Soccer - Vision at IME-USP

Soccer
Game intelligence
Junior Barrera
IME-USP
1

Layout
• Introduction
• Goal keeper
• Soccer game model
• Example
• Game evaluation and design
• Future works
2

Layout
• Introduction
• Goal keeper
• Soccer game model
• Example
• Game evaluation and design
• Future works
3

Rodrigo
4

2,40
7,20
7

Layout
• Introduction
• Goal keeper
• Soccer game model
• Example
• Game evaluation and design
• Future works
8

The problem
Avoid that the ball crosses the goal line
Solution
- Defending attacks
- Avoiding attacks
- defensive actions
- offensive actions
9

The proposed technique
- Dictionary of actions
- Taxonomy of keeper action sequences
- Prediction and decision rules
10

Goal keeper
- Dictionary of actions
- Taxonomy of keeper action sequences
- Prediction and decision rules
11

Dictionary of actions
• Ready
• Motion
• Catch
• Cut
• Close and break
• Ball pass
12

Dictionary of actions
• Ready
• Motion
• Catch
• Cut
• Close and break
• Ball pass
13

Low ready position
Facilitate lateral jumps
14

High ready position
Facilitate vertical jumps
15

High ready: crosses
16

Dictionary of actions
• Ready
• Motion
• Catch
• Cut
• Close and break
• Ball pass
17

Lateral walk
18

Ahead walk
19

Dictionary of actions
• Ready
• Motion
• Catch
• Cut
• Close and break
• Ball pass
20

Low slow catch
21

Low fast catch
22

Low fast catch
23

Low meddle catch
24

High meddle catch
25

High catch
26

Low lateral
catch
27

High lateral
catch
28

Dictionary of actions
• Ready
• Motion
• Catch
• Cut
• Close and break
• Ball pass
29

Dictionary of actions
• Ready
• Motion
• Catch
• Cut
• Close and break
• Ball pass
32

Ahead walk
33

Close: stay in front of the player that has the ball
34

Lose balls on the grass
35

Lose balls on the grass
36

Dictionary of actions
• Ready
• Motion
• Catch
• Cut
• Close and break
• Ball pass
37

•.
40

Goal keeper
- Dictionary of actions
- Taxonomy of keeper action sequences
- Prediction and decision rules
43

Taxonomy of action sequences
• Goal shots
• Covering
• Close and break
• Defense organization
• Ball repositions
44

Taxonomy of actions sequence
• Goal shots
• Covering
• Close and break
• Defense organization
• Ball repositions
45

Straight line shots
46

A straight line shot
47

Meddle line
Goal reduction
48

Goal reduction
49

Diagonal shot
Diagonal meddle line
Center correction
50

Straight line kicking shots
51

Foot does not make an up movement
52

Parabolic shots
55

Parabolic kicking shot
Foot makes an up movement
56

Curve shots
59

Faults
Defenders line
62

Frontal faults
Defenders line
63

Defenders line
Diagonal faults
Center correction
64

Analysis, prediction and
decision rules
• Goal shots
• Covering
• Close and break
• Defense organization
• Ball repositions
65

Covering the defense
means
arriving to the ball before any other player
- Protecting balls that will go out
- “breaking” lose balls on the grass
- Catching or socking high balls
- Footing balls (in limit situations)
66

Slow balls
or
dead zone balls
67

Center correction
1.A
68

Center correction
1.B
69

Center correction
1.C
70

Defending back attacks
71

Keeper
Defense
Attack
Ball
1A
72

1B
73

1C
74

1D
75

1E
76

Crosses
77

Corner
78

Short Cross: interception
79

Analysis, prediction and
decision rules
• Goal shots
• Covering
• Close and break
• Defense organization
• Ball repositions
80

2A
81

Analysis, prediction and
decision rules
• Goal shots
• Covering
• Close and break
• Defense organization
• Ball repositions
82

Analysis, prediction and
decision rules
• Goal shots
• Covering
• Close and break
• Defense organization
• Ball repositions
84

1.A
85

1.B
86

1.C
87

Goal keeper
- Dictionary of actions
- Taxonomy of keeper action sequences
- Prediction and decision rules
88

Prediction and decision rules
- Predict the next game movements
- Choose a sequence of dictionary
actions based on his prediction
89

