Question about Z transform of decimation
I am learning about digital decimation. The problem is like this:
Z-transform of input sequence and filter aree X(z), H(z) respectively.
After the filter H(z), there is a 2 decimation. From one book talking
about decimation, it says the Z-transform of output sequence after
I have learned Z transform, but no Z transform with exponential of
(1/2). Can you tell me how to get the above result? Or, give me some
link relate to that. I have checked DSPGuru website without success.
Thanks in advance.
firstname.lastname@example.org...Differences between laplace transform, z transform and fourier transform
I have studied three diff kinds of transforms, The laplace transform, the
z transform and the fourier transform. As per my understanding the usage of
the above transforms are:
Laplace Transforms are used primarily in continuous signal studies, more
so in realizing the analog circuit equivalent and is widely used in the
study of transient behaviors of systems.
The Z transform is the digital equivalent of a Laplace transform and is
used for steady state analysis and is used to realize the digital circuits
for digital systems.
The Fourier transform is a particular case of z-transform, ...how to fourier transform an image?
I want to play a little bit with fourier transformations.
Until now I always used phantom(256) to get a object and fourier
transformed it. Now I would like to use pictures. For example I created
a circle with my drawing program and saved this file as an jpeg. if I
now load this picture with imread('pic.jpg') I can't fourier transform
it because it is not a double class but some uint8 class object. I
tried to save the picture as an indexed file (thats what the matlab
help says) but it didn't help.
so is there a way to load picture in order to do fft?
If not, is there a way to dr...How to make "rainbow" RGB values?
I want to map an int to a color on a rainbow spectrum, i.e. for an int
n in the range 0..N, low values (near 0) should map to the red end,
and high values (near N) to the blue/violet end.
The return values should be R, G, B tuples (well, "#xxxxxx" color
codes, but that's not the hard part.)
The trouble I'm having is in coming up with a good way to generate
color values that approximates the "ROY G BIV" rainbow spectrum. This
is just a simple, non-scientific, non-photographic application,
I've tried a simple scheme of overlapping sines...FOURIER MELLIN TRANSFORM OF IMAGE
Please provide a solution for getting the Implementation Of Fourier Mellin transform for Image? Also, as i require to calculate fourier mellin of each image , i have to store each value in database.Plz provide the suggestion for getting FMT of Image in Matlab.
Thanx all. Awaiting for ur responses.
...How to combine 3 grayscale images into one RGB color image ?
How to combine 3 grayscale images into one RGB color image ?
I have 3 "DensityGraphics" pictures and I want to combine them in
such a way that the one represents the Red, the others - green and blue
This procedure is called "merge channels" in Photoshop.
It must be quite easy to solve that even without external packages, but
I am not experienced enough.
I don't understand mixing colors so this probably isn't right, but it may get you started.
Im currently trying to work out some applications for the DFT in both
the scientific and communications domain. Please could somebody offer
me some examples of both?
> Im currently trying to work out some applications for the DFT in both
> the scientific and communications domain. Please could somebody offer
> me some examples of both?
What do you mean by "work out"?
Engineering is the art of making what you want from things you can get.
�������������������������������������������������������������...Regrbein linear transformer
Iam implementing turn to turn fault for a transformer.But Iam unable
to create turns for Linear transformer in SIMULINK.I want to how to
give the parmeter of no of turns for a Linear transformer in SIMULINK
I would greatly appreciate if u can give me some advice. Thank you.
...modality LUT transform, VOI LUT transform, representation LUT transform
I'm new in DICOM, i need to clarify these following concept: modality
LUT transform, VOI LUT transform and representation LUT transform.
Does anyone have thought?
On Jun 14, 10:21=A0am, quyps <phamsyqu...@gmail.com> wrote:
> Hi all,
> I'm new in DICOM, i need to clarify these following concept: modality
> LUT transform, VOI LUT transform and representation LUT transform.
> Does anyone have thought?
