Spatial Vision
Spatial Vision
Spatial Vision
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Making local orientation explicit (V1)Machinery• Retina• LGN• V1• V2• V4• ITSensitivity• Luminance/contrast• Luminance/contrast (SF)• Contrast (SF/orientation)• Orientation/contour• Contour/2D shape• 2D shape/3D shapeLocal versus globalprocessingThe need to integrate• Integration (“binding”)• Gain control(segmentation)• Disambiguates local information• Global information can bemore informative (e.g. shape)
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