Patents by Inventor Lalit K. Mestha
Lalit K. Mestha 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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Publication number: 20240031514Abstract: Systems and methods for medical imaging and spectroscopy analysis are disclosed. Some embodiments relate to digital staining. Some embodiments relate to digital staining using hyperspectral or multispectral imaging. Some embodiments relate to digital staining using RGB imaging. Some embodiments relate to analysis of other types of medical imaging and spectroscopy. Some embodiments relate to platform for performing analysis of medical imaging and spectroscopy data.Type: ApplicationFiled: October 11, 2023Publication date: January 25, 2024Inventors: Jeffrey N. Yu, Lalit K. Mestha, Sohail A. Dianat
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Patent number: 10219739Abstract: What is disclosed is a system and method for identifying a patient's breathing pattern for respiratory function assessment without contact and with a depth-capable imaging system. In one embodiment, a time-varying sequence of depth maps are received of a target region of a subject of interest over a period of inspiration and expiration. Once received, the depth maps are processed to obtain a breathing signal for the subject. The subject's breathing signal comprises a temporal sequence of instantaneous volumes. One or more segments of the subject's breathing signal are then compared against one or more reference breathing signals each associated with a known pattern of breathing. As a result of the comparison, a breathing pattern for the subject is identified. The identified breathing pattern is then used to assess the subject's respiratory function. The teachings hereof find their uses in an array of diverse medical applications. Various embodiments are disclosed.Type: GrantFiled: November 25, 2014Date of Patent: March 5, 2019Assignee: Xerox CorporationInventors: Lalit K. Mestha, Eribaweimon Shilla, Edgar A. Bernal, Graham Stephen Pennington, Himanshu Jayantkumar Madhu
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Patent number: 10201293Abstract: Systems and methods are proposed for non-contact monitoring of spatio-temporal mechanics comprising motion patterns of respiratory muscles, lungs and diaphragm. The depth capable sensors system is comprised of modules, including a depth estimation module, a reference shape generation module, a region of interest shape estimation module, and a shape comparison module. A recommender module is optionally included. The acquisition of spatio-temporal respiratory mechanic data comprising a time varying sequence of spatially dependent representations of the respiratory mechanics of the subject are processed for identifying differences between the subject's actual respiratory mechanics and desired mechanics that can improve the health of the subject, or identify particular maladies.Type: GrantFiled: March 24, 2014Date of Patent: February 12, 2019Assignee: XEROX CORPORATIONInventors: Edgar A. Bernal, Eribaweimon Shilla, Himanshu Madhu, Lalit K. Mestha, Robert P Loce
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Publication number: 20170262987Abstract: A method, non-transitory computer readable medium and apparatus for estimating a pulse transmit time (PTT) to calculate a blood pressure are disclosed. For example, the method includes receiving a series of video images over a period of time that includes a first location of an individual and a second location of the individual, calculating a first set of luminance values of the first location and a second set of luminance values of the second location, estimating the PTT based on an average time difference from consecutive peaks of the first set of luminance values and the second set of luminance values and transmitting the PTT to a blood pressure calculation device to calculate the blood pressure based on the PTT that is estimated.Type: ApplicationFiled: March 9, 2016Publication date: September 14, 2017Inventors: Nathan Gnanasambandam, Lalit K. Mestha
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Patent number: 9436277Abstract: A method for computing output using a non-contact (invisible) input signal includes acquiring depth data of a scene captured by a depth-capable sensor. The method includes generating a temporal series of depth maps corresponding to the depth data. The method includes generating at least one volumetric attribute from the depth data. The method includes generating an output based on the volumetric attribute to control actions.Type: GrantFiled: April 21, 2014Date of Patent: September 6, 2016Assignee: Xerox CorporationInventors: Michael R. Furst, Edgar A. Bernal, Robert P. Loce, Lalit K. Mestha
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Publication number: 20160157776Abstract: Systems and methods for assessing and managing stress of a user is provided. The system includes a wearable device that can be worn by the user; the wearable device include a sensing device for generating at least one time-series signal by continuous sensing of light intensity of light signals. The time-series signal includes at least one continuous photoplethysmographic (PPG) signal having an LF and an HF component. The system also includes a stress assessment device to determine a stress level of the agent based on a processing of the PPG signal. The stress assessment device further includes a feedback device configured by the processor to provide a feedback including at least one remedial message to the agent based on the determined stress level of the agent.Type: ApplicationFiled: December 8, 2014Publication date: June 9, 2016Inventors: Lalit K. MESTHA, Nischal Murthy PIRATLA, Xuejin WEN
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Patent number: 9270825Abstract: Embodiments of a system are disclosed for stress assessment of a call center agent while interacting with a customer. The system is for use with a communication network. The system includes a stress assessment device and an agent device that includes an imaging unit. The agent device is configured to capture video of a target region of exposed skin of the agent using the imaging unit, collect customer interaction data based on interaction with a customer device over the communication network, and communicate the captured video and the customer interaction data to the stress assessment device. The stress assessment device is configured to passively estimate agent stress-level based on the received video, and generate feedback to the agent based on correlation between the customer interaction data and the estimated stress-level over a predefined time interval.Type: GrantFiled: March 18, 2014Date of Patent: February 23, 2016Assignee: XEROX CORPORATIONInventors: Om D Deshmukh, Nischal Murthy Piratla, Lalit K Mestha
