There are only 4 terms in the corresponding refinement equationsof the orthogonal scaling functions and the wavelets (and so do the decomposition and reconstruction algorithms).
构造的正交尺度函数和小波的两尺度方程中只包含4项，因而相应的分解和重构算法也只有4项。
2
Based on analysis ofscalingequations, we found that the measuring range can be changed easily by modifying only two parameters-the scale factor and the lower limit of the range.