Turn any photo into a dot grid artwork with these Photoshop actions. You'll get great results with dots that change size. They get larger in brighter areas and smaller in darker areas. Free download available.
Step 1Open a photo you would like to edit. Or, you may use the photo used in this tutorial (from iStockPhoto). Make sure that the image is in RGB color mode. To switch to RGB color mode, click on RGB Color under the Image> Mode menu.
Step 2Duplicate the current layer (Layer> Duplicate Layer or Ctrl+J).
Step 3Select the top layer and apply a Median filter (Filter> Noise> Median). In the Median filter tool, use a Radius that will blur most of the detail without losing the shape of the objects.
Filtering the EffectThe effect is applied, but it's applied to the entire image. Now we need to filter it so that it's not applied on the edges.
Step 4Add a layer mask to the top layer (Layer> Add Layer Mask> Reveal All).
Step 5Make sure the layer mask is activated. The thumbnail of the layer mask in the layers window should have a white border around it. If it doesn't, click on the thumbnail to activate the layer mask.
Step 6With the layer mask activated, use the Apply Image tool to apply the following properties: Layer: Background Channel: RGB Blending: Normal Opacity: 100%
Step 7Apply a Find Edges filter (Filter> Stylize> Find Edges). The image should now appear to have its edges restored.
Step 8If you look closely at the image, you'll be able to notice the outline on the edges. To remove this, we'll simply apply a gaussian blur with a radius of 1 pixel.
Rollover to see the before and after effect.