Montrésor Silvio, Memmolo Pasquale, Bianco Vittorio, Ferraro Pietro, Picart Pascal
J Opt Soc Am A Opt Image Sci Vis. 2019 Feb 1;36(2):A59-A66. doi: 10.1364/JOSAA.36.000A59.
This paper presents a comparative study of multi-look approaches for de-noising phase maps from digital holographic interferometry. A database of 160 simulated phase fringe patterns with eight different phase fringe patterns with fringe diversity was computed. For each fringe pattern, 20 realistic noise realizations are generated in order to simulate a multi-look process with 20 inputs. A set of 22 de-noising algorithms was selected and processed for each simulation. Three approaches for multi-look processing are evaluated. Quantitative appraisal is obtained using two metrics. The results show good agreement for algorithm rankings obtained with both metrics. One singular and highly practical result of the study is that a multi-look approach with average looks before noise processing performs better than averaging computed with all de-noised looks. The results also demonstrate that the two-dimensional windowed Fourier transform filtering exhibits the best performance in all cases and that the block-matching 3D (BM3D) algorithm is second in the ranking.
本文介绍了一种用于数字全息干涉术去噪相位图的多视方法的比较研究。计算了一个包含160个模拟相位条纹图案的数据库，这些图案具有8种不同的具有条纹多样性的相位条纹图案。对于每个条纹图案，生成20个逼真的噪声实现，以模拟具有20个输入的多视过程。为每个模拟选择并处理了一组22种去噪算法。评估了三种多视处理方法。使用两个指标进行定量评估。结果表明，两种指标获得的算法排名具有良好的一致性。该研究的一个独特且非常实用的结果是，在噪声处理之前进行平均视数的多视方法比使用所有去噪视数计算的平均值表现更好。结果还表明，二维加窗傅里叶变换滤波在所有情况下都表现出最佳性能，块匹配3D（BM3D）算法在排名中位居第二。
