sauvola

lbg算法是一种经典的矢量量化算法，此源码为lbg算法的c语言实现。(lbg algorithm is a classic vector quantization algorithm, the algorithm lbg source for the C Language.)

说明：  培养学生综合利用Matlab解决专业问题的能力 GUI设计+图像处理 基于数字图像处理，设计实现一个自然场景下公路交通限速标志分割和识别的程序。要求系统具有界面，并实现以下功能： 1）读入自然场景下包含交通标志的图像； 2）对图像进行预处理； 3）限速交通标志的分割； 4）交通标志区域的定位。 5）对限速标志中的数字进行分离和识别。(MATLAB basic programming experiment 5)

基于DCT的数字水印算法 通过Arnold变换对水印进行置乱，增加了水印的鲁棒性，成功的实现了水印的嵌入和提取。(Arnold transform digital watermarking algorithm based on DCT watermark scrambling to increase the robustness of the watermark, the watermark embedding and extraction. )

自适应中值滤波器的代码，最大9窗口和3*3标准中值滤波窗口结果对比(The adaptive median filter code, up to nine 3* 3 window, and the result of comparison of the value of the standard filter window)

SSR单尺度图像增强 MSR多尺度Retinex图像增强模型(MSR Multiscale Retinex Image Enhancement Model)

说明：  Matlab边缘检测和区域生长图像分割算法代码，适合于图像边缘检测。(Matlab edge detection and region growing image segmentation algorithm code, suitable for edge detection.)

基于matlab的RANSAC算法，主要用来拟合二维直线，同时选出非直线的点用于后续曲线拟合。(The RANSAC algorithm based on MATLAB is used to fit two dimensional lines, and the point of non straight line is selected for the subsequent curve fitting.)

说明：  基于小波变换的图像融合，可实现两幅图像的融合，融合规则可自定义(Image fusion based on wavelet transform can realize the fusion of two images, and the fusion rules can be customized)

说明：  dctcom.m文件利用DCT变换完成对输入图像进行压缩；imagecbe.m完成对输入的两幅RGB图像用小波分析的方法进行图像融合 imagecom.m完成对输入的RGB图像用小波分析的方法进行自动降噪，得到高频系数阈值，降噪效果百分比和结果 wavelet1D.m完成对输入的一维信号进行多尺度离散小波分解 wavelet2D完成对输入的二维信号进行多尺度离散小波分解；zigzag.m完成对输入的8*8矩阵按照zigzag排列抽取数据.(document the use of DCT transform dctcom.m completion of the input image compression imagecbe.m completion of the two RGB input image with wavelet analysis method of image fusion imagecom.m completion of the input RGB image using wavelet analysis method automatically drop noise, the threshold of high-frequency coefficient, noise reduction effect and the results of the percentage of wavelet1D.m completion of the input signals of one-dimensional discrete wavelet multi-scale decomposition wavelet2D completion of the input signals of two-dimensional discrete wavelet multi-scale decomposition zigzag.m completed the input of 8* 8 matrix of data collected in accordance with the zigzag order.)

说明：  程序功能是把一副倾斜的文字图像矫正过来，通过边缘检测再进行霍夫变换完成(The program function is to correct a skewed text image.)