Patents by Inventor Pascal Frossard

Pascal Frossard 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: 20200228840
    Abstract: A method and an apparatus for encoding and/or decoding digital images, wherein the encoding apparatus includes a processor configured for determining weights of a graph related to an image by minimizing a cost function, transforming the weights through a graph Fourier transform, quantizing the transformed weights, computing transformed coefficients through a graph Fourier transform of a graph having the transformed weights as weights, de-quantizing the quantized transformed weights, computing a reconstructed image through an inverse graph Fourier transform on the basis of the de-quantized transformed weights, computing a distortion cost on the basis of the reconstructed image and the original image, generating a final encoded image on the basis of the distortion cost.
    Type: Application
    Filed: November 29, 2017
    Publication date: July 16, 2020
    Inventors: Giulia Fracastoro, Dorina Thanou, Pascal Frossard
  • Patent number: 10296780
    Abstract: A three-dimensional image of the eardrum is automatically registered. In one aspect, a three-dimensional image (e.g., depth map) of an eardrum is produced from four-dimensional light field data captured by a light field otoscope. The three-dimensional image is registered according to a predefined standard form. The eardrum is then classified based on the registered three-dimensional image. Registration may include compensation for out-of-plane rotation (tilt), for in-plane rotation, for center location, for translation, and/or for scaling.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: May 21, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Sofia Karygianni, Leonidas Spinoulas, Manuel Martinello, Noah Bedard, Pascal Frossard, Ivana Tosic
  • Patent number: 10275644
    Abstract: Eardrums are automatically classified based on a feature set from a three-dimensional image of the eardrum, such as might be derived from a plenoptic image captured by a light field otoscope. In one aspect, a grid is overlaid onto the three-dimensional image of the eardrum. The grid partitions the three-dimensional image into cells. One or more descriptors are calculated for each of the cells, and the feature set includes the calculated descriptors. Examples of descriptors include various quantities relating to the depth and/or curvature of the eardrum. In another aspect, isocontour lines (of constant depth) are calculated for the three-dimensional image of the eardrum. One or more descriptors are calculated for the isocontour lines, and the feature set includes the calculated descriptors. Examples of descriptors include various quantities characterizing the isocontour lines.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: April 30, 2019
    Assignee: RICOH COMPANY, LTD
    Inventors: Leonidas Spinoulas, Sofia Karygianni, Manuel Martinello, Pascal Frossard, Ivana Tosic
  • Publication number: 20180260616
    Abstract: Eardrums are automatically classified based on a feature set from a three-dimensional image of the eardrum, such as might be derived from a plenoptic image captured by a light field otoscope. In one aspect, a grid is overlaid onto the three-dimensional image of the eardrum. The grid partitions the three-dimensional image into cells. One or more descriptors are calculated for each of the cells, and the feature set includes the calculated descriptors. Examples of descriptors include various quantities relating to the depth and/or curvature of the eardrum. In another aspect, isocontour lines (of constant depth) are calculated for the three-dimensional image of the eardrum. One or more descriptors are calculated for the isocontour lines, and the feature set includes the calculated descriptors. Examples of descriptors include various quantities characterizing the isocontour lines.
    Type: Application
    Filed: March 8, 2017
    Publication date: September 13, 2018
    Applicant: Ricoh Company, Ltd.
    Inventors: Leonidas Spinoulas, Sofia Karygianni, Manuel Martinello, Pascal Frossard, Ivana Tosic
  • Publication number: 20180260611
    Abstract: A three-dimensional image of the eardrum is automatically registered. In one aspect, a three-dimensional image (e.g., depth map) of an eardrum is produced from four-dimensional light field data captured by a light field otoscope. The three-dimensional image is registered according to a predefined standard form. The eardrum is then classified based on the registered three-dimensional image. Registration may include compensation for out-of-plane rotation (tilt), for in-plane rotation, for center location, for translation, and/or for scaling.
    Type: Application
    Filed: March 7, 2017
    Publication date: September 13, 2018
    Applicant: Ricoh Company, Ltd.
