Calibration data processing method for light field spectral imaging spectrometer

A spectral imaging and calibration data technology, applied in the field of optical imaging, can solve problems such as inconsistency in response, achieve the effect of solving inconsistency and improving calibration accuracy

Active Publication Date: 2018-09-07
BEIHANG UNIV
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Problems solved by technology

Due to system assembly errors and optical diffraction, a single pixel actually receives information from multiple spectral segments of the target, and directly extracting a single pixel cannot represent a certain spectral segment. In addition, due to the difference in incident radiation between channels with different filter characteristics, And the responses under different microlenses are inconsistent

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  • Calibration data processing method for light field spectral imaging spectrometer
  • Calibration data processing method for light field spectral imaging spectrometer
  • Calibration data processing method for light field spectral imaging spectrometer

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Embodiment Construction

[0019] 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.

[0020] 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 invention discloses a calibration data processing method for a light field spectral imaging spectrometer. The method comprises: S1: providing a monochromatic uniform surface light source, and illuminating the light field imaging spectrometer with the monochromatic uniform surface light source; S2, acquiring the calibration data of the light field imaging spectrometer in the light passing windows of respective optical filters, and calculating a spectral band response matrix according to the calibration data; S3, determining a radiation response proportional coefficient, and obtaining an actual aliasing matrix according to the radiation response proportional coefficient and the spectral band response matrix; and S4, extracting the spectral data of a selected scene, and reconstructing a cube according to the spectral data of the selected scene. The method has the following advantages of improving the calibration accuracy of the response matrix, solving the inconsistency of the radiation, and obtaining the target complete data cube by one exposure.

Description

technical field [0001] The invention relates to optical imaging technology, belongs to the technical field of instrument testing and calibration, in particular to a calibration data processing method of a light field spectral imaging spectrometer. Background technique [0002] As one of the remote sensing detection technologies, imaging spectrometer can obtain the spectral information of scenery or targets. It has a wide range of application values ​​in the fields of target recognition, feature extraction and precise classification. Observations on land, atmosphere and ocean. Light field imaging spectroscopy technology is a kind of snapshot imaging spectroscopy technology, which can obtain the complete data cube of the target in one exposure. Snapshot imaging spectroscopy technology has advantages and broad application prospects in dynamic target monitoring and tracking. On the other hand, radiometric correction and high-precision extraction of imaging spectral data are the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/02
CPCG01J3/0297
Inventor 苏丽娟袁艳王世丰刘宇健
Owner BEIHANG UNIV
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