Local spectral anisotropy is a valid cue for figure-ground organization in natural scenes.

ABSTRACT: An important step in the process of understanding visual scenes is its organization in different perceptual objects which requires figure-ground segregation. The determination of which side of an occlusion boundary is figure (closer to the observer) and which is ground (further away from the observer) is made through a combination of global cues, like convexity, and local cues, like T-junctions. We here focus on a novel set of local cues in the intensity patterns along occlusion boundaries which we show to differ between figure and ground. Image patches are extracted from natural scenes from two standard image sets along the boundaries of objects and spectral analysis is performed separately on figure and ground. On the figure side, oriented spectral power orthogonal to the occlusion bound

SUBMITTER: Ramenahalli S 

PROVIDER: S-EPMC4710966 | biostudies-literature | 2014 Oct

REPOSITORIES: biostudies-literature