网站首页

登录

DCT、DWT数字水印技术

于 2020-04-21 发布

 0  127

下载积分: 1 下载次数: 14

我要下载

代码说明：

说明：基于DCT和DWT的数字水印技术，可对图像进行DCT和DWT变换(Digital watermarking technology based on DCT and DWT can transform image into DCT and DWT)

文件列表：

DCT, 0 , 2019-01-17
DCT\b.jpg, 75334 , 2018-12-02
DCT\MAIN.m, 5103 , 2018-12-04
DCT\watermark.jpg, 2663 , 2018-12-03
DWT, 0 , 2019-01-17
DWT\a.jpg, 55518 , 2018-12-02
DWT\main1.m, 3417 , 2018-12-03
DWT\watermark.jpg, 2663 , 2018-12-03
盲水印嵌入提取, 0 , 2019-01-17
盲水印嵌入提取\blind_emb.m, 1172 , 2013-03-16
盲水印嵌入提取\blind_extraction.m, 626 , 2013-03-16
盲水印嵌入提取\CQ.m, 469 , 2013-03-16
盲水印嵌入提取\fil_code.m, 183 , 2013-03-16
盲水印嵌入提取\jpeg_extraction.m, 1300 , 2013-03-16
盲水印嵌入提取\lena.bmp, 66616 , 2007-07-04
盲水印嵌入提取\mark.bmp, 12342 , 2011-07-09
盲水印嵌入提取\mul_emb.m, 1027 , 2013-03-16
盲水印嵌入提取\mul_extration.m, 1294 , 2013-03-16
盲水印嵌入提取\PSNR.m, 453 , 2013-03-16

下载说明：请别用迅雷下载，失败请重下，重下不扣分！

发表评论

0 个回复

HESSIAN
黑塞矩阵（Hessian Matrix），又译作海森矩阵、海瑟矩阵、海塞矩阵等，是一个多元函数的二阶偏导数构成的方阵，描述了函数的局部曲率。黑塞矩阵最早于19世纪由德国数学家Ludwig Otto Hesse提出，并以其名字命名。黑塞矩阵常用于牛顿法解决优化问题，利用黑塞矩阵可判定多元函数的极值问题。在工程实际问题的优化设计中，所列的目标函数往往很复杂，为了使问题简化，常常将目标函数在某点邻域展开成泰勒多项式来逼近原函数，此时函数在某点泰勒展开式的矩阵形式中会涉及到黑塞矩阵。(Hessian Matrix, is a square matrix of the second order partial derivative of the multivariate function, which describes the local curvature of the function. The Hesse matrix was first proposed by the German mathematician Ludwig Otto Hesse in the 19th century and named after it. Hesse matrix is often used in Newton method to solve the optimization problem, using the black plug matrix to determine the extreme function of the extreme value problem.)

2017-09-12 13:58:39下载

积分：1
check_form
表單驗證調用為 onBlur=checkform(fname1,fname2,types,value1,value2) 輸入框的驗證 onSubmit subt(this.id) 表單提交時的驗證兩者需要一起使用 fname1=驗證的項目名 fname2=驗證的副項目名 types=驗證的方式 value1=驗證的值1 value2=驗證的值2 驗證的方式值:(多驗證方式用"|"分割例: 1|2|3) 0.該值不能為空! 1.您輸入太短了!不能小於value1字符 2.您輸入太多了!不能超過value2字符! 3.你的兩次密碼不一至,請驗證! 4.您的輸入與要求不相符,該輸入只能在value1~value2之間! 5.您輸入的E_mail不正確!請重新輸入! 6.只能為數字 */(calling for the certification form onBlur = checkform (fname1. fname2, types, value1, value2) input box test onSubmit subt (this.id) at the time of submission of the form Taken together need to verify the use of the test fname1 = fname2 = projects were validated by the deputy project were typ es = verifiable means value1 = the value of a certification value2 = 2 certification test the value of values : (multi-authentication "|" segmentation cases : 1 | 2 | 3) 0. The value can not be empty! 1. Your input is too short! value1 not less than two characters. You lose into too many! not more than value2 characters! 3. your password twice to different, Please validation! 4. Your input is not in line with requirements, The importation of only between value1- value2! 5. E_mail you enter )

2006-12-04 13:01:16下载

积分：1
归档
扫描文件夹，通过文件大小和创建时间判断图片文件是否重复，并分类和重命名(Scanning folders to determine whether image files are duplicated, categorized and renamed by file size and creation time)

