用于利用积分梯度投影的面部跟踪的方法和装置

Method and apparatus for face tracking utilizing integral gradient projections

Abstract

A method, an apparatus and a computer program product are provided for estimating and verifying translation motion and/or a scaling factor between face regions in respective frames during face tracking. A method determines translation motion between face regions in two successive frames based upon integral gradient projections of a face region in a first frame and a corresponding window in a second frame. The method also verifies the translation motion between the first and second frames utilizing integral gradient projections. A method also determines a transfer function relating integral projection curves of a face region in a first frame that has a predefined position and a predetermined size and a co-located window of same size in a second frame, determines a scaling factor based upon the transfer function and then verifies the scaling factor utilizing integral gradient projections.
提供了一种方法、装置和计算机程序产品以用于估计和验证在面部跟踪期间在相应帧中面部区域之间的平移运动和/或缩放因子。方法基于第一帧中面部区域和第二帧中对应窗口的积分梯度投影确定两个连续帧中面部区域之间的平移运动。方法也利用积分梯度投影验证第一帧和第二帧之间的平移运动。方法也确定与具有预定位置和预定尺寸的第一帧中面部区域以及第二帧中相同尺寸共置窗口的积分投影曲线相关的转移函数,基于转移函数确定缩放因子以及继而利用积分梯度投影验证缩放因子。

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    WO-2016169342-A1October 27, 2016中兴通讯股份有限公司Procédé et dispositif de suivi de cible