Patents by Inventor Ravishankar Sivalingam

Ravishankar Sivalingam has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20160321825
    Abstract: To provide an apparatus, a system, and a program that can easily detect an image region where retroreflected light is recorded without being influenced by a neighboring object. In one embodiment, a measuring apparatus (1) includes an imaging unit (11), a converter (141) that converts first image data captured by the imaging unit using light emission for photography and second image data captured by the imaging unit without using the light emission for photography to luminance values, a differential processor (142) that calculates a difference between a first luminance value based on the first image data and a second luminance value based on the second image data for each pixel and generates an output image visually representing a region where the difference is present based on an obtained differential image, and a display unit (16) that displays the output image.
    Type: Application
    Filed: December 23, 2014
    Publication date: November 3, 2016
    Inventors: Fumio Karasawa, Guruprasad Somasundaram, Robert W. Shannon, Richard J. Moore, Anthony J. Sabelli, Ravishankar Sivalingam
  • Patent number: 9412174
    Abstract: Techniques for creating and manipulating software notes representative of physical notes are described. A computing device includes a processor, an image collection module executable by the processor and configured to receive an input image of an environment having a plurality of overlapping physical notes, and an image processing engine executable by the processor and configured to process the input image with the computing device to identify the plurality of overlapping physical notes in the input image. The image processing engine determines a boundary of each note in the plurality of overlapping physical notes in the input image, and generates a plurality of digital notes corresponding to the determined boundary of each of the overlapping physical notes identified in the input image.
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: August 9, 2016
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Guruprasad Somasundaram, Ravishankar Sivalingam, David M. Mahli, Cristin E. Moran, Richard J. Moore, Pontus Axelsson, Michael Rotstein, Roland Persson
  • Publication number: 20160220173
    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.
    Type: Application
    Filed: January 30, 2015
    Publication date: August 4, 2016
    Inventors: Evan J. Ribnick, Guruprasad Somasundaram, Brian J. Stankiewicz, Aya Eid, Ravishankar Sivalingam, Shannon D. Scott, Anthony J. Sabelli, Robert D. Lorentz
  • Publication number: 20160117570
    Abstract: This disclosure describes techniques for creating and manipulating software notes representative of physical notes. For example, techniques are described for recognizing physical notes present within a physical environment, capturing information therefrom and creating corresponding digital representations of the physical notes, referred to herein as digital notes or software-based notes. At least some aspects of the present disclosure feature system and methods for note recognition using color classification. The system receives a visual representation of a scene having one or more notes, where each note has a color. The system generates indicators indicative of color classes of pixels in the visual representation. The system further determines a general boundary of one of the notes based on the indicators.
    Type: Application
    Filed: January 4, 2016
    Publication date: April 28, 2016
    Inventors: Diane R. Wolk, Cristin E. Moran, David M. Mahli, Guruprasad Somasundaram, Richard J. Moore, Ravishankar Sivalingam, Jennifer F. Schumacher
  • Patent number: 9292186
    Abstract: At least some aspects of the present disclosure feature a computing device configured to receive an input image of an environment having a plurality of physical notes. The computing device automatically processes the input image to identify at least some of the plurality of the physical notes in the input image and displays the input image and indications indicative of the identified physical notes on a user interface. The computing device receives a user input indicating a position within the input image via a user interface and, responsive to the user input, recognizes proximate to the position a missed one of the physical notes that was not identified by the computing device when initially processing the input image.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: March 22, 2016
    Assignee: 3M Innovative Properties Company
    Inventors: Richard J. Moore, David M. Mahli, Pontus Axelsson, Cristin E. Moran, Roland Persson, Michael Rotstein, Ravishankar Sivalingam, Guruprasad Somasundaram, Diane R. Wolk, Linus â„«kerlund
  • Publication number: 20160070821
    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.
    Type: Application
    Filed: September 8, 2014
    Publication date: March 10, 2016
    Inventors: Guruprasad Somasundaram, Evan J. Ribnick, Ravishankar Sivalingam, Shannon D. Scott, Golshan Golnari, Aya Eid
  • Patent number: 9251414
    Abstract: This disclosure describes techniques for creating and manipulating software notes representative of physical notes. For example, techniques are described for recognizing physical notes present within a physical environment, capturing information therefrom and creating corresponding digital representations of the physical notes, referred to herein as digital notes or software-based notes. At least some aspects of the present disclosure feature system and methods for note recognition using color classification. The system receives a visual representation of a scene having one or more notes, where each note has a color. The system generates indicators indicative of color classes of pixels in the visual representation. The system further determines a general boundary of one of the notes based on the indicators.
