An intrinsic semantic framework for recognizing image objects

Authors:
Nishat Ahmad;Youngeun An;Jongan Park
Affiliations:
Department of Information & Communication Engineering, Chosun University, Gwangju, South Korea;Department of Information & Communication Engineering, Chosun University, Gwangju, South Korea;Department of Information & Communication Engineering, Chosun University, Gwangju, South Korea
Venue:
Multimedia Tools and Applications
Year:
2012

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Abstract

The paper proposes a new approach to find semantic meanings in visual object class structure, in line with the Gestalt laws of proximity. Micro level semantic structures are formed by line segments (arcs also approximated into line segments based on pixel deviation threshold) which are in close proximity. These structures are hierarchically combined till a semantic label can be assigned. The algorithm extracts semantic groups, their inter-relations and represents these using a graph. Invariant geometrical properties of the groups and relations are used as vertex and edge labels. A graph model captures the inter class variability by analyzing the repetitiveness of structures and relations and uses it as a weighting factor for classification. The algorithm has been tested on a standard benchmark database and compared with existing approaches.