“cvSnakeImage”: 找不到标识符 1>g:projectopencvhelloopencvhelloopencvhelloopencv.cpp(74) : error C2065: “CV_VALUE”: 未声明的标识符 1>g:projectopencvhelloopencvhelloopencvhelloopencv.cpp(74) : error C3861: “cvSnakeImage”: 找不到标识符 增加头文件 #include <opencv2/legacy/legacy.hpp>