Patents by Inventor Tanushyam Chattopadhyay
Tanushyam Chattopadhyay 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: 10277682Abstract: A method and system has been provided for recommending features for developing an IoT analytics application. The method follows a deep like architecture. It comprises of three distinct layers. First layer is for input signal processing and other two layers are for feature reduction. The time domain, frequency domain and time-frequency domain features are extracted from the input signal. The invention uses multiple feature selection methods so that the union of the recommended features by these feature selection methods is significantly lesser than the initial set of features. The best feature combination is recommended using an exhaustive search.Type: GrantFiled: November 20, 2017Date of Patent: April 30, 2019Assignee: Tata Consultancy Services LimitedInventors: Swagata Biswas, Tanushyam Chattopadhyay, Arpan Pal, Snehasis Banerjee, Utpal Garin
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Patent number: 10198694Abstract: A system and method for identifying an unknown person based on a static posture of the unknown person is described. The method includes receiving data of N skeleton joints of the unknown person from a skeleton recording device. The method further includes identifying the static posture of the unknown person. The method includes dividing a skeleton structure of the unknown person in a plurality of body parts based on joint types of the skeleton structure. In addition, the method includes extracting feature vectors for each of the joint type from each of the plurality of body parts. The method further includes identifying the unknown person based on comparison of the feature vectors for the unknown person with one of a constrained feature dataset and an unconstrained feature dataset for a plurality of known persons.Type: GrantFiled: January 2, 2015Date of Patent: February 5, 2019Assignee: Tata Consultancy Services LimitedInventors: Kingshuk Chakravarty, Ramu Reddy Vempada, Tanushyam Chattopadhyay, Aniruddha Sinha, Arpan Pal
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Publication number: 20180146047Abstract: A method and system has been provided for recommending features for developing an IoT analytics application. The method follows a deep like architecture. It comprises of three distinct layers. First layer is for input signal processing and other two layers are for feature reduction. The time domain, frequency domain and time-frequency domain features are extracted from the input signal. The invention uses multiple feature selection methods so that the union of the recommended features by these feature selection methods is significantly lesser than the initial set of features. The best feature combination is recommended using an exhaustive search.Type: ApplicationFiled: November 20, 2017Publication date: May 24, 2018Applicant: Tata Consultancy Services LimitedInventors: Swagata BISWAS, Tanushyam CHATTOPADHYAY, Arpan Pal, Snehasis Banerjee, Utpal GARIN
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Patent number: 9924870Abstract: A method for monitoring physiological parameters associated with a subject using a hand held device is described herein. In an implementation, the method includes obtaining a plurality of sample photoplethysmographic (PPG) features associated with a sample subject, from a video of a body part of the sample subject. From among the plurality of sample PPG features, at least one relevant sample PPG feature associated with the physiological parameter, is selected based on a ground truth value of the physiological parameter for the subject. Further, based on the at least one relevant sample PPG feature and the ground truth value of the physiological parameter, a mathematical model indicative of a correlation between the relevant sample PPG feature and the physiological parameter, is determined. The mathematical model can be deployed for monitoring the physiological parameter in real time.Type: GrantFiled: July 28, 2014Date of Patent: March 27, 2018Assignee: TATA CONSULTANCY SERVICES LIMITEDInventors: Aishwarya Visvanathan, Arpan Pal, Anirban Dutta Choudhury, Tanushyam Chattopadhyay, Anurag Kumar, Rohan Banerjee, Aniruddha Sinha
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Patent number: 9922263Abstract: The present disclosure relates to a system and a method for detection of touching characters in a media, characterized by segmentation of adjoining character spaces. In the very first step, an aspect ratio is calculated for each connected component. A candidate touching position of each character is determined by calculating a threshold aspect ratio for each character. Further, a candidate cut column is determined based on a relation between column pixel densities and corresponding length thereof the column in order to segment the touching characters at the candidate cut column.Type: GrantFiled: March 20, 2013Date of Patent: March 20, 2018Assignees: TATA CONSULTANCY SERVICES LIMITED, INDIAN STATISTICAL INSTITUTEInventors: Tanushyam Chattopadhyay, Arpan Pal, Aniruddha Sinha, Utpal Garain
