WebFourier ptychography is a new type of computational imaging technology, which uses a stack of low‐resolution images obtained from overlapped apertures (or equivalent) to reconstruct super‐resolved image. ... The results show that the proposed algorithm can accurately find the aperture position and improve the reconstruction quality. WebPtychography is a lensless method that is being used to image samples through a simultaneous numerical inversion of a large number of diffraction patterns from adjacent overlapping scan positions. ... Researchers could use this dataset to evaluate the performance of machine learning algorithms to classify various distracting activities and …
An improved ptychographical phase retrieval algorithm for …
WebDec 22, 2024 · In the mid-2000s, ptychography was ‘re-discovered’ and started to pick up momentum, essentially triggered by the theoretical introduction of a first iterative algorithm (the PIE) 10,11. WebJan 28, 2024 · The scaled-Fourier-transform-based ptychography algorithm is implemented, which is a modification of the traditional FPM algorithm with complex pupil recovery [1, 5, 10]. A pseudo-MATLAB code is provided here (2) Define kx, ky vectors for LEDs, CCD pixel size spsize, high-resolution pixel size psize, ... classics by jantzen
X-ray ptychography Nature Photonics
WebPtychography Diffractive imaging abstract The ptychographical iterative engine (or PIE) is a recently developed phase retrieval algorithm that employs a series of diffraction patterns … WebJul 7, 2024 · We derive a set of ptychography phase-retrieval iterative engines based on proximal algorithms originally developed in convex optimization theory, and discuss their connections with existing ones. The use of proximal operator creates a simple frame work that allows us to incorporate the effect of noise from a maximum-likelihood (ML) principle. WebNov 10, 2015 · Fourier ptychography is a new computational microscopy technique that provides gigapixel-scale intensity and phase images with both wide field-of-view and high … classic scarey movies on you tube