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watermark.m
%基于DCT的水印算法
%数字水印处理系统主要由水印嵌入和水印检测两个过程。
%水印嵌入过程为:数字水印(X)、原图像(I)和密钥/公钥(K)通过数字水印嵌入算法形成嵌入水印后的图像(I*)。
%水印检测过程为:数字水印(X)、水印图像(I*)和密钥/公钥(K)通过数字水印检测算法检测出数字水印或有无水印。
%基于DCT变换的水印算法:将一个随机序列作为水印信号嵌入到图像DCT变换重要分量的幅度成分中(幅值较大的n个系数作为重要分量)。
%定义一个相似函数来检验水印提取是否成功。试验结果表明,该算法具有不可见性,对通常的图像处理,如剪切、缩放、中值滤波、压缩等
%以及噪声干扰都具有一定的鲁棒性。(err)
- 2021-01-05 20:18:55下载
- 积分:1
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匹配滤波器图像识别
说明: 利用匹配滤波器实现图形识别,包括程序和说明文档(Graphic Recognition Using Matched Filter)
- 2021-01-17 08:48:45下载
- 积分:1
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person1_256
超分辨率复原(分块处理)
将样本库中的高分辨率图象和低分辨率图象分别做分块处理,当新输入一幅低分辨率图象时,分成小块到样本库中寻找最匹配的高分辨率块,然后复原出高分辨率图象。(Superresolution recovery (block processing) for a sample of high-resolution images and low-resolution images respectively block , when the new importation of a low-resolution image, divided into small samples to find the most matching high-resolution block, then recovery from high-resolution images.)
- 2007-05-15 09:30:44下载
- 积分:1
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HMRF_EM_image
这是一个经典的马尔科夫场程序。算法详细,而且里面含有一篇与程序对应的文献,解释非常详细,程序非常好用(This is a classical Markov field program. Algorithm is detailed, but it contains a corresponding literature and procedures, explaining in great detail, the program is very easy to use)
- 2021-03-02 23:29:33下载
- 积分:1
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Bow-image-retrieval-master
说明: 基于BoVW的图像特征提取,以及图像检索(Image feature extraction and image retrieval based on BoVW)
- 2020-06-23 04:40:02下载
- 积分:1
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untitledshiyan
Z源逆变器开路三相SVPWM调制,注入了三次谐波分量。(Open-circuit Three-phase SVPWM Modulation of Z-source Inverter)
- 2020-10-07 10:37:37下载
- 积分:1
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Transfortion
计算机图形学中实现多边形平移,旋转,缩放变换。(Polygons in computer graphics to achieve translation, rotation, scaling transformation.)
- 2020-11-11 20:29:44下载
- 积分:1
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CT-tracking
一种简单高效地基于压缩感知的跟踪算法。首先利用符合压缩感知RIP条件的随机感知矩对多尺度图像特征进行降维,然后在降维后的特征上采用简单的朴素贝叶斯分类器进行分类。该跟踪算法非常简单,但是实验结果很鲁棒,速度大概能到达40帧/秒(A simple and efficient tracking algorithm based on compressed sensing. Firstly, with the random sensing matrix compressed sensing RIP conditions for multi-scale image feature dimension reduction, and then use the naive Bias classifier simple classification in the feature reduction after the. The tracking algorithm is very simple, but the results are robust, speed can reach 40 frames per second)
- 2014-01-10 11:45:54下载
- 积分:1
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face-detect-system
一个不错的人脸检测演示系统里面有人脸检测的实际照片包+(face detect system)
- 2013-11-11 18:15:48下载
- 积分:1
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SegmentationforImagesofVCH-F1BasednmprovedWatersed
针对分水岭算法存在的过分割问题以及VCH-F1切片图像的特点,提出一种能够有效消除局部极小值和噪声干扰的自动分割方法。首先比较彩色分量梯度图,选择分量图像的梯度信息,达到有效提取图像边缘信息的目的;然后提出基于多阈值分割的方法消除无效梯度信息;最后介绍了算法的步骤及结果。实验结果证明,通过该方法处理的梯度图像再进行分水岭算法处理,即使不进行区域合并也能达到很好的效果。(Watershed algorithm for over-segmentation problem of the existence of VCH-F1 as well as the characteristics of the image slice, a can effectively eliminate the local minimum value and noise automatic segmentation method. Comparing the first color component gradient map, select the quantity of image gradient information, achieve an effective extraction of image edge information purposes then made based on multi-threshold segmentation method to eliminate invalid gradient information Finally introduce the steps of the algorithm and results. Experimental results show that the adoption of the method of treatment of gradient watershed algorithm for image re-treatment, even if there is no regional merger will also achieve good results.)
- 2008-03-28 16:14:01下载
- 积分:1