Thread Subject: Z transform

Is there a function for implementing a Z transform on an
image? If not, any pointers on how to go about using a
Z-transform on a read image?

Mohamed wrote:
> Is there a function for implementing a Z transform on an
> image? If not, any pointers on how to go about using a
> Z-transform on a read image?

When I search mathworks.com for Z-transform I find a number of hits.

--
Q = quotation(rand);
if isempty(Q); error('Quotation server filesystem problems')
else sprintf('%s',Q), end

Walter Roberson <roberson@hushmail.com> wrote in message
<%Ghqk.16561$hx.10008@pd7urf3no>...
> Mohamed wrote:
> > Is there a function for implementing a Z transform on an
> > image? If not, any pointers on how to go about using a
> > Z-transform on a read image?
>
> When I search mathworks.com for Z-transform I find a
number of hits.
>
> --
> Q = quotation(rand);
> if isempty(Q); error('Quotation server filesystem problems')
> else sprintf('%s',Q), end

is there a specific function for applying z transform like
fft() for discrete fourier transform?

Mohamed wrote:
> Is there a function for implementing a Z transform on an
> image?

None is supplied with Matlab.

> If not, any pointers on how to go about using a
> Z-transform on a read image?

There have been a number of discussions about the relationship between
1D FFT and 2D FFT. Perhaps the relationship between 1D Z-transform
and 2D Z-Transform is similar and you could use the 1D Z-transform
function czt() [from the signal processing toolbox] to create a
2D Z-transform?

> If not, any pointers on how to go about using a
> Z-transform on a read image?

I gave a "pointer" in my previous response: if you google
z-transform matlab you will get many hits. Someone may have posted
the algorithm or complete source, perhaps. Sorry, not my research
area.

--
Q = quotation(rand);
if isempty(Q); error('Quotation server filesystem problems')
else sprintf('%s',Q), end