Re: Usage of Fourier transforms...


"PeteS" <PeterSmith1954@xxxxxxxxxxxxxx> wrote in message
news:1157803817.944693.108120@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Srinu wrote:
Hi all, this topic is of electronics-communication interest. Here my
query is, what is the usage of Fourier transform ? Why it is so widely
used in image processing and communication equipments ? Please suggest.

A lot of different transforms share the generic name 'Fourier
Transform'. A common use is to separate the various components in some
signal for analysis and processing. That's a very broad statement, and
I suggest you look at some resources for yourself to understand what
use that can be.


huh? Theres only one fourier transform!



.

Relevant Pages

  • Re: Usage of Fourier transforms...
    ... I don't know much about image processing. ... But that signal can be decomposed into the sines and cosines in the Fourier transform, and transforming a differential equation can turn it into an algebraic equation that is much easier to solve. ... As long as the circuit is linear, and you know its effect on pure sinusoidal waves, you're just a Fourier transform away from determining its effect on all signals. ... I'm not sure of a good way to characterize or even to name a low-pass filter if you didn't have the concept of frequency that comes in with sinusoidal signals. ...
    (sci.electronics.basics)
  • Re: Usage of Fourier transforms...
    ... used in image processing and communication equipments? ... One use is image or signal compression. ... Of course, the devil is in the details, but the Fourier transform is ... Home of DaqGen, the FREEWARE signal generator ...
    (sci.electronics.basics)
  • Re: 2D FFT
    ... illywhacker wrote: ... Most if not all the resources i read about 2D FT for image processing are ... I'm another that has no feel for a 2D Fourier Transform. ... In the "1D" case we can build on a demonstration of how only odd harmonics of a sine wave can be added to approach a square wave. ...
    (comp.dsp)
  • Re: Usage of Fourier transforms...
    ... what is the usage of Fourier transform? ... used in image processing and communication equipments? ...
    (sci.electronics.basics)
  • Re: basis functions in Fourier transform.
    ... This might be more of a syntax question than anything else but I am ... image processing books start with a continuous image model ... Continuous Fourier Transform: ... Discrete Fourier Transform: ...
    (sci.image.processing)
Quantcast