Interactive Techniques

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Interactive Techniques
Haeberli, P. Paint by numbers Abstract image
representation In Computer Graphics
(SIGGRAPH90), pp.207-214 (1990)
April 16, 2003 Sung Yong SHIN Computer Science
Div.
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An interactive tool for converting an image
(picture) into a picture of impressionistic style
- interactive - image-space (2D) touching a
little bit of 3D flavor - ordered collection of
brush strokes
How to effectively convey visual information
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Sampling visual information
Random sampling guided by users features
shape, silhouette, curvature, lighting depth
relationship among objects
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Stroke representation
location color size direction shape
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Simple painting techniques Operations on
painting perturbation on stroke attributes,
stroke interpolation Advance
techniques brush directions, texture
mapping Spice for images (preprocessing) - edge
pushing - saturation - color distribution (by
adding noise) - color quantization -
background Geometry sampling Relaxation
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Seminal work for NPR Window systems Popularity
on painting/drawing tools Photo-realism ? NPR