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wtmk
说明： 通过生成秘钥得到一串具有一定长度的扩频码，将原始消息序列以扩频码的长度过采样产生过采样消息序列，并将扩频码以原始消息序列的长度多次重复成伪随机序列，再令过采样消息序列与伪随机序列异或就可以生成扩频消息序列。在频率域下，将扩频消息序列以一定的嵌入强度自适应地嵌入原始图像，得到的图像具有较强的鲁棒性，比起直接嵌入，扩频水印在受到攻击后恢复出的水印信息误码率要低得多。并且扩频码长度越长，容错率就越高，鲁棒性就越好。(A sequence of spread spectrum codes with a certain length is obtained by generating a secret key. The oversampling message sequence is generated by oversampling the original message sequence with the length of the spread spectrum code, and the spread spectrum code is repeated into a pseudo-random sequence with the length of the original message sequence for many times, and then the spread spectrum message sequence can be generated by making the difference between the oversampling message sequence and the pseudo-random sequence. In the frequency domain, the spread spectrum message sequence is adaptively embedded into the original image with a certain embedding strength, and the resulting image has strong robustness. Compared with direct embedding, the error rate of the watermark information recovered from the attack of spread spectrum watermark is much lower. And the longer the spreading code length, the higher the fault tolerance rate and the better the robustness.)
- 2020-09-03 17:58:08下载
- 积分：1
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SSIM
图像质量评价的一个重要的指标：平均结构相似度（MSSIM），比PSNR有更好的性能，并且计算简单。(Image quality assessment is an important indicator: Average structural similarity (MSSIM), better than the PSNR performance, and easy to compute.)
- 2011-10-18 17:05:45下载
- 积分：1
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SIFT
说明： 用于特征提取，比较传统的一个方法，应用范围广，适合初学者(For feature extraction)
- 2020-12-17 09:52:41下载
- 积分：1
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Particle-filter-algorithm
课题是用粒子滤波进行目标跟踪，对经典粒子滤波与其它粒子滤波进行了详细的讲解.(For target tracking particle filter algorithm)
- 2016-04-18 15:46:37下载
- 积分：1
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QR
说明： 实现手机拍摄图像的二维码图像的提取，包括QR码的旋转与校正，也可以用于其他条码，但是效果不是很好(The realization of mobile dimensional code image captured image extraction, rotation and including a QR code correction can also be used for other bar code, but the effect is not very good)
- 2013-10-17 16:13:35下载
- 积分：1
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gmodify
图像畸变校正技术的matlab源代码，涉及到图像的空间变换和灰度插值等技术。(Matlab source code of the image distortion correction technology related to space transformation and grayscale image interpolation technology.)
- 2012-05-27 00:56:18下载
- 积分：1
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seed
这是一个简单的区域生长算法，方便新手学习使用。(this is a simple region growing algorithm available for new learners.)
- 2015-06-15 22:48:46下载
- 积分：1
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C#连接电脑摄像头 实例源码
C#连接摄像头，可以干好多事情了，自己扩展，这个只是个demo
- 2016-12-14下载
- 积分：1
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shuzishuiyinzongshu
：数字水印将感觉不到的信号嵌入到声频、视频和图像中以实现不同的目的。例如: 添加标题和版权保护。首先介绍
了有关数字水印的基本原理、重要属性及其主体框架。然后,将数字水印按不同角度划分为不同种类。讨论了各种各样的数
字水印算法以及数字水印在不同领域的应用,并简要介绍了对数字水印的攻击。最后,给出了数字水印当前的研究现状和发
展形式及前景。(: Digital watermark embedding imperceptible signals to the audio, video and images to achieve different purposes. Example: Add a title and copyright protection. Firstly, the basic principle about digital watermarking, and the main framework of the important attributes. Then, the digital watermark according to different angles into different types. Discussed a wide range of digital watermarking algorithms and digital watermarking applications in different fields, and a brief introduction of the digital watermarking attacks. Finally, the digital watermark of the current situation and development in the form of research and prospects.)
- 2015-03-18 16:12:36下载
- 积分：1
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VC++_image_Code
说明： VC++6.0图像处理算法集:图象的几何变换、平滑(去噪声)、锐化、腐蚀、膨胀、细化算法、半影调、抖动、直方图修正、彩色变换、腐蚀，膨胀，细化等算法，并有可执行文件供试用，并附有配套电子收，是图像处理入门的好资料。(VC++ 6.0 image processing algorithms: image geometric transformation, smoothing (to noise), sharpening, corrosion, expansion, thinning algorithm, penumbral tune jitter histogram of the amendment, color conversion, corrosion, swelling, refinement algorithm, etc., as well as executable files for trial, together with supporting electronic collection, image processing is a good data entry.)
- 2008-11-20 23:20:31下载
- 积分：1
