[Scilab-users] Hilbert transform query

[Tim Wescott]

Any time you go from 1D to 2D you suddenly end up with more than one way
to do things, so I'm pretty sure that "how would one..." should really
be worded "how would YOU...", or perhaps "how would someone in this
field...".

It sounds like you want to keep things rectilinear, so it may be best to
just apply the transform column-by-column and row-by-row.  That SHOULD
work, and if you do it as matrix operations it should be pretty fast in
Scilab.

On Fri, 2016-02-05 at 12:52 +0000, Lester Anderson wrote:
> Hi Serge,
> 
> I am working with grid data, so looking for the 2D Hilbert, the
> results I think should appear similar to doing a directional
> derivative, where X highlights features with N-S trends and E-W for Y.
> 
> Lester
> 
> 
> 
> On 5 February 2016 at 12:24, Serge Steer <Serge.Steer at inria.fr> wrote:
> > Le 05/02/2016 10:56, Lester Anderson a écrit :
> >>
> >> Hello
> >>
> >> A quick query. How would one define the Hilbert transform of a grid
> >> for X and Y directions; looking for two solutions Hx and Hy (for the
> >> real values).
> >
> > Can you explain more precisely what you expect?
> >  Do you want to apply Hilbert transform to each column and to each rows or
> > to perform a 2D Hilbert transform?
> > Serge
> >>
> >>
> >> Thanks
> >> Lester
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-- 

Tim Wescott
www.wescottdesign.com
Control & Communications systems, circuit & software design.
Phone: 503.631.7815
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