DISTORTION MEASUREMENT AND CORRECTION FOR SPECTRALLY ENCODED ENDOSCOPY

    公开(公告)号:US20190080439A1

    公开(公告)日:2019-03-14

    申请号:US16124545

    申请日:2018-09-07

    Inventor: Tzu-Yu Wu Bin Wu

    Abstract: Methods, apparatuses, systems, and storage mediums for correcting distortion of a spectrally encoded endoscopy (SEE) image are provided. A first reference pattern comprising a plurality of radial lines is scanned with an SEE spectral line to obtain a first image. Signs of a tangential shift and/or of a radial shift of the spectral line may be determined, and magnitudes of the tangential shift and of the radial shift may be computed. A second reference pattern comprising at least a circle with the SEE spectral line may be scanned to obtain a second image in a case where the radial shift is positive. The magnitude of the radial shift may be computed based on the magnitude of the tangential shift and a radius of the circle. The tangential shift and the radial shift may then be applied for correcting distortion.

    Method of compensating frequency drift in an interferometer

    公开(公告)号:US09846078B2

    公开(公告)日:2017-12-19

    申请号:US14345471

    申请日:2011-10-17

    CPC classification number: G01J3/45 G01J2003/283

    Abstract: Compensating for frequency drift of a reference energy source in an FT interferometer based spectrometer instrument may include obtaining data representing a reference interferogram collected in response to a trigger signal having been generated in dependence on the emission frequency of the reference energy source, and subsequently obtaining data representing a target interferogram recorded by the FT interferometer in response to a trigger signal also having been generated in dependence on the emission frequency of the reference energy source in the same manner. The method may further include comparing the obtained data to determine a phase shift between the interferograms in a window in at least one region away from center-burst, and generating a mathematical transform dependent on the determined shift to be subsequently applied to generate data representing a frequency stabilized interferogram of an unknown sample recorded by the FT interferometer.

    Determination and Correction of Frequency Registration Deviations for Quantitative Spectroscopy
    68.
    发明申请
    Determination and Correction of Frequency Registration Deviations for Quantitative Spectroscopy 有权
    定量光谱频率注册偏差的确定与校正

    公开(公告)号:US20170038257A1

    公开(公告)日:2017-02-09

    申请号:US14817119

    申请日:2015-08-03

    Abstract: A frequency registration deviation is quantified for a field spectrum collected during analysis by a spectroscopic analysis system of a sample fluid when the spectroscopic analysis system has deviated from a standard calibration state. The field spectrum is corrected based on the frequency registration deviation using at least one spectral shift technique, and a concentration is calculated for at least one analyte represented by the field spectrum using the corrected field spectrum. Related systems, methods, and articles are described.

    Abstract translation: 当光谱分析系统偏离标准校准状态时,通过样品流体的光谱分析系统在分析期间收集的场光谱量化频率对准偏差。 使用至少一个光谱偏移技术,基于频率配准偏差校正场频谱,并且使用校正的场频谱计算由场频谱表示的至少一个分析物的浓度。 描述相关系统,方法和文章。

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