公开(公告)号：US20050018189A1

公开(公告)日：2005-01-27

申请号：US10504796

申请日：2003-02-13

Applicant: D. Hampton ,  Shankar Krishnan ,  James Rix

Inventor： D. Hampton ,  Shankar Krishnan ,  James Rix

IPC: G01J3/447 ,  G01J4/04 ,  G01J4/00

CPC classification number: G01J4/04 ,  G01J3/447

Abstract: In a device for measuring the complete polarization state of light over a spectral bandwidth, an optical input signal (41) with wavelengths of light within a spectral band is incident on two or more diffraction gratings (42, 44, 46, 48), or incident from at least two directions on one or more diffraction gratings (72, 74), and the intensity is measured as a function of wavelength for at least four of the diffraction spectra produced by the grating(s). The polarization state of light is then calculated as a function of wavelength over the spectral bandwidth from the intensity measurements.

Abstract translation: 在用于在光谱带宽上测量光的完全偏振状态的装置中，光谱波段内的波长的光输入信号（41）入射到两个或更多个衍射光栅（42,44,46,48）上，或 在一个或多个衍射光栅（72,74）上从至少两个方向入射，并且对于由光栅产生的至少四个衍射光谱，测量强度作为波长的函数。 然后，根据强度测量，光的偏振状态被计算为光谱带宽上的波长的函数。

公开(公告)号：US07221454B2

公开(公告)日：2007-05-22

申请号：US10504796

申请日：2003-02-13

Applicant: D. Scott Hampton ,  Shankar Krishnan ,  James Rix

Inventor： D. Scott Hampton ,  Shankar Krishnan ,  James Rix

IPC: G01J4/00

CPC classification number: G01J4/04 ,  G01J3/447

Abstract: In a device for measuring the complete polarization state of light over a spectral bandwidth, an optical input signal (41) with wavelengths of light within a spectral band is incident on two or more diffraction gratings (42, 44, 46, 48), or incident from at least two directions on one or more diffraction gratings (72, 74), and the intensity is measured as a function of wavelength for at least four of the diffraction spectra produced by the grating(s). The polarization state of light is then calculated as a function of wavelength over the spectral bandwidth from the intensity measurements.

Abstract translation: 在用于在光谱带宽上测量光的完全偏振状态的装置中，光谱波段内的波长的光输入信号（41）入射到两个或更多个衍射光栅（42,44,46,48）上，或 在一个或多个衍射光栅（72,74）上从至少两个方向入射，并且对于由光栅产生的至少四个衍射光谱，测量强度作为波长的函数。 然后，根据强度测量，光的偏振状态被计算为光谱带宽上的波长的函数。

公开(公告)号：US08982179B2

公开(公告)日：2015-03-17

申请号：US13527774

申请日：2012-06-20

Applicant: Stephen C. North ,  John F. Murray ,  Christopher W. Rice ,  Shankar Krishnan

Inventor： Stephen C. North ,  John F. Murray ,  Christopher W. Rice ,  Shankar Krishnan

IPC: H04N7/14

CPC classification number: H04N7/141 ,  H04N7/157 ,  H04N21/44008 ,  H04N21/8146

Abstract: A method that incorporates teachings of the subject disclosure may include, for example, utilizing a system including at least one processor for determining a video modification plan for a received video stream of a video call session according to the at least one party associated with the video call session, modifying, by the system, a plurality of background images of the received video stream according to the video modification plan to generate a plurality of modified background images, and generating, by the system, a modified video stream according to the plurality of modified background images. Other embodiments are disclosed.

