论文标题
倾斜 - 然后是模糊的 - 然后倾斜？澄清大气湍流模型
Tilt-then-Blur or Blur-then-Tilt? Clarifying the Atmospheric Turbulence Model
论文作者
论文摘要
长距离成像通常需要高级图像恢复算法来补偿由大气湍流引起的扭曲。但是，与许多标准的恢复问题（例如反卷积）不同，大气湍流的正向图像形成模型没有简单的表达。多亏了该阶段的Zernike表示形式，人们可以表明，正向模型是倾斜（由于线性相对于线性相项而引起的像素移动）和模糊（由于高阶畸变引起的图像平滑）的组合。 然后在两个操作员的订购之间出现混乱。该模型是否应该是倾斜的，然后是模糊的，还是模糊的？文献中的一些论文说该模型是倾斜的，而更多的论文说它是模糊的，然后是倾斜。本文阐明了两者之间的差异，并讨论了为什么倾斜-blur是正确的模型。建议给研究社区。
Imaging at a long distance often requires advanced image restoration algorithms to compensate for the distortions caused by atmospheric turbulence. However, unlike many standard restoration problems such as deconvolution, the forward image formation model of the atmospheric turbulence does not have a simple expression. Thanks to the Zernike representation of the phase, one can show that the forward model is a combination of tilt (pixel shifting due to the linear phase terms) and blur (image smoothing due to the high order aberrations). Confusions then arise between the ordering of the two operators. Should the model be tilt-then-blur, or blur-then-tilt? Some papers in the literature say that the model is tilt-then-blur, whereas more papers say that it is blur-then-tilt. This paper clarifies the differences between the two and discusses why the tilt-then-blur is the correct model. Recommendations are given to the research community.
