居然还有一种叫超分辨率的技术

文章居然还有一种叫做超分辨率的技术，对大家解决编程问题具有一定的参考价值，需要的程序猿们随着小编来一起学习吧！

居然还有一种叫做超分辨率的技术arXiv:2208.12052 [pdf, ps, other]Super-resolution wavefront reconstructionSylvain Oberti, Carlos Correia, Thierry Fusco, Benoit Neichel, Pierre GuiraudComments: Astronomy & Astrophysics Section: 13. Astronomical instrumentation AA/2023/43954Subjects: Instrumentation and Methods for Astrophysics (astro-ph.IM); Atmospheric and Oceanic Physics (physics.ao-ph); Instrumentation and Detectors (physics.ins-det); Optics (physics.optics)

Super-Resolution (SR) is a technique that seeks to upscale the resolution of a set of measured signals. SR retrieves higher-frequency signal content by combining multiple lower resolution sampled data sets. SR is well known both in the temporal and spatial domains. It is widely used in imaging to reduce aliasing and enhance the resolution of coarsely sampled images.This paper applies the SR technique to the bi-dimensional wavefront reconstruction. In particular, we show how SR is intrinsically suited for tomographic multi WaveFront Sensor (WFS) AO systems revealing many of its advantages with minimal design effort. This paper provides a direct space and Fourier-optics description of the wavefront sensing operation and demonstrate how SR can be exploited through signal reconstruction, especially in the framework of Periodic Nonuniform Sampling. Both meta uniform and nonuniform sampling schemes are investigated. Then, the SR bi-dimensional model for a Shack Hartmann (SH) WFS is provided and the characteristics of the sensitivity function are analyzed. The SR concept is finally validated with numerical simulations of representative multi WFS SH AO systems. Our results show that combining several WFS samples in a SR framework grants access to a larger number of modes than the native one offered by a single WFS and that despite the fixed sub-aperture size across samples. Furthermore, we show that the associated noise propagation is not degraded under SR. Finally, the concept is extended to the signal produced by single Pyramid WFS. In conclusion, SR applied to wavefront reconstruction offers a new parameter space to explore as it decouples the size of the subaperture from the desired wavefront sampling resolution. By cutting short with old assumptions, new, more flexible and better performing AO designs become now possible.

来源： ://arxiv.org/list/astro-ph/new

还要利用一种叫做是WFS, 波前传感器的东西.