Multiscale discriminant saliency for visual attention

Anh Cat Le Ngo, Li-Minn Ang, Guoping Qiu, Kah Phooi Seng

Research output: Book chapter/Published conference paperConference paperpeer-review


The bottom-up saliency, an early stage of humans' visual attention, can be considered as a binary classification problem between center and surround classes. Discriminant power of features for the classification is measured as mutual information between features and two classes distribution. The estimated discrepancy of two feature classes very much depends on considered scale levels; then, multi-scale structure and discriminant power are integrated by employing discrete wavelet features and Hidden markov tree (HMT). With wavelet coefficients and Hidden Markov Tree parameters, quad-tree like label structures are constructed and utilized in maximum a posterior probability (MAP) of hidden class variables at corresponding dyadic sub-squares. Then, saliency value for each dyadic square at each scale level is computed with discriminant power principle and the MAP. Finally, across multiple scales is integrated the final saliency map by an information maximization rule. Both standard quantitative tools such as NSS, LCC, AUC and qualitative assessments are used for evaluating the proposed multiscale discriminant saliency method (MDIS) against the well-know information-based saliency method AIM on its Bruce Database wity eye-tracking data. Simulation results are presented and analyzed to verify the validity of MDIS as well as point out its disadvantages for further research direction. © 2013 Springer-Verlag Berlin Heidelberg.
Original languageEnglish
Title of host publicationICCSA 2013: Computational Science and Its Applications – ICCSA 2013 Proceedings Part V
Place of PublicationHeidelberg
Number of pages20
ISBN (Print)9783642396366
Publication statusPublished - 2013
EventThe 13th International Conference on Computational Science and Its Applications : ICCSA 2013 - International University, Hi Chi Minh City, Viet Nam
Duration: 24 Jun 201327 Jun 2013


ConferenceThe 13th International Conference on Computational Science and Its Applications
Country/TerritoryViet Nam
CityHi Chi Minh City
Internet address


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