RE: [Vxl-users] PMatrixDecompCR does not guarantee a reasonable calibration

Can you make a flag so the old behaviour is toggleable?


> -----Original Message-----
> From: vxl...@li... 
> [mailto:vxl...@li...] On Behalf Of 
> Peter Vanroose
> Sent: 14 November 2002 08:56
> To: Yu Lianqing
> Cc: vxl...@li...
> Subject: Re: [Vxl-users] PMatrixDecompCR does not guarantee a 
> reasonable calibration
> 
> 
> > PMatrixDecompCR(oxl/mvl) decomposes a projection matrix P 
> into the form
> > P = K [R t] where K is upper triangular and R is a rotation.
> > However, it only guarantees that K(0,0)>0 and K(2,2)=1 and 
> not K(1,1)>0,
> > which should be the focal length in y coordinate axis.
> 
> If nobody objects, I will change the source code to guarantee
> K(1,1) >= 0, which as you point out is easily done by just changing
> the sign of a few output values.
> 
> 
> 	Peter.
> 
> 
> 
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