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dwprotected
Matlab source code for DCT-based watermarking for grayscale images. DCT-based watermark recovering without resorting to the uncorrupted original image. Digital watermarking has been proposed as a viable solution to the need of copyright protection and authentication of multimedia data in a networked environment, since it makes possible to identify the author, owner, distributor or authorized consumer of a document.
A new watermarking technique to add a code to digital images is presented: the method operates in the frequency domain embedding a pseudo-random sequence of real numbers in a selected set of DCT coefficients. Watermark casting is performed by exploiting the masking characteristics of the Human Visual System, to ensure watermark invisibility. The embedded sequence is extracted without resorting to the original image, so that the proposed technique represents a major improvement to methods relying on the comparison between the watermarked and original images.
- 2009-07-13 12:14:31下载
- 积分：1
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abc
行商问题是一个经典的NP完全问题,多人旅行商问题的求解则更具挑战性。以往对求解多人旅行商问题的研究局限于以所有成员路径总和最小为优化标准(Salesmen problem is a classical NP complete problem, many people are solving the traveling salesman problem more challenging. Solving the traveling salesman problem of many previous studies limited to minimize the sum of all the members of the paths to optimize the standard)
- 2011-05-01 15:45:30下载
- 积分：1
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ConvexCombination
Convex Combination with fuzzy sets. this code demonstrate the acomplishment of the requirements of two fuzzy sets to make a convex combination.
- 2014-08-22 11:58:17下载
- 积分：1
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VoicePly
record, save, append & play files of audio
- 2010-10-25 02:23:35下载
- 积分：1
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kalman.rar
这是卡尔曼滤波算法的一个源程序，希望对大家有所帮助。(Kalman filter algorithm which is a source, we want to help.)
- 2011-05-02 11:17:30下载
- 积分：1
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Pattern-Recognition
清华模式识别张学工，第一次作业，基于身高体重数据进行性别分类(Pattern recognition, based on height and weight data for gender classification)
- 2013-10-21 21:36:35下载
- 积分：1
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IDW_matlab
反距离权重插值算法的matlab实现，简单易懂的算法(IDW interpolation algorithm matlab realize, straightforward algorithm)
- 2021-03-16 21:09:21下载
- 积分：1
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TwoR
this program shows the dynamical equation
- 2015-02-27 06:25:41下载
- 积分：1
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DCT_watermark
基于DCT数字水印算法，希望能有用，用信噪比，检验鲁棒性(Digital watermarking algorithm based on DCT)
- 2010-06-25 15:57:30下载
- 积分：1
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DSP_project
DTMF encoder/decoder using Goertzel algorithm and Biquad filtering
- 2010-11-10 20:20:01下载
- 积分：1
