Computational geometry in C
Computer-generated pen-and-ink illustration
SIGGRAPH '94 Proceedings of the 21st annual conference on Computer graphics and interactive techniques
Interactive pen-and-ink illustration
SIGGRAPH '94 Proceedings of the 21st annual conference on Computer graphics and interactive techniques
Proceedings of the 26th annual conference on Computer graphics and interactive techniques
Halftoning with image-based dither screens
Proceedings of the 1999 conference on Graphics interface '99
Fast Approximate Energy Minimization via Graph Cuts
IEEE Transactions on Pattern Analysis and Machine Intelligence
NPAR '02 Proceedings of the 2nd international symposium on Non-photorealistic animation and rendering
Computer Vision
Human facial illustrations: Creation and psychophysical evaluation
ACM Transactions on Graphics (TOG)
ACM SIGGRAPH 2004 Papers
"GrabCut": interactive foreground extraction using iterated graph cuts
ACM SIGGRAPH 2004 Papers
An Experimental Comparison of Min-Cut/Max-Flow Algorithms for Energy Minimization in Vision
IEEE Transactions on Pattern Analysis and Machine Intelligence
Two-scale tone management for photographic look
ACM SIGGRAPH 2006 Papers
ACM SIGGRAPH 2006 Papers
A comparative study of energy minimization methods for markov random fields
ECCV'06 Proceedings of the 9th European conference on Computer Vision - Volume Part II
On the optimality of solutions of the max-product belief-propagation algorithm in arbitrary graphs
IEEE Transactions on Information Theory
Stylized depiction of images based on depth perception
NPAR '10 Proceedings of the 8th International Symposium on Non-Photorealistic Animation and Rendering
Towards artistic minimal rendering
NPAR '10 Proceedings of the 8th International Symposium on Non-Photorealistic Animation and Rendering
Automated hedcut illustration using isophotes
SG'10 Proceedings of the 10th international conference on Smart graphics
Extended papers from NPAR 2010: Non-photorealistic, depth-based image editing
Computers and Graphics
XDoG: advanced image stylization with eXtended Difference-of-Gaussians
Proceedings of the ACM SIGGRAPH/Eurographics Symposium on Non-Photorealistic Animation and Rendering
Special Section on CANS: Op Art rendering with lines and curves
Computers and Graphics
Artistic minimal rendering with lines and blocks
Graphical Models
Non-photorealistic rendering with spot colour
Proceedings of the Symposium on Computational Aesthetics
Simple art as abstractions of photographs
Proceedings of the Symposium on Computational Aesthetics
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Halftoning algorithms attempt to match the tone of an input image despite lower color resolution in the output. However, in some artistic media and styles, tone matching is not at all the goal; rather, details are either portrayed sharply or omitted entirely. In this paper, we present an algorithm for abstracting arbitrary input images into black and white images. Our goal is to preserve details while as much as possible producing large regions of solid color in the output. We present two methods based on energy minimization, using loopy belief propagation and graph cuts, but it is difficult to devise a single energy term that both sufficiently promotes coherence and adequately preserves details. We next propose a third algorithm separating these two concerns. Our third algorithm involves composing a base layer, consisting of large flat-colored regions, with a detail layer, containing the small high-contrast details. The base layer is computed with energy minimization, while local adaptive thresholding gives the detail layer. The final labeling is tidied by removing small components, vectorizing, and smoothing the region boundaries. The output images satisfy our goal of high spatial coherence with detail preservation.