2018-12-26 22:11:08下载

积分：1
efficient_subpixel_registration
说明：此算法可以实现任意两个图像的配准（整体平移） (This algorithm can achieve any two image registration (the overall translation))

2009-07-31 12:42:01下载

积分：1
SHAKE_PROOF
手持式摄像机在使用时常常会受到使用者有意无意抖动的影响,从而影响成像效果，造成录制视频的不稳定及跳动问题，尤其是在使用者在一场景中特写或者跟踪某一具体目标时，使用者通常不能准确定位到或者估计出运动目标的位置，从而造成目标在视频中位置的不稳定，造成视频的主观效果变得不理想。为了解决这一问题，我们需要设计一种算法来识别这种无意义的运动并设法通过补偿的方式来使得场景中的目标物体保持位置稳定的状态。手持式摄像机捕获的视频通常都会受到抖动的影响，这严重的影响视频的主观效果。这里提出的算法可以可靠的用于数字视频的去抖动。这个算法通过识别这些意外的抖动并且利用运动补偿的方法来获得一个较好的视频输出。这个系统可以分为三个模块：（1）运动估计模块；（2）抖动识别模块；（3）运动补偿模块。注：代码在matlab 7.7.0(R2008b)运行通过 [1] F Vella, A Castorina, M Mancuso. Digital image stabilization by adaptive block motion vectors filtering, IEEE Transactions on Consumer Electronics, 2002(Handheld cameras are often used by the user intentionally or unintentionally, the influence of jitter affect the imaging results, resulting in instability and beat the problem of recording video, and especially in the user in a scene close-up or tracking a specific target,users often can not accurately navigate to estimate the location of the moving target, resulting in the subjective effects of target location of the instability in the video, resulting in video not ideal. In order to solve this problem, we need to design an algorithm to identify such a meaningless exercise and try to make the object in the scene to keep the position stable state by way of compensation. The handheld camera captured video usually subject to the influence of jitter, the subjective effect of which seriously affect the video. The algorithm proposed here can be reliably used for digital video to jitter. This algorithm by identifying the jitter of these accidents and the use of motion compensation m)

2012-05-30 12:03:28下载

积分：1
yuhuiweixiang
迂回位相全息图matlab程序，经测试能正常运行，并且全息图效果良好(Detour phase hologram matlab procedures, have been tested to normal operation, and good hologram effect)

2008-07-07 11:17:29下载

积分：1
sift
说明： SIFT，即尺度不变特征变换（Scale-invariant feature transform，SIFT），是用于图像处理领域的一种描述。这种描述具有尺度不变性，可在图像中检测出关键点，是一种局部特征描述子。该方法于 1999 年由 David Lowe 首先发表于计算机视觉国际会议（International Conference on Computer Vision，ICCV），2004 年再次经 David Lowe 整理完善后发表于 International journal of computer vision（IJCV）。截止 2014 年 8 月，该论文单篇被引次数达 25000 余次。(来自百度)(SIFT, namely Scale-invariant feature transform (SIFT), is a description used in the field of image processing. This description has scale invariance and can detect key points in images. It is a local feature descriptor. This method was first published by David Lowe at the International Conference on Computer Vision (ICCV) in 1999 and published in the International Journal of Computer Vision (IJCV) in 2004 after it was sorted out and perfected by David Lowe again. As of August 2014, more than 25,000 citations have been cited. (From Baidu))

2019-07-08 09:34:31下载

积分：1
ICA
模式识别中运用ICA进行特征提取的matlab代码(Pattern Recognition in the use of ICA for feature extraction matlab code)

2009-03-06 17:08:25下载

积分：1
tu-xian-jiao-zhen
基于先验信息和射影几何变换的车牌图像矫正对于图像矫正还是有帮助的(License plate image correction based on a priori information and projective geometry transform for image correction or help)

2012-12-03 11:57:21下载

积分：1
EZW
此代码是小波零树算法的matlab实现程序，子程序较为齐全，包括最后计算压缩图像的峰值信噪比和压缩效果的源码。(This code is the wavelet zero-tree algorithm matlab implementation procedures, subroutines are more complete, including the final calculation of the peak signal to noise ratio and the compressed image compression source.)

2009-10-23 09:56:02下载

积分：1

696518资源总数
104349会员总数
32今日下载