A spatial registration method for dual-band infrared images

Abstract

The invention discloses a dual-band infrared image spatial registration method. The method of the invention first constructs a dual-band infrared image spatial registration system, and the constructed system includes: a model building module, a region selection and feature point pair calibration module, and model parameters Determining module, model verification module and dual-band infrared image registration module, constructing the spatial registration affine transformation model through the model building module, area selection and feature point pair calibration module for target area selection and feature point pair calibration, model parameter determination module The parameters in the RST affine transformation model are determined, the model verification module verifies the registration model, and the dual-band infrared image registration module registers the dual-band infrared images. The method of the invention can realize the spatial registration of the static dual-band infrared images, make the spatial features of the two-band images consistent, and solve the problem of inconsistency in the attention target positions during image data fusion. This method has few parameters and simple operation process.

Description

technical field [0001] The invention relates to an image spatial registration method, in particular to a dual-band infrared image spatial registration method. Background technique [0002] Most domestic dual-band infrared cameras or thermal imagers use two independent single-band infrared sensors, and the optical lens adopts the form of common aperture spectroscopic. The primary imaging is performed through the Cassegrain mirror group and the scene, and then the optical path is split by a dichroic mirror, and the subsequent correction mirror group is used for secondary imaging. This way the same scene can be seen on both bands. However, this kind of optical lens requires high processing precision and difficult assembly process. The results and design values ​​of the optical lens often have deviations in the field of view, observation angle, and axis reference position, which makes the imaging results of the same scene different in space. , angle, phase relationship and oth...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a dual-band infrared image spatial domain registration method to solve the problem of inconsistency in the spatial domain characteristics of the dual-band infrared image caused by the difference in the field of view of the optical lens of the dual-band infrared camera on the two bands, the deviation of the optical axis, and the difference in the observation standard. question

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