Patents by Inventor Jelena Kovacevic
Jelena Kovacevic 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).
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System to enable rail infrastructure monitoring through the dynamic response of an operational train
Patent number: 10351150Abstract: This invention relates to a vehicle-based infrastructure diagnostic apparatus to assist in the maintenance of rail networks. This is a complete system—from the acquisition of vibration signals in a moving vehicle, to the presentation of the infrastructure changes to the maintenance workers. This apparatus relies on novel techniques to account for the variable speed of the train (making it useful even on non-dedicated rail vehicles) and novel techniques to normalize for various environmental conditions. This system could help maintenance departments identify and remediate anomalies more rapidly, as well as trace network deterioration over time. The apparatus consists of low-cost unobtrusive sensors, software for data analysis, and hardware that makes it easy to deploy widely even on existing rail networks.Type: GrantFiled: May 31, 2016Date of Patent: July 16, 2019Assignee: Carnegie Mellon UniversityInventors: George Lederman, Jacobo Bielak, Hae Young Noh, James H Garrett, Siheng Chen, Jelena Kovacevic -
Patent number: 10182711Abstract: A method of aiding the diagnosis of otitis media in a patient includes obtaining image data in a processor apparatus of a computing device, the image data being associated with at least one electronic image of a tympanic membrane of the patient, calculating, a plurality of image features, each image feature being calculated based on at least a portion of the image data, classifying the at least one electronic image as a particular type of otitis media using the plurality of image features, and outputting an indication of the particular type of otitis media. Also, a system for implementing such a method that includes an output device and a computing device.Type: GrantFiled: April 10, 2017Date of Patent: January 22, 2019Assignees: Carnegie Mellon University, University of Pittsburgh—Of the Commonwealth System of Higher EducationInventors: Alejandro Hoberman, Jelena Kovacevic, Nader Shaikh, Anupama Kuruvilla
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Patent number: 10136116Abstract: A scene is segmented into objects based on light field data for the scene, including based on image pixel values (e.g., intensity) and disparity map(s). In one aspect, the light field data is used to estimate one or more disparity maps for the scene taken from different viewpoints. The scene is then segmented into a plurality of regions that correspond to objects in the scene. Unlike other approaches, the regions can be variable-depth. In one approach, the regions are defined by boundaries. The boundaries are determined by varying the boundary to optimize an objective function for the region defined by the boundary. The objective function is based in part on a similarity function that measures a similarity of image pixel values for pixels within the boundary and also measures a similarity of disparities for pixels within the boundary.Type: GrantFiled: August 31, 2016Date of Patent: November 20, 2018Assignees: RICOH COMPANY, LTD., CARNEGIE MELLON UNIVERSITYInventors: Ivana Tosic, Anupama Kuruvilla, Kathrin Berkner, Jelena Kovacevic
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Publication number: 20170256059Abstract: A scene is segmented into objects based on light field data for the scene, including based on image pixel values (e.g., intensity) and disparity map(s). In one aspect, the light field data is used to estimate one or more disparity maps for the scene taken from different viewpoints. The scene is then segmented into a plurality of regions that correspond to objects in the scene. Unlike other approaches, the regions can be variable-depth. In one approach, the regions are defined by boundaries. The boundaries are determined by varying the boundary to optimize an objective function for the region defined by the boundary. The objective function is based in part on a similarity function that measures a similarity of image pixel values for pixels within the boundary and also measures a similarity of disparities for pixels within the boundary.Type: ApplicationFiled: August 31, 2016Publication date: September 7, 2017Applicants: Carnegie Mellon UniversityInventors: Ivana Tosic, Anupama Kuruvilla, Kathrin Berkner, Jelena Kovacevic
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Publication number: 20170209078Abstract: A method of aiding the diagnosis of otitis media in a patient includes obtaining image data in a processor apparatus of a computing device, the image data being associated with at least one electronic image of a tympanic membrane of the patient, calculating, a plurality of image features, each image feature being calculated based on at least a portion of the image data, classifying the at least one electronic image as a particular type of otitis media using the plurality of image features, and outputting an indication of the particular type of otitis media. Also, a system for implementing such a method that includes an output device and a computing device.Type: ApplicationFiled: April 10, 2017Publication date: July 27, 2017Applicants: UNIVERSITY OF PITTSBURGH-OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION, CARNEGIE MELLON UNIVERSITYInventors: ALEJANDRO HOBERMAN, JELENA KOVACEVIC, NADER SHAIKH, ANUPAMA KURUVILLA
