Opencv: bug opencv3.3.1: cv::DataType<cv::Vec<uchar, 3>> has no member type

[yanchao12122]

when I write code as follows in vs2015

cv::Mat img(10, 10, cv::DataType>::type);

it has an error : cv::Mat img(10, 10, cv::DataType>::type); has no member type

[alalek]

OpenCV traits system is reworked to avoid several bugs: #9457 (related issue #7599)

cv::DataType>::type

Consider to use:

• CV_8UC3 directly if it is not part of code with templates
• cv::traits::Type< cv::Vec<uchar, 3> >::value (since OpenCV 3.3.1 only)
• or #define OPENCV_TRAITS_ENABLE_DEPRECATED before any OpenCV headers to allow old type traits (for example, in stdafx.h or via compiler defines in project properties).