Shot positions
90

Base point
Base line
91

Low advanced points
Law lateral points
92

Advanced points
Lateral points
93

Positioning
Always move to the right position before a shot
94

Lateral walk
1.A
95

Lateral walk
Keeper
Defense
Attack
Ball
1.B
96

Lateral walk
Keeper
Defense
Attack
Ball
1.C
97

Radial walk
1.A
98

Radial walk
1.B
99

Non Radial
walk
1.A
100

Non Radial
walk
1.B
101

Non Radial
walk
Faster, but less precise
than the radial walh
1.B
102

Approximate position
103

Non radial walk:
occlusion
2A
104

Non radial walk:
occlusion
2B
105

What is the right keeper
position to defend a shot
106

Depends on shot type
• Straight line
- advance on the meddle line or diagonal meddle line
• Parabolic
- stay on the meddle line near the meddle position
• Curve
- stay on the meddle line near the meddle position
107

How to predict a straight line,
a parabolic, or a curve shot
108

Straight Line Shots
• Balls on the grass
- when the player is pressed
- most common, because it requires less ability
- in case of doubt, it should be your choice
• Kicking balls
- when the foot does not make an up movement
109

Parabolic Shots
• Balls on the grass
- when the player is not pressed
- it requires some ability
- knowledge about the player would help
• Kicking balls
- when foot makes an up movement
- the most common shot
110

Curve Shots
• Balls on the grass
- when the player is not pressed
- requires a lot of ability
- knowledge about the player would help
• Kicking balls
- only in occasional shots
111

Faults
112

1
2
3
4
5
0
4
3
1
2
Men in the defenders line and shot angle
113

Diagonal Faults
• Balls above defenders line
- left lateral movement
• Parabolic balls beside defenders line
- right lateral movement
• Straight line balls beside defenders line
- diagonal movement
114

Defending back attacks
115

Basic cover position
116

Crosses
117

Corner: closed cross
118

Corner: opened cross
119

Long Cross
Same position and movement of corners
120

Corner
121

Short Cross
122

Short Cross: interception
123

Close and break
124

Unconditional
close zone
125

Conditional
close zone
126

Close
• Player in the unconditional close zone
- always make a close
• Player in the conditional close zone
- close just if there is a single adversary
- pay attention with kicking balls
127

Break
When ball is a bit far from the player make
a break instead of a close
128

Defense organization
129

Preventing back attacks
130

Wrong
131

Wrong
132

Right
133

Repositioning
134

Wrong
135

Right
136

Corners
137

Corner defense position
Ball men
138

Corner defense position
Players men
139

Open corner position
140

Closed corner position
141

Crosses
142

Keeper action zone
143

Keeper action zone
144

Off side
145

1.A
146

1.B
147

OUT
1.C
148

OUT
1.D
149

OUT
1.E
150

Keeper action zone 2.A
151

OUT
Keeper action zone
2.B
152

Keeper action zone 2.C
153

Keeper action zone 2.D
154

Ball reposition
155

156

1.A
157

1.B
158

1.C
159

160

2 A
161

2 B
162

2.C
163

•.
164

3.A
165

3.B
166

3.C
167

168

4.A
169

4.A
170

4.A
171

4.A
172

4.A
173

174

5.A
175

5.A
176

5.A
177

Application of the rules
178

Ball on the grass and
player running alone,
break
Ball kicking, be careful.
1.A
179

Ball on the grass and
player running alone,
break
Ball kicking, be careful.
1.B
180

Ball on the grass and
player running alone,
break
Ball kicking, be careful.
1.C
181

Ball on the grass and
player running alone,
break
Ball kicking, be careful.
1.D
182

Ball on the grass and
player running alone,
break
Ball kicking, be careful.
1.E
183

Ball on the grass and
player low pressed,
break
Ball kicking, stay a bit
more on the base line
2.A
184

Ball on the grass and
player low pressed,
break
Ball kicking, stay a bit
more on the base line
2.B
185

Ball on the grass and
player low pressed,
break
Ball kicking, stay a bit
more on the base line
2.C
186

Defender recovered,
comeback to the base line
Ball kicking, stay on the
base line
3A
187

