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基于可变步长的光谱响应曲线分形维

DOI: 10.6046/gtzyyg.2011.01.07, PP. 37-41

Keywords: 分形维,高光谱图像,改进分形维计算,多线程

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Abstract:

提出了一种基于可变步长(即基于不同采样率)的高光谱图像响应曲线分形维计算方法。该方法在不同的采样率下对光谱响应曲线进行采样,计算相邻点的光谱响应差值,统计采样点的差值总和,利用最小二乘法求出分形维。为了提高计算效率,运用多线程的技术将高光谱图像分成几个部分,各部分的分形维由多核计算机同时并行计算。实验结果表明,该方法能较好地改善量规法与网格法计算效率低、精度不高等问题,取得了良好的效果。

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