Abstract translation: 结合本公开的教导的方法可以包括例如利用包括至少一个处理器的系统，用于根据与视频相关联的至少一个方确定视频呼叫会话的接收视频流的视频修改计划 呼叫会话，由系统修改根据该视频修改方案的接收到的视频流的多个背景图像，以生成多个修改后的背景图像，并且由该系统根据多个修改图像生成修改的视频流 修改背景图片。 公开了其他实施例。

公开(公告)号：US08949842B2

公开(公告)日：2015-02-03

申请号：US12347810

申请日：2008-12-31

Applicant: Shankar Krishnan ,  Aaron Archer

Inventor： Shankar Krishnan ,  Aaron Archer

IPC: G06F9/50 ,  H04L12/24

CPC classification number: G06F9/5072 ,  G06F9/5027 ,  H04L41/145

Abstract: A method and apparatus for providing a facility location plan for a network with a V-shaped facility cost are disclosed. For example, the method receives an event from a queue, wherein the event comprises an open event or a tight event. The method connects a plurality of adjacent clients to a facility, if the event comprises the open event, and adds a new client-facility edge to a graph comprising a plurality of client-facility edges, if the event comprises the tight event.

Abstract translation: 公开了一种用于提供具有V形设备成本的网络的设施位置计划的方法和装置。 例如，该方法从队列接收事件，其中事件包括打开事件或紧急事件。 如果事件包括打开事件，则该方法将多个相邻客户端连接到设施，并且如果事件包括紧密事件，则将新的客户机设施边缘添加到包括多个客户机设施边缘的图形中。

公开(公告)号：US08737735B2

公开(公告)日：2014-05-27

申请号：US13524140

申请日：2012-06-15

Applicant: Chao Tian ,  Shankar Krishnan

Inventor： Chao Tian ,  Shankar Krishnan

IPC: G06K9/00

CPC classification number: G06T5/20 ,  G06T5/002 ,  G06T2207/20028 ,  G06T2207/20192

Abstract: A method includes generating a first principle bilateral filtered image component from a source image. The first principle bilateral filtered image component corresponds to a second pixel value of a set, the second pixel value greater than or equal to a first pixel value. The method includes selectively updating a result pixel of a result image based on the first principle bilateral filtered image component and deallocating the first principle bilateral filtered image component. After deallocating the first principle bilateral filtered image component, a second principle bilateral filtered image component is generated from the source image. The second principle bilateral filtered image component corresponds to a third pixel value. The third pixel value is greater than the second pixel value. The third pixel value is less than or equal to a fourth pixel value. The result pixel is selectively updated based on the second principle bilateral filtered image component.

Abstract translation: 一种方法包括从源图像生成第一原理双边滤波图像分量。 第一原理双边滤波图像分量对应于一组的第二像素值，第二像素值大于或等于第一像素值。 该方法包括基于第一原理双边滤波图像分量选择性地更新结果图像的结果像素并且取消分配第一原理双边滤波图像分量。 在解除分配第一原理双边滤波图像分量之后，从源图像生成第二原理双边滤波图像分量。 第二原理双边滤波图像分量对应于第三像素值。 第三像素值大于第二像素值。 第三像素值小于或等于第四像素值。 基于第二原理双边滤波图像分量选择性地更新结果像素。

公开(公告)号：US20130336585A1

公开(公告)日：2013-12-19

申请号：US13524140

申请日：2012-06-15

Applicant: Chao Tian ,  Shankar Krishnan

Inventor： Chao Tian ,  Shankar Krishnan

IPC: G06K9/40

CPC classification number: G06T5/20 ,  G06T5/002 ,  G06T2207/20028 ,  G06T2207/20192

Abstract: A method includes generating a first principle bilateral filtered image component from a source image. The first principle bilateral filtered image component corresponds to a second pixel value of a set, the second pixel value greater than or equal to a first pixel value. The method includes selectively updating a result pixel of a result image based on the first principle bilateral filtered image component and deallocating the first principle bilateral filtered image component. After deallocating the first principle bilateral filtered image component, a second principle bilateral filtered image component is generated from the source image. The second principle bilateral filtered image component corresponds to a third pixel value. The third pixel value is greater than the second pixel value. The third pixel value is less than or equal to a fourth pixel value. The result pixel is selectively updated based on the second principle bilateral filtered image component.

