摘要: 当前局部特征模糊分割算法没有对单幅散焦图像进行预处理,导致单幅散焦图像的清晰度较低,从而影响分割效果。原有的模糊分割算法在像素分割的过程中,像素标签量巨大,从而导致分割过程复杂。为此,提出利用免疫谱聚类算法实现对单幅散焦图像的局部特征模糊分割。首先,通过分块的方法对局部模糊图像进行再次模糊;然后,比较模糊前后散焦图像的奇异值变化,并以该变化为依据对散焦图像进行标识 ;最后,提取出单幅散焦图像的奇异值特征,进而实现单幅散焦图像的局部特征模糊分割的目标。利用谱聚类的方法对散焦图像中的像素点样本进行聚类,采用Nystrm逼近方法对像素点相似性矩阵的特征向量进行计算,降低了计算的复杂度;同时利用免疫算法提高聚类结果的准确性,保证了散焦图像的局部特征模糊分割结果。实验结果表明,所提算法能够有效地对单幅散焦图像进行分割,分割的效果较好,计算过程较为简单。
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