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我已经计算出图像中区域的平均偏差值和标准偏差值。 代码:无法访问平均值
Mat img=imread("a.jpg");
Mat hsv1;
Mat mean, stdev;
cvtColor(img, hsv1, CV_BGR2HSV);
cv::meanStdDev(hsv1, mean, stdev, superpixel_mask);
cout << "mean: " << mean << endl << "standard deviation: " << stdev << endl;
输出是:
mean: [150.8399251737039;
103.6980224478888;
226.161411010155]
standard deviation: [23.98981564590477;
46.73491195049309;
34.41166394765997]
我想访问这些数字。 我写的代码:
float Mi = mean.at<float>(0,0);
cout << Mi << endl;
它给出了错误:
OpenCV Error: Assertion failed (dims <= 2 && data && (unsigned)i0 < (unsigned)si
ze.p[0] && (unsigned)(i1*DataType<_Tp>::channels) < (unsigned)(size.p[1]*channel
s()) && ((((sizeof(size_t)<<28)|0x8442211) >> ((DataType<_Tp>::depth) & ((1 << 3
) - 1))*4) & 15) == elemSize1()) in cv::Mat::at, file C:\OpenCV249\opencv\build\
include\opencv2/core/mat.hpp, line 537
谷歌是您的朋友:http://answers.opencv.org/question/6501/problem -with-meanstddev/ – user463035818
你为什么认为他们被称为平均值......大公司。 – ThePerson
'C:\ OpenCV249 \ opencv \ build \ include \ opencv2/core/mat.hpp,第537行'恕我直言,你必须使用最新版本。我确定你的代码使用OpenCV 3.0 – sturkmen