Abstract translation: 一种方法包括从源图像生成第一原理双边滤波图像分量。 第一原理双边滤波图像分量对应于一组的第二像素值，第二像素值大于或等于第一像素值。 该方法包括基于第一原理双边滤波图像分量选择性地更新结果图像的结果像素并且取消分配第一原理双边滤波图像分量。 在解除分配第一原理双边滤波图像分量之后，从源图像生成第二原理双边滤波图像分量。 第二原理双边滤波图像分量对应于第三像素值。 第三像素值大于第二像素值。 第三像素值小于或等于第四像素值。 基于第二原理双边滤波图像分量选择性地更新结果像素。

公开(公告)号：US08538138B2

公开(公告)日：2013-09-17

申请号：US12893404

申请日：2010-09-29

Applicant: Shankar Krishnan ,  Pei Yean Lee ,  John Barrett Moore ,  Suresh Venkatasubramanian

Inventor： Shankar Krishnan ,  Pei Yean Lee ,  John Barrett Moore ,  Suresh Venkatasubramanian

IPC: G06K9/00 ,  G06T15/00

CPC classification number: G06K9/00214 ,  G06K9/6211 ,  G06T7/30 ,  G06T17/00 ,  G06T2207/10028

Abstract: A method for registering multiple 3D point sets by determining optimal relative positions and orientations of the 3D point sets. Initial values are determined for the rotation matrices corresponding to the relative orientations of reference frames of the 3D point sets. A registration error cost function is optimized on a product manifold of all of the rotation matrices to determine optimal values of the rotation matrices. The optimal values of the rotation matrices are used to determine optimal values for translation vectors corresponding to the relative positions of the reference frames of the 3D point sets. The 3D point sets are registered on a common reference frame using the optimal rotation matrices and the optimal translation vectors.

Abstract translation: 一种用于通过确定3D点集合的最佳相对位置和取向来登记多个3D点集的方法。 对于与3D点集的参考帧的相对取向相对应的旋转矩阵确定初始值。 在所有旋转矩阵的乘积歧管上优化注册误差成本函数，以确定旋转矩阵的最佳值。 旋转矩阵的最佳值用于确定对应于3D点集的参考帧的相对位置的平移向量的最优值。 使用最佳旋转矩阵和最优平移向量将3D点集登记在公共参考帧上。

公开(公告)号：US20130121568A1

公开(公告)日：2013-05-16

申请号：US13296417

申请日：2011-11-15

Applicant: Shankar Krishnan ,  James Klosowski

Inventor： Shankar Krishnan ,  James Klosowski

IPC: G06K9/32

CPC classification number: G06T3/4053

Abstract: A method includes receiving an image having a first resolution and generating an upsampled image having a second resolution based on the image. A multi-dimensional data structure corresponding to a multi-dimensional image space is generated from the upsampled image. Each node of the data structure is determined based on a weighted sum of values of one or more pixels in the upsampled image. Each of the one or more pixels corresponds to a pixel in the received image and is located within a region of the image space having a vertex defined by the node. A filter modifies the values of the nodes and a second upsampled image is generated based on the modified values of the nodes. Each pixel of the second upsampled image not corresponding to a pixel in the received image is determined based on a weighted sum of the modified values of one or more nodes.

Abstract translation: 一种方法包括接收具有第一分辨率的图像并基于该图像生成具有第二分辨率的上采样图像。 从上采样图像生成对应于多维图像空间的多维数据结构。 基于上采样图像中的一个或多个像素的值的加权和来确定数据结构的每个节点。 一个或多个像素中的每一个对应于接收到的图像中的像素，并且位于具有由该节点定义的顶点的图像空间的区域内。 滤波器修改节点的值，并且基于节点的修改值生成第二上采样图像。 基于一个或多个节点的修改值的加权和来确定不对应于接收图像中的像素的第二上采样图像的每个像素。

公开(公告)号：US20120320377A1

公开(公告)日：2012-12-20

申请号：US13164130

申请日：2011-06-20

Applicant: Johannes D. de Veer ,  Leonid Poslavsky ,  G. Vera Zhuang ,  Shankar Krishnan

Inventor： Johannes D. de Veer ,  Leonid Poslavsky ,  G. Vera Zhuang ,  Shankar Krishnan

