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摘要： 图像分割的经典算法Split-Merge算法思路简洁、运算效率高，但存在边界定位不准确和过分割等问题。针对过分割问题提出了一种改进的Split-Merge算法，在合并过程中引入全局目标函数，并在目标函数中定义了长度项，使用贪心法完成合并过程。长度项以及贪心法的使用促使相邻区域充分合并，有效地克服了过分割等问题，取得了较好的分割效果。
