How to get Q and R in QR decomposition ?

asked 2016-04-29 06:24:01 -0600

gino0717
196 ●1 ●10

Hi there,

I have to use QR decomposition to get q and r matrix.I find that solve() function can solve QR decomposition problem. However, I cannot get the q and r matrix in this function as getting some matrix in SVD. Is there any way to get the q and r? It seems a old problem but i cannot find the solution on the internet.

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well, I find some code here

http://suzuichibolgpg.blog.fc2.com/bl...

gino0717 ( 2016-05-12 20:54:34 -0600 )edit

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answered 2016-04-29 21:20:04 -0600

Tetragramm

7376 ●13 ●37

That's not really OpenCV's thing. It has the solve() function for basic tasks, but if you really need linear algebra use something like Eigen. You can use the Eigen::Map to avoid copying the data. It'll take a bit of playing with the template parameters, since OpenCV is row major and Eigen is column major by default, but they have good documentation.