"Felix E. Klee" on wrote...
| On Friday 24 March 2006 01:15, Anthony Thyssen wrote:
| > | So, why those many filters? Which filter corresponds to algorithm B?
| >
| > Algorthim A is the 'Point' filter, Algorithm B is the 'Box' filter
| >
| > However just averaging pixels does not always produce a good result
|
| Well the box filter is a simulation of printing out the picture and then
| scanning it in at a different resolution, so IMHO it's the most natural
| filter. Everything else leads to modification of the content, so to speak,
| of original image.
|
| > as you can for just a small size reducion an original line group
| > then a single averaged line, then another original line group, and so
| > on.
|
| What filter does the above algorithm correspond to? It sounds rather odd for
| me.
|
That is the box filter, and it isn't odd, just the result of pixel group
averaging (box) if you shrink or expand an image very very slightly.
If you shrink/expand more than about 30% then the effect starts to
dissappear.
| > It was an accident. I have CC'd this email. I'll let you Cc the
| > previous.
|
| You quoted enough of that email - no need to send it again.
|
I like responding in a 'context thread' style of emailing. It is a shame
that so many new users of the internet don't use it.
| > NOTE I will not be around from mid next week as I am on a month long
| > European Vacation.
|
| Enjoy your vacation! May I ask what part of Europe you're going to visit?
|
Big family reunion in Venlo, Netherlands (with a tour of that country).
But we also plan to visit London, Paris, Berlin, and if it can be
arranged Vienna. On the way back we have a three night stop over in
Seoul, Korea.
Anthony Thyssen ( System Programmer ) <[EMAIL PROTECTED]>
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Zatheris is, used to being beast of burden to other peoples needs.
Very sad life. Probably a very sad death. At least there is symmetry!
-- Zatheris, Bablyon 5, ``War Without End''
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Anthony's Home is his Castle http://www.cit.gu.edu.au/~anthony/
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