LN_watermarking

光栅光谱仪利用光栅光谱仪检测不同种类镜片， 通过光栅光谱仪检测出对不同光线的透过率，从而确定其质量 (The quality of different types of lens detection using grating spectrometer, Through the grating spectrometer detected transmittance of different light, to determine its quality)

说明：  高光谱图像数据集，Pavia University scene该数据是高光谱图像处理中常用的数据之一，对高光谱图像算法性能的验证具有通用性(Hyperspectral image data set, Pavia University scene This data is one of the commonly used data in hyperspectral image processing, and it has universality to verify the performance of hyperspectral image algorithm)

FDK最小角度重建，基于parker加权的投影数据处理实现的最小角度重见(FDK minimum angle reconstruction, the minimum angle parker weighted projection data processing based on the realization Shigemi)

分块压缩感知中稀疏表示增加方向性提高重构质量(Block compression to increase directional to improve the reconstruction quality perception in sparse)

说明：  1. 掌握利用脉冲响应不变法设计IIR数字滤波器的原理和具体方法。 2. 加深理解数字滤波器与连续时间滤波器之间的技术指标转化。 3. 掌握脉冲响应不变法设计IIR数字滤波器的优缺点及使用范围(1. Master the principle and specific method of designing IIR digital filter with impulse response invariant method. 2. Deepen the understanding of the technical index transformation between digital filter and continuous time filter. 3. Master the advantages, disadvantages and application scope of the design of IIR digital filter by the pulse response invariant method)

实现了一个图像分块的DCT去噪算法，用于学习参考(We achieve an image block DCT denoising algorithm, for learning reference)

说明：  这篇论文提出了一种较好的水下图像增强的方法。首先使用经过端到端训练的卷积神经网络去测量输入图片，同时以自适应双边滤波器对传输图片进行处理。接着提出一种基于白平衡的策略来消除图片的颜色偏差，用拉普拉斯金字塔融合获得无雾和色彩校正图像的融合结果。 最后，输出图像被转换为混合小波和方向滤波器组（HWD）域，用于去噪和边缘增强。 实验结果表明，该方法可以消除颜色失真，提高水下图像的清晰度。(This paper proposes a better underwater image enhancement method. Firstly, an end-to-end training convolutional neural network is used to measure the input image, and an adaptive bilateral filter is used to process the transmitted image. Then a strategy based on white balance is proposed to eliminate the color deviation of images. The fusion results of fog-free and color correction images are obtained by Laplacian pyramid fusion. Finally, the output image is converted into hybrid wavelet and directional filter bank (HWD) domain for denoising and edge enhancement. The experimental results show that the method can eliminate color distortion and improve the clarity of underwater images.)

机载正侧视SAR雷达仿真和成像，使用matlab编写，直接运行可用(Simulation and imaging of airborne forward-looking SAR radar)

在数字图像处理中，灰度直方图是最简单且最有用的工具，可以说，对图像的分析与观察直到形成一个有效的处理方法，都离不开直方图。(in digital image processing, the histogram is the simplest and most useful tool, it can be said that the right image analysis and observation until the formation of an effective treatment method has been based on histogram.)

说明：  学习鬼成像原始程序。经验证可以跑通，欢迎交流。(Learn the original program of ghost imaging. After verification, it can run through. Welcome to communicate.)