A method of infrared image preprocessing and correction

Abstract

The invention discloses an infrared image preprocessing correction method. The method is characterized by comprising the following steps of: 1, acquiring infrared image overall data X of a target by adoption of an infrared detector with a camera lens; and 2, acquiring high-temperature infrared image overall data XH1 of a black target at high temperature and low-temperature infrared image overall data XL1 of the black target at low temperature by adoption of the infrared detector with the camera lens, and calculating correction parameters al and b1 between the high-temperature infrared image overall data XH1 and the low-temperature infrared image overall data XL1. According to the method, the infrared detector with the camera lens and an infrared detector without the camera lens are imported to acquire data and carry out two-point correction processing, so that the image heterogeneity caused by catch noises of the infrared detectors is reduced and then the infrared image preprocessing correction effect is more accurate. Meanwhile, the method is simple in operation, high in processing efficiency and good in instantaneity, has good market potential and is capable of carrying out preprocessing heterogeneous correction on various infrared scenes.

Description

technical field [0001] The invention relates to the technical field of infrared image processing, in particular to an infrared image preprocessing correction method. Background technique [0002] Nowadays, the uncooled infrared focal plane detector is one of the fastest-growing types of infrared detectors, and has become an important research direction for researchers at home and abroad. The main principle is to obtain the thermal radiation information of objects in the scene through the infrared focal plane array, and then convert it into electrical signals and enter the back-end for imaging display. The infrared focal plane array has the advantages of small size, light weight, strong anti-interference ability, low power consumption, high sensitivity, etc., and can work stably around the clock. At present, infrared focal plane array imaging has been widely used in various fields such as military security monitoring, military guidance, civilian monitoring, remote sensing, a...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the overall change and non-uniformity of the signal output by the detector caused by the heating of non-main target signals such as the detector shell, lens, and baffle caused by the temperature change of the core and the change of the detector substrate temperature. In order to provide a correction method for infrared image pre-processing, it can affect the temperature resolution of the imaging system and the defect of imaging quality due to the change of temperature.

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