【opencv基础】代码优化加速相关

1. 浮点数据定点化；

cv::Mat tmp1 = values * 1000000;
tmp1.convertTo(tmp1, CV_32SC1);
cv::Mat tmp2 = this->weights * 1000000;
tmp2.convertTo(tmp2, CV_32SC1);
cv::Mat tmp(tmp1.rows, tmp2.cols, CV_64FC1);
tmp = tmp1 * tmp2 / 1000000000000.0f;
tmp.convertTo(tmp, CV_32FC1);

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