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Fast single-pixel frequency-domain imaging method based on time-division multiplexing

A technology of time-division multiplexing and imaging method, which is applied in the direction of image communication, color TV parts, TV system parts, etc., can solve the problem of limiting single-pixel imaging speed, etc., and achieve the effect of reducing the number and improving the imaging speed

Active Publication Date: 2019-10-29
TSINGHUA UNIV +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, single-pixel imaging needs to modulate the object image or illumination pattern, and obtain the information of the imaging object through multiple measurements under different modulation states, which limits the speed of single-pixel imaging and is one of the main bottlenecks restricting the wide application of this method.

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  • Fast single-pixel frequency-domain imaging method based on time-division multiplexing
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  • Fast single-pixel frequency-domain imaging method based on time-division multiplexing

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Embodiment Construction

[0022] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0023] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element refe...

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Abstract

The present invention proposes a fast single-pixel frequency-domain imaging method based on time-division multiplexing, which includes the following steps: S1: build an imaging system; S2: modulate the lighting pattern with a spatial light modulator at the lighting end, and obtain a linear superposition of multiple two-dimensional sinusoidal patterns The obtained multiplexed illumination pattern; S3: The digital micromirror array is used to modulate the frequency domain of the obtained multiplexed illumination pattern to obtain the light intensity collected by the single-pixel detector when each sinusoidal pattern illuminates the sample; S4: According to the obtained When each sinusoidal pattern irradiates the sample, the light intensity collected by the single-pixel detector is used to recover the corresponding sample. The invention can greatly reduce the total number of modulation patterns required by the spatial light modulator, increase the imaging speed by an order of magnitude, and have a driving effect on the practical application of single-pixel imaging.

Description

technical field [0001] The invention relates to the technical fields of single-pixel imaging and computational photography, in particular to a fast single-pixel frequency-domain imaging method based on time division multiplexing. Background technique [0002] Computational single-pixel imaging is an emerging imaging method, which is different from traditional digital imaging technologies that use photosensitive arrays such as CCD (Charge Coupled Device) and CMOS (Complementary Metal Oxide Semiconductor) as core components. Compared, the detector of this method is a barrel detector with only one pixel unit. Single-pixel detectors have a wide spectral response range and strong light sensitivity, and have great application prospects in extremely weak light imaging and imaging through scattering media. However, single-pixel imaging needs to modulate the object image or illumination pattern, and obtain the information of the imaging object through multiple measurements under dif...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/232
CPCH04N23/80
Inventor 戴琼海刘文辉王好谦
Owner TSINGHUA UNIV
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