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Patent number: 9636007Abstract: A method of aiding the diagnosis of otitis media in a patient includes obtaining image data in a processor apparatus of a computing device, the image data being associated with at least one electronic image of a tympanic membrane of the patient, calculating a plurality of image features, each image feature being calculated based on at least a portion of the image data, classifying the at least one electronic image as a particular type of otitis media using the plurality of image features, and outputting an indication of the particular type of otitis media. Also, a system for implementing such a method that includes an output device and a computing device.Type: GrantFiled: June 11, 2013Date of Patent: May 2, 2017Assignees: Carnegie Mellon University, University of Pittsburgh—Of the Commonwealth System of Higher EducationInventors: Alejandro Hoberman, Jelena Kovacevic, Nader Shaikh, Anupama Kuruvilla
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Patent number: 9215527Abstract: A speech separating digital signal processing system and algorithms for implementing speech separation combine beam-forming with residual noise suppression, such as computational auditory scene analysis (CASA) using a beam-former that has a primary lobe steered toward the source of speech by a control value generated from an adaptive filter. An estimator estimates the ambient noise and provides an input to the residual noise suppressor, and a post-filter may be used to noise-reduce the output of the estimator using a time-varying filter that compares two or more outputs of the beam-former with a quasi-stationary model of the speech and ambient noise.Type: GrantFiled: April 13, 2010Date of Patent: December 15, 2015Assignee: CIRRUS LOGIC, INC.Inventors: Zoran M. Saric, Stanislav Ocovaj, Robert Peckai-Kovac, Jelena Kovacevic
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Publication number: 20150305609Abstract: A method of aiding the diagnosis of otitis media in a patient includes obtaining image data in a processor apparatus of a computing device, the image data being associated with at least one electronic image of a tympanic membrane of the patient, calculating a plurality of image features, each image feature being calculated based on at least a portion of the image data, classifying the at least one electronic image as a particular type of otitis media using the plurality of image features, and outputting an indication of the particular type of otitis media. Also, a system for implementing such a method that includes an output device and a computing device.Type: ApplicationFiled: June 11, 2013Publication date: October 29, 2015Applicants: CARNEGIE MELLON UNIVERSITY, UNIVERSITY OF PITTSBURGH-OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATIONInventors: ALEJANDRO HOBERMAN, JELENA KOVACEVIC, NADER SHAIKH, ANUPAMA KURUVILLA
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Patent number: 6983243Abstract: A multiple description coder generates a number of different descriptions of a given portion of a signal in a wireless communication system, using multiple description scalar quantization (MDSQ) or another type of multiple description coding. The different descriptions of the given portion of the signal are then arranged into packets such that at least a first description of the given portion is placed in a first packet and a second description is placed in a second packet. Each of the packets are then transmitted using a frequency hopping modulator, and the hopping rate of the modulator is selected or otherwise configured based at least in part on the number of descriptions generated for the different portions of the signal.Type: GrantFiled: October 27, 2000Date of Patent: January 3, 2006Assignee: Lucent Technologies Inc.Inventors: Vivek K. Goyal, Jelena Kovacevic, Francois Masson
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Patent number: 6865587Abstract: Interpolating filter banks are constructed for use with signals which may be represented as a lattice of arbitrary dimension d. The filter banks include M channels, where M is greater than or equal to two. A given filter bank is built by first computing a set of shifts ?i as D?1 ti, i=1, 2, . . . M?1, where ti is a set of coset representatives taken from a unit cell of the input signal lattice, and D is a dilation matrix having a determinant equal to M. A polynomial interpolation algorithm is then applied to determine weights for a set of M?1 predict filters Pi having the shifts ?i. A corresponding set of update filters Ui are then selected as Ui=P*i/M, where P*i is the adjoint of the predict filter Pi. The resulting predict and update filters are arranged in a lifting structure such that each of the predict and update filters are associated with a pair of the M channels of the filter bank.Type: GrantFiled: February 27, 2001Date of Patent: March 8, 2005Assignee: Lucent Technologies Inc.Inventors: Jelena Kovacevic, Wim Sweldens
