公开(公告)号：BR0203414A

公开(公告)日：2003-05-27

申请号：BR0203414

申请日：2002-08-28

Applicant: XEROX CORP

Inventor： MESTHA LALIT K ,  DIANAT SOHAIL A

IPC: G01J3/46 ,  G01J3/28 ,  G03G13/01

Abstract: An LED-based spectrophotometer uses a reconstruction algorithm, based on the spectral characteristics of the illumination source and the color sensing system, to convert integrated multiple illuminant measurements from a non-fully illuminant populated color sensor into a fully populated spectral curve using a reference database. The reference database contains training samples that indicate reflectance spectra and their corresponding LED sensor output. A dynamic, Karhunen-Loeve-based (DKL) spectral reconstruction algorithm, used to reconstruct spectra, gives greater importance to the data from the training samples in the neighborhood of the color sample under measurement. This is done using linear operators and basis vectors.

公开(公告)号：BR0201887A

公开(公告)日：2003-04-22

申请号：BR0201887

申请日：2002-05-21

Applicant: XEROX CORP

Inventor： TANDON JAGDISH C ,  MESTHA LALIT K ,  HUBBLE FRED F III

IPC: B41J29/46 ,  G01J3/02 ,  G01J3/51 ,  G01J3/52 ,  G03G15/01 ,  H04N1/60

公开(公告)号：DE102015222498A1

公开(公告)日：2016-05-25

申请号：DE102015222498

申请日：2015-11-13

Applicant: XEROX CORP

Inventor： MESTHA LALIT K ,  SHILLA ERIBAWEIMON ,  BERNAL EDGAR A ,  PENNINGTON GRAHAM STEPHEN ,  MADHU HIMANSHU JAYANTKUMAR

IPC: A61B5/08

Abstract: Es werden ein System und ein Verfahren zum Identifizieren des Atmungsmusters eines Patienten zur kontaktlosen Bewertung der respiratorischen Funktion mit einem tiefenfähigen Bildgebungssystem offenbart. In einer Ausführungsform wird eine zeitveränderliche Tiefenkarten-Sequenz von einer Zielregion erfasst, wobei die Tiefenkarten verarbeitet werden, um ein Atmungssignal für den Probanden zu erhalten. Das Atmungssignal des Probanden umfasst eine zeitliche Sequenz von Momentanvolumina. Ein oder mehrere Segmente des Atmungssignals des Probanden werden dann mit einem oder mehreren Referenz-Atmungssignalen verglichen, die jeweils mit einem bekannten Atmungsmuster verknüpft sind. Als Resultat des Vergleichs wird ein Atmungsmuster für den Probanden identifiziert. Das identifizierte Atmungsmuster wird dann verwendet, um die respiratorische Funktion des Probanden zu bewerten. Die vorliegenden Lehren finden Verwendung in einer Vielzahl verschiedener medizinischen Anwendungen. Es werden verschiedene Ausführungsformen offenbart.

公开(公告)号：BRPI1107116A2

公开(公告)日：2016-03-22

申请号：BRPI1107116

申请日：2011-12-14

Applicant: XEROX CORP

Inventor： MESTHA LALIT K ,  WANG YAO RONG ,  FAN ZHIGANG

IPC: G06K9/00 ,  H04N5/33

Abstract: determinação de um número total de pessoas em uma imagem ir obtida através de um sistema de formação de imagem ir". a presente invenção refere-se a um sistema e método inovado- res para determinar o número de pessoas em uma imagem ir obtida com o uso de um sistema de formação de imagem ir. o presente metodo separa um humano do piano de fundo circundante através de um conjunto de ra- zões de intensidade particularmente formadas. as quantidades derivadas destas razões e valores limítrofes são usadas para classificar seletivamente se um pixei na imagem ir é de um humano ou de um não humano. com base na classificação dos vários pixeis na imagem ir, o número de pessoas é determinado. várias modalidades são reveladas.

公开(公告)号：DE102012201823A1

公开(公告)日：2012-08-09

申请号：DE102012201823

申请日：2012-02-08

Applicant: XEROX CORP

Inventor： MESTHA LALIT K ,  XU BEILEI ,  PAUL PETER

IPC: G06K9/62

Abstract: Es werden ein neues System und ein Verfahren zur gleichzeitigen Spektralzerlegung offenbart, die für die Bildobjekterkennung und Kategorisierung von Szenen und zu analysierenden Objekten geeignet sind. Das vorliegende System nimmt unterschiedliche Spektralebenen gleichzeitig unter Anwendung eines Fabry-Perot-Mehrfachfiltergitters auf, wobei jeder Filter auf eine spezielle Wellenlänge abgestimmt ist. Ein Verfahren zum Klassifizieren von Pixel in dem aufgenommenen Bild wird ebenfalls bereitgestellt. Das vorliegende System und das Verfahren finden Verwendung in einer großen Bandbreite von Anwendungen, beispielsweise die Erkennung von besetzten Plätzen in einem Transportverwaltungssystem und bei der medizinischen Bildverarbeitung und Diagnose für die Gesundheitsverwaltung. Die hierin offenbarte Lehre findet auch Anwendung in Einsatzzwecken, in denen eine zweidimensionale Ansicht einer Szene aufgenommen werden muss und diese in spektrale Bänder zerlegt wird, so dass Objekte in dem Bild in geeigneter Weise erkannt werden können.

