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    • 52. 发明授权
    • System and method for reconstructing restored facial images from video
    • 用于从视频重建恢复的面部图像的系统和方法
    • US08064712B2
    • 2011-11-22
    • US11836316
    • 2007-08-09
    • Frederick Wilson WheelerXiaoming LiuPeter Henry Tu
    • Frederick Wilson WheelerXiaoming LiuPeter Henry Tu
    • G06K9/40
    • G06K9/621G06K9/00281G06T7/33
    • A system and method for performing a facial image restoration is described. The system includes an active appearance model component for fitting an active appearance model to a facial image found in each of a plurality of video frames, a registration component for registering each pixel of each facial image with comparable pixels of each of the other facial images, and a restoration component for producing a restored facial image from the facial images. The method includes fitting an active appearance model to a facial image found in each of a plurality of video frames, registering each pixel of each said facial image with comparable pixels of each of the other facial images, and producing a restored facial image from the facial images.
    • 描述用于执行面部图像恢复的系统和方法。 该系统包括用于将活动外观模型拟合到在多个视频帧中的每一个中发现的面部图像的活动外观模型部件,用于将每个面部图像的每个像素与每个其他面部图像的可比较像素对准的注册部件, 以及恢复部件,用于从面部图像产生恢复的面部图像。 该方法包括将活动外观模型拟合到在多个视频帧中的每一个中发现的面部图像,将每个所述面部图像的每个像素与每个其他面部图像的可比较像素对准,并从面部产生恢复的面部图像 图片。
    • 56. 发明申请
    • GENERIC FACE ALIGNMENT VIA BOOSTING
    • 一般面对面通过升压
    • US20080310759A1
    • 2008-12-18
    • US12056051
    • 2008-03-26
    • Xiaoming LiuPeter Henry TuFrederick Wilson Wheeler
    • Xiaoming LiuPeter Henry TuFrederick Wilson Wheeler
    • G06K9/32
    • G06K9/00241G06K9/621
    • 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.
    • 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。
    • 58. 发明授权
    • Space carving for measurement of high-curvature areas on a mechanical part
    • 空间雕刻用于测量机械部件上的高曲率区域
    • US06969836B2
    • 2005-11-29
    • US10065510
    • 2002-10-25
    • Geoffrey Mark CrossPeter Henry Tu
    • Geoffrey Mark CrossPeter Henry Tu
    • G01B11/24G06T1/00H01L27/00
    • G01B5/205G01B11/2433
    • A method of determining the leading edge (E) of a turbine blade or airfoil (P). The object is mounted in a desired position and backlit using a light source (S). The object and its leading edge are viewed using one or more cameras (I) which are positioned on the opposite side of the part. When illuminated, the object blocks a portion of the light from the source and the occluded portion of the light defines an outline (T) of the object including its leading edge. An image of the object is obtained and the part is then moved to other positions at which additional images are obtained. The images are processed using a space carving algorithm to ascertain the contour of the leading edge of the object. This allows accurate measurements of the leading edge to be made for using in determining acceptability of the part.
    • 一种确定涡轮叶片或翼型件(P)的前缘(E)的方法。 使用光源(S)将物体安装在期望位置并背光。 使用位于该部件的相对侧上的一个或多个照相机(I)来观察物体及其前缘。 当照明时,物体阻挡来自源的光的一部分,并且光的遮挡部分限定包括其前缘的物体的轮廓(T)。 获得对象的图像,然后将该部分移动到获得附加图像的其他位置。 使用空间雕刻算法处理图像以确定对象的前缘的轮廓。 这允许准确测量前导边缘以用于确定部件的可接受性。
    • 59. 发明授权
    • Method and system for calibrating multiple cameras with potentially non-overlapping fields of view
    • 用于校准具有潜在非重叠视场的多个摄像机的方法和系统
    • US06853936B1
    • 2005-02-08
    • US10674487
    • 2003-09-30
    • Timothy Patrick KelliherPeter Henry TuJens Rittscher
    • Timothy Patrick KelliherPeter Henry TuJens Rittscher
    • G06K9/00G06K9/32G06T7/00
    • G06T7/80
    • A camera calibration system providing a first transmitter capable of transmitting a first signal; a second transmitter capable of transmitting a second signal; a second receiver and a third transmitter capable of transmitting a first plurality of signals. The second receiver and the third transmitter being movable together as a common unit so that the second receiver receives the first signal and the second signal and so that the first plurality of signals are receivable by a first camera to be calibrated. The system provides for a processor in electrical communication with the second receiver and the first camera, the is processor capable of receiving a second plurality of signals from the first camera to be calibrated, the second plurality of signals indicative of receipt of said first plurality of signals. Further, the processor is capable of generating a third signal indicative of calibration of the first camera and being configured to determine a relative coordinate system of the common unit, the first transmitter and the second transmitter, and the first camera based at least in part on the first signal, the second signal, and the second plurality of signals.
    • 一种相机校准系统,提供能够发送第一信号的第一发射机; 能够发送第二信号的第二发射机; 第二接收机和能够发送第一多个信号的第三发射机。 第二接收机和第三发射机可以作为公共单元一起移动,使得第二接收机接收第一信号和第二信号,并且使得第一多个信号可被待校准的第一相机接收。 该系统提供与第二接收机和第一相机电通信的处理器,处理器能够接收来自要校准的第一相机的第二多个信号,第二多个信号指示接收到所述第一多个 信号。 此外,处理器能够产生指示第一相机的校准的第三信号,并且被配置为至少部分地基于公共单元,第一发送器和第二发送器以及第一相机来确定相对坐标系 第一信号,第二信号和第二多个信号。