Decomposing Time-Lapse Paintings into Layers

Jianchao Tan
George Mason University
 
Marek Dvorožňák
CTU in Prague, FEE
Daniel Sýkora
CTU in Prague, FEE
 
Yotam Gingold
George Mason University



Abstract

The creation of a painting, in the physical world or digitally, is a process that occurs over time. Later strokes cover earlier strokes, and strokes painted at a similar time are likely to be part of the same object. In the final painting, this temporal history is lost, and a static arrangement of color is all that remains. The rich literature for interacting with image editing history cannot be used. To enable these interactions, we present a set of techniques to decompose a time lapse video of a painting (defined generally to include pencils, markers, etc.) into a sequence of translucent "stroke" images. We present translucency-maximizing solutions for recovering physical (Kubelka and Munk layering) or digital (Porter and Duff "over" blending operation) paint parameters from before/after image pairs. We also present a pipeline for processing real-world videos of paintings capable of handling long-term occlusions, such as the painterís hand and its shadow, color shifts, and noise.

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ACM Transactions on Graphics 34(4):61, 2015

(SIGGRAPH 2015, Los Angeles, USA, August 2015)

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