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公开(公告)号：US10916008B2
公开(公告)日：2021-02-09
申请号：US16018115
申请日：2018-06-26
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Guruprasad Somasundaram , Ravishankar Sivalingam , Evan J. Ribnick , Kevin S. Xu
IPC: G06T7/00 , G06K9/00 , G06K9/46 , G06K9/62 , G06K9/34 , A61B5/00 , A61C9/00 , G06K9/66 , G06K9/32
Abstract: Methods for recognizing or identifying tooth types using digital 3D models of teeth. The methods include receiving a segmented digital 3D model of teeth and selecting a digital 3D model of a tooth from the segmented digital 3D model. An aggregation of the plurality of distinct features of the tooth is computed to generate a single feature describing the digital 3D model of the tooth. A type of the tooth is identified based upon the aggregation, which can include comparing the aggregation with features corresponding with known tooth types. The methods also include identifying a type of tooth, without segmenting it from an arch, based upon tooth widths and a location of the tooth within the arch.
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公开(公告)号：US10405796B2
公开(公告)日：2019-09-10
申请号：US15654848
申请日：2017-07-20
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Evan J. Ribnick , Guruprasad Somasundaram , Brian J. Stankiewicz , Aya Eid , Ravishankar Sivalingam , Shannon D. Scott , Anthony J. Sabelli , Robert D. Lorentz
Abstract: Methods for estimating and predicting tooth wear based upon a single 3D digital model of teeth. The 3D digital model is segmented to identify individual teeth within the model. A digital model of a tooth is selected from the segmented model, and its original shape is predicted. The digital model is compared with the predicted original shape to estimate wear areas. A mapping function based upon values relating to tooth wear can also be applied to the selected digital model to predict wear of the tooth.
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公开(公告)号：US20190114374A1
公开(公告)日：2019-04-18
申请号：US16217094
申请日：2018-12-12
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Guruprasad Somasundaram , Evan J. Ribnick , Ravishankar Sivalingam , Shannon D. Scott , Golshan Golnari , Aya Eid
Abstract: Methods for aligning a digital 3D model of teeth represented by a 3D mesh to a desired orientation within a 3D coordinate system. The method includes receiving the 3D mesh in random alignment and changing an orientation of the 3D mesh to align the digital 3D model of teeth with a desired axis in the 3D coordinate system. The methods can also detect a gum line in the digital 3D model to remove the gingiva from the model.
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公开(公告)号：US09841383B2
公开(公告)日：2017-12-12
申请号：US15032735
申请日：2014-10-16
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Evan J. Ribnick , John A. Ramthun , David D. Miller
IPC: G06K9/00 , G01N21/898 , G01N21/84 , G01N21/89 , G01N21/88 , G06T3/40 , G06T5/20 , G06T7/00 , G06T7/11 , G06T7/44
CPC classification number: G01N21/8983 , G01N21/8422 , G01N21/8851 , G01N21/8915 , G01N21/892 , G01N2021/8427 , G01N2021/8887 , G01N2021/8917 , G01N2201/12 , G06T3/40 , G06T5/20 , G06T7/0004 , G06T7/11 , G06T7/44 , G06T2207/20016 , G06T2207/20021 , G06T2207/30124
Abstract: A method for characterizing the uniformity of a material includes selecting a set of size scales at which to measure uniformity within an area of interest in an image of the material; suppressing features in the image smaller than a selected size scale of interest within the set of size scales; dividing the image into patches equal to the size scale of interest; and calculating a uniformity value within each patch.
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公开(公告)号：US20170311873A1
公开(公告)日：2017-11-02
申请号：US15654848
申请日：2017-07-20
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Evan J. Ribnick , Guruprasad Somasundaram , Brian J. Stankiewicz , Aya Eid , Ravishankar Sivalingam , Shannon D. Scott , Anthony J. Sabelli , Robert D. Lorentz
CPC classification number: A61B5/4557 , A61B5/0062 , A61B5/0088 , A61B5/4547 , A61B5/7267 , A61B5/7275 , A61B5/7278 , A61B5/743 , A61B2576/02 , A61C9/0053 , G06F19/30 , G06T7/0014 , G06T2207/10028 , G06T2207/30036 , G16H30/40 , G16H50/50
Abstract: Methods for estimating and predicting tooth wear based upon a single 3D digital model of teeth. The 3D digital model is segmented to identify individual teeth within the model. A digital model of a tooth is selected from the segmented model, and its original shape is predicted. The digital model is compared with the predicted original shape to estimate wear areas. A mapping function based upon values relating to tooth wear can also be applied to the selected digital model to predict wear of the tooth.
