用来开发自己的mpeg-4编解码系统，也可以在其中加入自己的代码，开发视频水印系统。-MPEG-4 coding system code can be used to develop its own MPEG-4 coding system, also incorporated in the code, the development of video watermarking system.
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Size: 338944 |
Author: qiqi |
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Description: 提取视频中的帧嵌入图片水印，要求图片大小为<=16*16，因为有水印嵌入量的限制-Extraction of video picture frames embedded watermark, image size requirements for
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Size: 17408 |
Author: hemeijuan |
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Description: A Novel Audio Watermarking Algorithm for
Copyright Protection of Digital Audio
Abstract
Digital watermark technology is now drawing attention
as a new method of protecting digital content from unauthorized
copying. This paper presents a novel audio watermarking
algorithm to protect against unauthorized copying
of digital audio. The proposed watermarking scheme includes
a psychoacoustic model of MPEG audio coding to
ensure that the watermarking does not affect the quality of
the original sound. After embedding the watermark, our
scheme extracts copyright information without access to the
original signal by using a whitening procedure for linear
prediction filtering before correlation. Experimental results
show that our watermarking scheme is robust against
common signal processing attacks and it introduces no audible
distortion after watermark insertion.
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Size: 269312 |
Author: ashraf |
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Description: mpeg compression using matlab
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Size: 3755008 |
Author: bhuvy |
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Description: 在MATLAB环境下进行对MPEG视频中图像的提取，对于视频技术爱好者有一定的参考价值-In the MATLAB environment with MPEG video on the extraction of image for video enthusiasts with some reference value
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Size: 6144 |
Author: trszq |
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Description: Abstract—Based on the observation that low-frequency DCT
coefficients of an image are less affected by geometric processing,
we propose a new blind MPEG-2 video watermarking algorithm
robust to camcorder recording. Both the embedding and
extraction of the watermarks are done in the compressed domain.
The mean of the low-frequency DCT coefficients of the video is
temporally modulated according to the information bits. To
reduce complexity, we embed watermark in the prediction error
signals of the B-frames. Experimental results show that the
proposed scheme achieves high video quality and robustness to
camcorder recording, trans-coding, frame-rate conversion, and
geometric attacks on common test videos.
Platform: |
Size: 136192 |
Author: lie |
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Description: 基于JPEG、MPEG标准的压缩域数字水印系统不仅节省了大量的完全解码和重新编码过程，而且在数字电视广播及VOD(Video on Demand)中有很大的实用价值。-Based on JPEG, MPEG compression standard digital watermarking system not only saves a lot of full decoding and re-encoding process, but also in digital television broadcasting and VOD (Video on Demand) has great practical value.
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Size: 90112 |
Author: zhang |
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