Subject:
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Mosaic programs
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Newsgroups:
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lugnet.build.mosaic
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Date:
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Tue, 15 Feb 2005 17:41:55 GMT
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Viewed:
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5105 times
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Now we have something to compare:
On the left the original image.
In the middle my result with black, white, yellow, red and blue.
On the right Corey’s result with the same colours.
I don’t make artistic mosaics, they’re purely mathematical. I use the
Floyd-Steinberg dithering algorythm. Bob uses it too (plus a few variations of
this algorythm).
So Corey: do you use an existing algorythm (like iterative
algorythms, that I can’t program unfortunately), or have you invented something
completely new?
The first thing I noticed about your image: the area
bottom-right is entirely white, while this area on the original image isn’t.
With my FS-algorythm I expected pixels of a different colour in this area (I
didn’t remove them manually to make comparison possible). What did you do to get
this area white? Do you use some kind of “less dithering”-method?
In my mosaics
there are many 1x1 elements, much more than in yours. Is this intended or just a
coincidence? I’m asking this because I also make ministeck mosaics where 1x1
elements are very rare. I wrote an extra module to avoid as many 1x1 elements as
possible, but I’m not completely happy about it. All suggestions are welcome.
Maybe you can lift a corner of your veil?
Maarten
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Message has 1 Reply:
 | | Re: Mosaic programs
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| (...) I'd say it looks like the image on the right was contrast enhanced before the dithering was applied. Stand back and squint at the images to see the change in contrast. The light colors are all clearly whiter. You can also see some color (...) (20 years ago, 15-Feb-05, to lugnet.build.mosaic, FTX)
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