公开(公告)号：US5727080A

公开(公告)日：1998-03-10

申请号：US434085

申请日：1995-05-03

Applicant: Ingemar J. Cox ,  Sebastien Roy

Inventor： Ingemar J. Cox ,  Sebastien Roy

IPC: H04N1/407 ,  G06T1/00 ,  G06T3/00 ,  G06T5/00 ,  G06T5/40 ,  G06K9/46

CPC classification number: G06T5/40 ,  G06T5/009 ,  G06T5/50 ,  G06T2207/10024 ,  G06T2207/10036

Abstract: Dynamic histogram warping is performed on histograms extracted from an image pair of a scene. The warped histograms are remapped to the image pair and the resulting remapped image pair is subsequently subjected to image processing.

Abstract translation: 对从场景的图像对提取的直方图进行动态直方图变形。 翘曲的直方图被重新映射到图像对，并且随后对所得的重新映射的图像对进行图像处理。

公开(公告)号：US5644651A

公开(公告)日：1997-07-01

申请号：US414397

申请日：1995-03-31

Applicant: Ingemar J. Cox ,  Sebastien Roy

Inventor： Ingemar J. Cox ,  Sebastien Roy

IPC: G01B11/24 ,  G01B11/245 ,  G06T1/00 ,  G06T7/00 ,  G06K9/00 ,  G06F15/00 ,  G06K9/36

CPC classification number: G06T7/0075 ,  G06K9/209 ,  G06K2209/40

Abstract: A technique for compensating for egomotion of the camera used to record a pair of two-dimensional views of a scene when the pair of images is to be used to provide a three dimensional representation of the scene. The technique involves comparing histograms of the intensity levels of pixels of corresponding epipolar lines in the pair of images for assumed amounts of egomotion to identify the amount that results in the smallest total of the sums of squared differences of the histograms.

Abstract translation: 一种用于补偿当该对图像用于提供场景的三维表示时用于记录场景的一对二维视图的照相机的自由运动的技术。 该技术涉及比较用于假设的自由运动量的该对图像中的相应核线的像素的强度级的直方图，以识别导致直方图的平方差之和的最小总和的量。

公开(公告)号：US20110007870A1

公开(公告)日：2011-01-13

申请号：US12680622

申请日：2008-09-30

Applicant: Michel Roux ,  Dan Gudmundson ,  Michel R. Bouchard ,  Vinh Phuc Pham ,  Alexandre Filiatrault ,  Sebastien Roy ,  Steve Godbout

Inventor： Michel Roux ,  Dan Gudmundson ,  Michel R. Bouchard ,  Vinh Phuc Pham ,  Alexandre Filiatrault ,  Sebastien Roy ,  Steve Godbout

IPC: G01N23/04 ,  H05G1/00

CPC classification number: G01N23/04 ,  G01F23/288 ,  G01N2223/637 ,  G01N2223/639 ,  G01V5/0016

Abstract: A method for performing security screening at a checkpoint is provided. The method includes providing an X-ray imaging system having a scanning area and providing a supporting device for supporting articles to be scanned in the scanning area, wherein the supporting device has at least two reference areas manifesting respective X-ray signatures when exposed to X-rays, the X-ray signatures being distinguishable from one another. The method further includes placing an article to be scanned on the supporting device, introducing the article to be scanned in the scanning area while the article is supported by the supporting device and using the X-ray imaging system for deriving the X-ray signatures of the reference areas and for obtaining an X-ray image of the article while the supporting device is in the scanning area. The method further includes using the X-ray signatures to derive X-ray attenuation information from the X-ray image and using the X-ray attenuation information in determining if the article is a security threat.

Abstract translation: 提供了一种在检查点进行安全检查的方法。 该方法包括提供具有扫描区域的X射线成像系统，并提供用于在扫描区域中支撑要扫描的物品的支撑装置，其中，当暴露于X时，所述支撑装置具有表现出相应的X射线签名的至少两个参考区域 X射线签名可以彼此区分开来。 该方法还包括将待扫描的物品放置在支撑装置上，同时在由支撑装置支撑制品的同时将待扫描的物品引入扫描区域，并且使用X射线成像系统获得X射线签名 参考区域和用于在支撑装置处于扫描区域时获得物品的X射线图像。 该方法还包括使用X射线签名从X射线图像导出X射线衰减信息，并且在确定物品是否是安全威胁时使用X射线衰减信息。

公开(公告)号：US20080143455A1

公开(公告)日：2008-06-19

申请号：US11638567

申请日：2006-12-14

Applicant: Art Ross ,  George Feilders ,  Sebastien Roy ,  Jules Gauthier ,  Ramin Deban ,  Cevdet Akyel

Inventor： Art Ross ,  George Feilders ,  Sebastien Roy ,  Jules Gauthier ,  Ramin Deban ,  Cevdet Akyel

IPC: H01P1/12

CPC classification number: H01P5/12

Abstract: There is described a power splitter for directing electromagnetic power comprising: an input port for receiving the electromagnetic power; at least one dielectric element placed inside the power splitter; at least two output ports for outputting the power according to a splitting ratio, the at least two output ports placed on a surface opposite to the input port; and at least one dielectric moving device for positioning the at least one dielectric element between the at least two output ports to dynamically direct the power into the at least two output ports according to the power splitting ratio.

