公开(公告)号：US20090060286A1

公开(公告)日：2009-03-05

申请号：US11849541

申请日：2007-09-04

申请人： Frederick Wilson Wheeler ,  Ambalangoda Gurunnanselage Amitha Perera ,  Gil Abramovich

发明人： Frederick Wilson Wheeler ,  Ambalangoda Gurunnanselage Amitha Perera ,  Gil Abramovich

IPC分类号： G06K9/00

CPC分类号： G06K9/00604

摘要： A biometric identification system and method are provided. The system includes an image capture mechanism for capturing multiple images of a person's iris, a registration component for registering a portion of each image attributable to the iris, and a super-resolution processing component for producing a higher resolution image of the iris. The method includes capturing multiple images of a person's iris, registering a portion of each image attributable to the iris, and applying super-resolution processing to the images to produce a higher-resolution image of the iris.

摘要翻译： 提供了生物识别系统和方法。 该系统包括用于捕获人的虹膜的多个图像的图像捕获机构，用于记录归因于虹膜的每个图像的一部分的登记部件，以及用于产生该虹膜的较高分辨率图像的超分辨率处理部件。 该方法包括捕获人物虹膜的多个图像，记录归因于虹膜的每个图像的一部分，以及对图像应用超分辨率处理以产生虹膜的较高分辨率图像。

公开(公告)号：US20080310759A1

公开(公告)日：2008-12-18

申请号：US12056051

申请日：2008-03-26

申请人： Xiaoming Liu ,  Peter Henry Tu ,  Frederick Wilson Wheeler

发明人： Xiaoming Liu ,  Peter Henry Tu ,  Frederick Wilson Wheeler

IPC分类号： G06K9/32

CPC分类号： G06K9/00241 ,  G06K9/621

摘要： There is provided a discriminative framework for image alignment. Image alignment is generally the process of moving and deforming a template to minimize the distance between the template and an image. There are essentially three elements to image alignment, namely template representation, distance metric, and optimization method. For template representation, given a face dataset with ground truth landmarks, a boosting-based classifier is trained that is able to learn the decision boundary between two classes-the warped images from ground truth landmarks (e.g., positive class) and those from perturbed landmarks (e.g., negative class). A set of trained weak classifiers based on Haar-like rectangular features determines a boosted appearance model. A distance metric is a score from the strong classifier, and image alignment is the process of optimizing (e.g., maximizing) the classification score. On the generic face alignment problem, the proposed framework greatly improves the robustness, accuracy, and efficiency of alignment.

摘要翻译： 提供了一种用于图像对齐的辨别框架。 图像对齐通常是移动和变形模板的过程，以最小化模板和图像之间的距离。 图像对齐基本上有三个要素，即模板表示，距离度量和优化方法。 对于模板表示，给定一个具有地面真实地标的面部数据集，训练有素的分类器能够学习两个类之间的决策边界 - 来自地面真实地标（例如，积极的类）和来自扰动地标的变形图像 （例如负面班）。 基于哈尔式矩形特征的一组经过训练的弱分类器决定了外观模型的提升。 距离度量是来自强分类器的分数，图像对准是优化（例如，最大化）分类分数的过程。 在通用面对齐问题上，提出的框架大大提高了对齐的鲁棒性，准确性和效率。

公开(公告)号：US5790071A

公开(公告)日：1998-08-04

申请号：US887691

申请日：1997-07-03

申请人： Seth David Silverstein ,  Jeffrey Michael Ashe ,  Gregory Michael Kautz ,  Frederick Wilson Wheeler ,  Anthony Wykeham Jacomb-Hood

发明人： Seth David Silverstein ,  Jeffrey Michael Ashe ,  Gregory Michael Kautz ,  Frederick Wilson Wheeler ,  Anthony Wykeham Jacomb-Hood

IPC分类号： H01Q1/18 ,  H01Q1/28 ,  H01Q3/30 ,  H04B7/185 ,  H04B7/204

CPC分类号： H01Q1/185 ,  H01Q1/288 ,  H01Q3/30 ,  H04B7/18506 ,  H04B7/2041

摘要： A Tripulse method determines the orientation or attitude of a phased-array antenna located at a remote site, such as an aircraft or spacecraft. Three pulses are transmitted from the phased-array antenna in an estimated direction toward a coherent receiver, with a sum beam, and with first and second difference beams formed by reversal of the phase of certain elements above a first axis of symmetry, and to one side of a second axis of symmetry. The received signals are processed in a manner which determines the error between the assumed direction and the actual direction of the receiver. To determine the rotational position of the array antenna, the same steps are performed for a second remote receiver, and additional processing determines the complete attitude, including yaw, of the phased-array antenna. The coherent receiver may use the first transmitted pulse as a reference, or it may use a separate reference signal.

摘要翻译： Tripulse方法确定位于远程站点（如飞机或航天器）的相控阵天线的方向或姿态。 在估计的方向上，从相控阵天线向相干接收机发送三个脉冲，并且具有和波束，并且通过将某些元件的相位反转到第一对称轴之上而形成的第一和第二差分波束，以及一个 侧的第二个对称轴。 接收到的信号以确定接收机的假定方向和实际方向之间的误差的方式进行处理。 为了确定阵列天线的旋转位置，对第二远程接收机执行相同的步骤，并且附加处理确定相控阵天线的完整姿态，包括偏航。 相干接收机可以使用第一发送脉冲作为参考，或者可以使用单独的参考信号。