cv :: Mat :: t()和cv :: transpose()之间的区别

问题描述

这两个转置之间的opencv有什么区别?

What is the difference in opencv between these two transposes?

使用 cv :: Mat :: t() :

Using cv::Mat::t():

cv::Mat a;
a = a.t();

使用 cv :: transpose():

Using cv::transpose():

cv::Mat a;
cv::transpose(a,a);

我对效率特别感兴趣.

推荐答案

没有区别.这是opencv/modules/core/src/matop.cpp中cv::Mat::t()的代码:

There's no difference. Here's the code for cv::Mat::t() from opencv/modules/core/src/matop.cpp:

MatExpr MatExpr::t() const
{
    MatExpr e;
    op->transpose(*this, e);
    return e;
}

所以cv::Mat::t()只是调用cv::transpose().

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