fractal LS分形LSfractaln 不规则碎片形fractal interpolation surface分形插值曲面fractal diagnosis and classify分形诊断分类fractal interpolation function分形插值函数fractal content-grads method分形含量梯度法Fractal compression technology分形压缩技术Fractal Dimension of Waveforms波形分形维数fractal interpolation algorithm分形插值算法fractal dimension of grain size粒度分维fractal interpolation functions分形插值函数fractal dimension of boundaries边界维数