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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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POS-PID
运用粒子群优化算法对PID控制器进行优化设计，通过matlab实现(The use of particle swarm optimization algorithm to optimize the design of PID controller, through matlab to achieve)
- 2011-11-23 10:11:38下载
- 积分：1
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Hyperspectral-image_RX-detection
关于高光谱图像的图像处理技术，RX异常检测技术，代码功能强大，且代码注释很多，对学习很有帮助。(Hyperspectral image on image processing techniques, RX Anomaly Detection technology, powerful code feature, and many code comments, learning helpful.)
- 2021-04-22 09:38:48下载
- 积分：1
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selfdevelopment
利用自适应算法matlab程序来处理图像，弥补了直方图均衡化的缺点(Adaptive algorithm matlab program to process images, to make up for the shortcomings of the histogram equalization)
- 2012-05-21 12:28:21下载
- 积分：1
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LFMCW
不同信噪比下周期FRFT和FRFT两种方法对LFMCW信号的检测能力对比(FRFT different SNR period and the comparison of the two methods FRFT LFMCW signal detection capability)
- 2015-09-07 19:19:53下载
- 积分：1
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DigitalImageProccessexperiment
Matlab环境下的几个数字图像处理实验，包含图像灰度变换、直方图均衡化、直方图匹配、邻域平均、局域增强、中值滤波、图像的锐化等(Several digital image processing experiments, including gray transform, histogram equalization, histogram matching, neighborhood average, local increase, median filtering and image sharpening, etc.)
- 2021-02-01 10:10:02下载
- 积分：1
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PSNR
完成对彩色图像的灰阶变化和噪声滤除处理，并通过数学计算完成对ISNR的求解。(Complete color image gray-scale changes and filter out noise, and completed ISNR solving through mathematical calculations.)
- 2013-04-18 11:22:23下载
- 积分：1
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LBP
提取图像的lbp纹理特征，然后进行向量表示(
Lbp extracted texture features of the image, and then vector representation)
- 2015-11-09 20:22:55下载
- 积分：1
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my_3_STEP_search
说明： 标准三步搜索法，用matlab实现，经过实验效果还可以(Standard three-step search method, using matlab to achieve, after the experimental effect can also be)
- 2008-11-14 10:30:09下载
- 积分：1
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head-3d-restruction
利用matlab对头颅图像进行三维重建的实用算法(Practical three-dimensional image reconstruction algorithm using matlab)
- 2013-05-21 10:38:27下载
- 积分：1
