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Description: 用SSE2汇报语言实现的H.264视频编码标准中的DCT变换。-using SSE2 reporting language of H.264 video coding standard of DCT.
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Size: 24576 |
Author: 王宏志 |
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Description: :数字水印技术在数字产品的版权保护中起着非常重要的作用。概括了数字水印技术的现状及其基本原理,并
分析了变换域数字水印算法的优势,详细阐述了DCT 水印嵌入和提取算法的原理和步骤。最后在Matlab 平台下对DCT 数
字水印算法进行了仿真,仿真结果证实了DCT 算法的强健性和鲁棒性。-: digital watermarking technology in the digital copyright protection products played a very important role. Summarized the digital watermarking technology and the status of the basic principles and transform domain analysis of digital watermarking algorithm advantages, elaborate on the DCT watermark embedding and extraction algorithm theory and steps. Finally in Matlab platform for DCT digital watermarking algorithm for the simulation, Simulation results confirmed the DCT are strong and robust.
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Size: 525312 |
Author: my name |
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Description: 数字水印技术近年来得到了较大的发展,基于变换域的水印技术是目前研究的热点。该文提出了一种基于DCT域的自适应水印算法。实验结果表明,这种算法具有良好的性能,实现的水印具有不可见性,而且具有较好的鲁棒性。
-digital watermarking technology in recent years has been substantial development, based on the transform domain watermarking technology is a hot topic at present. The paper presents a DCT-based Adaptive watermarking algorithm. Experimental results show that the algorithm has good performance, the watermark is invisible, but also better robustness.
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Size: 663552 |
Author: my name |
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Description: 一个基于dct变换的数字水印算法的源程序,可供进行数字水印学习和研究的学生及科研工作者学习参考-DCT-based digital watermarking algorithm transform the source code, available for study and research of digital watermarking students and researchers to study the reference
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Size: 191488 |
Author: 王晓华 |
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Description: 数字水印DCT嵌入与提取水印matlab实现实例！-Digital Watermarking DCT watermark embedding and extraction matlab examples realize!
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Size: 1024 |
Author: 李杰 |
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Description: 多种基于DCT变换域水印方法实现论文。对于数字水印初学者是很好的基础文案。-A variety of DCT-based transform domain watermarking method papers. Digital Watermarking for beginners is a good basis for the Record.
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Size: 2907136 |
Author: james |
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Description: 基于Dct的视频检索。-Dct-based video retrieval.
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Size: 44032 |
Author: jerry |
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Description: Mpeg2视频压缩时进行空间压缩时的离散余弦变换矩阵的verilog实现，采用modelsim验证-Mpeg2 video compression when space compression of discrete cosine transform matrix realize Verilog using ModelSim verification
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Size: 29696 |
Author: mayang |
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Description: 用Verilog HDL编写的离散余弦变换，可用于视频图像压缩，并在modelsim SE6.0中仿真通过-Verilog HDL prepared with discrete cosine transform can be used for video image compression, and modelsim SE6.0 simulation through
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Size: 1024 |
Author: yangyanwen |
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Description: 用于视频图像编码的8×8DCT变换，可用于MPEG4.H263等VHDL编程-For video images encoded 8 × 8DCT transform, can be used to MPEG4.H263 such as VHDL Programming
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Size: 108544 |
Author: zs |
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Description: 视频处理中经常需要进行DCT变换，这是本人自己编写的、可以对图像样点进行一维和二维的DCT变换-Video processing often require DCT transform, which is I have written, you can kind of image points of one-dimensional and two-dimensional DCT transform
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Size: 9216 |
Author: tobetter |
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Description: 一个mpg压缩的水印提取程序,考虑到了几种压缩格式,并基于此提出DCT频率域上的水印提取.对学习视频水印的人有help-Mpg compressed a watermark extraction procedure, taking into account several types of compression formats, and based on this proposed DCT frequency domain watermark extraction. For learning video watermarking help people
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Size: 1024 |
Author: zzy |
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Description: 利用原本的256*256影像矩陣 計算出DCT矩陣-Use of the original 256* 256 video matrix to calculate DCT matrix
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Size: 513024 |
Author: 詹包 |
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Description: 实现图像压缩中的DCT变换，尤其是对于H.264视频标准中的DCT变换。-The realization of image compression in DCT transformation, especially for H.264 video standard DCT transform.
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Size: 2048 |
Author: 张小伟 |
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Description: 为保证网络信息传输的安全性,提出一种视频图像加密方法。该方法引入混沌系统中的Logistic映射和
Baker映射,结合H·264视频压缩编码特点,利用Baker映射对DCT (Discrete Cosine Transform)变换量化后
的块进行位置置乱,
-In order to ensure the safety of information transmission network, and a video image encryption method. This method is the introduction of chaotic systems in Logistic mapping and Baker mapping, combined with H 264 video compression coding features, the use of Baker mapping of DCT (Discrete Cosine Transform) transform to quantify the location of block after scrambling,
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Size: 155648 |
Author: 武同学 |
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Description: 三维DCT变换是在空间信息上增加了一维的时间维度，对视频系列直接进行压缩-Three-dimensional DCT transform information in the space are added to one-dimensional time dimensions of the video series for direct compression
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Size: 14336 |
Author: farmer |
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Description: 已知两个不同图像块亮度数据如下：
（1）分析DCT原理，采用DCT方法，编程并计算相应的DCT系数，分析系数分布特点。
（2）依据视觉特性分析量化表步长的分布特点，完成DCT系数量化。
（3）采用Z形扫描，实现输出数据的统计编码，形成Video stream。
（4）采用IDCT重建图像亮度数据，计算SAD大小，分析产生误差的原因及采用DCT进行数据压缩的原理。（ ）
（5）分别利用左上角1、3、6个系数重建图像，计算相应的SAD，并由此分析直流和低频系数的重要性。
-Known brightness of two different image data block is as follows: (1) Principles of analysis of DCT, the DCT method, program and calculate the corresponding DCT coefficient, analysis of distribution coefficients. (2) quantitative analysis based on visual characteristics of the distribution of long-form features step-by-step to complete the DCT coefficient quantization. (3) the use of Z-scan output data to achieve statistical encoding, the formation of Video stream. (4) the use of the reconstructed image brightness IDCT data to calculate the SAD size, analysis of the causes of errors and the use of DCT for the principle of data compression. () (5), respectively, a factor of 1,3,6 using the upper left corner of the reconstruction of images, calculating the corresponding SAD, and the resulting analysis of DC and the importance of low-frequency coefficients.
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Size: 1024 |
Author: 张元 |
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Description: DCT based video watermarking using pseudo random factor
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Size: 9365504 |
Author: guru |
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Description: 视频压缩标准，mpeg。h.264,帧内压缩，帧间预测，DCT，反DCT，视频解码，编码流程-Video compression standards, mpeg. h.264, frame compression, inter-frame prediction, DCT, anti-DCT, video decoding, encoding process
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Size: 2622464 |
Author: 白明江 |
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Description: Very thorough discussion of Data Hiding / Steganography / Watermarking of video with DCT-Very thorough discussion of Data Hiding/Steganography/Watermarking of video with DCT
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Size: 4235264 |
Author: SimonS65 |
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