PIE成像中周期性重建误差的研究
Study on the p erio dic error in ptychographic iterative engine imaging
-
摘要: 本文分析了PIE技术中周期性误差出现的根本原因,并在此基础上提出一种能明显减小此种误差的方法。通过将现有PIE成像技术中的定步长二维周期扫描变为步长和方向都不确定的随机二维扫描,可以根本上去除样品重建像中的周期性误差,从而得到准确的相位和振幅像,对提高PIE成像的精度有较好的现实意义。Abstract: Based on the analysis of the periodic error in the reconstructed image of the ptychographic iterative engine (PIE), the cause in mathematics for this kind of error is found out, and then a method is proposed to eliminate it. By replacing the 2D periodic scanning of fixed step interval in common PIE imaging with the 2D raster scanning of changing step interval, the periodical error in the reconstructed images can be dramatically reduced, and then the accuracy of the PIE imaging is remarkably improved. Both the theoretical investigation and numerical simulations are presented.
-
-
计量
- 文章访问数: 341
- HTML全文浏览数: 54
- PDF下载数: 0
- 施引文献: 0