Object and scene analysis by saccadic eye-movements: an investigation with higher-order statistics
Krieger, Gerhard and Rentschler, Ingo and Hauske, Gert and Schill, Kerstin and Zetzsche, Christoph (2000) Object and scene analysis by saccadic eye-movements: an investigation with higher-order statistics. Spatial Vision, 13 (2-3), pp. 201-214. VSP.
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Based on an information theoretical approach, we investigate feature selection processes in saccadic object and scene analysis. Saccadic eye movements of human observers are recorded for a variety of natural and artificial test images. These experimental data are used for a statistical evaluation of the fixated image regions. Analysis of second-order statistics indicates that regions with higher spatial variance have a higher probability to be fixated, but no significant differences beyond these variance effects could be found at the level of power spectra. By contrast, an investigation with higher-order statistics, as reflected in the bispectral density, yielded clear structural differences between the image regions selected by saccadic eye movements as opposed to regions selected by a random process. These results indicate that nonredundant, intrinsically two-dimensional image features like curved lines and edges, occlusions, isolated spots, etc. play an important role in the saccadic selection process which must be integrated with top-down knowledge to fully predict object and scene analysis by human observers.
|Additional Information:||reprint available by email@example.com|
|Title:||Object and scene analysis by saccadic eye-movements: an investigation with higher-order statistics|
|Journal or Publication Title:||Spatial Vision|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 201-214|
|Keywords:||higher-order statistics, nonlinear image processing, saccadic eye movements, object recognition, scene analysis, natural images|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Space|
|HGF - Program Themes:||W EO - Erdbeobachtung|
|DLR - Research area:||Space|
|DLR - Program:||W EO - Erdbeobachtung|
|DLR - Research theme (Project):||W - Vorhaben Entwicklung eines Mini-SAR (old)|
|Institutes and Institutions:||Microwaves and Radar Institute|
|Deposited By:||Dr.-Ing. Gerhard Krieger|
|Deposited On:||04 Jan 2006|
|Last Modified:||27 Apr 2009 04:47|
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