Lecture 1: Introduction to Biological Vision - Vision Research ...

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• Object perception– Object properties: shape, material– Recognition:• Problem of variation: view, illumination,...• Viewer-object relations– Navigation• heading--motion and optic flow• Time-to-contact--motion and optic flow– Manipulation/grasp– Tracking and eye movements• Object-object relations– Object trajectories -- (depth from moving castshadows)– Scene interpretation, planningWednesday, August 29, 12Jobs of visionSame L(x,y), butdifferent apparent materialFrom AdelsonFrom Kersten et al.No change in L(t), butdifferent apparent motion indepth8
Visual neural architectureComplex system needed to do the jobs ofvision–Up to 50% of macaque monkey gray matter isvisually sensitive–Multiple pathways–Multiple interacting visual areas:• feedforward and feedback connections–Neural architecture reflects task-dependency• -- the jobs of visionWednesday, August 29, 12
Page 5 and 6: Lecture 1• Overview of primate vi
Page 7: The computational problemLyxYour br
Page 12: Measurements of vision• Image mea
Page 17 and 18: Wednesday, August 29, 12Eyeball: re
Page 19 and 20: Eyeball & muscles• Form & functio
Page 21 and 22: Wednesday, August 29, 12Optics
Page 23 and 24: • Why aren’t the optics better?
Page 25 and 26: Overview of human/primate visualsys
Page 27 and 28: • Functions of the retina- discre
Page 31 and 32: Pathwaysout of the eye“Area 17”
Page 33 and 34: Pathways from eye tocortex• Retin
Page 37 and 38: Primary visual cortex (V1)Anterioro
Page 39 and 40: V1 large scale organization:Retinot
Page 41 and 42: V1 small scale• Basic properties-
Page 43 and 44: V1 small scale• Basic properties-
Page 45 and 46: Contrast sensitivity of some V1neur
Page 47 and 48: Functions of localspatial filtering
Page 49 and 50: Functions of cortical local spatiot
Page 51 and 52: ming := 0.25` HRandomReal@D - 0.5`L
Page 53 and 54: Well-known problems with localedge
Page 57: Population coding and decodingCurre
Page 61:
Primary visual cortex (V1)• Summa
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