PenandInk Illustration

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Pen-and-Ink Illustration
Salisbury, M., Wong, M., Hughes, J., Salesin,
D. Orientable textures for image-based
pen-and-ink illustration In Computer Graphics
(SIGGRAPH 97), 401-406 (1997)
March 18, 2003 Sung Yong SHIN Computer Science
Div.
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An interactive system for creating pen-and-ink
line drawing from greyscale images with
orientable textures

• Interactive system
• Output pen-and-ink line drawing
• Input greyscale images
• How ? Orientable textures !!!

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Orientable Textures

• Conveying not only textures and tones but also
  orientations of the 3D forms of surfaces.
• Strokes procedurally generated (not tiled)
  guided by importance ?incrementally generated
• Oriented by a direction field

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How to edit tone, direction field, and sample
strokes How to generate an illustration -
Matching the illustration to the target -
Drawing strokes in the right place - Rendering
strokes