MRTD-based microscopic thermal imaging system performance evaluation method and system

Abstract

The invention relates to an MRTD-based microscopic thermal imaging system performance evaluation method and system. The method comprises the following steps: determining a spectral radiation flux difference of a microscopic thermal imaging system according to a light path structure of the microscopic thermal imaging system; determining an image signal-to-noise ratio of the to-be-measured target received by the microscopic thermal imaging system according to an imaging process of the microscopic thermal imaging system; determining an output image signal-to-noise ratio of a microscopic thermal imaging system according to the spectral radiation flux difference and the image signal-to-noise ratio of the to-be-measured target; determining the minimum resolvable temperature difference of the microscopic thermal imaging system according to the output image signal-to-noise ratio of the microscopic thermal imaging system, the noise equivalent temperature difference of the microscopic thermal imaging system and the minimum resolvable temperature difference of the telescopic mode; and evaluating the temperature resolution capability of the microscopic thermal imaging system according to the minimum resolvable temperature difference of the microscopic thermal imaging system. According to the invention, the performance of the microscopic thermal imaging system can be evaluated accurately and comprehensively.

Description

technical field [0001] The invention relates to the field of performance detection of a microthermography system, in particular to a performance evaluation method and system for a microthermography system based on MRTD. Background technique [0002] Infrared imaging system can reflect the temperature distribution of objects and has strong penetrating ability, so it has been widely used in the fields of military investigation and industrial fault detection, medical diagnosis and scientific research. In order to optimize and improve the performance of the system, infrared imaging system The performance prediction and evaluation of thermal imaging systems are becoming more and more important. There are a series of performance indicators to evaluate the performance of thermal imaging systems, such as: instantaneous field of view (IFOV), modulation transfer function (MTF), minimum resolvable temperature difference (MRTD), etc. Among them, MRTD is the main parameter to comprehensi...

AI Technical Summary

Problems solved by technology

Since the differences in the imaging optical path structure and spectral radiant flux between the micro-thermography system and the telephoto imaging system are not comprehensively considered, none of the above methods can accurately and comprehensively evaluate the performance of the micro-thermography system. Standard Method for Temperature Resolution Capability of Microthermography Systems

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