Defender recovered,
comeback to the base line
Ball kicking, stay on the
base line
3.B
188

Defender recovered,
comeback to the base line
Ball kicking, stay on the
base line
3.C
189

Defender recovered,
comeback to the base line
Ball kicking, stay on the
base line
3.D
190

Defender recovered,
comeback to the base line
Ball kicking, stay on the
base line
3.E
191

Ball on the grass and
player not pressed
Ball kicking, stay on the
base line
4.A
192

Ball on the grass and
player not pressed
Ball kicking, stay on the
base line
4.B
193

Ball on the grass and
player not pressed
If the player look,
comeback
Ball kicking, stay on the
base line
5 C
194

Ball on the grass and
player not pressed
If the player look,
comeback
Ball kicking, stay on the
base line
4.D
195

Ball on the grass and
player not pressed
If the player run,
close or break
Ball kicking, stay on the
base line
4.E
196

Ball on the grass and
player not pressed
If the player run,
close or break
Ball kicking, stay on the
base line
4.F
197

Ball on the grass and
player not pressed
Ball kicking, stay on the
base line
5.A
198

Ball on the grass and
player not pressed
Ball kicking, stay on the
base line
5 B
199

Ball on the grass and
player not pressed
Ball kicking, stay on the
base line
5.C
200

Ball on the grass and
player not pressed
Ball kicking, stay on the
base line
5.D
201

Layout
• Introduction
• Goal keeper
• Soccer game model
• Example
• Game evaluation and design
• Future works
202

A sequence of Continuous Stochastic Dynamical
Systems
State at t: 3D position of players and ball on
the field at time t.
Interruption: referee break.
output: score
After each interruption the score is updated,
the initial conditions are reset, and the system
may be modified.
203

System Dynamics
• Player is an autonomous system
• Team is a set of players
• Game: one team plays against other
• Team objective in a game: make goals
and avoid adversary goals
204

System characterization
• Player ability: dictionary of actions and
capability of executing it
• Player strategy: prediction of next events
and planning of corresponding action
sequences
205

System modeling
• Dictionary action: stochastic dynamical systems
(Markov chains) – discrete or hybrid
• Player strategy
- prediction: conditional distribution,
P(fact | system state)
- planning: mapping of a fact in a sequence of
dictionary actions
206

Layout
• Introduction
• Goal keeper
• Soccer game model
• Example
• Game evaluation and design
• Future works
207

Goal keeper
strategy
Prediction
Planning
Positioning
Ready Catch Close
Break Talk Ball pass
208

Goal keeper strategy
Dynamical simulation
Shot defense
Prediction
Planning
Positioning
Ready Catch Close
Break Talk Ball pass
209

Layout
• Introduction
• Goal keeper
• Soccer game model
• Example
• Game evaluation and design
• Future works
210

• Game tactics attractors of the stochastic
dynamical system that represents the
game
• Team tactics attractors of the stochastic
dynamical subsystem that represents the
team
211

Example
3-5-2 4-3-3
5
9
7
4
3
7
8
2
2
10
9
10
4
8
5
3
6
11
11
6
212

3-5-2 Dynamical Tactics
213

5
9
3
7
2
10
4
8
6
11
214

9
5
7
7
10
2
3
9
11
4
10
8
6
11
215

5
7
7
2
3
9
4
10
10
9
8
6
11
11
216

5
7
7
9
8
3
9
2
4
8
10
10
11
5
6
11
217

7 9
3
5
9
2
7
4
8
10
6
11
218

9
5
10
3
7
8
2
4
6
7 9
11
219

• Game evaluation build the dynamical
tactics from game observation (real
images or simulation)
• Game design change team players
strategy and build the dynamical tactics
interatively
220

Layout
• Introduction
• Goal keeper
• Soccer game model
• Example
• Game evaluation and design
• Future works
221

• Estimate the relative impact of ability and
strategy in goal keeper results
• Formalize a goal keeper strategy and validate it
statistically
• Develop methodologies for training the goal
keeper strategy: data base of tapes (keeper
actions, adversary players abilities), simulators,
field techniques
• Model player ability and strategies
• Develop tools to simulate soccer games; to
design dynamical tactics; and to extract
dynamical tactics automatically from game tapes
222