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- W2124317265 abstract "This paper presents a method of dental work (DW) extraction and matching for bitewing radiographs. The method includes an algorithm that can correctly extract DW's from radiograph images and two matching metrics (d <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>FD</sub> of frequency domain and d <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>XOR</sub> of spatial domain) that can effectively match a postmortem DW to the genuine antemortem DW in the database. The experimental results show that our method can extract DW's more correctly shape- and number-wise than methods that use global thresholding. The results also show that, for a database containing 52 different shaped DW's, the accuracy based on d <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>FD</sub> is 95% when using top 6% retrievals and achieves to 100% when using top 17% retrievals; whereas the accuracy based on d <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>XOR</sub> is 86 and 95 %, respectively, when using the same percentage retrievals. For a database containing 10% of hoax DW's (i.e., DW's have the same shape but different orientation/position as some genuine DW's), the accuracy based on both metrics maintains about the same except the top-1 match based on d <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>FD</sub> . The fact that d <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>XOR</sub> was not affected by hoax DW's indicates that d <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>FD</sub> and d <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>XOR</sub> can compensate each other when matching the postmortem DW with hoax DW's. Comparing with the 95% and 100% hit rates using top 8% and 47% retrievals from a much bigger database reported in literature, the metric d <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>FD</sub> not only is more efficient but gives a better result." @default.
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- W2124317265 date "2010-12-01" @default.
- W2124317265 modified "2023-10-17" @default.
- W2124317265 title "An effective dental work extraction and matching method for bitewing radiographs" @default.
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- W2124317265 doi "https://doi.org/10.1109/compsym.2010.5685460" @default.
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