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X-RAY IMAGE PROCESSING METHOD USING FOURIER DESCRIPTORS OF OPEN CURVES AND A SYSTEM THEREOF 新技術説明会 実績あり

外国特許コード F090002147
整理番号 F090002147
掲載日 2009年12月11日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2009JP057100
国際公開番号 WO 2009/125755
国際出願日 平成21年4月7日(2009.4.7)
国際公開日 平成21年10月15日(2009.10.15)
優先権データ
  • 特願2008-100173 (2008.4.8) JP
発明の名称 (英語) X-RAY IMAGE PROCESSING METHOD USING FOURIER DESCRIPTORS OF OPEN CURVES AND A SYSTEM THEREOF 新技術説明会 実績あり
発明の概要(英語) Three-dimensional attitude and position can be estimated in a short calculation time from a 2-dimensional projection image of a subject such as an artificial joint or a bone of biological tissue and a 2-dimensional projection image in which a portion of the curve of the outline is impossible to discriminate because of missing parts or noise. An X-ray image processing method estimates the attitude and the position of a measurement subject by comparing the measurement subject in an X-ray projection image to a parent database storing information about a plurality of candidate subjects. The 3-dimensional shapes of the candidate subjects are known. The parent database stores the constituent outline groups of a plurality of candidate subjects projected to two dimensions from various angles. The constituent outline corresponding to an outline in the measurement subject and the corresponding candidate subject are estimated by comparing the coefficients of the open curve Fourier descriptors of the outline of the measurement subject and the coefficients of the open curve Fourier descriptors of each constituent outline in the constituent outline group. The attitude and the position of the measurement subject are calculated from the constituent outlines corresponding to the outlines of the measurement subject and the corresponding candidate subjects.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • Yamaguchi University
  • 発明者(英語)
  • Mori, Koji
国際特許分類(IPC)
指定国 AE AG AL AM AO AT AU AZ BA BB BE BF BG BH BJ BR BW BY BZ CA CF CG CH CI CM CN CO CR CU CY CZ DE DK DM DO DZ EC EE EG ES FI FR GA GB GD GE GH GM GN GQ GR GT GW HN HR HU ID IE IL IN IS IT JP KE KG KM KN KP KR KZ LA LC LK LR LS LT LU LV LY MA MC MD ME MG MK ML MN MR MT MW MX MY MZ NA NE NG NI NL NO NZ OM PG PH PL PT RO RS RU SC SD SE SG SI SK SL SM SN ST SV SY SZ TD TG TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
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