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Patent number: 9830736Abstract: Disclosed is a method for segmenting a plurality of objects from a two-dimensional (2D) video captured through a depth camera and an RGB/G camera. The method comprises detecting camera motion in each 2D frame of the plurality of 2D frames from the 2D video and generate a first set of 2D frames without any camera motion. The method further comprises generating a plurality of cloud points for the first set of 2D frames corresponding to each pixel associated a 2D frames in the first set of 2D frames. The method further comprises generating a 3D grid comprising a plurality of voxels. The method further comprises determining valid voxels and an invalid voxels in the 3D grid. Further, a 3D connected component labeling technique is applied on to the set of valid voxels to segment the plurality of objects in the 2D video.Type: GrantFiled: January 22, 2014Date of Patent: November 28, 2017Assignee: TATA CONSULTANCY SERVICES LIMITEDInventors: Aniruddha Sinha, Tanushyam Chattopadhyay, Sangheeta Roy, Apurbaa Mallik
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Patent number: 9767622Abstract: A system and method for a real-time prognosis of a vehicle comprising a personal communication device comprising an arbitrarily oriented three-axis accelerometer configured to capture a pitch motion and/or roll motion of the vehicle and an onboard diagnostics system communicably connected with the personal communication device enabling bi-directional communication. The personal communication device comprising a processor configured for geometric mapping of a three dimensional Cartesian coordinate of the three-axis accelerometer with the vehicle. The processor virtually orients the coordinates of three-axis accelerometer to coincide with the coordinates of the vehicle. The arbitrarily oriented three-axis accelerometer is configured to capture a road condition and a driver behavior using a sampling rate between 4 Hertz (Hz) to 10 Hertz (Hz).Type: GrantFiled: March 5, 2013Date of Patent: September 19, 2017Assignee: TATA CONSULTANCY SERVICES LIMITEDInventors: Arpan Pal, Chirabrata Bhaumik, Kallol Ghosh, Provat Biswas, Aniruddha Sinha, Tanushyam Chattopadhyay, Arijit Sinharay, Mohd Bilal Arif Syed
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Patent number: 9679218Abstract: Disclosed is a method and apparatus for computation and processing of an image for image matching. The apparatus here is configured to pre-process plurality of images for creating an image template. Next, the test image is extracted and pre-processed for assessing the degree of match between the test image components and the image components of the images in the image template, based a position based matching score, a feature based matching score or both.Type: GrantFiled: April 25, 2014Date of Patent: June 13, 2017Assignee: Tata Consultancy Services LimitedInventors: Aishwarya Visvanathan, Tanushyam Chattopadhyay
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Patent number: 9589203Abstract: A processor implemented system and method for identification of an activity performed by a subject based on sensor data analysis is described herein. In an implementation, the method includes capturing movements of the subject in real-time using a sensing device. At least one action associated with the subject is ascertained from a predefined set of actions. From the predefined set of actions, a plurality of actions can collectively form at least one activity. The ascertaining is based on captured movements of the subject and at least one predefined action rule. The at least one action rule is based on context-free grammar (CFG) and is indicative of a sequence of actions for occurrence of the at least one activity. Further, a current activity performed by the subject is dynamically determined, based on the at least one action and an immediately preceding activity, using a non-deterministic push-down automata (NPDA) state machine.Type: GrantFiled: March 23, 2015Date of Patent: March 7, 2017Assignee: TATA Consultancy Services LimitedInventors: Dipti Prasad Mukherjee, Tamal Batabyal, Tanushyam Chattopadhyay
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Patent number: 9557178Abstract: An indoor positioning system and method of localizing a person/object in an indoor environment by identifying the orientation and direction of a person/object to provide a true location of the person/object without navigation errors. The system comprises magnets disposed on a doorway to create a unique magnetic field; a wireless communication unit comprising a magnetometer sensor to sense perturbations in each of the unique magnetic fields in the event that the person/object with the wireless communication unit passes through the doorway, and generate corresponding signals; a processor receiving the signals and extracting data from the same; and a backend server wirelessly communicating with the wireless communication unit, the backend server processing the data sample received from the wireless communication unit to identify the opening and the wireless communication unit to localize the person/object.Type: GrantFiled: August 4, 2014Date of Patent: January 31, 2017Assignee: Tata Consultancy Services Ltd.Inventors: Avik Ghose, Arpan Pal, Anirban Dutta Choudhury, Vivek Chandel, Chirabrata Bhaumik, Tanushyam Chattopadhyay
