Segmenting Salient Shapes

old_uid7701
titleSegmenting Salient Shapes
start_date2009/11/26
schedule14h-16h
onlineno
summaryI will discuss the problem of detecting and segmenting salient objects in natural images. Humans are very good at this, and very fast. Most thoroughly studied is the task of rapid animal detection, however the mechanisms underlying rapid detection remain poorly understood. Here I will report recent psychophysical results suggesting that the fastest mechanisms underlying animal detection in natural scenes use contour shape as a principal discriminative cue, while somewhat slower mechanisms integrate these rapidly computed shape cues with image texture cues. Detection continues to improve with increased stimulus exposure, suggesting progressive refinement of neural representations.
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