SIFTVC6

目标物与摄像机距离已知的情况下，计算白天大气能见度距离。(The distance between the object and the camera is known to calculate the visibility distance in daytime.)

使用大津法选定二值化阈值，并对彩色图像做二值化处理(Otsu binarization threshold is selected, and the color images do binarization processing)

经典的文本水印算法，实现了别人实现不了的功能，希望大家有所用！(The classic text watermarking algorithm to achieve the functions of others fail to realize, I hope you all have a use!)

直方图拉伸是通过对比度拉伸对直方图进行调整，从而“扩大”前景和背景灰度的差别，以达到增强对比度的目的(Histogram stretching histogram is adjusted by contrast stretching, thereby " expand" the difference between the foreground and background of gray, in order to achieve the purpose of enhancing the contrast)

读取与显示JPG等格式图像文件，Visual C++编程技巧精选，很好的参考资料。(Read and display JPG format image files, Visual C++ programming skills selected, a good reference.)

一款完全免费的专业级屏幕捕捉软件，能够让您得心应手地捕捉到需要的屏幕截图。捕捉图像方式灵活，主要可以捕捉整个屏幕、活动窗口、选定区域、固定区域、选定控件、选定菜单、选定网页等，图像输出方式多样，主要包括文件、剪贴板、画图和打印机。软件具有捕捉光标、设置捕捉前延时、显示屏幕放大镜、自定义捕捉热键、图像文件自动按时间或模板命名、捕捉成功声音提示、重复最后捕捉、预览捕捉图片、图像打印、图像裁切、图像去色、图像反色、图像翻转、图像旋转、图像大小设置、常用图片编辑、墙纸设置等功能。捕捉到的图像能够以保存图像文件、复制到剪贴板、输出到画图、打印到打印机等多种方式输出。 (A completely free professional screen capture software that allows you to be able to adequately capture the need for a screenshot. A flexible way to capture the image, the main can capture the entire screen, active window, selected regions, fixed region, the selected control, the selected menu, select Web pages, images, various output methods, mainly including documents, clipboard, drawing and printers. Software has to capture the cursor, set the delay before the capture, display screen magnifier, custom capture hotkeys, image file names automatically by time or templates to capture the success of the voice prompts, repeat last capture, preview captured pictures, image print, image cut , the image to the color, the anti-color images, image flip, image rotation, image size setting, commonly used photo editing, wallpaper settings and other functions. Images can be captured to save the image file, copy to the clipboard, export to the drawing, print to a printer output of a variety of ways)

说明：  基于opencv平台编写的单目相机标定程序，使用的张正友的方法，只要准备十二张单目相机拍摄的棋盘格的图片就可以标定出单目相机的焦距等参数，建立单目相机坐标系。可以用于机器视觉测量中，也可以用于双面相机标定的前一步，精度很高。(Based on the monocular camera calibration program compiled by the OpenCV platform, the method of Zhang Zhengyou is used to calibrate the focal length and other parameters of the monocular camera and establish a monocular camera coordinate system as long as 12 pieces of chessboard pictures taken by the monocular camera are prepared. It can be used in machine vision measurement, and it can also be used in the previous step of the calibration of the double-sided camera, with high precision.)

计算机图形学图像处理学习内容，附带PPT教程里面的代码。(the ppt for Digital Image)

运用于人脸图像预处理中，主要实现功能有：人脸检测，人脸对齐，人脸图像放缩，人脸剪切。(Applied to the face image preprocessing, the main features are: face detection, face alignment, face image zoom, face cuts.)

关于CCD相机的选型，帧率，幅宽，曝光时间(CCD CAMERA)