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Patent number: 6732119Abstract: The invention provides a perceptually-based system for pattern retrieval and matching, suitable for use in a wide variety of information processing applications. An illustrative embodiment of the system uses a predetermined vocabulary comprising one or more dimensions to extract color and texture information from an information signal, e.g., an image, selected by a user. The system then generates a distance measure characterizing the relationship of the selected image to another image stored in a database, by applying a grammar, comprising a set of predetermined rules, to the color and texture information extracted from the selected image and corresponding color and texture information associated with the stored image. The vocabulary may include dimensions such as overall color, directionality and orientation, regularity and placement, color purity, and pattern complexity and heaviness.Type: GrantFiled: July 3, 2002Date of Patent: May 4, 2004Assignee: Lucent Technologies Inc.Inventors: S. Kicha Ganapathy, Jianying Hu, Jelena Kovacevic, Aleksandra Mojsilovic, Robert James Safranek
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Patent number: 6594627Abstract: A lattice-structured multiple description vector quantization (LSMDVQ) encoder generates M descriptions of a signal to be encoded, each of the descriptions being transmittable over a corresponding one of M channels. The encoder is configured based at least in part on a distortion measure which is a function of a central distortion and at least one side distortion. For example, if M=2, the distortion measure may be an average mean-squared error (AMSE) function of the form ƒ(D0, D1, D2), where D0 is a central distortion resulting from reconstruction based on receipt of both a first and a second description, and D1 and D2 are side distortions resulting from reconstruction using only a first description and a second description, respectively. Further performance improvements may be obtained through perturbation of the lattice points.Type: GrantFiled: March 23, 2000Date of Patent: July 15, 2003Assignee: Lucent Technologies Inc.Inventors: Vivek K. Goyal, Jonathan Adam Kelner, Jelena Kovacevic
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Publication number: 20030044062Abstract: The invention provides a perceptually-based system for pattern retrieval and matching, suitable for use in a wide variety of information processing applications. An illustrative embodiment of the system uses a predetermined vocabulary comprising one or more dimensions to extract color and texture information from an information signal, e.g., an image, selected by a user. The system then generates a distance measure characterizing the relationship of the selected image to another image stored in a database, by applying a grammar, comprising a set of predetermined rules, to the color and texture information extracted from the selected image and corresponding color and texture information associated with the stored image. The vocabulary may include dimensions such as overall color, directionality and orientation, regularity and placement, color purity, and pattern complexity and heaviness.Type: ApplicationFiled: July 3, 2002Publication date: March 6, 2003Applicant: Lucent Technologies Inc.Inventors: S. Kicha Ganapathy, Jianying Hu, Jelena Kovacevic, Aleksandra Mojsilovic, Robert James Safranek
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Patent number: 6526176Abstract: Processing of quadtree data structures is significantly improved with the use of an indexing that is arranged to insure that the index value of a node in column/row i and column/row j differs from the index value of a node in column/row k and row/column i by a value that is constant. With such an indexing arrangement, no indexing information, or pointer information, needs to be stored. Moreover, traversal from any node to any other node can be accomplished with a single calculation followed by a single traversal which, in the context of this disclosure, is considered to be a single step.Type: GrantFiled: October 21, 1999Date of Patent: February 25, 2003Assignee: Lucent Technologies Inc.Inventors: Jelena Kovacevic, Martin Vetterli, Laurent Lorenzo Balmelli-Quadranti
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Patent number: 6487554Abstract: The invention provides a perceptually-based system for pattern retrieval and matching, suitable for use in a wide variety of information processing applications. An illustrative embodiment of the system uses a predetermined vocabulary comprising one or more dimensions to extract color and texture information from an information signal, e.g., an image, selected by a user. The system then generates a distance measure characterizing the relationship of the selected image to another image stored in a database, by applying a grammar, comprising a set of predetermined rules, to the color and texture information extracted from the selected image and corresponding color and texture information associated with the stored image. The vocabulary may include dimensions such as overall color, directionality and orientation, regularity and placement, color purity, and pattern complexity and heaviness.Type: GrantFiled: October 30, 2001Date of Patent: November 26, 2002Assignee: Lucent Technologies Inc.Inventors: S. Kicha Ganapathy, Jianying Hu, Jelena Kovacevic, Aleksandra Mojsilovic, Robert James Safranek
