From Edges to Objects Piotr Dollár and Larry Zitnick.

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Presentation transcript:

From Edges to Objects Piotr Dollár and Larry Zitnick

structured edge prediction [Dollár & Zitnick, ICCV13, arXiv14] from edges to objects [Zitnick & Dollár, ECCV14] outline

what defines an edge? Brightness Color Texture Parallelism Continuity Symmetry …

upgrading the output space { 0, 1 } { … } bits year CVPR06 ICCV13 CVPR13

random forests

structured forests

structured prediction

pixel prediction

sharpening

sharpened prediction

structured sharpened pixel  original image

SH = sharpen MS = multiscale gPb ODS=.73 gPb ODS=.73 FPS ≈ 1/240 Hz 2.5Hz SHSH+MS ODS = 0.73 ODS = 0.75 ODS = Hz 12.5Hz

structured edge prediction [Dollár & Zitnick, ICCV13, arXiv14] from edges to objects [Zitnick & Dollár, ECCV14] outline

sliding window detection

segmentation for detection

object proposals Random. Prim’s Selective Search CPMC Ojectness

object proposals from ? sliding windows? segments? superpixels? SLIC SEEDS

from edges to objects

thanks! source code available online

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