Noise characteristic is an important indicator for evaluating an infrared thermal imager. The sources and influence factors of noise were analyzed,and the spatial noise and temporal noise of the real images were calculated through the experiment. The results show that the spatial noise is usually greater than the temporal noise,and the spatial noise gradually increases after nonuniform correction of infrared thermal imager,while temporal noise has no obvious change. This characteristic provides new thoughts for target detection in infrared images.
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马宁,刘莎,李江勇.红外热像仪的空间噪声和时间噪声分析[J].激光与红外,2017,47(6):717~721 MA Ning, LIU Sha, LI Jiang-yong. Analysis on spatial noise and temporal noise of IR thermal imager[J]. LASER & INFRARED,2017,47(6):717~721