Ani Abakumova employs an algorithm to develop a pattern for portraits that she then strings together by hand. The algorithm, developed by Abakumova’s husband Andrey, configures the layers, colors and specific depiction. When Abakumova assembles it all, she follows the math’s lead and trusts that it has accounted for shadowing, shape and depth. For each portrait—she’s replicated the “Mona Lisa,” “Girl with a Pearl Earring” and more—there are 8,000+ lines of thread, or roughly 4+ kilometers. Learn more at designboom.