    Inventors: Sofia Karygianni, Leonidas Spinoulas, Manuel Martinello, Noah Bedard, Pascal Frossard, Ivana Tosic
  • Patent number: 9293130
    Abstract: A method for speech recognition, the method includes: extracting time-frequency speech features from a series of reference speech elements in a first series of sampling windows; aligning reference speech elements that are not of equal time span duration; constructing a common subspace for the aligned speech features; determining a first set of coefficient vectors; extracting a time-frequency feature image from a test speech stream spanned by a second sampling window; approximating the extracted image in the common subspace for the aligned extracted time-frequency speech features with a second coefficient vector; computing a similarity measure between the first and the second coefficient vector; determining if the similarity measure is below a predefined threshold; and wherein a match between the reference speech elements and a portion of the test speech stream is made in response to a similarity measure below a predefined threshold.
    Type: Grant
    Filed: May 2, 2008
    Date of Patent: March 22, 2016
    Assignee: Nuance Communications, Inc.
    Inventors: Lisa Amini, Pascal Frossard, Effrosyni Kokiopoulou, Oliver Verscheure
  • Patent number: 8514931
    Abstract: A method of providing SVC video content with added media content, comprising the steps of: receiving an original video content transmitted from a remote site in a bit stream and including original video encoding parameters; decoding said original video encoding parameters data; selecting a complementary media content to be added to the original video content; modifying said original video encoding parameters; modifying said bit stream in order to integrate the video data of said complementary media content to provide a modified bit stream; sending said modified bit stream for decoding; the additional media content being provided in the form of an additional layer into the scalable bit stream.
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: August 20, 2013
    Assignee: Ecole Polytechnique Federale de Lausanne (EPFL)
    Inventors: Jakov Cakareski, Pascal Frossard
  • Publication number: 20100238994
    Abstract: A method of providing SVC video content with added media content, comprising the steps of: receiving an original video content transmitted from a remote site in a bit stream and including original video encoding parameters; decoding said original video encoding parameters data; selecting a complementary media content to be added to the original video content; modifying said original video encoding parameters; modifying said bit stream in order to integrate the video data of said complementary media content to provide a modified bit stream; sending said modified bit stream for decoding; the additional media content being provided in the form of an additional layer into the scalable bit stream.
    Type: Application
    Filed: March 20, 2009
    Publication date: September 23, 2010
    Applicant: ECOLE POLYTECHNIQUE FEDERALE DE LAUSSANNE (EPFL)
    Inventors: Jakov Cakareski, Pascal Frossard
  • Patent number: 7657651
    Abstract: A resource-efficient live streaming system includes a broadcaster and a streaming server. The broadcaster receives a live feed and broadcasts a media stream to the streaming server containing several descriptions of the live feed along with control information. The broadcaster includes a stream thinner that implements a pruning algorithm. If descriptions from different streams are similar enough, one or more of them may be discarded without penalizing the quality of service perceived by the receivers. The streaming server assembles compressed data units into streams according to the control information from the broadcaster. The streaming server may also gather client feedback in order to estimate the status of the transmission channels and forwards the information to the broadcaster. The streaming server builds and streams media information to clients according to user preferences and receiver capabilities.
    Type: Grant
    Filed: February 2, 2007
    Date of Patent: February 2, 2010
    Assignee: International Business Machines Corporation
    Inventors: Lisa Amini, Pascal Frossard, Chitra Venkatramani, Olivier Verscheure, Peter Westerink
  • Patent number: 7623657
    Abstract: Techniques for securely and adaptively delivering multimedia content. It is assumed that a set of alternate access units for each time slot is obtained. Then, the encryption stream index of each access unit from the set of alternate access units of the previous time slot are obtained. An encryption stream index is then assigned to each access unit in the set of alternate access units in the current time slot, such that the encryption index increases over time. Thus, the invention overcomes the problem of encrypting a multimedia stream that may have multiple access units for each time slot by selecting the encryption index for each access unit such that the encryption index increases, regardless of which access unit the delivery system (e.g., server) selects for transmission.
