编译opencv4.6问题汇总，第三方软件包见我发的资源

win10系统 python3.8.2，cmake-3.15.5-win64-x64，opencv4.6

本文主要总结问题。赠人玫瑰手留余香。

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| 问题1 | Problem with installing OpenCV using Visual Studio and CMake (error code: MSB3073) |
| 解决方法 | Use below steps: 1. Navigate to your build folder 2. Right click on ALL-BUILD.vcxproj 3. Select properties 4. Select Security tab 5. Select Edit 6. Check Full Control Box 7. Open ALL-BUILD.vcxproj 8. Right click on INSTALL and select Rebuild Worked for me. |
| 问题2 | ## 关于Cmake编译后opencv中使用不了SIFT,SURF等 |
| | |
| | |
| | 之后在cmake中点击configure，注意这一步不要delete cache |
| 问题3 | CMake Warning (dev) at cmake/OpenCVUtils.cmake:144 (find_package): Policy CMP0148 is not set: The FindPythonInterp and FindPythonLibs modules are removed. Run "cmake --help-policy CMP0148" for policy details. Use |
| | 在CMakeList.txt 文件中增加一行： if(POLICY CMP0148) cmake_policy(SET CMP0148 OLD) endif() |
| 问题4 | Installing OpenCV 3.1.0 with CMake on Windows 7, opencv_ffmpeg.dll invalid hash |
| | 一种方法是在ffmpeg目录下方downloads文件，并放上响应的文件。但还是直接放到./cache/文件夹下面最方面如下： I found sub-string ffmpeg.dll in opencv\sources\3dparty\ffmpeg\ffmpeg.cmake: set(FFMPEG_BINARIES_COMMIT "8aeefc4efe3215de89d8c7e114ae6f7a6091b8eb") set(FFMPEG_FILE_HASH_BIN32 "89c783eee1c47bfc733f08334ec2e31c") set(FFMPEG_FILE_HASH_BIN64 "35fe6ccdda6d7a04e9056b0d73b98e76") set(FFMPEG_FILE_HASH_CMAKE "8606f947a780071f8fcce8cbf39ceef5") set(FFMPEG_DOWNLOAD_URL https://raw.githubusercontent.com/Itseez/opencv_3rdparty/${FFMPEG_BINARIES_COMMIT}/ffmpeg/)ocv_download(PACKAGE ...) Download files: https://raw.githubusercontent.com/Itseez/opencv_3rdparty/8aeefc4efe3215de89d8c7e114ae6f7a6091b8eb/ffmpeg/{opencv_ffmpeg.dll,opencv_ffmpeg_64.dll,ffmpeg_version.cmake} and copy it to: opencv\sources\3rdparty\ffmpeg\downloads\%HASH%\ Then cmake.exe -G "CodeBlocks - MinGW Makefiles" . and mingw32-make.exe |
| 问题5 | 'cmake' will raise "OpenCVGenSetupVars.cmake" error (when configure OpenCV) |
| | had the same problem. The compilation was still successful after ignoring this warning. So the second time I built it, I removed the configuration option(OPENCV_GENERATE_SETUPVARS). 也就是OPENCV_GENERATE_SETUPVARS后面的√取消掉 |
| 问题6 | Opencv_contrib编译 |
| | 在opencv在cmake软件中configure结束后添加opencv_contrib文件夹中的modules文件到变量中。需要使用SURF等库时在NONFREE后面打钩之后点击configure，注意这一步不要delete cache，直接继续configure |
| 问题7 | face_landmark_model.dat，ffmpeg，ippicv等安装 |
| | 下载完成之后，在\源码\.cache\文件夹下，找到源文件，复制下文件名（校验码+文件），把下载的文件拷贝过来，修改成\.cache\目录里的名称。如下然后重新在cmake里面configure就可以了 |
| 问题8 | 严重性代码说明项目文件行禁止显示状态错误 C2059 语法错误:")" opencv_test_objdetect D:\opencv\opencv\source\opencv-4.x\modules\objdetect\test\test_qrcode_encode.cpp 324 警告 C4819 该文件包含不能在当前代码页(936)中表示的字符。请将该文件保存为 Unicode 格式以防止数据丢失 opencv_test_objdetect D:\opencv\opencv\source\opencv-4.x\modules\objdetect\test\test_qrcode_encode.cpp 1 错误 C2059 语法错误:"for" opencv_test_objdetect D:\opencv\opencv\source\opencv-4.x\modules\objdetect\test\test_qrcode_encode.cpp 324 错误 C2143 语法错误: 缺少")"(在";"的前面) opencv_test_objdetect D:\opencv\opencv\source\opencv-4.x\modules\objdetect\test\test_qrcode_encode.cpp 324 错误 C2065 "i": 未声明的标识符 opencv_test_objdetect D:\opencv\opencv\source\opencv-4.x\modules\objdetect\test\test_qrcode_encode.cpp 324 错误 C2065 "i": 未声明的标识符 opencv_test_objdetect D:\opencv\opencv\source\opencv-4.x\modules\objdetect\test\test_qrcode_encode.cpp 324 错误 C2275 "std::string": 将此类型用作表达式非法 opencv_test_objdetect D:\opencv\opencv\source\opencv-4.x\modules\objdetect\test\test_qrcode_encode.cpp 326 错误 C2146 语法错误: 缺少")"(在标识符"input_info"的前面) opencv_test_objdetect D:\opencv\opencv\source\opencv-4.x\modules\objdetect\test\test_qrcode_encode.cpp 326 错误 C2065 "input_info": 未声明的标识符 opencv_test_objdetect D:\opencv\opencv\source\opencv-4.x\modules\objdetect\test\test_qrcode_encode.cpp 328 错误 C2065 "input_info": 未声明的标识符 opencv_test_objdetect D:\opencv\opencv\source\opencv-4.x\modules\objdetect\test\test_qrcode_encode.cpp 350 错误 C2737 "gtest_ar": 必须初始化 const 对象 opencv_test_objdetect D:\opencv\opencv\source\opencv-4.x\modules\objdetect\test\test_qrcode_encode.cpp 350 错误 C2059 语法错误:"}" opencv_test_objdetect D:\opencv\opencv\source\opencv-4.x\modules\objdetect\test\test_qrcode_encode.cpp 435 错误 C2143 语法错误: 缺少";"(在"}"的前面) opencv_test_objdetect D:\opencv\opencv\source\opencv-4.x\modules\objdetect\test\test_qrcode_encode.cpp 435 |
| | 更改文件编码格式保存在类别找到文件，在右边命令一栏找到"高级保存选项"，将文字编码改为936的简体中文 |
| | 移植问题 |
| | 如果你是在本机使用，那么现在你就可以直接去python里对应的虚拟环境中调用cv2了。如果是准备再另一个电脑上使用，看下文首先进入你最开始在cmake里设置的build路径然后找到lib-python3-release-然后这里有个pyd文件我们就要这个，拷出来然后我们找到install-x64-vc16-bin,里面有2个dll，拷出来将这3个文件都拷贝到py程序的根目录，你就可以使用opencv了，大小确实小了点哈（尴尬） ------------------------------------------------ 原文链接：https://blog.csdn.net/weixin_44287933/article/details/133032558 |