batterworth-high-low

该源码可以实现对彩色或灰度图像的曲波（Curvelet）特征的提取，以便后续做纹理图像分割。(The source can be achieved in color or grayscale images Qu Bo (Curvelet) feature extraction in order to do follow-up texture image segmentation.)

主要功能库存管理系统主要由1 货物管理2 基本档案3 查询统计4 系统维护5 帮助等模块组成进入该系统后，用户可以对系统中的一些基本信息进行添加、修改和删除等操作。另外，如果是管理员登录，还可以对用户的权限、用户名和密码进行修改。

暗通道去雾算法，可将风景图片实现去污效果。不会影响其原有的分辨率。效果比传统的均衡化好。(Dark channel dehazing algorithm, can achieve the decontamination effect picture. Will not affect its original resolution. Results than traditional good equalization.)

说明：  ICA人脸识别算法实例matlab源码，已测试过，程序能运行，且识别率较高(ICA face recognition algorithm matlab source code examples have been tested, the program will be able to run, and a higher recognition rate)

香港浸会大学吴国宝的快速TV（total variation）的处理程序，可以运行，结果良好。(David Ng Hong Kong Baptist University Fast TV (total variation) of the process, you can run with good results.)

首先通过多分辨率分解法提取高频边缘，然后分别对每层的高频边缘进行非线性插值得到新的高频边缘，接着对高频边缘进行高通滤波得到等强后的高频边缘，最后对增强后的高频边缘进行修正。再在对增强的图像进行对比度拉伸，从而达到增强的目的！(First of all, through the extraction of multi-resolution decomposition of high-frequency edge, and then were on the edge of each high-frequency non-linear interpolation to be the new high-frequency edge, and then the edge of the high-frequency high-pass filter to be strong, such as after the high-frequency edge, and finally on the brink of enhanced high-frequency be amended. Again in contrast enhanced image stretching, so as to achieve the purpose of enhancing!)

本文主要研究基于水平集方法的活动轮廓模型图像分割，在回顾活动轮廓模 型发展的基础上，介绍了曲线演化理论及其水平集方法，证明了水平集方法可以 有稳定的数值实现方式且其处理拓扑变化的自然性，进一步引出了变分水平集方 法。 本文介绍了两种不同的几何活动轮廓模型：基于梯度信息的李纯明模型以及 基于区域信息的 Chan-Vese 模型（C-V 模型）。在分析上述两模型的优缺点上，提 出了一种改进的 C-V 模型，改进模型引入了距离约束项，同时对基于区域的外部 能量项进行了改进，使得水平集函数重新初始化寓于模型的演化之中，分割结果 对参数的依赖性减小。 (This paper mainly study image segmentation of active contour model based on level set. After reviewing the development of the active contour model, curve evolution and level set method are presented, then we proved that the level set method has a stable numerical realization and can describe the topology change of the contour naturally, in addition we introduce level set of variational method. We introduce two different GAC models in this paper: Li Chunming model which is based on gradient information and Chan-Vese model （C-V model） which is based on region information. Based on the drawbacks and advantages of these two models, we improve the C-V model by adding penalizing energy term of signed distance function, at the same time, mending the external energy term which based on region information, then the re-initialization of the level set can accomplish in the model evolution, and the degree of the segmentation result depend on the parameters decline. )

数字图像处理，DFT，IDFT，DCT，IDCT，求频谱(Digital image processing, DFT, IDFT, DCT, IDCT, spectrum)

菲涅尔衍射程序，能够获得所需图像的菲涅尔衍射图样。(Fresnel diffraction procedure, the desired image can be obtained of the Fresnel diffraction pattern. )

对Lena图先进行jpeg压缩，再对压缩后的图像分别进行小波软阈值去噪和非抽样硬阈值去噪，比较两种去噪方案，非抽样硬阈值有更好的效果。这是根据一篇外文文献来进行编程的，最后有图像对比结果。(According to the paper of OPTIMAL WAVELET THRESHOLDING FOR VARIOUS CODING SCHEMES ,I firstly compresse the Lena picture using the jpeg method ,then respectivly denoise it using the wavelet soft-thresholding method and the undecimated DWT hard-thresholding method.Comparing the two method ,we can find the undecimated DWT hard-thresholding have a better result.)