Accurate Binary Image Selection from Inaccurate User Input
Kartic Subr, Sylvain Paris, Cyril Soler, Jan Kautz
In Computer Graphics Forum, 32(2pt1), 2013.
Abstract: Selections are central to image editing, e.g., they are the starting point of common operations such as copy-pasting and local edits. Creating them by hand is particularly tedious and scribble-based techniques have been introduced to assist the process. By interpolating a few strokes specified by users, these methods generate precise selections. However, most of the algorithms assume a 100% accurate input, and even small inaccuracies in the scribbles often degrade the selection quality, which imposes an additional burden on users. In this paper, we propose a selection technique tolerant to input inaccuracies. We use a dense conditional random field (CRF) to robustly infer a selection from possibly inaccurate input. Further, we show that patch-based pixel similarity functions yield more precise selection than simple point-wise metrics. However, efficiently solving a dense CRF is only possible in low-dimensional Euclidean spaces, and the metrics that we use are high-dimensional and often non-Euclidean. We address this challenge by embedding pixels in a low-dimensional Euclidean space with a metric that approximates the desired similarity function. The results show that our approach performs better than previous techniques and that two options are sufficient to cover a variety of images depending on whether the objects are textured.
@article{Subr:2013:ABI,
author = {Kartic Subr and Sylvain Paris and Cyril Soler and Jan Kautz},
title = {Accurate Binary Image Selection from Inaccurate User Input},
journal = {Computer Graphics Forum},
volume = {32},
number = {2pt1},
pages = {41--50},
year = {2013},
}
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