Now showing items 1-5 of 5
Phase retrieval in arbitrarily shaped aperture with the transport-of-intensity equation
Phase is not easy to detect directly as intensity, but sometimes it contains the really desired information. The transport-of-intensity equation (TIE) is a powerful tool to retrieve the phase from the intensity. However, ...
Silicon wafer microstructure imaging using InfraRed Transport of Intensity Equation
A novel quantitative 3D imaging system of silicon microstructures using InfraRed Transport of Intensity Equation (IRTIE) is proposed in this paper. By recording the intensity at multiple planes and using FFT or DCT based ...
Sampling moiré as a special windowed Fourier ridges algorithm in demodulation of carrier fringe patterns
In recent times, both the windowed Fourier ridges (WFR) and sampling moiré (SM) algorithms have been extensively used due to their high effectiveness in the demodulation of carrier fringe patterns. As they are developed ...
Wavefront subaperture stitching with Shack-Hartmann sensor
A new approach for large field of view measurement using the Shack-Hartmann wavefront sensor (SHWS) is proposed. The object to be measured is divided into several subaperture units. Each unit is measured using the SHWS and ...
Phase-space analysis of transport of intensity equation under partially coherent illumination
We introduced a generalized version of the transport of intensity equation from a partially coherent phase-space perspective that relates axial intensity derivative to the transverse divergence of the conditional frequency ...