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二维直方图区域斜分的最大熵阈值分割算法*

, PP. 162-168

Keywords: 图像处理,阈值分割,二维直方图区域斜分,最大熵,快速递推算法

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Abstract:

指出现有二维直方图区域直分法中存在明显的错分,提出一种二维直方图区域斜分方法.导出基于二维直方图区域斜分的最大熵阈值选取公式及其快速递推算法,给出图像分割结果和运行时间.并与基于二维直方图直分的最大熵原始算法及其快速算法进行比较.结果表明二维直方图区域斜分可使分割后的图像内部区域均匀,边界形状准确,更有稳健的抗噪性.本文算法的运行时间约为二维直方图斜分最大熵法原始算法的2%,不到二维直方图直分最大熵法的两种快速递推算法的1/3.

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