6/23/15, 3:05 PMMosaic Image Eect in Photoshop | Photo Editing

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Mosaic Image Effect in Photoshop1. Open your image in Photoshop. Double click on the background layer. Rename it Dots1.

2. Make new layer, press D (change foreground and background colors to default) andgo to Layer > New > Background From Layer. This should result in backgroundlayer filled with white color.

3. Select Dots 1 and go to Filter > Pixelate > Mosaic... In filter dialog box choose cellsize big enough to produce a grid of approximately 20-30 squares in a row.

My image is 500 px by 300 px and I chose cell size of 20 px for it. You can figure out theoptimal cell size for your image by dividing width of your image in pixels by 20, 25 or 30,depending on how detailed your image is and on the density of dots you like. Try to getnumber without fractions. In my example it's 500 px / 25 = 20 px cell size. Write downthis number, I will refer to it later as cell size. Click OK.

4. Now we'll make a dot pattern. Create a new document (Ctrl + N) with width andheight equal to your cell size (20 px in my case). Select all (Ctrl +A) and fill backgroundlayer with black color. Deselect (Ctrl + D).

5. Select Elliptical Marquee Tool. In Options bar choose Style: Fixed size. In Width andHeight boxes type in the same amount - it should be a slightly less then your cell size, sothe circles won't touch. In my example I typed 18 px. Leave Feather option to 0px and

6/23/15, 3:05 PMMosaic Image Eect in Photoshop | Photo Editing

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Anti-aliased checked. Click on background layer. This will result in circle selection in thesize that you specified in Options bar. Use arrow keys to align your circle selection in thecenter of the document.

6. In layers palette click on New Layer button. Fill selection with white color. Select all(Ctrl + A) and go to Edit > Define pattern.

7. Return to your mosaic image document. Add mask to Dots 1 layer. Make sure mask isselected. Select all and fill selection with our new dot pattern. Ctrl + D to deselect.

We can stop right here because we already got a nice dotted mosaic image. But we canadd more details to push it even farther.

8. Duplicate Dots 1 layer and rename it Dots 2. Delete layer mask. Adjust this layerslightly using Brightness/Contrast, Hue/Saturation, Levels or anything else you like. Iadjusted Brightness +10 and Contrast +20.

9. Repeat steps 4 through 7 but use smaller circles size.

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10. You can add a couple of more layers with different circle sizes.

In my example

Dots 1 - original colors, circle size is 18 px; Dots 2 - duplicate Dots 1; Layer > Adjustments > Brightness/Contrast(Brightness +10, Contrast +20); circle size is 14 px; Dots 3 - duplicate Dots 1; Layer > Adjustments > Hue/Saturation (Saturation+25); circle size is 10 px; Dots 4 - duplicate Dots 1; Layer > Adjustments > Hue/Saturation (Saturation +35and Lightness -5); circle size is 4 px.

Take a look how to achieve the same effect in Illustrator.