GestaltLaws’of’Perceptual’ Organiza6on’web.engr.oregonstate.edu/.../lectures/Gestalt.pdf ·...

21
Gestalt Laws of Perceptual Organiza6on CS 559 – March 30 th Nadia Payet

Transcript of GestaltLaws’of’Perceptual’ Organiza6on’web.engr.oregonstate.edu/.../lectures/Gestalt.pdf ·...

Page 1: GestaltLaws’of’Perceptual’ Organiza6on’web.engr.oregonstate.edu/.../lectures/Gestalt.pdf · Symmetry’ • α i is’the’angle’between’line’(p 1,p 2)’and’normal’

Gestalt  Laws  of  Perceptual  Organiza6on  

CS  559  –  March  30th  Nadia  Payet  

Page 2: GestaltLaws’of’Perceptual’ Organiza6on’web.engr.oregonstate.edu/.../lectures/Gestalt.pdf · Symmetry’ • α i is’the’angle’between’line’(p 1,p 2)’and’normal’

How  do  we  perceive  objects?  

Page 3: GestaltLaws’of’Perceptual’ Organiza6on’web.engr.oregonstate.edu/.../lectures/Gestalt.pdf · Symmetry’ • α i is’the’angle’between’line’(p 1,p 2)’and’normal’

Gestalt  Psychology  

•  The  Gestalt  laws  prescribe  for  us  what  we  are  to  recognize  ‘as  one  thing’  (Köhler,  1920)  – Gestalt  means  “shape”  or  “form”  in  German.  

•  How  smaller  objects  are  grouped  to  form  larger  ones  

•  Rules  of  the  organiza6on  of  perceptual  scenes  Heuris6cs  

Page 4: GestaltLaws’of’Perceptual’ Organiza6on’web.engr.oregonstate.edu/.../lectures/Gestalt.pdf · Symmetry’ • α i is’the’angle’between’line’(p 1,p 2)’and’normal’

Problem  statement  

•  Given  a  set  of  disconnected  edges  – Find  a  subset  of  these  edges  that  form  perceptually  salient  groups  

– Use  Gestalt  principles  to  iden6fy  these  groups  

•  Reconnect  objects  that  appear  disconnected  in  the  image  (occlusion,  illumina6on,  …)  

Page 5: GestaltLaws’of’Perceptual’ Organiza6on’web.engr.oregonstate.edu/.../lectures/Gestalt.pdf · Symmetry’ • α i is’the’angle’between’line’(p 1,p 2)’and’normal’

Gestalt  Laws  

•  Proximity  •  Collinearity  •  Co-­‐circularity  •  Con6nuity  •  Parallelism  •  Symmetry  •  Closure  •  Convexity  •  …  

Page 6: GestaltLaws’of’Perceptual’ Organiza6on’web.engr.oregonstate.edu/.../lectures/Gestalt.pdf · Symmetry’ • α i is’the’angle’between’line’(p 1,p 2)’and’normal’

Perceptual  Organiza6on  

Page 7: GestaltLaws’of’Perceptual’ Organiza6on’web.engr.oregonstate.edu/.../lectures/Gestalt.pdf · Symmetry’ • α i is’the’angle’between’line’(p 1,p 2)’and’normal’

Perceptual  Organiza6on  

Symmetry  

Page 8: GestaltLaws’of’Perceptual’ Organiza6on’web.engr.oregonstate.edu/.../lectures/Gestalt.pdf · Symmetry’ • α i is’the’angle’between’line’(p 1,p 2)’and’normal’

Perceptual  Organiza6on  

Symmetry  

Similarity  

Page 9: GestaltLaws’of’Perceptual’ Organiza6on’web.engr.oregonstate.edu/.../lectures/Gestalt.pdf · Symmetry’ • α i is’the’angle’between’line’(p 1,p 2)’and’normal’

Perceptual  Organiza6on  

Symmetry  

Similarity  

Proximity  

Page 10: GestaltLaws’of’Perceptual’ Organiza6on’web.engr.oregonstate.edu/.../lectures/Gestalt.pdf · Symmetry’ • α i is’the’angle’between’line’(p 1,p 2)’and’normal’

