基于红外相机积分时间的辐射特性测量精度分析

Accuracy Analysis of Radiation Characteristic Measurement Based on Integral Time of Infrared Camera

在进行辐射特性测量时,红外相机积分时间的选取是影响特性测量精度的重要因素。针对该问题,以辐射特性测量实验数据为基础,对同一温度、不同积分时间下的红外图像对比度、信噪比以及辐射特性测量精度进行了分析。结果表明,积分时间通过影响红外图像的对比度和信噪比进而影响了辐射特性测量精度。适当延长红外相机的积分时间,可以增强图像的对比度和信噪比,从而提高辐射特性测量精度。该结果对红外辐射特性测量系统相机积分时间的选取具有指导意义。

In the measurement of radiation characteristics,the selection of integration time of infrared camera is an important factor affecting the accuracy of characteristic measurement.To solve this problem,the infrared image contrast,image signal-to-noise ratio and radiation characteristics measurement accuracy under the same temperature and different integration time are analyzed in this paper based on the experimental data of radiation characteristics measurement.The analysis results show that the integration time affects the measurement accuracy of radiation characteristics by affecting the contrast and signal-to-noise ratio of infrared image.Appropriately improving the integration time of infrared camera can enhance the contrast and signal-to-noise ratio of image,so as to improve the measurement accuracy of radiation characteristics.The results have guiding significance for the selection of camera integration time of infrared radiation characteristic measurement system.