    Type: Grant
    Filed: July 23, 2007
    Date of Patent: November 24, 2009
    Assignee: International Business Machines Corporation
    Inventors: Lisa D. Amini, Pascal Frossard, Chitra Venkatramani, Olivier Verscheure, Peter Westerink
  • Publication number: 20090276216
    Abstract: A method for speech recognition, the method includes: extracting time—frequency speech features from a series of reference speech elements in a first series of sampling windows; aligning reference speech elements that are not of equal time span duration; constructing a common subspace for the aligned speech features; determining a first set of coefficient vectors; extracting a time—frequency feature image from a test speech stream spanned by a second sampling window; approximating the extracted image in the common subspace for the aligned extracted time—frequency speech features with a second coefficient vector; computing a similarity measure between the first and the second coefficient vector; determining if the similarity measure is below a predefined threshold; and wherein a match between the reference speech elements and a portion of the test speech stream is made in response to a similarity measure below a predefined threshold.
    Type: Application
    Filed: May 2, 2008
    Publication date: November 5, 2009
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Lisa Amini, Pascal Frossard, Effrosyni Kokiopoulou, Oliver Verscheure
  • Patent number: 7526565
    Abstract: A system and method for streaming data over a communications network with varying streaming conditions, includes conditioning a data stream to create conditioned data representations including encoded representations targeting running conditions, wherein conditioning includes partitioning the data stream into data units, and generating the encoded representations of each of the data units, packaging the conditioned data representations with metadata specifying a target set of running conditions, wherein the conditioned data representations are packaged by pre-computing one or more trajectories among the encoded representations based on a given finite set of streaming conditions, observing a current run-time condition and selecting one of the packaged conditioned data representations for streaming over the computing network according to the running conditions in view of the current run-time condition in accordance with the observed current streaming condition, and a communications network responsive to the med
    Type: Grant
    Filed: April 3, 2003
    Date of Patent: April 28, 2009
    Assignee: International Business Machines Corporation
    Inventors: Lisa Amini, Pascal Frossard, Olivier Verscheure, Peter Westerink
  • Publication number: 20080013719
    Abstract: Techniques for securely and adaptively delivering multimedia content. It is assumed that a set of alternate access units for each time slot is obtained. Then, the encryption stream index of each access unit from the set of alternate access units of the previous time slot are obtained. An encryption stream index is then assigned to each access unit in the set of alternate access units in the current time slot, such that the encryption index increases over time. Thus, the invention overcomes the problem of encrypting a multimedia stream that may have multiple access units for each time slot by selecting the encryption index for each access unit such that the encryption index increases, regardless of which access unit the delivery system (e.g., server) selects for transmission.
    Type: Application
    Filed: July 23, 2007
    Publication date: January 17, 2008
    Applicant: International Business Machines Corporation
    Inventors: Lisa Amini, Pascal Frossard, Chitra Venkatramani, Olivier Verscheure, Peter Westerink
  • Patent number: 7313236
    Abstract: Techniques for securely and adaptively delivering multimedia content. It is assumed that a set of alternate access units for each time slot is obtained. Then, the encryption stream index of each access unit from the set of alternate access units of the previous time slot are obtained. An encryption stream index is then assigned to each access unit in the set of alternate access units in the current time slot, such that the encryption index increases over time. Thus, the invention overcomes the problem of encrypting a multimedia stream that may have multiple access units for each time slot by selecting the encryption index for each access unit such that the encryption index increases, regardless of which access unit the delivery system (e.g., server) selects for transmission.
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: December 25, 2007
    Assignee: International Business Machines Corporation
    Inventors: Lisa D. Amini, Pascal Frossard, Chitra Venkatramani, Olivier Verscheure, Peter Westerink
  • Publication number: 20070130359
    Abstract: A resource-efficient live streaming system includes a broadcaster and a streaming server. The broadcaster receives a live feed and broadcasts a media stream to the streaming server containing several descriptions of the live feed along with control information. The broadcaster includes a stream thinner that implements a pruning algorithm. If descriptions from different streams are similar enough, one or more of them may be discarded without penalizing the quality of service perceived by the receivers. The streaming server assembles compressed data units into streams according to the control information from the broadcaster. The streaming server may also gather client feedback in order to estimate the status of the transmission channels and forwards the information to the broadcaster. The streaming server builds and streams media information to clients according to user preferences and receiver capabilities.