Perceptual  Organiza6on  

Symmetry  

Similarity  

Proximity  

Closure  

Page 11: GestaltLaws’of’Perceptual’ Organiza6on’web.engr.oregonstate.edu/.../lectures/Gestalt.pdf · Symmetry’ • α i is’the’angle’between’line’(p 1,p 2)’and’normal’

Proximity  

Lowe,  AIJ  1987  

Page 12: GestaltLaws’of’Perceptual’ Organiza6on’web.engr.oregonstate.edu/.../lectures/Gestalt.pdf · Symmetry’ • α i is’the’angle’between’line’(p 1,p 2)’and’normal’

Collinearity  

Lowe,  AIJ  1987  

Page 13: GestaltLaws’of’Perceptual’ Organiza6on’web.engr.oregonstate.edu/.../lectures/Gestalt.pdf · Symmetry’ • α i is’the’angle’between’line’(p 1,p 2)’and’normal’

Collinearity  

Zhu,  PAMI  1999  

Page 14: GestaltLaws’of’Perceptual’ Organiza6on’web.engr.oregonstate.edu/.../lectures/Gestalt.pdf · Symmetry’ • α i is’the’angle’between’line’(p 1,p 2)’and’normal’

Co-­‐circularity  

Zhu,  PAMI  1999  

Page 15: GestaltLaws’of’Perceptual’ Organiza6on’web.engr.oregonstate.edu/.../lectures/Gestalt.pdf · Symmetry’ • α i is’the’angle’between’line’(p 1,p 2)’and’normal’

Con6nuity  

•  Curvilinear  con6nuity  is  measured  by  angle  θ.  

Page 16: GestaltLaws’of’Perceptual’ Organiza6on’web.engr.oregonstate.edu/.../lectures/Gestalt.pdf · Symmetry’ • α i is’the’angle’between’line’(p 1,p 2)’and’normal’

Parallelism  

Lowe,  AIJ  1987  

Page 17: GestaltLaws’of’Perceptual’ Organiza6on’web.engr.oregonstate.edu/.../lectures/Gestalt.pdf · Symmetry’ • α i is’the’angle’between’line’(p 1,p 2)’and’normal’

Parallelism  

Zhu,  PAMI  1999  

Page 18: GestaltLaws’of’Perceptual’ Organiza6on’web.engr.oregonstate.edu/.../lectures/Gestalt.pdf · Symmetry’ • α i is’the’angle’between’line’(p 1,p 2)’and’normal’

Symmetry  

Zhu,  PAMI  1999  

Page 19: GestaltLaws’of’Perceptual’ Organiza6on’web.engr.oregonstate.edu/.../lectures/Gestalt.pdf · Symmetry’ • α i is’the’angle’between’line’(p 1,p 2)’and’normal’

Symmetry  

•  αi is  the  angle  between  line  (p1,p2)  and  normal  vectors  at  pi  

•  p1  and  p2  are  symmetric  if  α1  = α2  = α  

Stark,  ICCV  2009  

Page 20: GestaltLaws’of’Perceptual’ Organiza6on’web.engr.oregonstate.edu/.../lectures/Gestalt.pdf · Symmetry’ • α i is’the’angle’between’line’(p 1,p 2)’and’normal’

Symmetry  

•  Represent  axis  of  symmetry  with  a  B-­‐spline  – Parameters  form  a  descriptor  vector  

•  Record  length  profile  of  the  symmetry  lines  – PCA  reduc6on  to  obtain  a  compact  descriptor  

Stark,  ICCV  2009  

Page 21: GestaltLaws’of’Perceptual’ Organiza6on’web.engr.oregonstate.edu/.../lectures/Gestalt.pdf · Symmetry’ • α i is’the’angle’between’line’(p 1,p 2)’and’normal’

Closure  L2  measure  of  gaps  is  shown  to  be  most  consistent  with  human  percep6on  

Elder  and  Zucker,  A  Measure  of  Closure,  1994  


TeDeum- Prelude Marc-Antoine Charpentier (1643-1704) - Te Deum orchestra.pdfΑ > > > α α ∀ α ∀ ∀ α α α α α α 1 1 11 11 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 11 Flute Oboe

TeDeum- Prelude Marc-Antoine Charpentier (1643-1704) - Te Deum orchestra.pdfΑ > > > α α ∀ α ∀ ∀ α α α α α α 1 1 11 11 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 11 Flute Oboe

Sadaf Shahab. M... · 1 E + α 2 CO2 + α 3 K + α 4 L + α 5 X (2) Where expected signs of the parameters are: α 1 > 0, α 2 < 0, α 3 > 0, α 4 > 0, α 5 > 0. 3.