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Patent number: 9253420Abstract: A method is provided for using a single-pixel imager in order to spatially reconstruct an image of a scene. The method can comprise the following: configuring a light filtering device including an array of imaging elements to a spatially varying optical filtering process of incoming light according to a series of spatial patterns corresponding to sampling functions. The light filtering device can be a transmissive filter including a first membrane, a second membrane, and a variable gap therebetween. The method further comprises tuning a controller for manipulating a variable dimension of the gap; and, measuring, using a photodetector of the single-pixel imager, a magnitude of an intensity of the filtered light across pixel locations in the series of spatial patterns. The magnitude of the intensity can be equivalent to an integral value of the scene across the pixel locations.Type: GrantFiled: February 12, 2014Date of Patent: February 2, 2016Assignee: Xerox CorporationInventors: Peter J. Nystrom, Lalit K. Mestha, Edgar A. Bernal, Xuejin Wen, Peter Gulvin
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Patent number: 9219867Abstract: A method, non-transitory computer readable medium, and apparatus for compressive imaging of a scene in a single pixel camera are disclosed. For example, the method moves a pseudo-random pattern media behind an aperture until a pseudo-random sampling function of a plurality of pseudo-random sampling functions is viewable through the aperture, records a value of an intensity of a modulated light from the scene with a detector, wherein the intensity of the modulated light is representative of an inner product between the pseudo-random sampling function and an image of the scene and repeats the moving and the recording until a necessary number of a plurality of inner products are processed.Type: GrantFiled: March 27, 2014Date of Patent: December 22, 2015Assignee: Xerox CorporationInventors: Xuejin Wen, Edgar A. Bernal, Lalit K. Mestha
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Publication number: 20150301590Abstract: A method for computing output using a non-contact (invisible) input signal includes acquiring depth data of a scene captured by a depth-capable sensor. The method includes generating a temporal series of depth maps corresponding to the depth data. The method includes generating at least one volumetric attribute from the depth data. The method includes generating an output based on the volumetric attribute to control actions.Type: ApplicationFiled: April 21, 2014Publication date: October 22, 2015Applicant: Xerox CorporationInventors: Michael R. Furst, Edgar A. Bernal, Robert P. Loce, Lalit K. Mestha
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Patent number: 9165201Abstract: An embodiment generally relates to systems and methods for determining cell phone usage automatically by individuals operating vehicles. A processing module can process multi-spectral images or videos of individuals and detect different regions in the image such as face regions, hand regions, and cell phone regions. Further, the processing module can analyze the regions based on locations and numbers of skin pixels and cell phone pixels to determine if the individual is holding his or her cell phone near his or her face. Based on the analysis, it can be determined whether the individual is operating the cell phone. Further, the analysis can yield a confidence level associated with the cell phone usage.Type: GrantFiled: September 15, 2011Date of Patent: October 20, 2015Assignee: XEROX CORPORATIONInventors: Yeqing Zhang, Beilei Xu, Lalit K. Mestha, Graham Pennington
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Publication number: 20150281543Abstract: A method, non-transitory computer readable medium, and apparatus for compressive imaging of a scene in a single pixel camera are disclosed. For example, the method moves a pseudo-random pattern media behind an aperture until a pseudo-random sampling function of a plurality of pseudo-random sampling functions is viewable through the aperture, records a value of an intensity of a modulated light from the scene with a detector, wherein the intensity of the modulated light is representative of an inner product between the pseudo-random sampling function and an image of the scene and repeats the moving and the recording until a necessary number of a plurality of inner products are processed.Type: ApplicationFiled: March 27, 2014Publication date: October 1, 2015Applicant: Xerox CorporationInventors: Xuejin Wen, Edgar A. Bernal, Lalit K. Mestha
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Publication number: 20150265187Abstract: Systems and methods are proposed for non-contact monitoring of spatio-temporal mechanics comprising motion patterns of respiratory muscles, lungs and diaphragm. The depth capable sensors system is comprised of modules, including a depth estimation module, a reference shape generation module, a region of interest shape estimation module, and a shape comparison module. A recommender module is optionally included. The acquisition of spatio-temporal respiratory mechanic data comprising a time varying sequence of spatially dependent representations of the respiratory mechanics of the subject are processed for identifying differences between the subject's actual respiratory mechanics and desired mechanics that can improve the health of the subject, or identify particular maladies.Type: ApplicationFiled: March 24, 2014Publication date: September 24, 2015Applicant: Xerox CorporationInventors: Edgar A. Bernal, Eribaweimon Shilla, Himanshu Madhu, Lalit K. Mestha, Robert P. Loce