    Type: Application
    Filed: February 2, 2007
    Publication date: June 7, 2007
    Inventors: Lisa Amini, Pascal Frossard, Chitra Venkatramani, Olivier Verscheure, Peter Westerink
  • Patent number: 7228535
    Abstract: Techniques for computing a multimedia stream schedule in a resource-constrained environment. In one aspect of the invention, a technique for processing multiple media streams in accordance with a resource-constrained environment includes the following steps/operations. An optimization associated with a composite representation of the multiple media streams is computed based on timing constraints associated with the multiple media streams and one or more constraints associated with at least one device in the resource-constrained environment useable to present at least one of the multiple media streams. Scheduling transmission and/or storage of the multiple media streams, based on the optimization, is then performed. The multiple media streams may be encoded, based on the optimization, prior to the scheduling step/operation.
    Type: Grant
    Filed: May 5, 2003
    Date of Patent: June 5, 2007
    Assignee: International Business Machines Corporation
    Inventors: Pascal Frossard, Zhen Liu, Olivier Verscheure
  • Patent number: 7006567
    Abstract: An apparatus and method to represent a video signal for improved source quality versus decoding complexity for a given compression rate and improved resistance against data loss when delivered over an error-prone network. The method comprises a 3-D matching pursuit algorithm with an improved 3-D dictionary. The 3-D MP encoder transforms blocks of frames into a set of spatio-temporal functions from the improved dictionary. The 3-D coder outputs a video stream that is highly resistant to data loss. Also, the proposed dictionary is optimized for source quality versus decoding complexity for a given compression rate.
    Type: Grant
    Filed: March 6, 2002
    Date of Patent: February 28, 2006
    Assignee: International Business Machines Corporation
    Inventors: Pascal Frossard, Pierre Vandergheynst, Olivier Verscheure
  • Publication number: 20040225744
    Abstract: Techniques for computing a multimedia stream schedule in a resource-constrained environment. In one aspect of the invention, a technique for processing multiple media streams in accordance with a resource-constrained environment includes the following steps/operations. An optimization associated with a composite representation of the multiple media streams is computed based on timing constraints associated with the multiple media streams and one or more constraints associated with at least one device in the resource-constrained environment useable to present at least one of the multiple media streams. Scheduling transmission and/or storage of the multiple media streams, based on the optimization, is then performed. The multiple media streams may be encoded, based on the optimization, prior to the scheduling step/operation.
    Type: Application
    Filed: May 5, 2003
    Publication date: November 11, 2004
    Applicant: International Business Machines Corporation
    Inventors: Pascal Frossard, Zhen Liu, Olivier Verscheure
  • Publication number: 20040215802
    Abstract: A resource-efficient live streaming system includes a broadcaster and a streaming server. The broadcaster receives a live feed and broadcasts a media stream to the streaming server containing several descriptions of the live feed along with control information. The broadcaster includes a stream thinner that implements a pruning algorithm. If descriptions from different streams are similar enough, one or more of them may be discarded without penalizing the quality of service perceived by the receivers. The streaming server assembles compressed data units into streams according to the control information from the broadcaster. The streaming server may also gather client feedback in order to estimate the status of the transmission channels and forwards the information to the broadcaster. The streaming server builds and streams media information to clients according to user preferences and receiver capabilities.
    Type: Application
    Filed: April 8, 2003
    Publication date: October 28, 2004
    Inventors: Lisa Amini, Pascal Frossard, Chitra Venkatramani, Olivier Verscheure, Peter Westerink
  • Publication number: 20040202320
    Abstract: Techniques for securely and adaptively delivering multimedia content. It is assumed that a set of alternate access units for each time slot is obtained. Then, the encryption stream index of each access unit from the set of alternate access units of the previous time slot are obtained. An encryption stream index is then assigned to each access unit in the set of alternate access units in the current time slot, such that the encryption index increases over time. Thus, the invention overcomes the problem of encrypting a multimedia stream that may have multiple access units for each time slot by selecting the encryption index for each access unit such that the encryption index increases, regardless of which access unit the delivery system (e.g., server) selects for transmission.
    Type: Application
    Filed: April 9, 2003
    Publication date: October 14, 2004
    Applicant: International Business Machines Corporation
    Inventors: Lisa D. Amini, Pascal Frossard, Chitra Venkatramani, Olivier Verscheure, Peter Westerink