Pixelate plugin

Hi,
i have small problem ... i need plugin which will be convert my image to points. It means i will specify rows, cols and number of colors and my picture will be converted. Result: small points (and a bit space around each point) like mosaic.

I need this plugin to make template for print this on t-shirt (my machine need this format of image to make this on t-shirt)

If you know some plugin wich will do it or you know how could i do it.... answer plz :)

--

Go to FILTER
Go to PIXELATE and coose what You'd like
"

ikciu" wrote in message

Hi,
i have small problem ... i need plugin which will be convert my image to points. It means i will specify rows, cols and number of colors and my picture will be converted. Result: small points (and a bit space around each
point) like mosaic.

I need this plugin to make template for print this on t-shirt (my machine need this format of image to make this on t-shirt)

If you know some plugin wich will do it or you know how could i do it.... answer plz :)

--

130 zebrawszy my

".::[ikciu]::." wrote:

130 zebrawszy my¶li wystuka³(a):
|| Go to FILTER
|| Go to PIXELATE and coose what You'd like

v FUNNY .... if you dont understan my problem dont answer.

He understood your question, but i'm afraid you did not unterstand his answer ;)
Pixelate->Mosaic does (almost) what you want, with the only limitation that each tile will be quadratic.

The workflow is as follows:

Calculate the number of rows/columns you want to have. Divide the length/width of your image by this figure to get the size of a single mosaic tile. Make sure the width / height of your image are both multiples of the desired tile size. Adjust the canvas size if necessary.

Apply Filter->Mosaic using the tile size you calculated above.

Create a new image with exactly the size of a single tile and fill it with black.

With the pencil tool and the foreground color set to white, draw a line along the top and left side of this new image. Make this line as thick as you want the border between the mosaic tiles to be.Select->All when you are done and Edit->Define pattern. You can trash this image now because you will not need it any longer.

Create a new layer on top of your pixelated image and fill it with the paint bucket set to pattern mode and your newly created pattern selected.

Set the Layer mode of this layer to Screen.
If you prefer black lines between the tiles, invert the top layer and set the layer mode to multiply.

Flatten down and change color mode to Indexed Color (Image->Mode). Set the number of colors as desired and disable dither, force black and white.Remember that black and white count as colors of their own. Convert to RGB or CMYK if necessary.

Peter

Peter Wollenberg zebrawszy mysli wystukal(a):
|| He understood your question, but i'm afraid you did not unterstand || his answer ;)
|| Pixelate->Mosaic does (almost) what you want, with the only || limitation that each tile will be quadratic.

Nope, you are wrong too. I need one pixel / shape has only one color - no more (exactly one).
Best solution for this is HALFTONE, but in this soultion i cant specify nuber of colors.

--
~~~~~~~~~~~~~~~~~~~
Ikciu

[ gg: 718845 ]
[ www: www.lubinianin.com ]

..::[ikciu]::. wrote:

130 zebrawszy my¶li wystuka³(a):
|| Go to FILTER
|| Go to PIXELATE and coose what You'd like

v FUNNY .... if you dont understan my problem dont answer.

Well, if you learnt to express your "problem" in CLEAR english, people might be able to understand what you are asking and give a correct answer!! Don't be so rude to people who are doing their best to help you. Even to this moment I cannot follow your question because it is so poorly expressed.

Brian

".::[ikciu]::." wrote in message

Peter Wollenberg zebrawszy mysli
wystukal(a):
|| He understood your question, but i'm afraid you did not unterstand
|| his answer ;)
|| Pixelate->Mosaic does (almost) what you want, with the only || limitation that each tile will be quadratic.

Nope, you are wrong too. I need one pixel / shape has only one color - no more (exactly one).
Best solution for this is HALFTONE, but in this soultion i cant specify nuber of colors.

How about reducing the number of colors first? Think about converting to Indexed color first, then return to RGB mode for filters ...

Bart

It is difficult to figure out just what your question really is, and people have given answers that do address what you seem to be asking. Mosaic DOES produce a display in which each square is uniform, i.e. has just one color. Of course, that color is an average of several original ones. If you want an image in which each square of NXN pixels is derived from a single pixel in the original image you can use Image Size with nearest neighbor sampling to create a larger image in which that is true. And if you use Bart's idea of using indexed color first, you can indeed control the number of different colors present. If none of these approaches corresponds to what you "want" you really need to describe it in terms that are complete and exact.

Brian zebrawszy mysli wystukal(a):
|| Don't be so rude to people who are doing their best
|| to help you.

Almost always stupid answer is worse then none.

|| Even to this moment I cannot follow your question
|| because it is so poorly expressed.

You right :)

--
~~~~~~~~~~~~~~~~~~~
Ikciu

[ gg: 718845 ]
[ www: www.lubinianin.com ]

well, I'm going to take a stab at understanding. Do you mean something like this?...

