Re: Not getting Poisson Noise in octave

[Terry Duell]

Hello Carlo,

On Mon, 03 Dec 2012 14:56:00 +1100, c. <address@hidden> wrote:

> On 3 Dec 2012, at 00:05, Terry Duell wrote:
>
> > You could also try something like this...
> >
> > bb = aa + 3/256*randn(h,w);
> > where h,w are the height, width of aa.
> >
> > The first approach takes 13.74 sec here, for my little test image. The  
> > second takes about 0.01 sec.
> > The results appear quite similar, but I guess it depends on your  
> > particular need.
>
> that is equivalent to
>
> bb = imnoise (aa, 'gaussian', 0, sqrt(3/256))
>
> which works the same in Matlab and Octave, the version I proposed
> is equivalent to
>
> bb = imnoise (aa, 'poisson')
>
> which is not yet implemented in Octave:

[snip]

OK, then I should not be making any changes to the imnoise code.

Cheers,
--
Regards,
Terry Duell