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Single-photon imaging image processing method

An image processing and single-photon technology, applied in the field of image processing, can solve the problem that effective signals cannot obtain high-quality imaging, and achieve the effects of suppressing readout noise, reducing system errors, and improving imaging quality

Active Publication Date: 2020-02-28
中智科仪(北京)科技有限公司
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Problems solved by technology

However, the detector itself has the influence of readout noise and dark noise. Even if the sensitivity of the detector itself is extremely high, the effective signal is easily lost in the noise and high-quality imaging cannot be obtained, especially at the level of only a few photons or even a single photon.

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Embodiment Construction

[0017] The single-photon camera can be a single-photon camera based on a microchannel plate, which mainly includes a double-layer MCP image intensifier, a fiber optic cone coupling lens, a detector, a timing control module, a gating module, a housing and a cover plate, etc.

[0018] Among them, the role of the double-layer MCP image intensifier is to convert the weak light signal incident on its photocathode into an electrical signal, and perform electron multiplication through the multi-stage amplification of the double-layer microchannel plate (MCP), and the electrons will hit the fluorescent screen after multiplication. , through electrical-optical signal conversion, and finally realize the gain and amplification of the optical signal. The optical fiber taper coupling lens uses the total reflection of the optical fiber to couple the amplified optical signal to the target surface of the detector. The detector is used for optical signal acquisition. The timing control module...

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Abstract

The invention provides a single-photon imaging image processing method. The single-photon imaging image processing method comprises the following steps: (101) discriminating single-photon signals of single-frame original data; (102) counting and storing single-frame single photons; (103) counting, superposing and storing a plurality of frames of single photons; and (104) realizing single photon counting gray value imaging. Effective single photon signal discrimination is realized through local contrast normalization and Gaussian kernel template extraction, the detector reading noise and dark noise counting influence is effectively suppressed, the image quality and the imaging effect are improved by combining multi-frame single photon counting imaging, and the method is suitable for two-dimensional large-area array single photon imaging and low-light detection.

Description

technical field [0001] The patent of the present invention relates to the technical field of image processing, in particular to a single-photon imaging image processing method, which is especially suitable for two-dimensional area array single-photon imaging. Background technique [0002] Twilight refers to light that is so weak that the energy of light is so low that it cannot cause the human eye or image sensor to respond in a low-light environment. Low-light imaging technology, through photoelectric conversion, high-performance amplification, transmission and processing, etc., enables human vision or image sensor devices to be effectively expanded in space, time domain and frequency domain, and converts high-quality and clear images that can be recognized by human eyes or image sensors. Image, thus making up for many problems such as low sensitivity, low resolution and poor color recognition ability of human eyes or image sensors in low-light environments, and provides a ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/50G06T5/00G06N20/10
CPCG06T5/50G06N20/10G06T2207/20221G06T5/70
Inventor 任文贞梅林方正军金鹏程
Owner 中智科仪(北京)科技有限公司
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