Non-uniformity correction method based on scene adaptation and hardware implementation device thereof

Abstract

The invention provides a non-uniformity correction method based on scene adaptation and a hardware implementation device thereof, and the method comprises the steps: collecting an original infrared image, obtaining pixel data, and carrying out the statistics of the number of frames; initializing correction parameters of the original infrared image to obtain an initial gain correction coefficient and an initial offset correction coefficient; entering an initial correction mode, and determining a current correction mode, carrying out non-uniform correction frame by frame according to the frame number, judging whether an initial gain correction coefficient and an initial offset correction coefficient are updated or not; when it is judged that updating is not carried out, obtaining corrected pixel data, and when it is judged that updating is carried out, obtaining updated correction parameters and corrected pixel data, wherein the corrected pixel data are corrected infrared images; cachingthe corrected infrared image and the updated correction parameters, and storing the infrared image and the updated correction parameters in an external data storage module. The device comprises an input cache module, a non-uniformity correction module, an offset accumulation calculation module, a parameter updating module, an output cache module and an external data storage module.

Description

technical field [0001] The invention belongs to the field of information technology, and in particular relates to a non-uniform correction method based on scene adaptation and a hardware implementation device thereof. Background technique [0002] In recent years, infrared imaging technology has continued to improve, especially the emergence of infrared focal plane arrays with sensitive response, high integration, and low energy consumption, making infrared imaging technology play an indispensable role in various fields such as national security, environmental monitoring, and national economic development. substitute role. Among them, the infrared focal plane array detector has the advantages of high sensitivity, compact structure, long working distance, good anti-interference, strong ability to penetrate smoke and haze, and can work around the clock. It has been used in various fields such as national security, environmental monitoring, and national economic development. L...

AI Technical Summary

Problems solved by technology

The problem with these techniques is that they cannot effectively suppress the response drift that is prevalent in infrared focal plane arrays

However, this type of algorithm is difficult to be practical due to the many requirements and restrictions, the large amount of calculation and storage, and the correction error is easy to accumulate and spread step by step.

The three patents with publication number CN105741238, publication number CN102538973, and publication number CN108665425 all belong to the scope of this type of algorithm. Most of these algorithms have the characteristics of complex algorithm calculation and large storage capacity, and are not conducive to hardware parallel design.

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