公开(公告)号：CA2504545C

公开(公告)日：2009-10-06

申请号：CA2504545

申请日：2005-04-20

Applicant: XEROX CORP

Inventor： BOLTE STEVEN B ,  MESTHA LALIT K ,  TANDON JAGDISH C

IPC: G01J3/46 ,  B41F33/02 ,  B41M1/14 ,  G01J3/10 ,  G01J3/42 ,  G01J3/50 ,  G03G13/01 ,  G03G15/01

Abstract: A full width array spectrophotometer for full width scanning color analysis of color test targets, with one or two substantially linear elongated arrays of closely spaced multiple LED illumination sources of plural different color emissions in a multiply repeated pattern of at least three or four different colors transversely spanning a printer paper path and sequentially illuminated to illuminate a transverse band across a printed sheet moving in the paper path, and a corresponding elongated low cost light imaging bar comprising a parallel and corresponding ly elongated array of multiple closely spaced different color sensitive (three or four rows of color-filtered) photodetectors, which imaging bar is positioned to detect and analyze light reflected from the transverse sequentially illuminated band.

公开(公告)号：DE60232123D1

公开(公告)日：2009-06-10

申请号：DE60232123

申请日：2002-09-17

Applicant: XEROX CORP

Inventor： VIASSOLO DANIEL E ,  MESTHA LALIT K

IPC: G01J3/28 ,  G01J3/46

Abstract: An LED-based spectrophotometer uses a reconstruction algorithm, based on spectral information of an illumination source and a reference spectrophotometer, to convert integrated multiple illuminant measurements from a non-fully illuminant populated color sensor into a fully populated spectral curve using a reference database. A non-linear model, such as a fuzzy inference system (FIS), is used to reconstruct spectra.

公开(公告)号：DE60223117T2

公开(公告)日：2008-02-07

申请号：DE60223117

申请日：2002-08-30

Applicant: XEROX CORP

Inventor： MESTHA LALIT K ,  DIANAT SOHAIL A

IPC: G01J3/46

Abstract: An LED-based spectrophotometer uses a reconstruction algorithm, based on the spectral characteristics of the illumination source and the color sensing system, to convert integrated multiple illuminant measurements from a non-fully illuminant populated color sensor into a fully populated spectral curve using a reference database. The reference database contains training samples that indicate reflectance spectra and their corresponding LED sensor output. A dynamic, Karhunen-Loeve-based (DKL) spectral reconstruction algorithm, used to reconstruct spectra, gives greater importance to the data from the training samples in the neighborhood of the color sample under measurement. This is done using linear operators and basis vectors.

公开(公告)号：DE60223117D1

公开(公告)日：2007-12-06

申请号：DE60223117

申请日：2002-08-30

Applicant: XEROX CORP

Inventor： MESTHA LALIT K ,  DIANAT SOHAIL A

IPC: G01J3/46

Abstract: An LED-based spectrophotometer uses a reconstruction algorithm, based on the spectral characteristics of the illumination source and the color sensing system, to convert integrated multiple illuminant measurements from a non-fully illuminant populated color sensor into a fully populated spectral curve using a reference database. The reference database contains training samples that indicate reflectance spectra and their corresponding LED sensor output. A dynamic, Karhunen-Loeve-based (DKL) spectral reconstruction algorithm, used to reconstruct spectra, gives greater importance to the data from the training samples in the neighborhood of the color sample under measurement. This is done using linear operators and basis vectors.

公开(公告)号：JP2013070997A

公开(公告)日：2013-04-22

申请号：JP2012205230

申请日：2012-09-19

Applicant: Xerox Corp ,  ゼロックス コーポレイションXerox Corporation

Inventor： CARDOSO GEORGE C ,  MESTHA LALIT K ,  XU BEILEI

IPC: A61B5/08

CPC classification number: A61B5/0059 ,  A61B5/0037 ,  A61B5/0816 ,  A61B5/0836 ,  A61B5/7257 ,  A61B2576/00 ,  A61M2205/3313 ,  A61M2230/432 ,  G01N21/3504 ,  G01N33/497

Abstract: PROBLEM TO BE SOLVED: To provide a system and method for image-based determination of carbon dioxide (CO) concentration in exhaled breath.SOLUTION: An image of the exhaled airstream of a subject of interest is received. The image is captured using a mid-wave infrared camera system having an optical filter tuned to the infrared absorption band of CO. The image is preprocessed to isolate a region of pixels containing the exhaled airstream and intensity values of pixels in the identified region are normalized by a value of a known radiance such as that of the subject's nose or face. The image is analyzed to determine COconcentration levels of the exhaled airstream using a calibration curve which relates pixel intensity to COconcentrations. The calibration curve is derived using a physics-based parameterized model. The COconcentration levels are determined and communicated to a computer workstation 1328. Various embodiments are disclosed.

Abstract translation: 要解决的问题：提供用于呼出呼气中二氧化碳（CO 2 ）浓度的基于图像的测定的系统和方法。

解决方案：接收感兴趣主题的呼出气流的图像。 使用具有调谐到CO 2 的红外吸收带的光学滤波器的中波红外相机系统捕获图像。 图像被预处理以隔离包含呼出气流的像素的区域，并且通过诸如被摄体的鼻子或脸部的已知辐射的值对识别的区域中的像素的强度值进行归一化。 使用将像素强度与CO 2 浓度相关联的校准曲线分析图像以确定呼出气流的CO 2 浓度水平 。 使用基于物理的参数化模型导出校准曲线。 CO 2 浓度水平被确定并传送到计算机工作站1328.公开了各种实施例。 版权所有（C）2013，JPO＆INPIT