Graphic filters

http://wannabe.guru.org/alg/index.html

It's not what I am looking for. I want filters like Sobel, prewit, Sepia, etc.

Here is one site;
http://pico.i-us.com/filters/ffcategories.htm

Go to this search engine and type in "Graphics Filters", the site list is long.

Naturally you need the engine address!!!
http://infind.inference.com

Adjusted points from 100 to 500

These links were useless. I asked about web sites where I could find graphic filters algorithms not plug-ins for photoshop. I don't have time to make researches on the web.

I need only 3 filters. Not sobel or prewit please.

try this one:
http://www.exaflop.org/docs/cgafaq/cga3.html

you might go to

  http://www.gimp.org/

and download the source code of the gimp, a graphics manipulation program with many filters.

If you don't have time to search the web, what makes you think that we have an abundance of time to do it for you?

eal4: I tought someone else could have some algorithms on his computer. I never told that someone else should do search for me.

did u try my link?

I know you were in a rush to get the algorithms. Are you still interested?

I know Prewitt and Sobel and have researched thier variations. If you want in-depth explinations, would you want algorithms in C code, pseudo, or just explained in plain English?

Hope I can help

This one is perhaps what you are looking for:

http://www.efg2.com/lab/

Ciao, Mike

fmichaud :

O.k., I don´t know where are you planning to use the filters, but the main mathmatical algorithm fore some of the filters u asked for are:

Derivative Filters:

Roberts:  

            1  0
            0 -1

or:
             0  1
            -1  0


Prewitt:

          -1 -1 -1
           0  0  0
           1  1  1

or:
           -1 0 1
           -1 0 1
           -1 0 1

Sobel:


          -1 -1 -1
           0  0  0
           1  2  1

or:
          -1 0 1
          -2 0 2
          -1 0 1

You must apply this matrix to all of your image matrix by simple multiplication. The boundaries of the image remain the same.

If I was of help, and you need more you can contact me.

Also I would like to know where are you planning to use them so I can give you more info.

I said that I don't need Prewit nor Sobel filters.

fmichaud :

So why you answered Alisher_N  that you wanted Prewit an Sobel filters? (comment #2) O.k. I read the other comment where you say you don´t want them! sorry!

What kind of filters do you want? So I can send them to you if I have them.

HEWEY

fmichaud:

Do you care if they are in the frecuency domain?

I said that I don't need Prewit nor Sobel filters.

Sorry for the last post. It was an error.

My work on filters is now done.

Ok, thank you! Here are the points!