改变图像对比度和亮度.docx

西安工业大学OpenCV实验报告 学 号： 101001116 姓 名： 王兵 指导老师：刘 建 伟 完成时间：2013/9/11 改变图像的对比度和亮度实验目标 ：? 访问像素值?用0初始化矩阵?学习 saturate cast实验原理 ：对图片中每个像素点的值进行变换，其变换公式为：　　g(i,j) = contrast*f(i,j)+brightness.　　其中g(i,j)为变换后第i行第j列像素点值，f(i,j)为变换前对应点的值。实验环境：Opencv:2.3.1版本 Microsoft Visual Studio 2008（简称：vs2008）OS：WinXP位系统。实验步骤：新建工程，命名为：addTwoImages.编写代码（参考附录中的源代码）选择Solution Explorer 里的opencvhello项目，点击鼠标右键，选Properties ：在[链接器 LINKER]的[输入 INPUT]中,为项目的Debug 配置增加 [ 附加依赖项 Additional Dependencies]： opencv_calib3d231d.lib opencv_contrib231d.lib opencv_core231d.lib opencv_features2d231d.lib opencv_flann231d.lib opencv_gpu231d.lib opencv_highgui231d.lib; opencv_imgproc231d.lib opencv_legacy231d.libopencv_ml231d.lib opencv_objdetect231d.lib opencv_ts231d.lib opencv_video231d.lib 单击，右键项目名称：按Rebuild。如果在控制台出现如下代码则程序正确，通过调试。1------ Rebuild All started: Project: twoImages, Configuration: Debug Win32 ------1Deleting intermediate and output files for project twoImages, configuration Debug|Win321Compiling...1stdafx.cpp1Compiling...1twoImages.cpp1d:\opcv\opencv\build\my\install\include\opencv2\flann\logger.h(66) : warning C4996: fopen: This function or variable may be unsafe. Consider using fopen_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.1 d:\vs2008\vc\include\stdio.h(237) : see declaration of fopen1d:\opcv\opencv\build\my\install\include\opencv2\flann\flann.hpp(233) : warning C4996: cv::flann::Index_T: was declared deprecated1 d:\opcv\opencv\build\my\install\include\opencv2\flann\flann.hpp(278) : see reference to class template instantiation cv::flann::Index_T being compiled1Compiling manifest to resources...1Microsoft (R) Windows (R) Resource Compiler Version 6.0.5724.01Copyright (C) Microsoft Corporation. All rights reserved.1Linking...1LINK : D:\vsproject\twoImages\Debug\twoImages.exe not found or not built by the last incremental link; performing full