Design And Implementation Of Single Photon Imaging Software System Based On Compressive Sensing

In the fields of life sciences,energy sciences,and chemistry,it is of great scientific significance to study the process of production and change of substances in ultra-shortlived and extremely low-light conditions during rapid reaction.However,due to its short life,poor stability and high reactivity,detecting the mechanism of its generation,attenuation and change requires a detection device with ultra-high sensitivity and time resolution.The widely used single-photon detection technology in recent years is a device with extremely high detection sensitivity,which can detect the minimum energy unit photon of light,is the limit of optical detection field,and has the characteristics of fast response.However,the price of a single photon detector array is too expensive,and the manufacturing process is complicated and difficult to obtain,therefore it is not widely used.With a single-point single-photon detector and the principle of compressed sensing sampling algorithm,it can solve the problem of detection sensitivity and array cost at the same time,and can image ultra-short-lived substances under extremely low light conditions.There is a very large application space in areas such as life fluorescence imaging and astronomical detection imaging.The single photon imaging software system studied in this paper is one of the core components of the single photon imaging system.Due to the numerous single-photon imaging system modules,complex external interfaces,large data collection,and strong data interface coupling,there is a high demand for software ease of use and reliability,as well as measurement matrix generation and compressed sensing real-time imaging.Modules also have very high requirements for software performance and data resolution speed.Therefore,it is very necessary to design a software system that supports multiple interfaces,reliable,stable,easy to use,and high performance.It is also an important guarantee for the equipment to perform scientific experiments normally.The software system mainly designs and implements distributed measurement matrix high-speed generation module,DMD drive control module,time measurement and data analysis module,single photon detection and counting module and compressed sensing algorithm package module.In the software design process,a series of innovative technologies,such as distributed computing technology,dynamic DMD frequency modulation technology and multi-thread real-time compressed sensing imaging technology,are introduced into the single photon imaging software system.The generation time of the Gaussian random measurement matrix for fully sample rate at 1024*768 resolution is shortened to 45.19 minutes,and the real-time imaging speed of the compressed sensing algorithm reaches 4.97 Fps at 64*64 resolution,which is characterized by high performance and high availability.Under laboratory conditions,this paper has carried out a comprehensive verification test on the function and performance of the software system.The experiment shows that the single-photon imaging software system based on compressed sensing has good usability and ease of use,and completes the expected function and performance.The index has achieved a very satisfactory imaging effect,which provides a powerful support for the development of single photon time-resolved imaging spectroscopy equipment.