-
Jsteg
Jsteg算法实现,Jsteg是一种基于JPEG的常用信息隐藏算法步骤如下:
首先,把掩体图像分为不重叠的8*8的子块,对每一子块进行DCT并对变换得到的DCT系数进行量化 其次,将待隐藏的信息进行加密,将加密结果嵌入到量化后值不为0,1或-1的DCT系数的最
低有效位(LSB)中,其嵌入顺序是按zigzag扫描顺序进行的。最后,用JPEG的嫡编码(包括哈夫曼编码,游程编码及DPCM)对嵌入秘密信息后的每一子块进行编码,从而得到一个含有秘密信息的JPEG stego文件。(Jsteg Algorithm)
- 2016-03-30 21:45:43下载
- 积分:1
-
Single-slit-diffraction
模拟单缝衍射实验,可任意给定单缝的长和宽,得出单缝衍射模拟图像、光量等高线分布图、单缝衍射3D模拟图;另外附带一个关闭全屏的小程序。(Simulation of single-slit diffraction experiment, sewn to order any length and width, draw single-slit diffraction analog image, the amount of light contour maps, 3D modeling diagram single slit diffraction addition Close Full Screen comes with a small program.)
- 2012-08-22 16:11:39下载
- 积分:1
-
chaincode
Freeman链码(8方向)代码,进行图像边缘的描述,可用于基于内容的图像检索系统(Freeman chain code (8 directions) code)
- 2011-11-01 18:47:29下载
- 积分:1
-
matlab-code-based-image-retrieval
基于图像检索的matlab代码,基于内容的图像检索中的一些关键环节:特征提取:颜色直方图;纹理特征等 相似度:马氏距离,欧氏距离等 相关反馈:机器学习方法,如SVM,神经网络等 检索与分类:两个很相似的样本距离很小,虽然两个不相似的样本距离未必很大(content-based image retrieval of some of the key issues : Feature Extraction : color histogram Texture characteristics of similarity : Mahalanobis distance, the Euclidean distance relevance feedback : machine learning methods, such as SVM. Neural network search and classification : two very similar samples from the small, although the two are similar to the samples may not be much distance)
- 2013-01-09 10:19:22下载
- 积分:1
-
SVM
说明: 基于opencv的支持向量基(SVM)的代码,利用SVM解决2维空间向量的3级分类问题。(Opencv-based support vector machine (SVM) of the code, the use of SVM to solve 2-dimensional vector space of three classifications.)
- 2009-08-03 11:28:59下载
- 积分:1
-
fouier
使用傅立叶变换对图像的条纹噪声进行滤除,分别使用了理想低通滤波、巴特沃兹低通滤波和高斯低通滤波进行处理(The use of Fourier transform on the image to filter out the noise of the stripes, respectively, using an ideal low-pass filtering,巴特沃兹Gaussian low-pass filtering and low pass filter to deal with)
- 2008-05-20 22:18:12下载
- 积分:1
-
VisualCDigitalImageProcessing
这本是用VC++来实现图像处理的书藉,对于学习图像处理的来说是非常有用的.(This is VC++ to realize image processing books, for learning image processing is very useful.)
- 2009-04-18 10:44:05下载
- 积分:1
-
BP
说明: 利用BP算法进行SAR成像,BP算法是一种对时域回波数据进行成像的算法(BP algorithm was used for SAR imaging)
- 2019-04-29 14:05:06下载
- 积分:1
-
computer_vision_calibr
说明: 计算机视觉,CCD相机标定程序,很好用!(Computer vision, CCD camera calibration procedures, very good use!)
- 2008-12-07 16:07:04下载
- 积分:1
-
pingjiahanshu
在matlab环境下,包括图像评价函数算法:Brenner、方差、梯度阈值、熵函数、能量梯度函数。(in Matlab environment, including image evaluation function algorithm : Brenner, variance, gradient threshold, entropy function, energy gradient function.)
- 2021-05-12 17:30:03下载
- 积分:1