Look in DICOM Part 4, Annex N, which describes the grayscale display
...Transform a Square Image to Circular
I'd like to transform a square image and warp it so that it's
circular. I know there's a imtransform function in matlab but I have
a hard time understanding how it works. Would someone care to give
sample code to do this?
Also, can this be extend to 3D (i.e. cube to sphere)?
<SNIP wants to put his/her friends face onto a sphere...
> I'd like to transform a square image and warp it so that it's
there are many solutions
% 1) a simple texture warp
sh=s...GUI with wavelet transformates
I have to create for a project at university a GUI like the one from Wavelet toolbox,but not so complex.I need 1D 2D,DWT,IDWT,decomposition,coefficients..if anyone has smthg like this please contact me.A good day!
"haiduc " <email@example.com> wrote in message
>I have to create for a project at university a GUI like the one from
>Wavelet toolbox,but not so complex.I need 1D
>2D,DWT,IDWT,decomposition,coefficients..if anyone has smthg like this
>please contact me.A good day!
No one here is simply going to give...Zoom-in transformation
I'm creating a 2D geographical map using Java graphics and have created
Point, Line and Shape classes as well as a Matrix class to perform
transformations. Within my transformation class I have methods to perform
rotation, translation and scaling.
If I want to zoom into my map what kind of matrix transformation do I use?
Will scale work or do I have to perform a different type of matrix
...Binary image transformation function
I'm looking for some good image transformation function(s) form my program.
I'm trying to use NN to classify hand gestures. That's why I need to
transform my binary hand gesture image into vector (for training and
I looking for function(s) that is(are):
* able to give me quite small vector (less then 320 fields)
* able to return similar vector (for the same gestures) values when
changing angle of hand gesture in front of camera
* able to return similar vector (for the same gestures) when changing
distance to camera
I know that I might need more...transforming vector by affine transformation
Let A be an affine transformation and v a vector. The book "Geometric
Tools for Computer Graphics" says:
T(v) = T(Q - P) = T(Q) - T(P)
But 1 + (-1) = 0. Don't the weights of the points need to sum to
one? Q - P isn't even an affine combination...
A vector being the difference of two points is not translated over
affine transformation. So, vectors are transformed linearly, not
affinely. For an affine transformation T(x) = Bx + c, where B is a
square matrix whose columns are the target coordinates of the local unit
axes and c the target position of the local origin, ...Asus shows an updated Transformer Prime & beats Apple to the punch w/higher res HD display
1920x1200, front camera upped from 1.2MP to 2MP 1080p camera.
This is looking even sweeter.
On 12-01-10 6:15 AM, Flint wrote:
> 1920x1200, front camera upped from 1.2MP to 2MP 1080p camera.
> This is looking even sweeter.
You just wait until Apple comes up with its own 7 inch tablet (by far,
the most practical form factor, IMNSHO) and that will most certainly be
On 1/10/2012 7:28 AM, Nashton wrote:
> On 12-01-10 6:15 AM, Flint wr...stl transform error
what's wrong with the following code
char *name =3D "HHTT KKK KHH";
std::string lname( name );
std::transform( lname.begin(), lname.end(), lname.begin(), tolower );
The error comes in the last line.
C:\web\httpgrab122\happyhttp.cpp|514|error: no matching function for call t=
o 'transform(__gnu_cxx::__normal_iterator<char*, std::basic_string<char, st=
d::char_traits<char>, std::allocator<char> > >, __gnu_cxx::__normal_iterato=
r<char*, std::basic_string<char, std::char_...std::transform to append to a string
I've been struggling all day today with this, maybe you could give me some
I would like to (elegantly) concatenate a string out of all node values in
a map. I have to do it without using boost (as it is forbidden to use it
in our project).
(Forgive me for giving a non-compiling code.)
---- begin ----
---- end ----
What would you recommend placing instead of ???? ?
I've an ugly solution where I declare (something like):
transform(...F/A Panasonic RGB Monitor closing Sunday
Great color and ready for those Commodore classics!
