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Measurable speckle gradation Hadamard single-pixel imaging
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作者 周立宇 白艳锋 +4 位作者 付芹 朱孝辉 黄贤伟 邹璇彭凡 傅喜泉 《Chinese Optics Letters》 SCIE EI CAS CSCD 2024年第3期31-35,共5页
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... 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. 展开更多
关键词 single-pixel imaging array spatial light field measurable speckle gradation
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Principle of subtraction ghost imaging in scattering medium
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作者 付芹 白艳锋 +3 位作者 谭威 黄贤伟 南苏琴 傅喜泉 《Chinese Physics B》 SCIE EI CAS CSCD 2023年第6期250-254,共5页
Scattering medium in light path will cause distortion of the light field,resulting in poor signal-to-noise ratio(SNR)of ghost imaging.The disturbance is usually eliminated by the method of pre-compensation.We deduce t... Scattering medium in light path will cause distortion of the light field,resulting in poor signal-to-noise ratio(SNR)of ghost imaging.The disturbance is usually eliminated by the method of pre-compensation.We deduce the intensity fluctuation correlation function of the ghost imaging with the disturbance of the scattering medium,which proves that the ghost image consists of two correlated results:the image of scattering medium and the target object.The effect of the scattering medium can be eliminated by subtracting the correlated result between the light field after the scattering medium and the reference light from ghost image,which verifies the theoretical results.Our research may provide a new idea of ghost imaging in harsh environment. 展开更多
关键词 ghost imaging image reconstruction techniques scattering medium
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