I have a 144px X 144px photo at 72ppi.
I want it to have 32 colors. (each pixel only contains 1 color) I want to basically *screen* the image so that a each single pixel square is surrounded by an empty(?) pixel space.
Am I close? If so, this is how I'd do it:

I would index my colors to 32; in this instance I'll choose Palette: Master Perceptual
Colors: 32
Forced: None
Dither: Noice (cause I like it better;)
(You could wait to index till the end of the process if you wish)

Now I create a pattern:
New Doc 2px X 2px @72ppi, transparent background.
I use the pencil tool, 1 px square and dot the upper right corner (or lower left I guess)
And define pattern

Return to my image, select all, copy, make new doc (transparent) Then fill new doc with my pattern
With wand set to 0 tolerance, antialias UNchecked, contigious UNchecked I select a solid pixel (which select all solid pixels) and Paste Into. Save however
Done
See: http://www.imagessence.com/imageviewer/spidey/

Am I close?
inez

In article <cvp1ni$blm$>,
".::[ikciu]::." wrote:

<snip>

Nope, you are wrong too. I need one pixel / shape has only one color - no more (exactly one).
Best solution for this is HALFTONE, but in this soultion i cant specify nuber of colors.

Ah, but you *can* halftone colour-separated files. Convert your file to CMYK and save each channel as a separate greyscale image. Then you can go Mode>Bitmap with the appropriate halftone options (IME silkscreeners usually like elliptical dots at 50-60 lpi). Use a resolution the same as the printer's for best results (preferably at least 1200 or 1270 ppi), and remember that each colour should be halftoned at a different angle to minimize moiré effects in the output.

--
Odysseus

I'm still curious how all this applies to a t-shirt? What kind of machine? Are you trying to output separations for screen printing or what? I'm just not understanding the reason for producing the points/pixels/dots within the PS document. I mean, the screen does that part, right? Or is it just an effect you're after?

inez

"iehsmith" wrote in message

I'm still curious how all this applies to a t-shirt?

There's something fishey going on. I suspect he's after something and feels that if he obscures it enough we won't know how simple the problem really is.

On 2/28/05 5:44 PM, jjs uttered:

There's something fishey going on. I suspect he's after something and feels that if he obscures it enough we won't know how simple the problem really is.

Well, I know someone on another list is trying to figure out how to do a composite for 25lpi screen (for a screen printing job) showing the dots for a proof. I couldn't figure out how to force the dots to output in composite. Any ideas? I think they were working/printing out of Illustrator. That might need a specialized PPD or script, huh?

inez

In article <BE48FE51.2D73C%>,
iehsmith wrote:

<snip>

Well, I know someone on another list is trying to figure out how to do a composite for 25lpi screen (for a screen printing job) showing the dots for a proof. I couldn't figure out how to force the dots to output in composite. Any ideas? I think they were working/printing out of Illustrator. That might need a specialized PPD or script, huh?

You can reassemble a set of four halftoned plates to get an approximate composite, going via multi-channel mode to CMYK, byt since they'd have to be converted to greyscale first it could make a humungous file. Of course you could downsample for proofing purposes, either the completed composite or each channel beforehand.

--
Odysseus

iehsmith wrote:

Well, I know someone on another list is trying to figure out how to do a composite for 25lpi screen (for a screen printing job) showing the dots for
a proof. I couldn't figure out how to force the dots to output in composite.
Any ideas?

Look at the following picture - just as a point of departure http://elearning.winona.edu/jjs/temp/rgb1.jpg
There are three different renderings in that picture.
Do any of them approximate what you are envisioning?

How, exactly, is 25lp rendered? Is it 24 line-pairs per inch, or 25 lines per inch? There is a difference.
In any event, count the dots in the picture.
It's done using a cross-hatched screen with 'rounded' apertures in all but one quadrant.

Other screens can be applied. I have a ton of this stuff.

--
jjs

http://elearning.winona.edu/jjs/temp/25lpi.gif

That one is about 25 dots per inch

On 3/1/05 3:46 PM, Odysseus uttered:

You can reassemble a set of four halftoned plates to get an approximate composite,

That's similar to what I suggested. It's not even process though, just 2 colors for screen printing, red & black. Since his separation screens come out fine I thought he could bring them into photoshop as 2 b&w layers (even just scanned as lineart, converting to rgb or cmyk), delete the white and color the red plate/layer.

But I think he was looking for a simple output/print solution for this to be able to use on a regular basis so his clients could see the color at the relevant dot size. Seems like there actually should be such a thing for screen print or signs where you could atleast view the dots in composite in a PDF, without going through contortions to get there.

jjs wrote:

How, exactly, is 25lp rendered? Is it 24 line-pairs per inch, or 25 lines per inch? There is a difference.

I have no idea. He said 25 lpi for large enough dots. He posted in the alt.graphics.illustrator group. I'm pasting parts of 2 messages below:

I make my screen directly from the laserprint. If the dot is too small then it will be smaller than the mesh of the screen and knock out all the emulsion on that portion of the screen. That would result in a solid rather than a halftone. I need a bigger dot in my halftone to make a screen.

.......

I am trying to create a logo for a guy with a very course lpi (25) because I am going to screen print it. I selected my PPD for my HP Laserjet 5 MP and designated a 25 lpi on both of the 2 colors (red and black). When I print out the images as seperations, the lpi setting is applied. When I print them as a composite, the lpi is not applied and it comes out at the printers max.
The black is process black and the red is a spot color. Any idea what I could do to make a composite proof with the course lpi?
Thanks muchly.