JP2015533551A - 歯の表面性状の推定 - Google Patents
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00002—Operational features of endoscopes
- A61B1/00004—Operational features of endoscopes characterised by electronic signal processing
- A61B1/00009—Operational features of endoscopes characterised by electronic signal processing of image signals during a use of endoscope
- A61B1/000095—Operational features of endoscopes characterised by electronic signal processing of image signals during a use of endoscope for image enhancement
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
- A61B1/0607—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements for annular illumination
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/24—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the mouth, i.e. stomatoscopes, e.g. with tongue depressors; Instruments for opening or keeping open the mouth
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
- A61B5/0082—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes
- A61B5/0088—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes for oral or dental tissue
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- A—HUMAN NECESSITIES
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/45—For evaluating or diagnosing the musculoskeletal system or teeth
- A61B5/4538—Evaluating a particular part of the muscoloskeletal system or a particular medical condition
- A61B5/4542—Evaluating the mouth, e.g. the jaw
- A61B5/4547—Evaluating teeth
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
- A61C1/08—Machine parts specially adapted for dentistry
- A61C1/088—Illuminating devices or attachments
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C9/00—Impression cups, i.e. impression trays; Impression methods
- A61C9/004—Means or methods for taking digitized impressions
- A61C9/0046—Data acquisition means or methods
- A61C9/0053—Optical means or methods, e.g. scanning the teeth by a laser or light beam
- A61C9/0066—Depth determination through adaptive focusing
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C9/00—Impression cups, i.e. impression trays; Impression methods
- A61C9/004—Means or methods for taking digitized impressions
- A61C9/0046—Data acquisition means or methods
- A61C9/0053—Optical means or methods, e.g. scanning the teeth by a laser or light beam
- A61C9/0073—Interferometric means or methods, e.g. creation of a hologram
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
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- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
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Abstract
Description
I=n×L
但し、ランバート反射の仮定の下、Iは観察されたmの強度の(知られている)ベクトルであり、nは(知られていない)面法線(例えば法線ベクトル情報)であり、Lは正規化された光方向の(知られている)3×m行列である。一部の実施形態では、表面性状を推定して(例えばユーザインターフェイスによって)表示し、推定した表面性状を歯科用模型と比較しない。
Claims (23)
- 歯の表面性状を推定する為の、計算装置によって実施される方法であって、
口腔内撮像装置を使用し、複数の光条件を利用して画像のシーケンスを集めるステップと、
前記画像のシーケンスに基づいて前記歯の前記表面性状を推定するステップと
を含む、方法。 - 前記複数の光条件が、様々な光源を有する複数の光条件を含む、請求項1に記載の方法。
- 前記様々な光源が、様々な数の光源、光源の様々な組合せ、様々な方向又は位置からの幾つかの光源、様々な周波数の幾つかの光源、様々なスペクトル上の幾つかの光源、移動する光源、及び様々な強度の幾つかの光源のうちの少なくとも1つを含む、請求項2に記載の方法。
- 複数の光条件を利用して前記画像のシーケンスを集めるステップが、前記シーケンス内の各画像を捕捉する為に異なる光源を利用するステップを含む、請求項1に記載の方法。
- 前記方法が、前記集めた画像のシーケンスを前記歯の歯科用模型と比較するステップを含む、請求項1に記載の方法。
- 前記集めた画像のシーケンスを比較するステップが、前記集めた画像のシーケンスを前記シーケンス内の前記画像それぞれの画素ごとの法線ベクトル情報に変換するステップを含む、請求項5に記載の方法。
- 前記集めた画像のシーケンスを比較するステップが、前記画像のシーケンスと前記歯科用模型との間の三次元整合を自動計算するステップを含む、請求項5に記載の方法。
- 前記推定した表面性状に基づいて歯科用模型に歯の細部を追加するステップを更に含む、請求項1に記載の方法。
- 前記画素ごとの法線ベクトル情報を利用して歯科用模型に歯の細部を追加するステップを更に含む、請求項6に記載の方法。
- 前記画像のシーケンスを集めるステップが、複数の光条件下で同じ歯の同じ領域の画像のシーケンスを集めるステップを含む、請求項1に記載の方法。
- 前記画像のシーケンスを集めるステップが、個々の光源の輪を含む歯科装置を使用して前記シーケンスを集めるステップを含む、請求項1に記載の方法。
- 歯の走査画像のシーケンスを歯科装置から受け取るステップであって、前記シーケンスは幾つかの個別の画像を含み、それぞれの個別の画像は異なる光条件下で集められる、受け取るステップと、
前記シーケンス内の前記個別の画像の少なくとも2つを互いに比較するステップと、
前記比較に基づいて前記歯の表面性状を推定するステップと
を含む、歯の表面性状を推定する為の方法を計算装置に実行させる為にプロセッサによって実行され得る実行可能命令を有する、非一時的な計算装置可読媒体。 - 前記推定した前記歯の表面性状に基づき、近くの歯の表面性状を推定するように前記命令が更に実行可能である、請求項12に記載の媒体。
- 前記推定した前記歯の表面性状をそれぞれの個別の画像の画素ごとの面法線ベクトルに変換するように前記命令が更に実行可能である、請求項12に記載の媒体。
- 前記面法線ベクトルに基づいて三次元の歯科用模型に細部を追加するように前記命令が更に実行可能である、請求項14に記載の媒体。
- それぞれの個別の画像と三次元模型との間の三次元整合を計算するように前記命令が更に実行可能である、請求項12に記載の媒体。
- 個々の光源のアレイであって、それぞれの個々の光源は独立にオン及びオフにすることができる、アレイと、
幾つかの歯の画像を捕捉することができる光学装置と
を含む、歯科装置であって、
前記幾つかの歯のうちの1本の第1の画像が第1の個々の光源を使用して捕捉され、前記幾つかの歯のうちの前記1本の第2の画像が第2の個々の光源を使用して捕捉される、
歯科装置。 - 前記捕捉画像を記憶する為のデータベースを更に含む、請求項17に記載の装置。
- 前記個々の光源のアレイが、個々の発光ダイオード(LED)光源を含む、請求項17に記載の装置。
- 前記個々の光源のアレイが着脱可能である、請求項17に記載の装置。
- 前記個々の光源のアレイが環状である、請求項17に記載の装置。
- 前記個々の光源のアレイが前記装置の先端に配置される、請求項17に記載の装置。
- 前記個々の光源のアレイが前記装置の略先端近くに配置される、請求項17に記載の装置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US13/631,571 | 2012-09-28 | ||
US13/631,571 US9192305B2 (en) | 2012-09-28 | 2012-09-28 | Estimating a surface texture of a tooth |
PCT/IB2013/002044 WO2014049410A1 (en) | 2012-09-28 | 2013-09-17 | Estimating a surface texture of a tooth |
Publications (2)
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JP2015533551A true JP2015533551A (ja) | 2015-11-26 |
JP6321016B2 JP6321016B2 (ja) | 2018-05-09 |
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JP2015533707A Active JP6321016B2 (ja) | 2012-09-28 | 2013-09-17 | 歯の表面性状の推定 |
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US (6) | US9192305B2 (ja) |
EP (1) | EP2900125B1 (ja) |
JP (1) | JP6321016B2 (ja) |
KR (1) | KR102022748B1 (ja) |
CN (1) | CN104822311B (ja) |
AU (1) | AU2013322309B2 (ja) |
IL (1) | IL237959B (ja) |
WO (1) | WO2014049410A1 (ja) |
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