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基于多尺度局部分形维的黑色素瘤轮廓不规则性描述方法

DOI: 10.11834/jig.20100504

Keywords: 黑色素瘤,轮廓不规则性,多尺度局部分形维

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Abstract:

黑色素瘤轮廓的不规则性是区别于良性皮肤痣的重要临床特征之一,研究皮肤肿瘤轮廓的不规则性描述对黑色素瘤计算机辅助早期诊断和治疗具有重要意义。传统分形维(FD)利用自相似度量表示轮廓的不规则性,但作为全局特征,分类能力较弱。为了探索新的多尺度下轮廓不规则程度的描述方法。提出了高斯滤波和局部分形维相结合的度量模型:两种新的轮廓结构不规则性度量和多尺度下轮廓不规则性特征描述。后者优点在于提供了图像空间不同尺度下轮廓不规则性度量的特征簇。实验分析表明,该轮廓不规则性描述子不仅增强了轮廓复杂性的细节表述,而且不同尺度提取的轮廓不规则度统计特征可有效甄别黑色素瘤和良性皮肤肿瘤。

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