IPC: G01J4/00

CPC classification number: G01N21/21 ,  G01J3/504 ,  G01N21/274

Abstract: A method to calibrate a polarizer in polarized optical system at any angle of incidence, by decoupling the calibration from a polarization effect of the system, by providing a calibration apparatus that includes a substrate having a polarizer disposed on a surface thereof, with an indicator on the substrate for indicating a polarization orientation of the polarizer, loading the calibration apparatus in the polarized optical system with the indicator in a desired position, determining an initial angle between the polarization orientation and a reference of the polarized optical system, acquiring spectra using the polarized optical system at a plurality of known angles between the polarization orientation and the reference of the polarized optical system, using the spectra to plot a curve indicating an angle of the polarizer in the polarized optical system, and when the angle of the polarizer is outside of a desired range, adjusting the angle of the polarizer, and repeating the steps of acquiring the spectra, and plotting a curve indicating the angle of the polarizer.

Abstract translation: 一种通过提供校准装置来校准偏振光学系统中任何入射角的偏振器的方法，通过提供校准装置，该校准装置包括具有设置在其表面上的偏振器的衬底， 用于指示偏振器的偏振取向的衬底，将校准装置装载在具有指示器的期望位置的偏振光学系统中，确定极化取向和偏振光学系统的基准之间的初始角度，使用偏振光 光学系统以偏振方向和偏振光学系统的基准之间的多个已知角度，使用光谱绘制指示偏振器在偏振光学系统中的角度的曲线，以及当偏振器的角度在 期望的范围，调节偏振器的角度，并重复以下步骤 获取光谱，并绘制一个指示偏振片角度的曲线。

公开(公告)号：US07755764B2

公开(公告)日：2010-07-13

申请号：US12019592

申请日：2008-01-24

Applicant: Hidong Kwak ,  Shankar Krishnan

Inventor： Hidong Kwak ,  Shankar Krishnan

IPC: G01N21/55

CPC classification number: G01B11/0625 ,  G01B11/0633 ,  G01B11/0641 ,  G01J3/02 ,  G01J3/0224 ,  G01J3/0294 ,  G01J3/447 ,  G01N21/211 ,  G01N21/33 ,  G01N2021/213 ,  G01N2201/0233

Abstract: An optical method and system for measuring characteristics of a sample using a broadband metrology tool in a purge gas flow environment are disclosed. In the method a beam path for the metrology tool is purged with purge gas at a first flow rate. A surface of the sample is illuminated by a beam of source radiation having at least one wavelength component in a vacuum ultraviolet (VUV) range and/or at least one wavelength component in an ultraviolet-visible (UV-Vis) range. A flow rate of a purge gas is adjusted between the first flow rate for metrology measurements made when the source radiation is in the VUV spectral region and a second flow rate for metrology measurements made when the source radiation is in the UV-Vis spectral region. The system includes a light source, illumination optics, collection optics, detector, a purge gas source and a controller. The purge gas source is configured to supply a flow of purge gas to a beam path in the light source and/or illumination optics and/or sample and/or collection optics and/or detector. The controller is configured to control a flow rate of the purged gas flow in response to an output signal from the detector.

Abstract translation: 公开了一种用于在吹扫气体流动环境中使用宽带测量工具测量样品的特性的光学方法和系统。 在该方法中，用第一流量的吹扫气体吹扫计量工具的光束路径。 通过在紫外 - 可见（UV-Vis）范围内具有真空紫外（VUV）范围和/或至少一个波长分量的至少一个波长分量的源辐射束照射样品的表面。 当源辐射处于VUV光谱区域时进行的度量测量的第一流量和当源辐射处于UV-Vis光谱区域时进行度量测量的第二流量时，净化气体的流量被调节。 该系统包括光源，照明光学器件，收集光学器件，检测器，吹扫气体源和控制器。 吹扫气体源被配置为向光源和/或照明光学器件和/或样品和/或收集光学元件和/或检测器中的光束路径提供净化气体流。 控制器被配置为响应于来自检测器的输出信号来控制净化气体流量的流量。