Performance Characterization of Deep-Phase-Retrieval Shack-Hartmann Wavefront Sensors
IEEE Photonics Journal, 2023 Shack-Hartmann wavefront sensor (SHWFS) is the most popular wavefront sensor in adaptive optics systems. The Deep-Phase-Retrieval Wavefront Reconstruction (DPRWR) method, which was proposed by our group previously, is a kind of deep learning-based ...
Manting Zhang, Youming Guo
doaj +1 more source
Wavefront measurement method based on improved light field camera
Results in Physics, 2020 The light field camera is used in the wavefront sensing field because of its simple structure, large field of view, high utilization rate of light energy, etc.
Xin Chen +7 more
doaj +1 more source
A Local Threshold Checkerboard Algorithm for Adaptive Optics System With a Plenoptic Sensor
IEEE Photonics Journal, 2022 Adaptive optics systems will encounter challenges under strong atmospheric turbulence conditions. Recently, a modified approach based on plenoptic sensor has attracted considerable attention.
Zhichong Wang +5 more
doaj +1 more source
Shack–Hartmann Wavefront Sensing Based on Four-Quadrant Binary Phase Modulation
Photonics, 2022 Aiming at the problem that it is difficult for the conventional Shack–Hartmann wavefront sensor to achieve high-precision wavefront reconstruction with low spatial sampling, a kind of Shack–Hartmann wavefront sensing technology based on four-quadrant ...
Mengmeng Zhao +7 more
doaj +1 more source
Nonlinear wavefront reconstruction with convolutional neural networks for Fourier-based wavefront sensors. [PDF]
Optics Express, 2020 Fourier-based wavefront sensors, such as the Pyramid Wavefront Sensor (PWFS), are the current preference for high contrast imaging due to their high sensitivity.
Rico Landman, S. Haffert
semanticscholar +1 more source
COMPARISON OF HOLOGRAPHIC AND ITERATIVE METHODS FOR AMPLITUDE OBJECT RECONSTRUCTION [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2015 Experimental comparison of four methods for the wavefront reconstruction is presented. We considered two iterative and two holographic methods with different mathematical models and algorithms for recovery.
I. A. Shevkunov, N. V. Petrov
doaj +1 more source
Surface Measurement Using Compressed Wavefront Sensing
Photonic Sensors, 2018 Compressed sensing leverages the sparsity of signals to reduce the amount of measurements required for its reconstruction. The Shack-Hartmann wavefront sensor meanwhile is a flexible sensor where its sensitivity and dynamic range can be adjusted based on
Eddy Mun Tik Chow +3 more
doaj +1 more source
Wavefront coding image reconstruction via physical prior and frequency attention.
Optics Express, 2023 Wavefront coding (WFC) is an effective technique for extending the depth-of-field of imaging systems, including optical encoding and digital decoding. We applied physical prior information and frequency domain model to the wavefront decoding, proposing a
Qinghan Zhang +4 more
semanticscholar +1 more source
Study on Aberration Correction of Adaptive Optics Based on Convolutional Neural Network
Photonics, 2021 The existence of aberrations has always been an important limiting factor in the imaging field. Especially in optical microscopy imaging, the accumulated aberration of the optical system and the biological samples distorts the wavefront on the focal ...
Jin Li +6 more
doaj +1 more source
Making the unmodulated Pyramid wavefront sensor smart. Closed-loop demonstration of neural network wavefront reconstruction with MagAO-X [PDF]
Astronomy & AstrophysicsAlmost all current and future high-contrast imaging instruments will use a Pyramid wavefront sensor (PWFS) as a primary or secondary wavefront sensor.
Rico Landman +14 more
semanticscholar +1 more source