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基于背景重构和阴影消除的运动目标分割

DOI: 10.11834/jig.20091016

Keywords: 灰度归类,背景重构,目标分割,边界交叉点,阴影消除

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Abstract:

背景差分法是一种重要的运动目标分割方法,但是其不仅对背景质量的要求较高,且易将运动阴影误检测为前景目标。针对上述问题,提出了一种用于智能交通系统的新的运动目标分割方法。该方法首先在RGB空间对像素灰度归类法进行了改进,并用其提取了背景图像,同时结合选择更新和背景调整来实时更新背景;然后对背景差分图像的RGB灰度之和,通过设定阈值来提取运动区域;最后对提取的目标阴影混合区在HSV空间,分别进行自上向下、自左向右及其反方向的色调、亮度及边界交叉点判别,以实现阴影检测和消除。实验结果表明,该新方法能获得高质量的重构背景,并能消除阴影(尤其是暗色目标的阴影),因此可提高目标的分割质量。

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