High-resolution single-photon imaging method and system combined with physical noise model

Abstract

The invention discloses a high-resolution single-photon imaging method and system combined with a physical noise model. The method comprises the steps of building the physical noise model of a single-photon detection array, calibrating the parameters of the single-photon detection array, and simulating the photon detection efficiency of the single-photon detection array, the Poisson process of photons, the crosstalk of the detection array, the post-pulse and other noise factors, downsampling the high-resolution picture into a plurality of low-resolution pictures and adding the low-resolution pictures into the noise model to generate a low-resolution noisy data set, constructing a deep learning neural network, and training the network by taking the low-resolution noisy picture as an input and the high-resolution picture as a true value to obtain optimized network model parameters, and finally, recovering a high-resolution noise-free picture from the low-resolution noisy picture by usingthe trained network. The method is combined with an actual physical model, the measurement noise of the single-photon detection array can be effectively reduced, and the imaging resolution of the single-photon detection array can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of computational photography, in particular to a high-resolution single-photon imaging method and system combined with a physical noise model. Background technique [0002] Since the 1990s, single-photon detectors have played an increasingly important role in scientific and industrial settings. The single photon detector is a solid-state detector with advanced photon counting and photon timing functions, and its sensitivity is in the range of visible light or near-infrared single photon level. [0003] Single-photon detectors are currently used in a wide range of scientific and industrial applications. The field of microscopic detection was one of the first fields to use these highly sensitive detectors. Confocal laser scanning microscopy, fluorescence lifetime imaging microscopy, and fluorescence correlation spectroscopy all use single-photon detectors. Modern super-resolution techniques such as simulated...

AI Technical Summary

Problems solved by technology

[0005] However, the current SPAD detectors have the following two problems that affect the imaging quality: (1) low resolution. The resolutions of existing SPAD detection arrays generally include: 20*20, 40*40 and 60*60 resolutions, Difficult to apply to actual scenarios; (2) Contains a variety of noises, including Poisson noise, photon detection efficiency, photon response inhomogeneity, and crosstalk noise

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