JeanJacques Bourdin

1
Improved Rendering with Dégradé

• Jean-Jacques Bourdin
• Vincent Boyer
• Dominique Sobczyk
• Laboratoire Intelligence Artificielle
• Université Paris 8

2
In Traditional Tools You

• Create the object
• Fill the object
• Render the object

3
Artistic Composition

• Object Filling Rendering

4
Artistic Composition 2
Monet Woman with parasol (facing right)
5
Artistic Composition 3
Van Rysselberghe Lhomme à la barre
6
Artistic Composition 4
Van Gogh Eglise dAuvers
7
Artistic Composition 5
8
Our Solution

• Merge Filling and rendering

9
The model

• A region
• A map from pixels to index
• A map from index to color

10
Definition of a Region

• Pixel P(x,y)
• 4-connected neighbours

11
Definition of a Region 2
12
Inner Shape Function
13
A chromatic function
14
Effect Filters

• Shading (smooth, bilinear, bézier-like,)
• Gradient effect
• Water-Color effect
• Local modification effect

15
Linear interpolation
16
Bilinear interpolation
17
Bézier-like interpolation
18
Gradients
19
Local modification
20
Image transformation
21
WaterColor-like effect
22
Impressionnist-like effect
23
Details
24
Rendering different objects
25
Conclusion

• Filling rendering
• Easily vectorisable
• Easier work for graphic designers
• Enhance possibilities

26
Future Works

• Enhance objects creation (see Metaprogramming
  Language for object creation, Vincent Boyer,
  EG01)
• Improve effects