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PolarDecomp QRDecomp


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#1 Alundra   Members   -  Reputation: 1304

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Posted 25 May 2014 - 03:08 PM

Hi all,

There is 3 method to decompose a matrix : Polar Decomp, QR Decomp and SVD.

We can avoid to speak about SVD because it's not a good method for affine transform.

We end with Polar Decomp and QR Decomp, the difference is the coord independent on Polar Decomp.

Coord Independent mean S * R or R * S can be extracted, QR Decomp only allow S * R.

Polar Decomp has a Rotation Scaling, QR Decomp doesn't has from what I saw.

I would avoid Rotation Scaling and QR Decomp looks a good candidate.

Is it the only difference ? Is QR Decomp safe like Polar Decomp ?

Thanks


Edited by Alundra, 25 May 2014 - 03:08 PM.


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