Shape Matching and Object Recognition Using Shape Contexts
IEEE Transactions on Pattern Analysis and Machine Intelligence
"GrabCut": interactive foreground extraction using iterated graph cuts
ACM SIGGRAPH 2004 Papers
UIST '06 Proceedings of the 19th annual ACM symposium on User interface software and technology
Generating photo manipulation tutorials by demonstration
ACM SIGGRAPH 2009 papers
Analytic drawing of 3D scaffolds
ACM SIGGRAPH Asia 2009 papers
EverybodyLovesSketch: 3D sketching for a broader audience
Proceedings of the 22nd annual ACM symposium on User interface software and technology
iCanDraw: using sketch recognition and corrective feedback to assist a user in drawing human faces
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Contour Detection and Hierarchical Image Segmentation
IEEE Transactions on Pattern Analysis and Machine Intelligence
ShadowDraw: real-time user guidance for freehand drawing
ACM SIGGRAPH 2011 papers
MeshFlow: interactive visualization of mesh construction sequences
ACM SIGGRAPH 2011 papers
Sketch-sketch revolution: an engaging tutorial system for guided sketching and application learning
Proceedings of the 24th annual ACM symposium on User interface software and technology
Transactions on Edutainment III
ACM Transactions on Graphics (TOG) - SIGGRAPH 2012 Conference Proceedings
I don't believe my eyes!: geometric sketch recognition for a computer art tutorial
Proceedings of the International Symposium on Sketch-Based Interfaces and Modeling
ACM Transactions on Graphics (TOG) - Proceedings of ACM SIGGRAPH Asia 2012
MixT: automatic generation of step-by-step mixed media tutorials
Proceedings of the 25th annual ACM symposium on User interface software and technology
Real-time drawing assistance through crowdsourcing
ACM Transactions on Graphics (TOG) - SIGGRAPH 2013 Conference Proceedings
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We present an interactive drawing tool that provides automated guidance over model photographs to help people practice traditional drawing-by-observation techniques. The drawing literature describes a number of techniques to %support this task and help people gain consciousness of the shapes in a scene and their relationships. We compile these techniques and derive a set of construction lines that we automatically extract from a model photograph. We then display these lines over the model to guide its manual reproduction by the user on the drawing canvas. Finally, we use shape-matching to register the user's sketch with the model guides. We use this registration to provide corrective feedback to the user. Our user studies show that automatically extracted construction lines can help users draw more accurately. Furthermore, users report that guidance and corrective feedback help them better understand how to draw.