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Patent number: 9536145Abstract: A System and method for identifying one or more human activities in a human-computer interacting environment. Skeleton points associated with a human are received. A data variation factor for the skeleton points is calculated, and a set of skeleton points is selected based on the data variation factor. One or more features are defined from the set of skeleton points by identifying a variance in coordinates of the set of skeleton points by using one or more statistical parameters. The one or more features are used to identify the one or more human activities.Type: GrantFiled: December 19, 2014Date of Patent: January 3, 2017Assignee: TATA CONSULTANCY SERVICES LIMITEDInventors: Ramu Reddy Vempada, Tanushyam Chattopadhyay
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Publication number: 20160342905Abstract: A multi-dimensional sensor data analysis system and method is provided. The multi-dimensional sensor data analysis system receives indoor and outdoor location, online and physical activity, online and physical proximity and additional a plurality of inputs (specific to a user), for example, surrounding of the subject, physiological parameters of the subject and recent social status of the subject, both online and offline. The multi-dimensional sensor data analysis system processes these inputs along with the knowledge of past behavior and traditional parameters of location, proximity and activity by performing a multi-dimensional sensor data analysis fusion technique, producing one or more outputs, for example, predicting or determining a human behaviour to a given stimuli.Type: ApplicationFiled: May 20, 2016Publication date: November 24, 2016Applicant: TATA CONSULTANCY SERVICES LIMITEDInventors: AVIK GHOSE, ARPAN PAL, ARINDAM PAL, TANUSHYAM CHATTOPADHYAY, SANTA MAITI
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Patent number: 9430701Abstract: Disclosed is a system and method for detecting a human in an image, and a corresponding activity. The image is captured, wherein the image comprises a plurality of pixels having gray scale information and a depth information. The image is segmented into a plurality of segments based upon the depth information. A connected component analysis is performed on a segment in order to segregate the one or more objects into noisy objects and candidate objects, the noisy objects are eliminated from the segment. A plurality of features are extracted from the candidate objects, and are evaluated using a Hidden Markov Model (HMM) model in order to determine the candidate objects as one of the human or non-human. The corresponding activity associated with the human is detected based on a depth value associated with each pixel corresponding to the candidate object in the image.Type: GrantFiled: February 5, 2015Date of Patent: August 30, 2016Assignee: Tata Consultancy Services LimitedInventors: Sangheeta Roy, Tanushyam Chattopadhyay, Dipti Prasad Mukherjee
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Patent number: 9384729Abstract: The application provides a method and system for determinism in non-linear systems for speech processing, particularly automatic speech segmentation for building speech recognition systems. More particularly, the application enables a method and system for detecting boundary of coarticulated units from isolated speech using recurrence plot.Type: GrantFiled: July 18, 2012Date of Patent: July 5, 2016Assignee: Tata Consultancy Services LimitedInventors: Mohd Bilal Arif Syed, Arijit Sinharay, Tanushyam Chattopadhyay
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Publication number: 20160125253Abstract: Disclosed is a method and apparatus for computation and processing of an image for image matching. The apparatus here is configured to pre-process plurality of images for creating an image template. Next, the test image is extracted and pre-processed for assessing the degree of match between the test image components and the image components of the images in the image template, based a position based matching score, a feature based matching score or both.Type: ApplicationFiled: April 25, 2014Publication date: May 5, 2016Inventors: Aishwarya VISVANATHAN, Tanushyam CHATTOPADHYAY
