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Spatial heterodyne interference image registration preprocessing method

A technology of spatial heterodyne and interference images, applied in image data processing, image enhancement, image analysis, etc., can solve the problems of inability to accurately extract feature points, complex operations, low real-time performance, etc., to eliminate interference fringes and improve performance. Accuracy, the effect of improving registration accuracy

Pending Publication Date: 2021-11-02
GUILIN UNIV OF ELECTRONIC TECH
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Problems solved by technology

The SIFT algorithm has great advantages in the extraction of invariant features of images, but when the target edge is smooth, it cannot accurately extract feature points, and sometimes even fewer feature points are extracted, and the calculation is complex and the real-time performance is not high.

Method used

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  • Spatial heterodyne interference image registration preprocessing method
  • Spatial heterodyne interference image registration preprocessing method
  • Spatial heterodyne interference image registration preprocessing method

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Embodiment

[0027] refer to figure 1 , a spatial heterodyne interference image registration preprocessing method, comprising the following steps:

[0028] 1) According to the characteristics of the interference fringes of the spatial heterodyne interference image, generate a general fringe module that eliminates the spatial heterodyne interference fringes;

[0029] 2) Use the generated fringe elimination module to preliminarily eliminate interference fringes on the spatial heterodyne interference image to be registered;

[0030] 3) Perform further processing on the spatial heterodyne interference image after the preliminary interference fringe elimination processing, eliminate the remaining interference fringes, and complete the registration preprocessing of the spatial heterodyne interference image.

[0031] The process described in step 1) to generate a general fringe module for eliminating spatial heterodyne interference fringes is:

[0032] 1-1) Based on the design parameters of the...

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Abstract

The invention discloses a spatial heterodyne interference image registration preprocessing method, which comprises the following steps of: generating a general fringe module for eliminating spatial heterodyne interference fringes according to the characteristics of the spatial heterodyne interference image fringes; performing preliminary interference fringe elimination processing on the spatial heterodyne interference image to be registered by using a general fringe module; and carrying out local processing on the spatial heterodyne interference image after preliminary interference fringe elimination processing, eliminating residual interference fringes, and completing spatial heterodyne interference image registration preprocessing. According to the method, the interference fringes of the spatial heterodyne interference image can be quickly eliminated, so that the registration precision is improved.

Description

technical field [0001] The invention relates to the technical field of optical remote sensing imaging, in particular to a spatial heterodyne interference image registration preprocessing method. Background technique [0002] Spatial heterodyne interferometric imaging spectrometer is a highly sensitive and highly stable interferometric imaging spectrometer, which has the advantages of high luminous flux and high spectral resolution. Spatial heterodyne interferometric imaging spectrometer relies on the push-broom of the target to obtain two-dimensional spatial information and one-dimensional interference information, and then use the Fourier transform to obtain the spectral information of ground objects. For the spatial heterodyne interferometric imaging spectrometer system, in the process of obtaining complete interference information through push-broom, various changes may occur due to the instability of the detector or push-broom orbit, resulting in errors such as rotation ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/33
CPCG06T7/33G06T2207/10032
Inventor 叶松李炤林汪杰君李树王新强王方原张文涛
Owner GUILIN UNIV OF ELECTRONIC TECH
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