Pairs coding compression hyperspectral imaging device

A technology of hyperspectral imaging and encoding compression, which is applied in the field of dual encoding compression hyperspectral imaging devices, can solve the problem of sacrificing spectral image resolution, etc., and achieve the effect of increasing the application range and facilitating users

Active Publication Date: 2014-05-21
TSINGHUA UNIV
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Since snapshot hyperspectral imaging multiplexes high-dimensional signals onto

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  • Pairs coding compression hyperspectral imaging device
  • Pairs coding compression hyperspectral imaging device
  • Pairs coding compression hyperspectral imaging device

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Embodiment Construction

[0030] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote 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.

[0031] 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 e...

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Abstract

The invention provides a pairs coding compression hyperspectral imaging device. The pairs coding compression hyperspectral imaging device comprises an eye lens for converging and imaging a scene hyperspectral signal, a spatial light modulator for performing spatial modulation on the hyperspectral signal, a diffraction grating for dispersing the modulated hyperspectral signal to obtain a dispersion spectrum of spatial coding, a spectrum modulator for realizing spectrum modulation on the hyperspectral signal, a the band-pass filter for filtering spectrums of unneeded spectrum segments, and a CCD (Charge Coupled Device) sensor for recording and storing images. According to the device in the embodiment, pairs coding three-dimensional hyperspectral data are coded into images acquired by a two-dimensional sensor by using patterns of the spatial light modulator and the spectrum modulator varying in a synergic manner within single exposure time. By designing different light modulation functions and applying corresponding reconstruction algorithms, a plurality of different acquisition modes, comprising programmable space variant filters, multipath multiplex hyperspectral imaging and high-resolution compression hyperspectral imaging are realized.

Description

technical field [0001] The invention relates to the technical field of spectral imaging, in particular to a device for dual coding compressed hyperspectral imaging. Background technique [0002] Hyperspectral imaging involves collecting a three-dimensional data cube that changes from two-dimensional space and one-dimensional spectrum, and plays an important role in the fields of remote sensing, monitoring, and spectroscopy. The most commonly used method for hyperspectral imaging is to record one or several data points at a time by mechanical scanning or sequential scanning. The snapshot (snapshot) hyperspectral imaging method obtains complete three-dimensional data by collecting an image, which makes it have obvious advantages over the scanning method when collecting dynamic scenes or aerial photography. Since snapshot hyperspectral imaging multiplexes high-dimensional signals onto a two-dimensional CCD sensor, the resolution of the spectral image is sacrificed. Traditiona...

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Application Information

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IPC IPC(8): G01J3/28
Inventor 戴琼海林星戴威
Owner TSINGHUA UNIV
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