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Patent number: 9275307Abstract: Disclosed is a method and system for automatic algorithm selection for image processing. The invention discloses the method and system for automatically selecting the correct algorithm(s) for a varying requirement of the image for processing. The selection of algorithm is completely automatic and guided by a plurality of machine learning approaches. The system here is configured to pre-process plurality of images for creating a training data. Next, the test image is extracted, pre-processed and matched for assessing the best possible match of algorithm for processing.Type: GrantFiled: May 23, 2014Date of Patent: March 1, 2016Assignee: TATA CONSULTANCY SERVICES LIMITEDInventors: Tanushyam Chattopadhyay, Ramu Vempada Reddy, Utpal Garain
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Publication number: 20160035124Abstract: Disclosed is a method for segmenting a plurality of objects from a two-dimensional (2D) video captured through a depth camera and an RGB/G camera. The method comprises detecting camera motion in each 2D frame of the plurality of 2D frames from the 2D video and generate a first set of 2D frames without any camera motion. The method further comprises generating a plurality of cloud points for the first set of 2D frames corresponding to each pixel associated a 2D frames in the first set of 2D frames. The method further comprises generating a 3D grid comprising a plurality of voxels. The method further comprises determining valid voxels and an invalid voxels in the 3D grid. Further, a 3D connected component labeling technique is applied on to the set of valid voxels to segment the plurality of objects in the 2D video.Type: ApplicationFiled: January 22, 2014Publication date: February 4, 2016Inventors: Aniruddha SINHA, Tanushyam CHATTOPADHYAY, Sangheeta ROY, Apurbaa MALLIK
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Publication number: 20150269744Abstract: A processor implemented system and method for identification of an activity performed by a subject based on sensor data analysis is described herein. In an implementation, the method includes capturing movements of the subject in real-time using a sensing device. At least one action associated with the subject is ascertained from a predefined set of actions. From the predefined set of actions, a plurality of actions can collectively form at least one activity. The ascertaining is based on captured movements of the subject and at least one predefined action rule. The at least one action rule is based on context-free grammar (CFG) and is indicative of a sequence of actions for occurrence of the at least one activity. Further, a current activity performed by the subject is dynamically determined, based on the at least one action and an immediately preceding activity, using a non-deterministic push-down automata (NPDA) state machine.Type: ApplicationFiled: March 23, 2015Publication date: September 24, 2015Inventors: Dipti Prasad MUKHERJEE, Tamal BATABYAL, Tanushyam CHATTOPADHYAY
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Patent number: 9117132Abstract: The present disclosure relates to designing of a hierarchy of feature vectors. In one embodiment, a method for facilitating design of a hierarchy of feature vectors while recognizing one or more characters in a video is disclosed. The method comprises collecting one or more features from each of the segments in a video frame extracted from a video; preparing multi-dimensional feature vectors to classify the one or more characters; calculating a minimum distance between the multi-dimensional features vectors of a test character and the multi-dimensional feature vectors of a pre-stored character template; selecting, with respect to a decreasing order of the minimum distance, the multi-dimensional feature vectors to design a hierarchy of the multi-dimensional feature vectors; and classifying the characters based on the hierarchy of the multi-dimensional feature vectors.Type: GrantFiled: November 15, 2013Date of Patent: August 25, 2015Assignee: TATA CONSULTANCY SERVICES LIMITEDInventors: Tanushyam Chattopadhyay, Bidyut B. Chaudhuri
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Publication number: 20150227784Abstract: Disclosed is a system and method for detecting a human in an image, and a corresponding activity. The image is captured, wherein the image comprises a plurality of pixels having gray scale information and a depth information. The image is segmented into a plurality of segments based upon the depth information. A connected component analysis is performed on a segment in order to segregate the one or more objects into noisy objects and candidate objects, the noisy objects are eliminated from the segment. A plurality of features are extracted from the candidate objects, and are evaluated using a Hidden Markov Model (HMM) model in order to determine the candidate objects as one of the human or non-human. The corresponding activity associated with the human is detected based on a depth value associated with each pixel corresponding to the candidate object in the image.Type: ApplicationFiled: February 5, 2015Publication date: August 13, 2015Inventors: Sangheeta ROY, Tanushyam CHATTOPADHYAY, Dipti Prasad MUKHERJEE