南京大学学报(自然科学版) ›› 2011, Vol. 47 ›› Issue (2): 195200.
高凯亮, 覃团发** , 陈跃波, 常侃
Gao K ai Liang, Qin T uan Fa, Chen Yue?Bo, Chang Kan
摘要: 运动目标检测在智能视频监控、 人机交互、 目标导航等诸多领域有着广泛应用. 背景减法是运动目标检测中应用较广泛的一种方法. 在该方法中, 背景建模和阈值化分割是最重要的步骤, 直接决定
了检测效果的好坏. 当目标本身变化比较大时, 若利用传统的基于全局阈值的分割法, 分割效果并不理想. 针对基于全局阈值分割差分图像存在的问题, 本文提出了一种基于混合高斯背景模型的像素分类运
动目标检测方法. 该方法首先利用混合高斯模型对背景建模, 克服了场景变化等因素带来的影响; 其次, 利用背景减法得到差分图像并对像素进行分类, 最后对分类后的像素集分别进行阈值化分割, 得到前景
目标. 实验结果表明, 与传统的基于全局阈值的分割法相比, 本文算法能够获得更好的检测效果和鲁棒性.
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