Abstract translation: 描述了一种用于引导电磁功率的功率分配器，包括：用于接收电磁功率的输入端口; 放置在功率分配器内部的至少一个介质元件; 至少两个输出端口，用于根据分流比输出功率，所述至少两个输出端口放置在与输入端口相对的表面上; 以及至少一个介质移动装置，用于将所述至少一个介质元件定位在所述至少两个输出端口之间，以根据所述功率分配比动态地将功率引导到所述至少两个输出端口。

公开(公告)号：US06634552B2

公开(公告)日：2003-10-21

申请号：US09963162

申请日：2001-09-26

Applicant: Warren D. Smith ,  Sebastien Roy

Inventor： Warren D. Smith ,  Sebastien Roy

IPC: G06K710

CPC classification number: G06K7/10722 ,  G06K19/06028

Abstract: The present invention is a system and method for three dimensional machine vision including a projector and camera. The projector casts a structured light Quadratic Residue Bar Code on the surface to be mapped. The camera then images the surface. The projected image is shifted, and the process is repeated a number of times, according to the particular arrangement selected for the structured light Quadratic Residue Bar Code. The image data collected from this series of images is then processed by relatively simple matrix operations to determine the location of each camera pixel in three dimensional space.

Abstract translation: 本发明是一种用于三维机器视觉的系统和方法，包括投影仪和照相机。 投影仪在要映射的表面上投射一个结构化的二次残留条形码。 相机然后对表面进行成像。 根据为结构光二次残留条形码选择的特定布置，投影图像被移位，并重复该过程多次。 然后通过相对简单的矩阵运算来处理从该系列图像收集的图像数据，以确定每个相机像素在三维空间中的位置。

公开(公告)号：US06580821B1

公开(公告)日：2003-06-17

申请号：US09538208

申请日：2000-03-30

Applicant: Sebastien Roy

Inventor： Sebastien Roy

IPC: G06K900

CPC classification number: G06K9/6211 ,  G06K9/00288 ,  G06T7/74

Abstract: A method for computing the location and orientation of an object in three-dimensional space. The method comprises the steps of: (a) marking a plurality of feature points on a three-dimensional model and corresponding feature points on a two-dimensional query image; (b) for all possible subsets of three two-dimensional feature points marked in step (a), computing the four possible three-dimensional rigid motion solutions of a set of three points in three-dimensional space such that after each of the four rigid motions, under a fixed perspective projection, the three three-dimensional points are mapped precisely to the three corresponding two-dimensional points; (c) for each solution found in step (b), computing an error measure derived from the errors in the projections of all three-dimensional marked points in the three-dimensional model which were not among the three points used in the solution, but which did have corresponding marked points in the two-dimensional query image; (d) ranking the solutions from step (c) based on the computed error measure; and (e) selecting the best solution based on the ranking in step (d). Also provided is a program storage device readable by machine, tangibly embodying a program of instructions executable by the machine to perform the method steps of the present invention and a computer program product embodied in a computer-readable medium for carrying out the methods of the present invention.

Abstract translation: 一种用于计算三维空间中对象的位置和方向的方法。 该方法包括以下步骤：（a）在二维查询图像上的三维模型和相应特征点上标记多个特征点; （b）对于在步骤（a）中标记的三个二维特征点的所有可能的子集，计算三维空间中的一组三个点的四个可能的三维刚体运动解，使得在四个刚性 运动，在固定透视投影下，三个三维点精确映射到三个对应的二维点; （c）对于步骤（b）中找到的每个解决方案，计算从在解决方案中使用的三个点中的三维模型中的所有三维标记点的投影中的误差导出的误差测量，但是 在二维查询图像中确实有相应的标记点; （d）基于所计算的误差测量对来自步骤（c）的解决方案进行排序; 和（e）基于步骤（d）中的排名来选择最佳解决方案。 还提供了一种可由机器读取的程序存储设备，其有形地体现了可由机器执行的指令程序以执行本发明的方法步骤以及体现在计算机可读介质中的用于执行本发明的方法的计算机程序产品 发明。

公开(公告)号：US06507661B1

公开(公告)日：2003-01-14

申请号：US09391732

申请日：1999-09-08

Applicant: Sebastien Roy

Inventor： Sebastien Roy

IPC: G06K900

CPC classification number: G06T7/269

Abstract: A method for estimating the optical flow between a plurality of images is provided. The method includes obtaining a motion orientation component and a motion magnitude component. Determining the motion orientation component includes creating, a first graph using spatio-temporal derivatives of the plurality of images, solving for a first maximum-flow in the first graph to thereby obtain a first minimum-cut therefrom, and computing the motion orientation component from the first minimum-cut. Determining the motion magnitude component includes creating a second graph using spatio-temporal derivatives of the plurality of images and the motion orientation component, solving for a second maximum-flow in the second graph to thereby obtain a second minimum-cut therefrom, and computing the motion magnitude component from the second minimum-cut. The motion orientation component and the motion magnitude component together comprise the estimate of the optical flow between the plurality of images. The method properly models errors in the measurement of image derivatives while enforcing a brightness constraint, and efficiently provides a globally optimal solution to the optical flow in the context of the model.

Abstract translation: 提供了一种用于估计多个图像之间的光流的方法。 该方法包括获得运动方向分量和运动幅度分量。 确定运动方向分量包括使用多个图像的时空导数创建第一图，求解第一图中的第一最大流，从而从其获得第一最小切分，并且从 第一个最低限度。 确定运动幅度分量包括使用多个图像和运动取向分量的时空导数创建第二图，求解第二图中的第二最大流，从而从其获得第二最小值，并且计算 运动幅度分量从第二个最小值。 运动方向分量和运动幅度分量一起包括多个图像之间的光流的估计。 该方法在强制执行亮度约束的同时适当地模拟图像衍生物测量中的误差，并在模型的上下文中有效地为光流提供全局最优解。