We propose a new image processing problem that consists in approximating an input image with a set of plastic bottle caps. This problem is motivated by the appreciation caused by low resolution imaging, combined with the goal of finding a new destination for plastic caps that would be discarded and possibly damage the environment. Our solution consists in formulating an energy that measures how well a bottle cap art reproduces structures and features from the reference image and maximizing it with a simulated annealing strategy. Examples in the paper show that our method produces high quality results in this very low spatial and color resolution setting. (C) 2022 Elsevier Ltd. All rights reserved.
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