c++ - vector 构造函数和垫

Question

如何在 OpenCV 中将 3 元素 vector 构造函数乘以 Mat？我尝试了以下但它抛出错误:

cv::multiply(src, cv::Vec<_Tp, 3>(2.0, 1.0, 1.0), src);

它给出了以下错误:

OpenCV Error: Assertion failed (src2.type() == CV_64F && (src2.rows == 4 || src2.rows == 1)) in arithm_op, file /Users/abhishek/Documents/OpenCV-2.4.3/modules/core/src/arithm.cpp, line 1275
libc++abi.dylib: terminate called throwing an exception

Answer 1

你试过吗:

cv::multiply(src, cv::Scalar(2.0, 1.0, 1.0), src);