How to use solve() method to find out linear equation

1

Hi, is there any method beside solve() that can find out the variable x y z like below which i would the variable and the input output( all the numbers below) need to be mat.

I have try with matrix<> but i cannot accept matrix<Matrix < float > > and also array of Mat but the solve method cannot accept mat[];
image

i need this equation is to find the phase to height converstion used in unwrapped method which need to find the consant a,b,c of the method below by using 3 known value equations. which can be formed as matrix like the image attached above
image

2

that sounds very confused and makes no sense at all.

look for examples. there must be examples you can use.

1 Like
3

i been searching for examples but none of it can be use

4

a very simple example based on this

float a[3][3] = {{ 3, 2,-1},
	             {2, -2, 4},
	             {-1, 0.5, -1}};
float b[3][1] = { {1},
	             {-2},
	              {0} };

Mat A = Mat(3,3 ,CV_32FC1, a);
Mat B = Mat(3,1, CV_32FC1, b);

Mat x = A.inv() * B;
cout << "x=" << endl << " " << x << endl;

Mat y;
solve(A,B,y);
cout << "y=" << endl << " " << y << endl;

x=
[1;
-2;
-2]
y=
[1;
-2;
-2]

(and the Matrix<> confusion probably comes fom ppl mixing in Eigen code)