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Patent Agency Ranking
公开(公告)号：US20170178327A1
公开(公告)日：2017-06-22
申请号：US15448978
申请日：2017-03-03
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Guruprasad Somasundaram , Evan J. Ribnick , Ravishankar Sivalingam , Aya Eid , Theresa M. Meyer , Golshan Golnari , Anthony J. Sabelli
CPC classification number: G06T7/0016 , A61B5/0088 , A61B5/4547 , A61C7/002 , A61C9/0053 , A61C19/04 , G06F17/50 , G06K9/00362 , G06K2209/055 , G06T7/11 , G06T13/20 , G06T15/08 , G06T19/20 , G06T2200/04 , G06T2207/30036 , G06T2210/41
Abstract: A method for detecting tooth wear using digital 3D models of teeth taken at different times. The digital 3D models of teeth are segmented to identify individual teeth within the digital 3D model. The segmentation includes performing a first segmentation method that over segments at least some of the teeth within the model and a second segmentation method that classifies points within the model as being either on an interior of a tooth or on a boundary between teeth. The results of the first and second segmentation methods are combined to generate segmented digital 3D models. The segmented digital 3D models of teeth are compared to detect tooth wear by determining differences between the segmented models, where the differences relate to the same tooth to detect wear on the tooth over time.
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公开(公告)号：US10713396B2
公开(公告)日：2020-07-14
申请号：US16217094
申请日：2018-12-12
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Guruprasad Somasundaram , Evan J. Ribnick , Ravishankar Sivalingam , Shannon D. Scott , Golshan Golnari , Aya Eid
Abstract: Methods for aligning a digital 3D model of teeth represented by a 3D mesh to a desired orientation within a 3D coordinate system. The method includes receiving the 3D mesh in random alignment and changing an orientation of the 3D mesh to align the digital 3D model of teeth with a desired axis in the 3D coordinate system. The methods can also detect a gum line in the digital 3D model to remove the gingiva from the model.
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公开(公告)号：US10192003B2
公开(公告)日：2019-01-29
申请号：US14479692
申请日：2014-09-08
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Guruprasad Somasundaram , Evan J. Ribnick , Ravishankar Sivalingam , Shannon D. Scott , Golshan Golnari , Aya Eid
Abstract: Methods for aligning a digital 3D model of teeth represented by a 3D mesh to a desired orientation within a 3D coordinate system. The method includes receiving the 3D mesh in random alignment and changing an orientation of the 3D mesh to align the digital 3D model of teeth with a desired axis in the 3D coordinate system. The methods can also detect a gum line in the digital 3D model to remove the gingiva from the model.
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公开(公告)号：US20180333231A1
公开(公告)日：2018-11-22
申请号：US15597479
申请日：2017-05-17
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Guruprasad Somasundaram , Benjamin D. Zimmer , Alexandra R. Cunliffe , Mojtaba K. Elyaderani , Arash Sangari , Evan J. Ribnick
CPC classification number: A61C9/004 , G06T19/20 , G06T2210/41
Abstract: A method for aligning digital 3D models of dental arch pairs, including a mandible and maxilla, to bring them into bite alignment. The method estimates representative planes for the mandible and maxilla 3D models and transforms the models such that the representative planes are each aligned with their respective coordinate systems and shown in a horizontal view. The method also transforms the models such that the mandible and maxilla are each aligned with a same coordinate system and shown in a front view. The digital 3D models are then brought into bite alignment such that the mandible is in occlusion with the maxilla or within a distance near to occlusion. The digital models of the bite-aligned arch pairs can also be transformed or rotated to be shown centered in a front view.
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公开(公告)号：US20170169562A1
公开(公告)日：2017-06-15
申请号：US14965033
申请日：2015-12-10
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Guruprasad Somasundaram , Ravishankar Sivalingam , Evan J. Ribnick , Kevin S. Xu , Deepti Pachauri
CPC classification number: G06T7/0012 , A61B5/0088 , A61C9/0053 , G06K9/00214 , G06K9/32 , G06K9/4628 , G06K9/6267 , G06K9/6271 , G06K9/66 , G06T2207/10012 , G06T2207/30036
Abstract: Methods for recognizing or identifying tooth types using digital 3D models of teeth. The methods include receiving a segmented digital 3D model of teeth and selecting a digital 3D model of a tooth from the segmented digital 3D model. An aggregation of the plurality of distinct features of the tooth is computed to generate a single feature describing the digital 3D model of the tooth. A type of the tooth is identified based upon the aggregation, which can include comparing the aggregation with features corresponding with known tooth types. The methods also include identifying a type of tooth, without segmenting it from an arch, based upon tooth widths and a location of the tooth within the arch.
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