    Type: Grant
    Filed: October 1, 2014
    Date of Patent: February 2, 2016
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Diane R. Wolk, Cristin E. Moran, David M. Mahli, Guruprasad Somasundaram, Richard J. Moore, Ravishankar Sivalingam, Jennifer F. Schumacher
  • Publication number: 20160004811
    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.
    Type: Application
    Filed: July 1, 2014
    Publication date: January 7, 2016
    Inventors: Guruprasad Somasundaram, Evan J. Ribnick, Ravishankar Sivalingam, Aya Eid, Theresa M. Meyer, Golshan Golnari, Anthony J. Sabelli
  • Publication number: 20150220257
    Abstract: At least some aspects of the present disclosure feature a computing device configured to receive an input image of an environment having a plurality of physical notes. The computing device automatically processes the input image to identify at least some of the plurality of the physical notes in the input image and displays the input image and indications indicative of the identified physical notes on a user interface. The computing device receives a user input indicating a position within the input image via a user interface and, responsive to the user input, recognizes proximate to the position a missed one of the physical notes that was not identified by the computing device when initially processing the input image.
    Type: Application
    Filed: January 29, 2015
    Publication date: August 6, 2015
    Inventors: Richard J. Moore, David M. Mahli, Pontus Axelsson, Cristin E. Moran, Roland Persson, Michael Rotstein, Ravishankar Sivalingam, Guruprasad Somasundaram, Diane R. Wolk, Linus Ã…kerlund
  • Publication number: 20150106699
    Abstract: Techniques for creating and manipulating software notes representative of physical notes are described. A computing device includes a processor, an image collection module executable by the processor and configured to receive an input image of an environment having a plurality of overlapping physical notes, and an image processing engine executable by the processor and configured to process the input image with the computing device to identify the plurality of overlapping physical notes in the input image. The image processing engine determines a boundary of each note in the plurality of overlapping physical notes in the input image, and generates a plurality of digital notes corresponding to the determined boundary of each of the overlapping physical notes identified in the input image.
    Type: Application
    Filed: October 15, 2014
    Publication date: April 16, 2015
    Inventors: Guruprasad Somasundaram, Ravishankar Sivalingam, David M. Mahli, Cristin E. Moran, Richard J. Moore, Pontus Axelsson, Michael Rotstein, Roland Persson
  • Publication number: 20150055859
    Abstract: This disclosure describes techniques for creating and manipulating software notes representative of physical notes. For example, techniques are described for recognizing physical notes present within a physical environment, capturing information therefrom and creating corresponding digital representations of the physical notes, referred to herein as digital notes or software-based notes. At least some aspects of the present disclosure feature system and methods for note recognition using color classification. The system receives a visual representation of a scene having one or more notes, where each note has a color. The system generates indicators indicative of color classes of pixels in the visual representation. The system further determines a general boundary of one of the notes based on the indicators.
    Type: Application
    Filed: October 1, 2014
    Publication date: February 26, 2015
    Inventors: Diane R. Wolk, Cristin E. Moran, David M. Mahli, Guruprasad Somasundaram, Richard J. Moore, Ravishankar Sivalingam, Jennifer F. Schumacher
  • Patent number: 8891862
    Abstract: This disclosure describes techniques for creating and manipulating software notes representative of physical notes. For example, techniques are described for recognizing physical notes present within a physical environment, capturing information therefrom and creating corresponding digital representations of the physical notes, referred to herein as digital notes or software-based notes. At least some aspects of the present disclosure feature system and methods for note recognition using color classification. The system receives a visual representation of a scene having one or more notes, where each note has a color. The system generates indicators indicative of color classes of pixels in the visual representation. The system further determines a general boundary of one of the notes based on the indicators.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: November 18, 2014
    Assignee: 3M Innovative Properties Company
    Inventors: Diane R. Wolk, Cristin E. Moran, David M. Mahli, Guruprasad Somasundaram, Richard J. Moore, Ravishankar Sivalingam, Jennifer F. Schumacher