Patents by Inventor Abhijit Sinha
Abhijit Sinha 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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Patent number: 11636672Abstract: Techniques for estimating crop maturity using remote sensing imagery are disclosed. A method may include a step of providing a remote sensing image of crops acquired at an image acquisition time, for example, a synthetic aperture radar image acquired from a satellite. The method may also include a step of predicting a maturity level of the crops at the image acquisition time based on input crop maturity data from an input time and weather-based growth indication data from between the input time and the image acquisition time. The weather-based growth indication data may include growing degree day data. The method may further include a step of updating the predicted maturity level to an updated maturity level of the crops based on the remote sensing image and a response model relating remote sensing image information to crop maturity information. The predicting and updating steps may involve performing a particle filtering operation.Type: GrantFiled: October 12, 2020Date of Patent: April 25, 2023Inventors: Abhijit Sinha, Weikai Tan, Yifeng Li
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Patent number: 11330980Abstract: A Bowman's Refractive Index (BRI) for quantification of microdistortions in Bowman's Layer (BL) after Small Incision Lenticule Extraction (SMILE) is defined for a patient. BRI is summation of one or more areas of the OCT image of anterior edge of Bowman's layer, quantifies the smoothness of the Bowman's layer. The anterior edge of Bowman's layer is segmented into pixels. After segmentation, a 3rd order polynomial is curve fit to the segmented pixels of the edge of Bowman's layer. BRI is calculated by segmentation of the 3-Dimensional (3-D) OCT image. BRI acts as a marker for mechanical stability and is useful for diagnosis of disease and prognosis of treatments in human.Type: GrantFiled: December 8, 2016Date of Patent: May 17, 2022Assignee: Narayana Nethralaya FoundationInventors: Abhijit Sinha Roy, Rohit Shetty, Bhujang Shetty
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Patent number: 11191430Abstract: A Bowman's Refractive Index (BRI) for quantification of microdistortions in Bowman's Layer (BL) after Small Incision Lenticule Extraction (SMILE) is defined for a patient. BRI is summation of one or more areas of the OCT image of anterior edge of Bowman's layer, quantifies the smoothness of the Bowman's layer. The anterior edge of Bowman's layer is segmented into pixels. After segmentation, a 3rd order polynomial is curve fit to the segmented pixels of the edge of Bowman's layer. BRI is calculated by segmentation of the 3-Dimensional (3-D) OCT image. BRI acts as a marker for mechanical stability and is useful for diagnosis of disease and prognosis of treatments in human.Type: GrantFiled: December 8, 2016Date of Patent: December 7, 2021Assignee: Narayana Nethralaya FoundationInventors: Abhijit Sinha Roy, Rohit Shetty, Bhujang Shetty
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Patent number: 11177043Abstract: The invention relates to a system and method of implementation of artificial intelligence and tomography imaging to determine the biomechanical degradation or degeneration in human cornea. The invention relates to a combination tool using artificial intelligence and tomography imaging to map the region of degeneration in the cornea. The method of artificial intelligence and corneal tomography imaging includes analysis of changes in the structure of the cornea, constructing the 3D volumes using corneal tomography, meshing the 3D volumes with the elements for biomechanical simulations by using finite element modules, application of artificial intelligence to determine the region of biomechanical degeneration in cornea. The combination tool of the invention is effective in predicting the progression of the disease by analyzing the chronic steepening of the cornea by quantitating the parameters such as increase in curvature, aberrations of the cornea.Type: GrantFiled: March 14, 2018Date of Patent: November 16, 2021Assignee: Narayana Nethralaya FoundationInventors: Abhijit Sinha Roy, Rohit Shetty, Katkeri Bhujang Shetty
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Publication number: 20210110157Abstract: Techniques for estimating crop maturity using remote sensing imagery are disclosed. A method may include a step of providing a remote sensing image of crops acquired at an image acquisition time, for example, a synthetic aperture radar image acquired from a satellite. The method may also include a step of predicting a maturity level of the crops at the image acquisition time based on input crop maturity data from an input time and weather-based growth indication data from between the input time and the image acquisition time. The weather-based growth indication data may include growing degree day data. The method may further include a step of updating the predicted maturity level to an updated maturity level of the crops based on the remote sensing image and a response model relating remote sensing image information to crop maturity information. The predicting and updating steps may involve performing a particle filtering operation.Type: ApplicationFiled: October 12, 2020Publication date: April 15, 2021Inventors: Abhijit SINHA, Weikai TAN, Yifeng LI
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Publication number: 20200397283Abstract: The invention relates to a method to quantify human corneal tissue parameters to improve biomechanical modelling of refractive and therapeutic procedures to reduce or eliminate refractive errors and unwanted wavefront aberrations. The analysis of the preoperative biomechanical properties of cornea assists in predicting the postoperative biomechanical response of cornea. The computational models of extreme properties of the corneal tissue are conducted and the 3-D finite element models are populated with tomographic information of the cornea and artificial intelligence is trained to consider the pre-operative characteristics of the corneal tissue. The post-operative refractive procedures are simulated using the said finite element models. Finally, biomechanical deformations are prospectively estimated and method builds a deep learning approach to link clinical features to changes in biochemical outcomes.Type: ApplicationFiled: January 18, 2019Publication date: December 24, 2020Applicant: Narayana Nethralaya FoundationInventors: Abhijit Sinha Roy, Rohit Shetty, Mathew Francis, Rachana Chandapura
