Mosaic - how limit/set colors Pixel & size

Hello

I am trying to create a mosaic from a photograph

Want to make 3mm square pixel size (when printing) and limit the range of colors in the colors of 7 or more (white/black to shades of blue in the middle and the extremes). Juggle with the size of the image seems to adjust the size of PIxel - enlarge the overall picture in terms of 'cm', but the image doesn't seem to be larger on the screen.

FYI will use print as a "guide to support" for the construction of the mosaic. Is there a 'best' approach to use when you print very large images - in photoshop or another app/plugin?

Either had some progress with the colors using grayscale or black & white - though, in trying to use "replace color" for my desired gray scale etc., it doesn't seem to change the color of a pixel to a different shade of gray - rather than one of the blue shadows

Any suggestions on the best way to approach the aspects of color and pixelate/mosaic of color?  Seems to be a lot of different alternatives

  • Color: posterise, gray levels, replace color, indexed, colors black and white etc.
  • Mosaic: Mosaic Image size, pixelation, etc.

So many choices - I'm a little stuck on the part of color...  Thanks in advance

See you soon

Understand the final image size and how much 3mm square you want for the height and width. crop or reduce your image size in pixels. Speed of image in your print size using nearest neighbor. This will create the correct number of 3mm squares. To force the colors, use Index color with a custom color table. Once you do this, you'll want to convert to RGB for printing and any other work you want to do with the image.

Tags: Photoshop

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