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公开(公告)号：US09924870B2
公开(公告)日：2018-03-27
申请号：US14444745
申请日：2014-07-28
Applicant: TATA CONSULTANCY SERVICES LIMITED
Inventor： Aishwarya Visvanathan , Arpan Pal , Anirban Dutta Choudhury , Tanushyam Chattopadhyay , Anurag Kumar , Rohan Banerjee , Aniruddha Sinha
IPC: G06K9/00 , A61B5/00 , A61B5/0205 , A61B5/1455 , A61B5/0402 , A61B5/024 , A61B5/021 , A61B5/08
CPC classification number: A61B5/0059 , A61B5/0205 , A61B5/021 , A61B5/02416 , A61B5/02438 , A61B5/04028 , A61B5/08 , A61B5/14551 , A61B5/6898 , A61B5/7267 , A61B2505/07 , G06F19/00
Abstract: 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.
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Patent Agency Ranking
公开(公告)号：US09679218B2
公开(公告)日：2017-06-13
申请号：US14889946
申请日：2014-04-25
Applicant: Tata Consultancy Services Limited
Inventor： Aishwarya Visvanathan , Tanushyam Chattopadhyay
CPC classification number: G06K9/3258 , G06K9/40 , G06K9/4671 , G06K9/6202 , G06K9/6211 , G06K2209/01 , G06K2209/15
Abstract: 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.
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公开(公告)号：US20160113531A1
公开(公告)日：2016-04-28
申请号：US14665657
申请日：2015-03-23
Applicant: Tata Consultancy Services Limited
Inventor： Aishwarya Visvanathan , Arpan Pal , Aniruddha Sinha , Rohan Banerjee , Anirban Dutta Choudhury , Aditi Mishra , Avik Ghose
IPC: A61B5/024 , A61B5/1455 , A61B5/00 , A61B5/021
CPC classification number: A61B5/02416 , A61B5/0082 , A61B5/02438 , A61B5/14551 , A61B2560/0238
Abstract: A physiological parameter measurement device comprising a processor and a video processing module coupled to the processor to divide each of a plurality of frames of a video into a plurality of blocks, where the video is of a body part of a subject whose physiological parameter is to be determined. The video processing module further is to select a block having highest peak signal to noise ratio (PSNR) from amongst the plurality of blocks. Further, the video processing module is to extract a photoplethysmogram (PPG) signal from the video based on a block identifier associated with the block. The physiological parameter measurement device further comprises a signal enhancement module coupled to the processor, to process the PPG signal to obtain an enhanced PPG signal for determining a value of the physiological parameter for the subject.
Abstract translation: 一种生理参数测量装置，包括处理器和视频处理模块，所述处理器和视频处理模块耦合到所述处理器，以将视频的多个帧中的每一个划分成多个块，其中所述视频是其生理参数为 确定。 视频处理模块还要从多个块中选择具有最高峰值信噪比（PSNR）的块。 此外，视频处理模块基于与该块相关联的块标识符从视频提取光电容积图（PPG）信号。 生理参数测量装置还包括耦合到处理器的信号增强模块，以处理PPG信号以获得用于确定对象的生理参数的值的增强的PPG信号。
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公开(公告)号：US10890444B2
公开(公告)日：2021-01-12
申请号：US15154476
申请日：2016-05-13
Applicant: Tata Consultancy Services Limited
Inventor： Apurbaa Mallik , Brojeshwar Bhowmick , Aniruddha Sinha , Aishwarya Visvanathan , Sudeb Das
Abstract: Method and System for estimating three dimensional measurements of a physical object by utilizing readings from inertial sensors is provided. The method involves capturing by a handheld unit, three dimensional aspects of the physical object. The raw recordings are received from the inertial sensors and are used to develop a raw rotation matrix. The raw rotation matrix is subjected to low pass filtering to obtain processed matrix constituted of filtered Euler angles wherein coordinates from the processed rotation matrix is used to estimate gravitational component along the three axis leading to determination of acceleration values and further calculation of measurement of each dimension of the physical object.
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公开(公告)号：US09955880B2
公开(公告)日：2018-05-01
申请号：US14665657
申请日：2015-03-23
Applicant: Tata Consultancy Services Limited
Inventor： Aishwarya Visvanathan , Arpan Pal , Aniruddha Sinha , Rohan Banerjee , Anirban Dutta Choudhury , Aditi Mishra , Avik Ghose
IPC: G06K9/00 , A61B5/024 , A61B5/1455 , A61B5/00
CPC classification number: A61B5/02416 , A61B5/0082 , A61B5/02438 , A61B5/14551 , A61B2560/0238
Abstract: A physiological parameter measurement device comprising a processor and a video processing module coupled to the processor to divide each of a plurality of frames of a video into a plurality of blocks, where the video is of a body part of a subject whose physiological parameter is to be determined. The video processing module further is to select a block having highest peak signal to noise ratio (PSNR) from amongst the plurality of blocks. Further, the video processing module is to extract a photoplethysmogram (PPG) signal from the video based on a block identifier associated with the block. The physiological parameter measurement device further comprises a signal enhancement module coupled to the processor, to process the PPG signal to obtain an enhanced PPG signal for determining a value of the physiological parameter for the subject.
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公开(公告)号：US20150031965A1
公开(公告)日：2015-01-29
申请号：US14444745
申请日：2014-07-28
Applicant: TATA CONSULTANCY SERVICES LIMITED
Inventor： Aishwarya Visvanathan , Arpan Pal , Anirban Dutta Choudhury , Tanushyam Chattopadhyay , Anurag Kumar , Rohan Banerjee , Aniruddha Sinha
IPC: A61B5/00 , A61B5/1455 , A61B5/0402 , A61B5/0205
CPC classification number: A61B5/0059 , A61B5/0205 , A61B5/021 , A61B5/02416 , A61B5/02438 , A61B5/04028 , A61B5/08 , A61B5/14551 , A61B5/6898 , A61B5/7267 , A61B2505/07 , G06F19/00
Abstract: 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.
Abstract translation: 本文描述了使用手持式装置监测与受试者相关的生理参数的方法。 在一个实现中，该方法包括从样本对象的身体部分的视频获得与样本对象相关联的多个样本光体积描记图（PPG）特征。 从多个样本PPG特征中，基于对象的生理参数的基本真值，选择与生理参数相关联的至少一个相关样本PPG特征。 此外，基于至少一个相关样本PPG特征和生理参数的基本真值，确定指示相关样本PPG特征和生理参数之间的相关性的数学模型。 可以部署数学模型，实时监测生理参数。
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