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A Block-Edge-Pattern based Content Descriptor in DCT Domain

Main information
In this correspondence, we describe a robust and effective content descriptor based on block edge patterns extracted directly in DCT domain, which is suitable for applications in JPEG or MPEG compressed images and videos. This content descriptor is constructed by a run-length edge-block histogram with three patterns including horizontal edge, vertical edge and no-edge. In comparison with existing descriptors, the proposed features: (i) low-cost computing suitable for real-time implementation and high-speed processing of compressed images or videos; (ii) robust to orientation changes such as rotation, noise, reverse etc. (iii) directly operates in compressed domain. Extensive experiments support that the proposed content descriptor is effective in describing visual content. In comparison with existing techniques, the proposed descriptor achieves superior performances in terms of retrieval precision and recall rates. 
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WP5: Detection, Extraction and Annotation of Knowledge. 
School of Informatics University of Bradford  Jianmin Jiang 
2008-03-05 23:42  Request for more detail


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For educational purposes only - if public document.  For educational purposes only - if public document. 


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Copyright School of Informatics, University of Bradford.  Patent Protection not sought. 
Licensing Protection not sought.  Utility Model Protection not sought. 
 
Accepted for publication in: IEEE Transactions on Circuits, Systems and Video Technology 
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