Performance Evaluation of Graphics Recognition Systems, Current Investigations

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Performance Evaluation of Graphics Recognition
SystemsCurrent investigations .

• Mathieu Delalandre
• Meeting of Document Analysis Group
• Computer Vision Center
• Barcelona, Spain
• Wednesday 17th April 2007

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Past Works (1/2)Building of Synthetic Graphic
Document
Object Building
System Overview
Object Positioning
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Past Works (2/2)Building of Synthetic Graphic
Document
Object Positioning
4000 documents 160 000 symbols
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Current Works (1/4)Graphics Model Enhancement
Introduction
Vector Graphics Editor
Model Enhancement
(1) Vectorial distortion
(2) Learning of structural based methods
(3) Hand sketch characterisation
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Model in vector graphics form
Line graph
Well rendering !
Well structured !
l2
l1
layer
float space
heterogeneous objects
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Current Works (2/4)Graphics Model Enhancement
Shape Intersecting
System Overview
Object Model
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Current Works (3/4)Graphics Model Enhancement
Crossing /Touching
Shape to Shape Touching
Shape / Line Model
Touching Threshold
(1)
(2)
(3)
Line to Shape Touching
Crossing
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Current Works (4/4)Graphics Model Enhancement
Linking