Second is refinementstep, in which spatial objects resulted from filter step are subjected to exacted computation.
第二步为细化步骤，对从第一步中筛选出的空间对象进行精确的空间运算操作。
2
After iterative refinement of each processing step, the optimal word-length and Q-Value of each intermediate results and coefficients are evolved.
通过对各个处理步骤迭代求精，从而引出各数据处理步骤中间运算结果及滤波系数的最佳字长及Q值。
3
The segmentation, a two-steprefinement algorithm interference fringes from the skeleton, and tracking algorithm using stripes on the fringes and carry out rectification.