| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 3276.1 | And what about the output? | FROCKY::BALZER | Christian Balzer DTN:785-1029 | Wed Jan 03 1990 02:58 | 18 |
| Re: .0
I assume you want to achieve some kind of mosaic/pixelisation effect
of those photographs. These effects (plus a load of other neat ones
like artificial/false colors) could be easily achieved on an Amiga,
once the images have be scanned into the system by means of a video
digitzer or color scanner. I'm pretty sure that someone closer to
you than me (Germany) has the necessary equipment and time.
However, you didn't tell us what kind of output media you would like
get. Video tape or photographic screen shots would be easily achieved
by nearly everybody in the Amiga community, but if you're interested
in a "perfect" slide or print, the Polaroid palette system is the
only and VERY expensive way to do it. Pretty decent output can be
achieved by a color ink printer like the HP Inkjet/DEC LJ250.
Regards,
<CB>
|
| 3276.2 | mosaic effect on paper | TOOK::D_SHERMAN | | Thu Jan 04 1990 10:30 | 6 |
| I only need output on paper so ink-jet would work I guess.
Yes, though - I do want a mosaic effect.
Germany is a bit too far, but thanks for the response!
Diane
|
| 3276.3 | Pixel mosaic. | LEDS::BUSCH | Dave Busch at NKS1-2 | Tue Jan 30 1990 12:44 | 19 |
| I've used D-Paint II to make mosaic type displays. What I do is:
1. Digitize (in B&W) a photo.
2. Pick up the picture as a brush.
3. Decrease the size of the brush one or more times.
4. "Paint" a shrunken copy of the picture with each of the smaller brushes.
5. Pick up one of the copies as a new brush and re-enlarge it.
6. Paint a new full size copy of the picture.
The picture will have lost resolution and each new larger pixel will have the
color of one of the pixels from the original area of the picture. However, I'm
not certain that the color of the large pixel is in fact an average of all the
pixels which occupied that area, or if it is only one of the corner pixels of
the original, since all of the other pixels get lost every time the brush is
reduced/enlarged. Does anybody know how to force it to be the correct average
color?
Dave
|
| 3276.4 | | WJG::GUINEAU | | Tue Jan 30 1990 13:09 | 3 |
| Wouldn't averaging tend to blur sharp edges?
john
|
| 3276.5 | | LEDS::BUSCH | Dave Busch at NKS1-2 | Wed Jan 31 1990 13:14 | 14 |
| < Wouldn't averaging tend to blur sharp edges?
It would certainly reduce the overall resolution, but that is precisely the
effect I'm looking for. The edges of the re-enlarged pixel would still be sharp,
it's just that the color within the macro-pixel would be the true average of all
the colors of the micro-pixels that made it up. Another way of looking at this
is:
Divide a 512 by 512 pixel picture up into (for example) a 32 by 32 array of
cells. Within each cell of 16 by 16 pixels, take the average of the 256 pixels
and then fill the entire cell with that average color.
Dave
|
| 3276.6 | later | MILKWY::JANZEN | Tom 228-5421 FXO/28 | Wed Jan 31 1990 13:40 | 5 |
| The last paragraph in .5 describes two-dimensional convolution. There
is a public domain program for processing pictures. it handle ham, and
at least on most formats does convolution, derivatives (outlining)
and so on. Maybe I'll find it.
Tom
|
| 3276.7 | just one click of the mouse | HYSTER::DEARBORN | Trouvez Mieux | Wed Jan 31 1990 13:56 | 5 |
| Pixmate, Butcher and Deluxe Photo Lab will all do this for you.
The effect is usually refered to as Mosaic.
Randy
|
| 3276.8 | Smoothing comes close to what you want | DUGGAN::GAY | Now where'd I put that hammer... | Thu Feb 01 1990 12:50 | 9 |
| If you don't have anything but Deluxe Paint, you could try smoothing
the picture first, then the shrink/expand trick. The smoothing will
average the colors (but using the current palette, it doesn't recompute
them).
Now, if only it would do HAM mode.
Yours
Erg
|