我找到了pinv() example并成功运行。
但是我的版本失败了:
Mat1b B = Mat(400, 10, CV_32FC1);
for (r = 0; r < 20; r++)
{
for (c = 0; c < 20; c++)
{
B(n,0) = 1;
B(n,1) = r;
B(n,2) = c;
B(n,3) = r*r;
B(n,4) = c*r;
B(n,5) = c*c;
B(n,6) = r*r*r;
B(n,7) = c*r*r;
B(n,8) = c*c*r;
B(n,9) = c*c*c;
n = n + 1;
}
}
Mat1b Bpinv = Mat(10, 400, CV_32FC1);
invert(B, Bpinv, DECOMP_SVD);
invert
中的错误是:
这样的错误信息:OpenCV错误:断言失败(在= cv :: invert中键入== CV_32F || type == CV_64F)。
看起来CV_32F
和CV_64F
之间发生了一些冲突,但我根本没有使用CV_64F
格式。怎么会发生这种情况?
答案 0 :(得分:1)
您使用的是Mat1b
(即Mat_<uchar>
类型CV_8UC1
},但它应为Mat1f
(即Mat_<float>
类型CV_32FC1
)或Mat1d
(即Mat_<double>
类型CV_64FC1
)
您可以看到CV_8U
既不是CV_32F
也不是CV_64F
。请注意,支票仅限于深度而非通道数。
所以使用Mat_<Tp>
的正确代码是(Mat1f
或Mat1d
):
Mat1f B(400, 10);
for (r = 0; r < 20; r++)
{
for (c = 0; c < 20; c++)
{
B(n,0) = 1;
B(n,1) = r;
B(n,2) = c;
B(n,3) = r*r;
B(n,4) = c*r;
B(n,5) = c*c;
B(n,6) = r*r*r;
B(n,7) = c*r*r;
B(n,8) = c*c*r;
B(n,9) = c*c*c;
n = n + 1;
}
}
// You don't have to initialize 'OutputArray' for OpenCV functions
Mat1f Bpinv;
invert(B, Bpinv, DECOMP_SVD);
或者,使用Mat
:
Mat B(400, 10, CV_32FC1);
for (r = 0; r < 20; r++)
{
for (c = 0; c < 20; c++)
{
B.at<float>(n,0) = 1;
B.at<float>(n,1) = r;
B.at<float>(n,2) = c;
B.at<float>(n,3) = r*r;
B.at<float>(n,4) = c*r;
B.at<float>(n,5) = c*c;
B.at<float>(n,6) = r*r*r;
B.at<float>(n,7) = c*r*r;
B.at<float>(n,8) = c*c*r;
B.at<float>(n,9) = c*c*c;
n = n + 1;
}
}
// You don't have to initialize 'OutputArray' for OpenCV functions
Mat Bpinv;
invert(B, Bpinv, DECOMP_SVD);
答案 1 :(得分:0)
您使用的是CV_32FC1
,而不是CV_32F
。查看this answer以查看差异。我认为如果你把它改成CV_32F
它应该有效。