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Publication number: 20200013514Abstract: The invention relates to a system and method of implementation of artificial intelligence and tomography imaging to determine the biomechanical degradation or degeneration in human cornea. The invention relates to a combination tool using artificial intelligence and tomography imaging to map the region of degeneration in the cornea. The method of artificial intelligence and corneal tomography imaging includes analysis of changes in the structure of the cornea, constructing the 3D volumes using corneal tomography, meshing the 3D volumes with the elements for biomechanical simulations by using finite element modules, application of artificial intelligence to determine the region of biomechanical degeneration in cornea. The combination tool of the invention is effective in predicting the progression of the disease by analyzing the chronic steepening of the cornea by quantitating the parameters such as increase in curvature, aberrations of the cornea.Type: ApplicationFiled: March 14, 2018Publication date: January 9, 2020Inventors: Abhijit Sinha Roy, Rohit Shetty, Katkeri Bhujang Shetty
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Publication number: 20180353065Abstract: A Bowman's Refractive Index (BRI) for quantification of microdistortions in Bowman's Layer (BL) after Small Incision Lenticule Extraction (SMILE) is defined for a patient. BRI is summation of one or more areas of the OCT image of anterior edge of Bowman's layer, quantifies the smoothness of the Bowman's layer. The anterior edge of Bowman's layer is segmented into pixels. After segmentation, a 3rd order polynomial is curve fit to the segmented pixels of the edge of Bowman's layer. BRI is calculated by segmentation of the 3-Dimensional (3-D) OCT image. BRI acts as a marker for mechanical stability and is useful for diagnosis of disease and prognosis of treatments in human.Type: ApplicationFiled: December 8, 2016Publication date: December 13, 2018Inventors: Dr. Abhijit Sinha Roy, Rohit Shetty, Bhujang Shetty
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Patent number: 8812280Abstract: Systems and methods are provided for predicting the results of a therapeutic intervention to an eye. An imaging system is configured to provide image data representing at least a portion of the eye of the patient. An input device is configured to permit a user to design a proposed therapeutic intervention for the eye of the patient. A finite element modeling component is configured to generate a finite element model representing the condition of the eye of the patient after the proposed therapeutic intervention according to the image data, the proposed therapeutic intervention, and at least one biomechanical property of tissue comprising the eye. The generated model is constructed as to have no a priori restraints on the motion of the corneal limbus. A display is configured to display the generated model to the user.Type: GrantFiled: December 31, 2012Date of Patent: August 19, 2014Assignee: The Cleveland Clinic FoundationInventors: William J. Dupps, Jr., Abhijit Sinha Roy
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Patent number: 8346518Abstract: Systems and methods are provided for predicting the results of a therapeutic intervention to an eye. An imaging system is configured to provide image data representing at least a portion of the eye of the patient. An input device is configured to permit a user to design a proposed therapeutic intervention for the eye of the patient. A finite element modeling component is configured to generate a finite element model representing the condition of the eye of the patient after the proposed therapeutic intervention according to the image data, the proposed therapeutic intervention, and at least one biomechanical property of tissue comprising the eye. The generated model is constructed as to have no a priori restraints on the motion of the corneal limbus. A display is configured to display the generated model to the user.Type: GrantFiled: April 23, 2009Date of Patent: January 1, 2013Assignee: The Cleveland Clinic FoundationInventors: William J. Dupps, Jr., Abhijit Sinha Roy
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Patent number: 7626535Abstract: Various embodiments are described herein for a track quality based multi-target tracker and an associated method. The method includes associating a measurement with a track, generating measurement association statistics for the track, generating and updating a track quality value for a track based on a measurement-to-track association likelihood, and updating track lists based on the track quality value and the measurement association statistics of the tracks in these lists. The tracker includes structure for carrying out this method.Type: GrantFiled: June 1, 2007Date of Patent: December 1, 2009Assignee: Raytheon CompanyInventors: Zhen Ding, Abhijit Sinha, Thia Kirubarajan, Mohamad Farooq
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Publication number: 20090271155Abstract: Systems and methods are provided for predicting the results of a therapeutic intervention to an eye. An imaging system is configured to provide image data representing at least a portion of the eye of the patient. An input device is configured to permit a user to design a proposed therapeutic intervention for the eye of the patient. A finite element modeling component is configured to generate a finite element model representing the condition of the eye of the patient after the proposed therapeutic intervention according to the image data, the proposed therapeutic intervention, and at least one biomechanical property of tissue comprising the eye. The generated model is constructed as to have no a priori restraints on the motion of the corneal limbus. A display is configured to display the generated model to the user.Type: ApplicationFiled: April 23, 2009Publication date: October 29, 2009Inventors: William J. Dupps, JR., Abhijit Sinha Roy
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Publication number: 20080111730Abstract: Various embodiments are described herein for a track quality based multi-target tracker and an associated method. The method includes associating a measurement with a track, generating measurement association statistics for the track, generating and updating a track quality value for a track based on a measurement-to-track association likelihood, and updating track lists based on the track quality value and the measurement association statistics of the tracks in these lists. The tracker includes structure for carrying out this method.Type: ApplicationFiled: June 1, 2007Publication date: May 15, 2008Inventors: Zhen Ding, Abhijit Sinha, Thia Kirubarajan, Mohamad Farooq