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    • 5. 发明授权
    • Method and apparatus for correcting a head pose in a video phone image
    • 用于校正视频电话图像中的头姿势的方法和装置
    • US07778444B2
    • 2010-08-17
    • US10538204
    • 2003-12-08
    • Mi-Suen LeeYun-Ting LinMiroslav TrajkovicVasanth Philomin
    • Mi-Suen LeeYun-Ting LinMiroslav TrajkovicVasanth Philomin
    • G06K9/00G06K9/36
    • G06K9/00228G06T7/579G06T7/75G06T17/00G06T2200/08H04N7/147
    • An image processing system (250) and method (300) are disclosed for correcting a head pose in a video phone image, so that a frontal view is presented on a display. A disclosed head pose corrector (250) estimates the orientation of a head pose and adjusts the orientation of the head pose, if necessary, to present a frontal view. The orientation of the head pose is adjusted by generating a three dimensional model of the face surface and adjusting the orientation of the three dimensional face model to provide the desired frontal view. The head pose corrector (250) may be included in a video phone (100) to correct the head pose of transmitted or received images (or both) or may be included in a server on a network to automatically adjust the head shots of one or more participants to a video phone communication.
    • 公开了一种图像处理系统(250)和方法(300),用于校正视频电话图像中的头部姿势,从而在显示器上呈现正视图。 公开的头部姿态校正器(250)估计头部姿势的方位并且如果需要的话调整头部姿势的方向以呈现正视图。 通过产生面部表面的三维模型并调整三维面部模型的取向来提供头部姿势的方位以提供所需的正视图。 头部姿势校正器(250)可以被包括在视频电话(100)中以校正发送或接收的图像(或两者)的头部姿态,或者可以被包括在网络上的服务器中,以自动调整一个或 更多参与者进行视频电话沟通。
    • 9. 发明授权
    • Self adjusting stereo camera system
    • 自调立体摄像系统
    • US08085293B2
    • 2011-12-27
    • US09808377
    • 2001-03-14
    • Tomas BrodskyMi-Suen LeeEric Cohen-Solal
    • Tomas BrodskyMi-Suen LeeEric Cohen-Solal
    • H04N13/02
    • H04N13/239H04N13/218H04N13/296
    • A stereo camera system including: a stereo imaging system such as two or more cameras or a camera and a set of angled mirrors, for outputting at least one stereo image; a recognition system for locating an object of interest in the field of view of the stereo imaging system and at least one of a distance of the object of interest from the stereo imaging system and the size of the object of interest; and an adjustor for automatically changing at least one system parameter which affects the spatial resolution of the object of interest based on at least one of the located distance of the object of interest from the stereo imaging system and the size of the object of interest.
    • 一种立体相机系统,包括:立体成像系统,例如两个或多个照相机或相机和一组倾斜镜,用于输出至少一个立体图像; 识别系统,用于在立体成像系统的视野中定位感兴趣的对象,并且感兴趣对象距立体成像系统的距离和感兴趣对象的大小中的至少一个; 以及调整器,用于基于所述立体成像系统的所述感兴趣对象的所述定位距离和所述感兴趣对象的大小中的至少一个自动地改变影响所述感兴趣对象的空间分辨率的至少一个系统参数。
    • 10. 发明授权
    • Size calibration and mapping in overhead camera view
    • 高空摄像机视图中的尺寸校准和映射
    • US07876361B2
    • 2011-01-25
    • US11329461
    • 2006-01-11
    • Yun-Ting LinTomas BrodskyMi-Suen Lee
    • Yun-Ting LinTomas BrodskyMi-Suen Lee
    • H04N5/228
    • G06K9/00362G06T7/80
    • To calibrate images from an overhead camera, two equal-length reference lines at different heights relative to the floor plane are imaged. By comparing the resultant image-width of each of these lines in the view provided by the camera, the effective focal point of the camera is determined. In a preferred embodiment, a doorframe is used to provide equal-length lines at different heights parallel to the floor. The threshold of the doorway at the floor plane is used as a reference plane, and a parallel calibration line at a known/measured height in the doorway is defined. The image produced by a vertically oriented camera of these two equal length lines will show a longer line at the elevated position, the different widths of the images of these lines being dependent upon the camera's effective focal point. From these two projections of the equal-length lines at different heights, the camera's focal point distance from the reference floor plane is determined.
    • 为了校准来自高架摄像头的图像,对相对于平面平面的不同高度的两条等长参考线进行成像。 通过比较由相机提供的视图中的每一行的合成图像宽度,确定相机的有效焦点。 在优选实施例中,门框用于提供与地板平行的不同高度的等长线。 将地板平面上门口的阈值用作参考平面,并且定义门口处已知/测量高度的平行校准线。 由这两条相同长度线的垂直取向的相机产生的图像将在升高的位置显示较长的线,这些线的图像的不同宽度取决于相机的有效焦点。 从不同高度的等长线的这两个投影,确定相机与基准平面的焦点距离。