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a-watermarking-based-on-dwt
这是个由matlab仿真实现的基于dwt的数字水印技术算法，实现了数字水印的嵌入、提取和一系列攻击实验。效果良好。(This is implemented by the matlab simulation of digital watermarking technique based on dwt algorithm, realization of the digital watermark embedding, extraction and a series of attacks on experiments. Good effect.)
- 2011-05-19 09:20:49下载
- 积分：1
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数字内容安全LSB替换算法MATLAB实现
matlab实现lsb替换算法，包括水印嵌入、提取及PSNR计算评估。(Matlab implements LSB replacement algorithm, including watermark embedding, extraction and PSNR computation and evaluation.)
- 2018-10-31 11:03:06下载
- 积分：1
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WPSNR
计算信噪比的测试程序代码，利用对比敏感度函数（CSF）测量失真图像的空间频率。(Calculation of the test code SNR, the contrast sensitivity function (CSF) measurement of the spatial frequency of image distortion.)
- 2017-09-04 11:12:15下载
- 积分：1
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TPS-RPM
非刚性强壮点匹配图像配准。用于医学图像配准。thin plate splines robust point matching.(nonrigid strong point matching image registration. For the medical image registration. Thin plate spline robust point matching.)
- 2007-02-20 05:33:03下载
- 积分：1
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MyDrawType
适合初学图形学的人,都是基本的绘图与填充及图形变换,贝页丝曲线的绘制.(graphics suitable for beginners who are basic drawing and filling and graphic transformation, Pui-page wire drawing curves.)
- 2006-11-05 12:26:15下载
- 积分：1
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代码
说明： 1、正弦函数 f (t) = K sin(wt +a)
2、矩形脉冲函数 f (t) = u(t) - u(t - t0 )
3、抽样函数
4、单边指数函数 f (t) = Ke -t
5、已知信号 f1(t) = u(t + 2) - u(t - 2)， f 2 (t) = cos(2pt) ，用 MATLAB 绘制
f1(t) + f 2 (t) 和 f1(t)′ f 2 (t)的波形。(such as :
Sine function f (t) = K sin(wt +a)
Rectangular pulse function f (t) = u(t)-u(t-t0)
Sampling function
One-sided exponential function f (t) = Ke -t
Known signal f1(t) = u(t + 2)-u(t-2), f 2 (t) = cos(2pt), draw with MATLAB
The waveforms of f1(t) + f 2 (t) and f1(t)*f 2 (t))
- 2021-03-19 10:39:19下载
- 积分：1
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edgelist
改进的有效边表算法，来自计算机图形学的简单代码(Improved active edge table algorithm, a simple code from the computer graphics)
- 2020-06-30 20:40:01下载
- 积分：1
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code
提取视频中的图片，每一帧的信息，把视频分为图片信息(get picture of video)
- 2019-03-21 11:56:17下载
- 积分：1
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PCA
主成分分析 （ Principal Component Analysis ， PCA ）或者主元分析。是一种掌握事物主要矛盾的统计分析方法，它可以从多元事物中解析出主要影响因素，揭示事物的本质，简化复杂的问题。计算主成分的目的是将高维数据投影到较低维空间。给定 n 个变量的 m 个观察值，形成一个 n ′ m 的数据矩阵， n 通常比较大。对于一个由多个变量描述的复杂事物，人们难以认识，那么是否可以抓住事物主要方面进行重点分析呢？如果事物的主要方面刚好体现在几个主要变量上，我们只需要将这几个变量分离出来，进行详细分析。但是，在一般情况下，并不能直接找出这样的关键变量。这时我们可以用原有变量的线性组合来表示事物的主要方面， PCA 就是这样一种分析方法。(Principal component analysis (Principal Component Analysis, PCA) or PCA. Is a statistical method to grasp the principal contradiction of things, it can be resolved diverse things out the main factors, revealing the essence of things, simplifying complex problems. The purpose of calculating the main component of high-dimensional data is projected to a lower dimensional space. Given n variables of m observations, forming an n ' m of the data matrix, n is usually large. For a complex matters described by several variables, it is difficult to know, so if you can grab something to focus on key aspects of analysis? If the main aspects of things just reflected on several key variables, we only need to separate out these few variables, for detailed analysis. However, in general, does not directly identify this critical variables. Then we can represent the major aspects of things with a linear combination of the original variables, PCA is one such analysis.)
- 2021-01-28 21:48:40下载
- 积分：1
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GenerateOneDimensionalGrating
使用Matlab生成一维光栅条纹，可用于结构光三维重建。(Matlab Generate One Dimensional Grating)
- 2018-08-06 17:57:35下载
- 积分：1
