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This grainy heatmap effect gives a photo an abstract, retro vibe with its ultra-bright colours that resemble thermal imaging. In this tutorial I’ll show you how to create it using three examples, each with a different colour scheme. First we'll convert the photo with a gradient map to generate the surreal colours, then the addition of some blur and grainy filters really helps to enhance the effect. Then to finish off the piece we'll add some of my
free texture downloads from Spoon Graphics.
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