Illustrative Rendering in

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Character Design Goals• Easily visible against environment• Characters must be readable quickly by other players• Communicate shape via shading and silhouetteunder all lighting conditions© 2007 Valve Corporation. All Rights Reserved.
Gooch, 1998• Hue and luminance shifts indicate surfaceorientation relative to light• Blend between warm and cool based uponunclamped Lambertian term, underlying albedoand some free parameters• Extreme lights and darks are reserved for edgelines and highlightsConventionalShadingGoochShading⎛⎜⎝1212( )⎞( )⎛( )⎞nˆ⋅lˆ+ ⎟ k + α k + ⎜1−⎜ nˆ⋅lˆ+ ⎟⎟( k + βk)⎠blued⎛⎝⎝121 ⎞2 ⎠⎠yellowd© 2007 Valve Corporation. All Rights Reserved.
Page 1 and 2: IllustrativeRendering inTeam Fortre
Page 3 and 4: Team Fortress 2• Class-based mult
Page 5 and 6: Contrasting Team Properties• Red
Page 7 and 8: Red base in 2fort map© 2007 Valve
Page 9 and 10: Miyazaki - Brush Width Foreshortene
Page 11: © 2007 Valve Corporation. All Righ
Page 15 and 16: Barla, 2006• Barla has extended t
Page 17 and 18: Rim HighlightsRed TerminatorJ.C. Le
Page 19 and 20: Engineer Concept© 2007 Valve Corpo
Page 21 and 22: Rim Highlighting: After© 2007 Valv
Page 23 and 24: Character Lighting EquationView ind
Page 25 and 26: kdView Independent Terms⎡⎢a⎣L
Page 33 and 34: L∑i=1View-dependent Terms[ c k ma
Page 51 and 52: Future Work• More flexible specul
Page 57: Conclusion• Motivations and relat

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