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Stas Goferman Lihi Zelnik-Manor Ayellet Tal
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Man in a flower field In the fields Spring blossom
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Olympic weight lifter Olympic victory Olympic achievement
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Man in a flower field In the fields Spring blossom Olympic weight lifter Olympic victory Olympic achievement
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Man in a flower field In the fields Spring blossom Olympic weight lifter Olympic victory Olympic achievement
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Following perceptual properties
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Local low-level factors Contrast Color
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[Walther and Koch, Neural Networks 2006]
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Local low-level factors Contrast Color Walther & Koch, 2006
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Global considerations Maintain unique features
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[Hou & Zhang CVPR 2007]
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Global considerations Maintain unique features Hou & Zhang, 2007
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Local & global
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InputMulti-scale contrast Center surround ColorFinal [Liu et al, CVPR 2007]
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Local & global Liu et al, 2007
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Visual organization (Gestalt) Few centers of gravity [Koffka] Position is important!!
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High-level Faces Objects People … [Judd et al, ICCV 2009] Low-level With face detection
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Our result
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Local Walther & Koch, 2006 Global Hou & Zhang, 2007 Local + global Liu et al, 2007
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The steps of our algorithm
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Principles 1-2: Unique appearance salient salient Not salient
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Principles 1-2: Unique appearance salient
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Principles 1-2: Unique appearance salient Euclidean distance between colors of patches at p i & p j
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Principles 1-2: Unique appearance salient high salient
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Principle 3: Position is important! Similar patches both near and far Not salient
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Principle 3: Position is important! Similar patches near Salient
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Principle 3: Position is important! Normalized Euclidean distance between positions of p i & p j
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Distance between a pair of patches: salient High
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Distance between a pair of patches: salient High for K most similar
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K most similar patches at scale r
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Salient at: Multiple scales foreground Few scales background Scale 1Scale 4
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Principle 3: Few centers of gravity Context
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X Final result Focus points Distance map
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Single-scale saliency Multiple scales Final saliency X
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Walther & Koch, 2006Hou & Zhang, 2007 Our result
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Walther & Koch, 2006Hou & Zhang, 2007 Our result
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Walther & Koch, 2006Hou & Zhang, 2007 Our result
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Walther & Koch, 2006Hou & Zhang, 2007 Our result
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Walther & Koch, 2006Hou & Zhang, 2007 Our result
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Walther & Koch, 2006Hou & Zhang, 2007 Our result
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Database of Hou & Zhang
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Our Our + center Judd
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Our Our + center Judd
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InputOur resultBoiman & Irani
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InputOur resultBoiman & Irani
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Image resizing
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Liu et al, 2007 Our result
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Seam CarvingOur result Liu et al [Avidan et al, SIGGRPH’07]
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Seam CarvingOur result [Avidan et al, SIGGRPH’07]
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Seam CarvingOur result [Avidan et al, SIGGRPH’07]
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Combines local & global saliency Incorporates perceptual considerations State-of-the-art results Code is available
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Long run-time (~30 sec for 250x250 pixels) Repetitive texture is totally eliminated Can we control how much context is included?
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Can it be extended to video? Is there a faster implementation
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