Structured Annotations for 2D-to-3D ModelingThank You Alex Rosmarin and the other artists Satoshi...
Transcript of Structured Annotations for 2D-to-3D ModelingThank You Alex Rosmarin and the other artists Satoshi...
![Page 1: Structured Annotations for 2D-to-3D ModelingThank You Alex Rosmarin and the other artists Satoshi Kako, Glenn Vilppu, the estate of Preston Blair, Chris Onstad, Kei Acedera (Imaginism](https://reader034.fdocuments.in/reader034/viewer/2022042122/5e9d2058dd22fe472f1bc498/html5/thumbnails/1.jpg)
Structured Annotations for 2D-to-3D ModelingYotam Gingold (New York University / JST ERATO)Takeo Igarashi (University of Tokyo / JST ERATO)Denis Zorin (New York University)
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Pencil and Paper Sketches
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Traditional Expert Systems
[Maya] [Mudbox]
[Thormälen and Seidel 2008]
Concept artwork plays no direct role
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Novice Systems ( )
Tedd
y [I
gara
shi e
t al
. 199
9]
Shap
eSho
p[S
chm
idt
et a
l. 20
05-8
]
See [Olsen et al. 2008] for a recent survey.
Fibe
rMes
h [N
eale
n et
al.
2007
]
Spor
e [M
axis
200
8]
Can’t trace a guide image
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Overview
Interface
Results & 2 User Studies
Implementation Details
Conclusion
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Inspiration
[Vilppu 1997]
[Bla
ir 1
994]
2D Drawing Approaches
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PrimitivesGeneralized Cylinders & Ellipsoids
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PrimitivesGeneralized Cylinders & Ellipsoids
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Primitives
Generalized Cylinder Ellipsoid
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Primitive: Generalized Cylinder
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Primitive: Generalized Cylinder
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Primitive: Ellipsoid
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Primitive: Ellipsoid
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Connection curve
Mirror
Alignment
AnnotationsSame-length
Same-tilt
Same-scale
z
y
z
y
=~
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Annotations: Connection Curves
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Annotations: Mirror
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Annotations: Alignment
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Annotations: Alignment
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Annotations: Same-length
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Annotations: Same-scale
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Annotations: Same-tilt
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Demo
Guide image [Vilppu 1997]
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Demo
Guide image [Vilppu 1997]
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Results
Guide images: [Blair 1994]; © Alex Rosmarin; © Kei Acedera, Imaginism Studios 2008; © Björn Hurri, www.bjornhurri.com; © Alex Rosmarin; © Alex Rosmarin; [Kako 1973]; [Kako 1973]
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Results
Guide images: [Blair 1994]; © Alex Rosmarin; © Kei Acedera, Imaginism Studios 2008; © Björn Hurri, www.bjornhurri.com; © Alex Rosmarin; © Alex Rosmarin; [Kako 1973]; [Kako 1973]
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2 User Studies
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Informal Study
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Informal Study
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Comparison Study
Create 3D model from this dog illustration
15 minutes of training
7 users, none had 3D modeling experience
Our system FiberMesh [Nealen et al. 2007]
vs.
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Comparison StudyFi
berM
esh
[Nea
len
et a
l. 20
07]
Our
sys
tem
preferred
avg:
31 m
ins
avg:
29 m
ins
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Implementation
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Implementation: Generalized Cylinder
t = 0
t = 1scale(t)
tilt(t)
• Parametric
•
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Implementation: Generalized Cylinder
• Parametric
• [Peng et al. 2004] to avoid self-intersections
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Implementation: Generalized Cylinder
• Parametric
• [Peng et al. 2004] to avoid self-intersections
![Page 38: Structured Annotations for 2D-to-3D ModelingThank You Alex Rosmarin and the other artists Satoshi Kako, Glenn Vilppu, the estate of Preston Blair, Chris Onstad, Kei Acedera (Imaginism](https://reader034.fdocuments.in/reader034/viewer/2022042122/5e9d2058dd22fe472f1bc498/html5/thumbnails/38.jpg)
Implementation: Annotations
• Annotations take precedence over primitives’ handles
• Annotations are mostly independent, so we apply them procedurally, not via optimization:
z
y
z
y
=~
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Implementation: Connection Curves
• Solve for depth offset between the two primitives
d
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Contributions
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Contributions
• Interface for modeling by “describing” an existing 2D image with primitives and annotations.
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Contributions
• Interface for modeling by “describing” an existing 2D image with primitives and annotations.
• Usable by novices, including those with poor drawing skills.
