opencv 用于从VideoCapture读取和返回帧的压缩表单

lnlaulya 于 2022-11-15 发布在其他

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I have for example this easy function, but i would like make it more compact, have you suggestion for me?

VideoCapture camera = VideoCapture(0);

cv::Mat& OpenCvCamera::getFrame()
{
    Mat frame;
    camera >> frame;
    return frame;
}

I'd like to make it inline without using temporary variable "frame".
Is it possible?

opencv

来源：https://stackoverflow.com/questions/74055345/compact-form-for-read-and-return-frame-from-videocapture

2条答案

按热度按时间

zour9fqk1#

看起来您想隐藏VideoCapture对象的存在。如果是这样，只需执行此操作即可。例如，只需 Package VideoCapture：：read（）。无需进行其他更改。

//This object is invisible from the function user.
VideoCapture camera = VideoCapture(0);

//Type of this function (argument and return) is same as VideoCapture::read().
bool OpenCvCamera::getFrame( cv::Mat &frame )
{   return camera.read( frame );    }

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y1aodyip2#

cv：：VideoCapture：：read可能是您正在寻找的内容。
允许您摆脱整个getFrame()函数：

VideoCapture camera = VideoCapture(0);
cv::Mat frame;
camera.read(frame);

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opencv 用于从VideoCapture读取和返回帧的压缩表单

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