A method of infrared image preprocessing and correction

Abstract

The invention discloses an infrared image preprocessing and correction method, which is characterized in that it includes the following steps: Step 1: Use an infrared detector with a lens to collect the overall infrared image data X of the target; Step 2: Use an infrared detector with a lens Collect the overall data of high-temperature infrared images of blackbody targets at high temperatures H1 and overall data of low-temperature infrared images of blackbody targets at low temperatures L1 , and calculate the overall high-temperature infrared image data X H1 and low-temperature infrared image overall dataX L1 correction parameter a between 1 and b 1 . The present invention introduces lens-mounted and lensless infrared detectors to collect data and performs two-point correction processing, thereby reducing image non-uniformity caused by infrared detector block noise, thereby making the pre-processing correction effect of infrared images more accurate. At the same time, the invention has simple calculation, high processing efficiency, good real-time performance, has good market potential, and can perform preprocessing non-uniform 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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