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Publication number: 20150271329Abstract: Embodiments of a system are disclosed for stress assessment of a call center agent while interacting with a customer. The system is for use with a communication network. The system includes a stress assessment device and an agent device that includes an imaging unit. The agent device is configured to capture video of a target region of exposed skin of the agent using the imaging unit, collect customer interaction data based on interaction with a customer device over the communication network, and communicate the captured video and the customer interaction data to the stress assessment device. The stress assessment device is configured to passively estimate agent stress-level based on the received video, and generate feedback to the agent based on correlation between the customer interaction data and the estimated stress-level over a predefined time interval.Type: ApplicationFiled: March 18, 2014Publication date: September 24, 2015Applicant: Xerox CorporationInventors: Om D. Deshmukh, Nischal Murthy Piratla, Lalit K. Mestha
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Publication number: 20150229851Abstract: A method is provided for using a single-pixel imager in order to spatially reconstruct an image of a scene. The method can comprise the following: configuring a light filtering device including an array of imaging elements to a spatially varying optical filtering process of incoming light according to a series of spatial patterns corresponding to sampling functions. The light filtering device can be a transmissive filter including a first membrane, a second membrane, and a variable gap therebetween. The method further comprises tuning a controller for manipulating a variable dimension of the gap; and, measuring, using a photodetector of the single-pixel imager, a magnitude of an intensity of the filtered light across pixel locations in the series of spatial patterns. The magnitude of the intensity can be equivalent to an integral value of the scene across the pixel locations.Type: ApplicationFiled: February 12, 2014Publication date: August 13, 2015Applicant: Xerox CorporationInventors: Peter J. Nystrom, Lalit K. Mestha, Edgar A. Bernal, Xuejin Wen, Peter Gulvin
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Patent number: 9020185Abstract: An embodiment generally relates to systems and methods for estimating heart rates of individuals using non-contact imaging. A processing module can process multi-spectral video images of individuals and detect skin blobs within different images of the multi-spectral video images. The skin blobs can be converted into time series signals and processed with a band pass filter. Further, the time series signals can be processed to separate pulse signals from unnecessary signals. The heart rate of the individual can be estimated according to the resulting time series signal processing.Type: GrantFiled: September 28, 2011Date of Patent: April 28, 2015Assignee: Xerox CorporationInventors: Lalit K. Mestha, Beilei Xu
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Publication number: 20150094597Abstract: What is disclosed is a system and method for identifying a patient's breathing pattern for respiratory function assessment without contact and with a depth-capable imaging system. In one embodiment, a time-varying sequence of depth maps are received of a target region of a subject of interest over a period of inspiration and expiration. Once received, the depth maps are processed to obtain a breathing signal for the subject. The subject's breathing signal comprises a temporal sequence of instantaneous volumes. One or more segments of the subject's breathing signal are then compared against one or more reference breathing signals each associated with a known pattern of breathing. As a result of the comparison, a breathing pattern for the subject is identified. The identified breathing pattern is then used to assess the subject's respiratory function. The teachings hereof find their uses in an array of diverse medical applications. Various embodiments are disclosed.Type: ApplicationFiled: November 25, 2014Publication date: April 2, 2015Inventors: Lalit K. Mestha, Eribaweimon Shilla, Edgar A. Bernal, Graham Stephen Pennington, Himanshu Jayantkumar Madhu
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Patent number: 8977004Abstract: A system and method of localizing vascular patterns by receiving frames from a video camera, identifying and tracking an object within the frames, determining temporal features associated with the object; and localizing vascular patterns from the frames based on the temporal features associated with the object.Type: GrantFiled: December 11, 2012Date of Patent: March 10, 2015Assignee: Xerox CorporationInventors: Yi Liu, Beilei Xu, Robert P Loce, Wencheng Wu, Lalit K Mestha, Edgar A Bernal
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Publication number: 20140161307Abstract: A system and method of localizing vascular patterns by receiving frames from a video camera, identifying and tracking an object within the frames, determining temporal features associated with the object; and localizing vascular patterns from the frames based on the temporal features associated with the object.Type: ApplicationFiled: December 11, 2012Publication date: June 12, 2014Applicant: XEROX CORPORATIONInventors: Yi Liu, Beilei Xu, Robert P. Loce, Wencheng Wu, Lalit K. Mestha, Edgar A. Bernal
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Patent number: 8711429Abstract: A user of an image forming device selects from among a plurality of pre-stored color rendition dictionaries (CRDs) in order that a set of system process parameter setpoints associated with that CRD may be referenced to bias and/or skew an available color gamut in the direction of a particular nominally out-of-gamut color which the user wishes to produce in a color image output by the image forming device. A capability is included in a color image forming device store and/or update multiple sets of special process parameter setpoints defining a plurality of CRDs each of which may be identified and associated with a specific color in order that requests to print out-of-gamut colors may be satisfied routinely as exceptions to a nominal gamut based on a nominal set of stored setpoints when a CRD is selected and the setpoints associated with that CRD are input for reference by the color image forming device on a temporary basis.Type: GrantFiled: April 6, 2005Date of Patent: April 29, 2014Inventors: Lalit K. Mestha, Tonya L. Love, Ta-Chen Hsu, Patricia J. Donaldson