Compared to previous methods, the novelties of the proposed method are two-fold. Firstly, the proposed method improves computing efficiency and reconstruction precision by weighted iterative implementing using the coded points being easy to match precisely. 与已有方法比较,该方法有两个主要特点:①利用编码点进行加权迭代,由于编码点易于点对精确匹配,提高了算法的运算效率和重建精度;