id: 05266533
dt: a
an: 05266533
au: Ghosh, Kuntal; Pal, Sankar K.
ti: Attention in early vision: Some psychophysical insights.
so: Paletta, Lucas (ed.) et al., Attention in cognitive systems. Theories and
    systems from an interdisciplinary viewpoint. 4th international workshop
    on attention in cognitive systems, WAPCV 2007 Hyderabad, India, January
    8, 2007. Revised selected papers. Berlin: Springer (ISBN
    978-3-540-77342-9/pbk). Lecture Notes in Computer Science 4840. Lecture
    Notes in Artificial Intelligence, 381-398 (2007).
py: 2007
pu: Berlin: Springer
la: EN
cc: 
ut: 
ci: 
li: doi:10.1007/978-3-540-77343-6_25
ab: Summary: The Spotlight Models of attention that rely upon a bottom-up
    approach specifically through the dorsal pathways, can be modeled using
    multi-scale Gaussian pyramids with excitatory-inhibitory feedforward
    cellular neural networks (CNN) as feature detectors. Here we propose a
    modified disinhibitory zero-feedback CNN model derived out of a linear
    combination of three Gaussians only, that explains many brightness
    perception based psychophysical phenomena unexplainable with the old
    model and in the process predicts three different input cloning
    templates for global smoothing, global enhancement, as well as
    controlled smoothing and enhancement of retinal images within the focus
    of attention. The proposed approach provides new clues, based on the
    psychophysical stimuli, suggestive of a role of top-down attentional
    control possibly through the ventral pathways, even at the stage of
    low-level vision.
rv: