Measurable speckle gradation Hadamard single-pixel imaging  

作　　者：周立宇 白艳锋 付芹 朱孝辉 黄贤伟 邹璇彭凡 傅喜泉 Liyu Zhou;Yanfeng Bai;Qin Fu;Xiaohui Zhu;Xianwei Huang;Xuanpengfan Zou;Xiquan Fu(College of Computer Science and Electronic Engineering,Hunan University,Changsha 410082,China;School of Computer Science,Hubei University of Technology,Wuhan 430068,China)

机构地区：[1]College of Computer Science and Electronic Engineering,Hunan University,Changsha 410082,China [2]School of Computer Science,Hubei University of Technology,Wuhan 430068,China

出　　处：《Chinese Optics Letters》2024年第3期31-35,共5页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.62101187,61971184,and 62001162);the Hunan Provincial Natural Science Foundation(No.2022JJ40091);the Fundamental Research Funds for the Central Universities(No.531118010757)。

摘　　要：The array spatial light field is an effective means for improving imaging speed in single-pixel imaging.However,distinguishing the intensity values of each sub-light field in the array spatial light field requires the help of the array detector or the time-consuming deep-learning algorithm.Aiming at this problem,we propose measurable speckle gradation Hadamard single-pixel imaging(MSG-HSI),which makes most of the refresh mechanism of the device generate the Hadamard speckle patterns and the high sampling rate of the bucket detector and is capable of measuring the light intensity fluctuation of the array spatial light field only by a simple bucket detector.The numerical and experimental results indicate that data acquisition in MSG-HSI is 4 times faster than in traditional Hadamard single-pixel imaging.Moreover,imaging quality in MSG-HSI can be further improved by image stitching technology.Our approach may open a new perspective for single-pixel imaging to improve imaging speed.

关 键 词：single-pixel imaging array spatial light field measurable speckle gradation 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]