digHolo : High-speed library for off-axis digital holography and Hermite-Gaussian decomposition скачать в хорошем качестве

digHolo : High-speed library for off-axis digital holography and Hermite-Gaussian decomposition

digHolo is an open-source off-axis digital holography library, written in C++ for the x86-64 architecture. Particularly fast at extracting Hermite-Gaussian modal coefficients (and related spatial decompositions such as Laguerre-Gaussian). Compatible with Linux and Windows. Usage code examples are supplied for Matlab, Python and C++. As is a precompiled statically linked Windows DLL and full documented User Guide. https://github.com/joelacarpenter/dig... If you use this library, please cite the arXiv User Guide for digHolo so I can justify my work to my funding overlords. https://arxiv.org/abs/2204.02348 Introduction 0:00 What does digHolo do? 1:41 What can computers can it run on? 2:16 How can I use it? 2:48 How fast is it? Processing pipeline 5:55 Input frames (Camera plane, source of FFT) 8:05 Fourier plane (pick the off-axis window, source of IFFT) 8:35 Reconstructed field (output fields as pixel array) 8:50 Modal decomposition (output fields as modal coefficients) Matlab script example 9:30 Matlab example script walkthrough Basic setup 17:45 digHolo functions and usage 17:54 digHoloCreate() (Create a new pipeline) 18:30 digHoloDestroy() (Free memory when done) 18:35 digHoloSetFrameBuffer() (Where are the input frames?) 19:20 digHoloSetFrameDimensions() (Pixel width/height of frames) 19:25 digHoloSetFramePixelSize() (Physical dimensions of a pixel) 19:57 digHoloConfigSetWavelengthCentre() (Operating wavelength) 20:12 digHoloConfigSetPolCount() (Number of polarisation components) 20:20 digHoloConfigSetBatch() (How many frames to process together?) Setting the key parameters 20:30 Key off-axis digital holography parameters (beam centre, tilt, defocus etc) 20:55 Setting parameters manually vs. AutoAligh() 21:05 digHoloConfigSetBeamCentre() (Physical location of the centre of the Object wave) 21:21 digHoloConfigSetTilt() (Location of Reference wave in Fourier space) 21:25 digHoloConfigSetDefocus() (Relative defocus between Object/Reference to be removed) 22:08 digHoloConfigSetfftWindowSize() (Numerical dimensions of FFT) 22:20 digHoloConfigSetFourierWindowRadius() (Radius of IFFT window as a width in Fourier space) 23:14 Setting parameters manually vs. AutoAlign() Modal decomposition 23:54 Modal decomposition parameters 24:23 digHoloConfigSetBasisGroupCount() (Mode orders to include in HG decomposition) 24:57 digHoloConfigSetBasisWaist() (HG waist radius) 25:15 Polarisation lock (Forcing parameters for each polarisation to be identical) 25:40 Modal decompositions other than Hermite-Gaussian Process the frames and get the results 26:35 digHoloProcessBatch() (Run the pipeline) 28:20 digHoloBasisGetCoefs() (Get pointers to the basis coefficients) 28:36 digHoloGetFields()/digHoloGetFields16 (Get the reconstructed fields) 28:24 digHoloBatchGetSummary() (Get analysis of properties of individual frames/batch) Other features 29:50 Viewport (Basis plotting) 30:07 Command-line usage 30:36 Console printout 31:00 Test frame generator (off-axis digital holography simulator) 31:18 Wavelength-dependent batches 31:33 Averaging 31:58 Calibration (non-uniform Reference, non-uniform frame settings) 32:20 Performance, threading and benchmarking