![Page 43: Structured Annotations for 2D-to-3D ModelingThank You Alex Rosmarin and the other artists Satoshi Kako, Glenn Vilppu, the estate of Preston Blair, Chris Onstad, Kei Acedera (Imaginism](https://reader034.fdocuments.in/reader034/viewer/2022042122/5e9d2058dd22fe472f1bc498/html5/thumbnails/43.jpg)
Contributions
• Interface for modeling by “describing” an existing 2D image with primitives and annotations.
• Usable by novices, including those with poor drawing skills.
• Resulting model is structured and contains semantic information.
![Page 44: Structured Annotations for 2D-to-3D ModelingThank You Alex Rosmarin and the other artists Satoshi Kako, Glenn Vilppu, the estate of Preston Blair, Chris Onstad, Kei Acedera (Imaginism](https://reader034.fdocuments.in/reader034/viewer/2022042122/5e9d2058dd22fe472f1bc498/html5/thumbnails/44.jpg)
Contributions
• Interface for modeling by “describing” an existing 2D image with primitives and annotations.
• Usable by novices, including those with poor drawing skills.
• Resulting model is structured and contains semantic information.
• Naturally provide a complete 2D visualization of the 3D model and its structure.
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Limitations
[Sch
mid
t et
al.
2009
b]
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Limitations
• Limited range of models [Sch
mid
t et
al.
2009
b]
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Limitations
• Limited range of models
• Can’t be used for certain drawings
[Sch
mid
t et
al.
2009
b]
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Limitations
• Limited range of models
• Can’t be used for certain drawings
• No cycles of connection curves
[Sch
mid
t et
al.
2009
b]
![Page 49: Structured Annotations for 2D-to-3D ModelingThank You Alex Rosmarin and the other artists Satoshi Kako, Glenn Vilppu, the estate of Preston Blair, Chris Onstad, Kei Acedera (Imaginism](https://reader034.fdocuments.in/reader034/viewer/2022042122/5e9d2058dd22fe472f1bc498/html5/thumbnails/49.jpg)
Future Work
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Future Work
• More primitives and annotations
![Page 51: Structured Annotations for 2D-to-3D ModelingThank You Alex Rosmarin and the other artists Satoshi Kako, Glenn Vilppu, the estate of Preston Blair, Chris Onstad, Kei Acedera (Imaginism](https://reader034.fdocuments.in/reader034/viewer/2022042122/5e9d2058dd22fe472f1bc498/html5/thumbnails/51.jpg)
Future Work
• More primitives and annotations
• Use the underlying guide image [Tsang et al. 2004]
![Page 52: Structured Annotations for 2D-to-3D ModelingThank You Alex Rosmarin and the other artists Satoshi Kako, Glenn Vilppu, the estate of Preston Blair, Chris Onstad, Kei Acedera (Imaginism](https://reader034.fdocuments.in/reader034/viewer/2022042122/5e9d2058dd22fe472f1bc498/html5/thumbnails/52.jpg)
Future Work
• More primitives and annotations
• Use the underlying guide image [Tsang et al. 2004]
• Different camera models
![Page 53: Structured Annotations for 2D-to-3D ModelingThank You Alex Rosmarin and the other artists Satoshi Kako, Glenn Vilppu, the estate of Preston Blair, Chris Onstad, Kei Acedera (Imaginism](https://reader034.fdocuments.in/reader034/viewer/2022042122/5e9d2058dd22fe472f1bc498/html5/thumbnails/53.jpg)
Future Work
• More primitives and annotations
• Use the underlying guide image [Tsang et al. 2004]
• Different camera models
• Comprehensive user study
![Page 54: Structured Annotations for 2D-to-3D ModelingThank You Alex Rosmarin and the other artists Satoshi Kako, Glenn Vilppu, the estate of Preston Blair, Chris Onstad, Kei Acedera (Imaginism](https://reader034.fdocuments.in/reader034/viewer/2022042122/5e9d2058dd22fe472f1bc498/html5/thumbnails/54.jpg)
Thank YouAlex Rosmarin and the other artists
Satoshi Kako,Glenn Vilppu,the estate of Preston Blair,Chris Onstad,Kei Acedera (Imaginism Studios),Björn Hurri (www.bjornhurri.com)
User testers
[email protected]://cs.nyu.edu/~gingold/annotations/
![Page 55: Structured Annotations for 2D-to-3D ModelingThank You Alex Rosmarin and the other artists Satoshi Kako, Glenn Vilppu, the estate of Preston Blair, Chris Onstad, Kei Acedera (Imaginism](https://reader034.fdocuments.in/reader034/viewer/2022042122/5e9d2058dd22fe472f1bc498/html5/thumbnails/55.jpg)
End