Saliency from hierarchical adaptation through decorrelation and variance normalization

TítuloSaliency from hierarchical adaptation through decorrelation and variance normalization
AutoresA. Garcia-Diaz, X.R. Fdez-Vidal, X.M. Pardo, R. Dosil
TipoArtículo de revista
Fonte Image and Vision Computing, ELSEVIER SCIENCE BV , Vol. 30, No. 1, pp. 51-64 , 2012.
RankRanked Q1 in Computer Vision and Pattern Recognition by SJR
ISSN0262-8856
DOI10.1016/j.imavis.2011.11.007
AbstractThis paper presents a novel approach to visual saliency that relies on a contextually adapted representation produced through adaptive whitening of color and scale features. Unlike previous models, the proposal is grounded on the specific adaptation of the basis of low level features to the statistical structure of the image. Adaptation is achieved through decorrelation and contrast normalization in several steps in a hierarchical approach, in compliance with coarse features described in biological visual systems. Saliency is simply computed as the square of the vector norm in the resulting representation. The performance of the model is compared with several state-of-the-art approaches, in predicting human fixations using three different eye-tracking datasets. Referring this measure to the performance of human priority maps, the model proves to be the only one able to keep the same behavior through different datasets, showing free of biases. Moreover, it is able to predict a wide set of relevant psychophysical observations, to our knowledge, not reproduced together by any other model before.
Palabras chaveSaliency; Bottom-up; Eye fixations; Decorrelation; Whitening; Visual attention

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