Sadaf Shahab. M... · 1 E + α 2 CO2 + α 3 K + α 4 L + α 5 X (2) Where expected signs of the parameters are: α 1 > 0, α 2 < 0, α 3 > 0, α 4 > 0, α 5 > 0. 3.

Lectures on Probability & Statistical Models · Generating functions while E(Y) = α/(1−α) and E(X) = α 1−α + α/β 1−α/β = (αβ −2α2 +α) (1−α)(β −α). Moment

Lectures on Probability & Statistical Models · Generating functions while E(Y) = α/(1−α) and E(X) = α 1−α + α/β 1−α/β = (αβ −2α2 +α) (1−α)(β −α). Moment

Α Ν Δ Ρ Ε Α Σ Κ. Α Ρ Β Α Ν Ι Τ Η Σ - Arvanitis Clinicarvanitisclinic.gr/wp-content/uploads/2018/07/C.V...Α Ν Δ Ρ Ε Α Σ Κ. Α Ρ Β Α Ν Ι Τ Η Σ GP, MD,

Α Ν Δ Ρ Ε Α Σ Κ. Α Ρ Β Α Ν Ι Τ Η Σ - Arvanitis Clinicarvanitisclinic.gr/wp-content/uploads/2018/07/C.V...Α Ν Δ Ρ Ε Α Σ Κ. Α Ρ Β Α Ν Ι Τ Η Σ GP, MD,

Solutions Chapters 6–10r-ash/Algebra/SolutionsChap6-10.pdf2 hypothesis,α i+1 isseparableoverF,henceoverE i(α p i+1BySection3.4,Problem3, α i+1 ∈E i(α p i+1)⊆E i(E p i+1 2.

Solutions Chapters 6–10r-ash/Algebra/SolutionsChap6-10.pdf2 hypothesis,α i+1 isseparableoverF,henceoverE i(α p i+1BySection3.4,Problem3, α i+1 ∈E i(α p i+1)⊆E i(E p i+1 2.

Senza titolo-1 - Re Controlli Industriali 03012-EN-1609v2-CK265_2.pdf · F = T sin α/2 F = T sin α/2 + P/2 cosß F = T sin α/2 - P/2 cosß Load N 10000 CK.265.500.65 5000 * for

Senza titolo-1 - Re Controlli Industriali 03012-EN-1609v2-CK265_2.pdf · F = T sin α/2 F = T sin α/2 + P/2 cosß F = T sin α/2 - P/2 cosß Load N 10000 CK.265.500.65 5000 * for

ΕΛΙΖΑΜΠΕΘ ΜΑΚΝΙΛ · 2019-10-17 · ΓΙΑΝΩΓΣΩ ΤΕΜΝΠΣΝΩ ΗΓ Η Γ Ι Α Α Ν Α Γ Ν Ω Σ Τ Ε Σ ΜΕ Α Π Α Ι Τ Η Σ Ε Ι Σ Eκδόσεις

ΕΛΙΖΑΜΠΕΘ ΜΑΚΝΙΛ · 2019-10-17 · ΓΙΑΝΩΓΣΩ ΤΕΜΝΠΣΝΩ ΗΓ Η Γ Ι Α Α Ν Α Γ Ν Ω Σ Τ Ε Σ ΜΕ Α Π Α Ι Τ Η Σ Ε Ι Σ Eκδόσεις

Study of 17 O(p, α ) 14 N reaction

Study of 17 O(p, α ) 14 N reaction

Développement et analyse de schémas adaptatifs pour les ... · structure d’arbre naturelle : on notera F(α) les 4 filles de α, P(α) la parente de α, `(α) le niveau de α

Développement et analyse de schémas adaptatifs pour les ... · structure d’arbre naturelle : on notera F(α) les 4 filles de α, P(α) la parente de α, `(α) le niveau de α

Mindfulness-Based Interventions: What Works ... - cmc-ia.org · salivary α-amylase (p

Mindfulness-Based Interventions: What Works ... - cmc-ia.org · salivary α-amylase (p

020INSTITUT GESTALT.pdf

020INSTITUT GESTALT.pdf

JOURNAL OF INVESTMENT MANAGEMENT JOIMcheng/beyondvar.pdfBEYOND VALUE AT RISK:FORECASTING PORTFOLIO LOSS AT MULTIPLE HORIZONS 77 to x−α for some α>0, then VaR p = (1−p)−1/α

JOURNAL OF INVESTMENT MANAGEMENT JOIMcheng/beyondvar.pdfBEYOND VALUE AT RISK:FORECASTING PORTFOLIO LOSS AT MULTIPLE HORIZONS 77 to x−α for some α>0, then VaR p = (1−p)−1/α

Intensity measures that reduce collapse capacity dispersion ......x(t) P rigid, h with P-delta no P-delta 1 1 f f y x x y ϕ(t) α α−θ θ (a) (b) Fig. 1 a P-delta vulnerable SDOF

Intensity measures that reduce collapse capacity dispersion ......x(t) P rigid, h with P-delta no P-delta 1 1 f f y x x y ϕ(t) α α−θ θ (a) (b) Fig. 1 a P-delta vulnerable SDOF

Gestalt principles for document design - Knowledge Articleskrypton.mnsu.edu/~qt2885pw/674du/Gestalt.pdf · (Gestalt.doc) Gestalt principles for document design 1. Perception is an

Gestalt principles for document design - Knowledge Articleskrypton.mnsu.edu/~qt2885pw/674du/Gestalt.pdf · (Gestalt.doc) Gestalt principles for document design 1. Perception is an

CHAPTER 13. RADIATION AND RADON GAS · 2013. 5. 28. · RaE 5.02 day RaF 138.3 day β 206 Pb stable β α α α α 214 RaB 26.8 min RaC 19.7 min RaC' 164 µs β α α,γ βγ α,γ

CHAPTER 13. RADIATION AND RADON GAS · 2013. 5. 28. · RaE 5.02 day RaF 138.3 day β 206 Pb stable β α α α α 214 RaB 26.8 min RaC 19.7 min RaC' 164 µs β α α,γ βγ α,γ

simerini.sigmalive.com...34 | SPORTS | ΠΕΜΠΤΗ2 ΦΕΒPΟΥΑΡΙΟΥ 2017 ime Α Ε Ε Α Α 10η Α η Α η η 1η ΙΠΠΟΔΡΟΜΙΑ 1ος ΚΡΙΣΜΑΣ ΣΠΙΡΙΤ(7),

simerini.sigmalive.com...34 | SPORTS | ΠΕΜΠΤΗ2 ΦΕΒPΟΥΑΡΙΟΥ 2017 ime Α Ε Ε Α Α 10η Α η Α η η 1η ΙΠΠΟΔΡΟΜΙΑ 1ος ΚΡΙΣΜΑΣ ΣΠΙΡΙΤ(7),

Quantum Magnetohydrodynamics - Professorprofessor.ufrgs.br/.../files/magnetohydrodynamic_model.pdf · 2021. 1. 21. · wave functions ψ α = ψ α(r,t), each with probability p α,

Quantum Magnetohydrodynamics - Professorprofessor.ufrgs.br/.../files/magnetohydrodynamic_model.pdf · 2021. 1. 21. · wave functions ψ α = ψ α(r,t), each with probability p α,

rec Alph α Black Series α

rec Alph α Black Series α

Kolmogorov-Smirnov and the others - UNIGEobseyer/CAFSTAT/paltani_060315.pdf · Correct usage of Kolmogorov-Smirnov Decide for a threshold α , for instance 5% If P(λ>D)>α , then

Kolmogorov-Smirnov and the others - UNIGEobseyer/CAFSTAT/paltani_060315.pdf · Correct usage of Kolmogorov-Smirnov Decide for a threshold α , for instance 5% If P(λ>D)>α , then

06.geometry+transform - Clarkson Universitytransform… · Consider the point and the vector P = P 0 + β 1 v 1 + β 2 v 2 +….+β n v n v=α 1 v 1 + α 2 v 2 +….+α n v n They

06.geometry+transform - Clarkson Universitytransform… · Consider the point and the vector P = P 0 + β 1 v 1 + β 2 v 2 +….+β n v n v=α 1 v 1 + α 2 v 2 +….+α n v n They