使用 OpenCV 将图像旋转 90 度的最简单方法?
将 IplImage/cv::Mat 旋转 90 度的最佳方法是什么(在 c/c++ 中)?我认为一定有比使用矩阵转换它更好的东西，但我似乎在 API 和在线中找不到其他任何东西.
What is the best way (in c/c++) to rotate an IplImage/cv::Mat by 90 degrees? I would assume that there must be something better than transforming it using a matrix, but I can't seem to find anything other than that in the API and online.
推荐答案
从 OpenCV3.2 开始，生活变得更简单了，您现在可以在一行代码中旋转图像:
As of OpenCV3.2, life just got a bit easier, you can now rotate an image in a single line of code:
cv::rotate(image, image, cv::ROTATE_90_CLOCKWISE);
对于方向，您可以选择以下任何一项:
For the direction you can choose any of the following:
ROTATE_90_CLOCKWISE
ROTATE_180
ROTATE_90_COUNTERCLOCKWISE
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