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基于交叉皮质模型的单幅图像阴影检测算法

DOI: 10.3724/SP.J.1004.2014.02887, PP. 2887-2898

Keywords: 阴影检测,交叉皮质模型,局部二值模式,直方图划分

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Abstract:

?图像中含有阴影区域对后续处理任务影响较大,根据阴影特性,提出基于交叉皮质模型(Intersectingcorticalmodel,ICM)的单幅图像阴影检测算法.通过在点火连接矩阵构造上考虑邻域像素值依赖关系,融入局部二值模式(Localbinarypattern,LBP)表征的纹理信息形成了Te-ICM模型.根据阴影检测流程,利用模型迭代特性,通过设计停止条件自动检测本影,在本影修复后生成附着半影.同时优化模型参数,设计了基于分层聚类直方图划分的阈值下降策略.仿真结果表明:对于典型影像集,Te-ICM模型及相应参数设计可以较好地实现阴影检测,输出阴影掩模准确度高,为后续阴影去除提供了基础.

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