复合型两点多段非均匀性校正算法研究

两点法和两点多段法都是基于定标数据的线性校正方法，前者计算量小但校正精度差；后者虽然可以达到理想的校正精度，却是以计算量的剧增为代价的。针对两点多段法校正精度受分段数控制这一缺陷，改进了传统的两点多段校正算法。使用自动分段在获得满意的校正精度的同时减少计算量和存储空间。进而结合两点法的思路提出复合型两点多段校正算法，分别使用两点法和改进的两点多段法对不同的光敏元进行处理，进一步在保证校正精度的同时提高计算速度。

The Mixed Algorithm of Two-Point Multi-Section Nonuniformity Correction

Traditional two - point algorithm and two - point multi - section algorithm are the linearity corrected calibration - based techniques. Two - point algorithm needs less operation time but has lower precision. Traditional two - point multi - section algorithm needs much more operation time for getting higher precision. Aimed at the limitation of two - point multi - section algorithm whose precision is dominated by the number of section, we make some improvement on it. This improved two - point multi - section algorithm uses the auto - split - section method, so needs smaller space to store parameters and less operation time. After this improvement, we mix two - point algorithm and improved two - point multi - section algorithm into a mixed algorithm of two - point multi - section. This mixed algorithm uses these two algorithms for different optical sensor. These designs not only enhance the real - time characteristic but also improve the precision.