Re: Noise generation - salt and pepper

On Jul 26, 7:33 am, "aruzinsky" <aruzin...@xxxxxxxxxxxxxxx
cathexis.com> wrote:
"I barely recall even hearing about Cauchy noise. Where does it occur?
Why and how would you use it if you did model it?"

It does not occur naturally, but serves as a model for near worst case
statistical situations. It is also commonly used as an analytical counter
example to dispel some statistical myths.

Where does your discontinuous "salt and pepper" noise occur? With Cauchy
(continuously) distributed noise, all values can occur, but most values
will be clipped at 0 and 255 and give the appearance of salt and pepper.
Analytically, Cauchy noise works for a floating point representation of an
image whereas your discontinuously distributed noise doesn't.


Funny, how a related question on the existence of 'cauchy' distributed
noise was being discussed differently here: :-)

http://groups.google.com/group/sci.image.processing/browse_thread/thread/b436ec103ca5c90/f8d59de4df188935?lnk=gst&q=cauchy&rnum=1#f8d59de4df188935

.

Relevant Pages

  • Re: Noise generation - salt and pepper
    ... "I barely recall even hearing about Cauchy noise. ... will be clipped at 0 and 255 and give the appearance of salt and pepper. ... image whereas your discontinuously distributed noise doesn't. ...
    (sci.image.processing)
  • Re: Noise generation - salt and pepper
    ... how a related question on the existence of 'cauchy' distributed ... noise was being discussed differently here: :-) ... I see no inconsistency between my statements. ... (BTW, I am having trouble getting my Usenet portal, ...
    (sci.image.processing)
  • Re: Noise generation - salt and pepper
    ... how a related question on the existence of 'cauchy' distributed ... noise was being discussed differently here: :-) ... I see no inconsistencies in my statements. ...
    (sci.image.processing)
  • Vegetable Orchestra
    ... didnt know a pepper could make that noise? ... Red Tomatoe ...
    (rec.gardens.edible)
  • Vegetable Orchestra!!!!
    ... didnt know a pepper could make that noise? ... Red Tomatoe ...
    (uk.rec.gardening)
Quantcast