Opencv出错

Question

我在make opencv中看到了这一点:我下载了opencv git的源代码。

[ 22%] Built target pch_Generate_opencv_highgui
[ 22%] Built target opencv_highgui
[ 22%] Built target opencv_videoio_pch_dephelp
[ 22%] Built target pch_Generate_opencv_videoio
[ 22%] Building CXX object modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_v4l.cpp.o
/home/fhwa/opencv/modules/videoio/src/cap_v4l.cpp: In function ‘bool mjpeg_to_rgb24(int, int, unsigned char*, int, unsigned char*)’:
/home/fhwa/opencv/modules/videoio/src/cap_v4l.cpp:1740:16: error: ‘imdecode’ is not a member of ‘cv’
   cv::Mat temp=cv::imdecode(cv::Mat(std::vector<uchar>(src, src + length)), 1);
                ^
make[2]: *** [modules/videoio/CMakeFiles/opencv_videoio.dir/src/cap_v4l.cpp.o] Error 1
make[1]: *** [modules/videoio/CMakeFiles/opencv_videoio.dir/all] Error 2
make: *** [all] Error 2

有什么暗示吗？我错过了一些包裹吗？

Answer 1

尝试一个稳定的版本

wget http://sourceforge.net/projects/opencvlibrary/files/opencv-unix/2.4.9/opencv-2.4.9.zip/download

没有尖端版本(从git)

Answer 2

您可以使用plhn解决方案，也可以在最新的稳定标记上执行git checkout：

$git tag -l #list all tags
$git checkout 2.4.9 #thats the latest stable version

这将签出与最新稳定包中相同的版本。但作为一种奖励，如果出现一些不清楚的异常，您可以查看源代码。