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Publication number: 20020099721Abstract: The invention provides a perceptually-based system for pattern retrieval and matching, suitable for use in a wide variety of information processing applications. An illustrative embodiment of the system uses a predetermined vocabulary comprising one or more dimensions to extract color and texture information from an information signal, e.g., an image, selected by a user. The system then generates a distance measure characterizing the relationship of the selected image to another image stored in a database, by applying a grammar, comprising a set of predetermined rules, to the color and texture information extracted from the selected image and corresponding color and texture information associated with the stored image. The vocabulary may include dimensions such as overall color, directionality and orientation, regularity and placement, color purity, and pattern complexity and heaviness.Type: ApplicationFiled: October 30, 2001Publication date: July 25, 2002Applicant: Lucent Technologies Inc.Inventors: S. Kicha Ganapathy, Jianying Hu, Jelena Kovacevic, Aleksandra Mojsilovic, Robert James Safranek
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Patent number: 6411953Abstract: The invention provides a perceptually-based system for pattern retrieval and matching, suitable for use in a wide variety of information processing applications. An illustrative embodiment of the system uses a predetermined vocabulary comprising one or more dimensions to extract color and texture information from an information signal, e.g., an image, selected by a user. The system then generates a distance measure characterizing the relationship of the selected image to another image stored in a database, by applying a grammar, comprising a set of predetermined rules, to the color and texture information extracted from the selected image and corresponding color and texture information associated with the stored image. The vocabulary may include dimensions such as overall color, directionality and orientation, regularity and placement, color purity, and pattern complexity and heaviness.Type: GrantFiled: January 25, 1999Date of Patent: June 25, 2002Assignee: Lucent Technologies Inc.Inventors: S. Kicha Ganapathy, Jianying Hu, Jelena Kovacevic, Aleksandra Mojsilovic, Robert James Safranek
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Patent number: 6345125Abstract: A multiple description (MD) joint source-channel (JSC) encoder in accordance with the invention encodes n components of a signal for transmission over in channels of a communication medium. In illustrative embodiments, the invention provides optimal or near-optimal transforms for applications in which at least one of n and m is greater than two, and applications in which the failure probabilities of the m channels are non-independent and non-equivalent. The signal to be encoded may be a data signal, a speech signal, an audio signal, an image signal, a video signal or other type of signal, and each of the m channels may correspond to a packet or a group of packets to be transmitted over the medium. A given n×m transform implemented by the MD JSC encoder may be in the form of a cascade structure of several transforms each having dimension less than n×m. The transform may also be configured to provide a substantially equivalent rate for each of the m channels.Type: GrantFiled: February 25, 1998Date of Patent: February 5, 2002Assignee: Lucent Technologies Inc.Inventors: Vivek K. Goyal, Jelena Kovacevic
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Patent number: 6330370Abstract: A multiple description (MD) joint source-channel (JSC) encoder in accordance with the invention encodes n components of an image signal for transmission over m channels of a communication medium. In an illustrative embodiment which uses statistical redundancy between the different descriptions of the image signal, the encoder forms vectors from transform coefficients of the image signal separated both in frequency and in space. The vectors may be formed such that the spatial separation between the transform coefficients is maximized. A correlating transform is then applied, followed by entropy coding, grouping as a function of frequency, and application of a cascade transform. In an illustrative embodiment which uses deterministic redundancy between the different descriptions of the image signal, the encoder may apply a linear transform, followed by quantization, to generate the multiple descriptions of the image signal.Type: GrantFiled: September 30, 1998Date of Patent: December 11, 2001Assignee: Lucent Technologies Inc.Inventors: Vivek K. Goyal, Jelena Kovacevic, Martin Vetterli
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Patent number: 6301222Abstract: A signal transmission system assigns portions of an image or other type of signal to packets so as to provide an approximate equalization of the signal energy across the packets. As a result, the quality of a reconstructed signal in the presence of a given amount of packet loss is substantially the same regardless of the particular packets which are lost. In one possible implementation, the signal is separated into subbands using a cosine-modulated orthonormal filter bank. The subbands are then assigned to packets in accordance with an energy equalization algorithm such that the cumulative energies of the packets are approximately equal. In another implementation, an image signal is scrambled such that pixels in the image are mapped to different spatial positions, thereby producing a whitened image. The whitened image is then separated into subbands, and the subbands are assigned deterministically to the packets. Similar whitening techniques can be also used with non-image signals.Type: GrantFiled: October 24, 1997Date of Patent: October 9, 2001Assignee: Lucent Technologies Inc.Inventors: Jelena Kovacevic, Francis Man Lung Ng