"Tom Ramm" <firstname.lastname@example.org> wrote in
> Great color and ready for those Commodore classics!
1 bid @ $12.99... man, I wish I could find one that cheap in Canada for
...transform function and its z-transform
i have frequency caracteristics of a lawpass filter, cutoff frequency,width of the transition band,undulation of the bandwidth,gain in the stopband
and i would get the transfer function and its z-transform using matlab commands, can anybody help me,ireally need
On 3/7/2012 4:55 PM, khadidja wrote:
> i have frequency caracteristics of a lawpass filter, cutoff frequency,width of
>the transition band,undulation of the bandwidth,gain in the stopband
> and i would get the transfer function and its z-transform using matlab commands,
>can anybody help me,ireally need
> thank...integer to integer wavlet transformation for lossless compression
Thank you in advance for the help. I have to admit that I am almost
ignorant on wavelet although I sometime use the matlab wavelet toolbox
for de-noising. I need to do some lossless compression using wavelet.
I found the reference . But it is beyond my domain to implement it.
I am I am wondering if the integer to integer transform using wavelet
has been implement as a function in matlab. The function probably
should look something like
transformed_integer_series = wavelet_int2int(original_integer_series,
Thank you very much...
 Wavelet Tran...equivalence between Z-transform and Laplace-Transform
I am studying a digital phase locked loop.
The closed loop filter of this loop has the following Z-Transform :
H(z) = ((K1+K2)*z^-1 - K1*z^-2) / (1 + (K1+K2-2)*z^-1 + (1-K1)*z^-2)
I would like to know the damping factor and the natural pulse of the
equivalent time continuous filter H(p).
by equivalent, I mean a filter H(p) that would give in the time domain,
the same response to an unit step than the one I would get in the
discret domain (one being the discretized version of the other).
I thought I just had to replace z by 1+p in H(z). doing the
approximation e(p)=1+p. But it ...Transform Datasets
How can I transform this table :
ID ID_BIS AGE SEXE
1 1 20 F
2 2 25 M
3 2 10 F
4 2 5 F
ID ID_BIS AGE SEXE
1 1 20 F
2 2 25 M
3 2 25 M
4 2 25 M
actually, we have to duplicate the information age and sexe where
id_bis is equal.
On Nov 29, 7:35=A0am, ash007 <ramsamyash...@gmail.com> wrote:
> actually, we have to duplicate the information age and sex...Transformation Problem
I am trying to transform an expression that involves Sin[x] and Cos[x] into
an expression that only contains Cos[x] terms. However, I do not succeed.
The very problem seems to be that the built in rules that Mathematica knows,
will always rewrite e.g. terms like -Cos[x + Pi/2] to Sin[x].
f = Sin[x] + Cos[x]
Now, for the sake of the example, I want mathematica to start represening f
as Cos[x] - Cos[x + Pi/2]. So I try:
In : f /. Sin[x] -> -Cos[x + Pi/2]
Out: Sin[x] + Cos[x]
It seems that mathematica does nothing, but it does: It does the
repl...Re: Transforming negative variable #7
I stand corrected, thanks. Hopefully the poster will look through the =
posts to see that binning the data is probably not appropriate.=20
SPlus has captured David??? Oh, no...he must be terrorizing all the new =
statisticians into THINKING!!!
Yes, one could hypothesis that a decrease in wealth could cause oil =
prices to rise. Most people would assume without testing that the =
hypothesis is not correct. Suppose, though, all those farmers who had =
the values of their land decline started driving long distances with =
their Silverado's or F150's, thereby dramatically increasing...Fourier Transform of the Auto_correlation of a Signal
Power Spectrum Density (PSD) of the randomized switching
signal is defined as: The fourier transform of the
auto_correlation function of the signal. How to express
this in A Matlab code to get the PSD for a randomized
signal y=[6 3 7 9 2 1 7 6 5 3 5 9] that corresponds to a
time series t=[1 2 3 4 5 6 7 8 9 10 11 12].