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    • 6. 发明申请
    • AN IMAGING SYSTEM AND METHOD FOR TRACKING THE MOTION OF AN OBJECT
    • 用于跟踪对象运动的成像系统和方法
    • WO2003098922A1
    • 2003-11-27
    • PCT/US2003/015380
    • 2003-05-15
    • THE BOARD OF GOVERNORS FOR HIGHER EDUCATION, STATE OF RHODE ISLAND AND PROVIDENCE PLANTATIONSSUN, YingHAN, XuGUO, Yu
    • SUN, YingHAN, XuGUO, Yu
    • H04N5/225
    • G06K9/209G01S3/7864G06K9/32G06T7/20G06T7/66
    • The present invention is directed to an image tracking system that tracks the motion of an object. The image processing system tracks the motion of an object with an image recording device (118) that records a first image of an object to be tracked and shortly thereafter records a second image of the object to be tracked. The system analyzes data from the first and the second images to provide a difference image of the object, defined by a bit map of pixels. The system processes the difference image to determine a threshold (124) and calculates a centroid (126) of the pixels in the difference image above the threshold. The system then determines the center of the difference image and determines a motion vector (128) defined by the displacement from the center to the centroid and determines a pan tilt vector based on the motion vector and outputs the pan tilt vector (130) to the image recording device to automatically track the object.
    • 本发明涉及一种跟踪物体运动的图像跟踪系统。 图像处理系统利用记录要跟踪的对象的第一图像的图像记录装置(118)跟踪对象的运动,并且此后不久记录要跟踪的对象的第二图像。 该系统分析来自第一和第二图像的数据,以提供由像素的位图定义的对象的差分图像。 系统处理差分图像以确定阈值(124)并且计算阈值以上的差分图像中的像素的质心(126)。 然后,系统确定差分图像的中心,并且确定由中心到质心的位移定义的运动矢量(128),并且基于运动矢量确定摇摄倾斜矢量,并将平移向量矢量(130)输出到 图像记录设备自动跟踪对象。