公开(公告)号：US06870945B2

公开(公告)日：2005-03-22

申请号：US09874160

申请日：2001-06-04

申请人： Todd Schoepflin ,  David R. Haynor ,  John D. Sahr ,  Yongmin Kim

发明人： Todd Schoepflin ,  David R. Haynor ,  John D. Sahr ,  Yongmin Kim

IPC分类号： H04N5/272 ,  G06T5/00 ,  G06T7/20 ,  G06K9/00

CPC分类号： G06T7/254 ,  G06T7/12 ,  G06T7/155 ,  G06T2207/10016

摘要： An object is tracked among a plurality of image frames. In an initial frame an operator selects an object. The object is distinguished from the remaining background portion of the image to yield a background and a foreground. A model of the background is used and updated in subsequent frames. A model of the foreground is used and updated in the subsequent frames. Pixels in subsequent frames are classified as belonging to the background or the foreground. In subsequent frames, decisions are made, including: which pixels do not belong to the background; which pixels in the foreground are to be updated; which pixels in the background were observed incorrectly in the current frame; and which background pixels are being observed for the first time. In addition, mask filtering is performed to correct errors, eliminate small islands and maintain spatial and temporal coherency of a foreground mask.

摘要翻译： 在多个图像帧之间跟踪对象。 在初始帧中，操作者选择一个对象。 该对象与图像的剩余背景部分不同以产生背景和前景。 在随后的帧中使用和更新背景模型。 在后续帧中使用和更新前台的模型。 后续帧中的像素被归类为属于背景或前景。 在随后的帧中，作出决定，包括：哪些像素不属于背景; 要更新前景中的哪些像素; 背景中的像素在当前帧中观察不正确; 并且第一次观察到哪个背景像素。 此外，执行掩模滤波以校正误差，消除小岛并保持前景掩模的空间和时间相干性。