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• W1519186792 abstract "The Multimedia Content Description Interface (ISO/IEC 15938), commonly known to as MPEG-7, became a standard as of September of 2001. Unlike its predecessors, MPEG7 standardizes multimedia metadata description. By providing robust descriptors and an effective system for storing them, MPEG-7 is designed to provide a means of navigation through audio-visual content. In particular, MPEG-7 provides two two-dimensional shape descriptors, the Angular Radial Transform (ART) and Curvature Scaled Space (CSS), for use in image and video annotation and retrieval. Field Programmable Gate Arrays (FPGAs) have a very general structure and are made up of programmable switches that allow the end-user, rather than the manufacturer, to configure these switches for whatever design is needed by their application. This flexibly has led to the use of FPGAs for prototyping and implementing circuit designs as well as their use being suggesting as part of reconfigurable computing. For this work, an FPGA based ART extractor was designed and simulated for a Xilinx Virtex-E XCV300e in order to provide a speedup over software based extraction. The design created is capable of processing over 69,4400 pixels a minute. This design utilizes 99% of the FPGA's logical resources and operates at a clock rate of 25 MHz. Along with the proposed design, the MPEG-7 shape descriptors were explored as to how well they retrieved similar objects and how these objects matched up to what a human would expect. Results showed that the majority of the retrievals made using the MPEG-7 shape descriptors returned visually acceptable results. It should be noted that even the human results had a high amount of variance. Finally, this thesis briefly explored the potential of utilizing the ART descriptor for optical character recognition (OCR) in the context of image retrieval from databases. It was demonstrated that the ART has potential for use in OCR, however there is still research to be performed in this area. Acknowledgements There are many people I would like to thank for their help and contributions to this work. In particular, I would like to thank my two advisors, Dr. Andreas Savakis and Dr. Ricardo de Queiroz. I would also like to thank my committee members, Dr. Fei Hu and Dr. Greg Semeraro. I would also like to thank the following people: Dr.Martin Lukowiak for his assistance in answering questions pertaining to the Xilinx FPGA and the software utilized. Jeremy Brown and Travis Brown for the use of their Linux systems during the devel opment stages of the C++ software. Douglas Hoffman for aid in learning IMpX, suggestions, computer help, proof-reading, and late-night meals. Cindy Harper for proof-reading, editing, comments and much encouragement. Lon Highby for his aid in the development of the Visual Basic GUI. Richard Tolleson for various computer related and non-computer related aid. Jennifer Zenner for proof-reading, editing and for the L^LEXform. Anne DeFelice for aid with administrative tasks. Last, but certainly not least, I would like to thank my parents, Gregory and Paula Woz, as well as my brother, Jason Woz. Their support and encouragement has been greatly appreciated." @default.
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• W1519186792 date "2003-01-01" @default.
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• W1519186792 title "An Exploration of MPEG-7 Shape Descriptors" @default.
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