just-noticeable difference

At last,the affection of every noise component,which can affect the MRTD,is discussed.

首先分析了一、二代热成像系统噪声的不同之处;然后就二代热成像系统分析了三维噪声模型,将系统噪声按时间、空间三维空间划分为7个噪声分量,就三维噪声模型的各个分量表现方式进行详细地分析,并给出实验结果;最后就三维噪声各分量对最小可分辨温差(MRTD)的影响进行了探讨。

Aiming at the method based on intelligent MRTD(Minimum Resolvable Temperature Difference) testing for thermal imaging system using ANN,the realized process,theory foundation,model of neural network and testing deviation were introduced briefly.

针对已提出的基于神经网络智能测量热成像系统最小可分辨温差(MRTD)的方法,简要阐述其实现方法、理论根据、神经网络算法模型以及测试结果分析。

A systematic and detailed comparison between two standards to characterize imaging IR system performance-minimum resolvable temperature difference/minimum resolvable contrast (MRTD/MRC) and triangle orientation discrimination threshold (TOD) is presented.

比较了表征光电成像系统性能的两种方法———最小可分辨温差法/最小可分辨对比度(MRTD/MRC)法与三角形方向辨别(TOD)法在测试样条、测量方法、适用范围、性能预测精度等方面的差别,分析了这些差别的产生机理,展望了TOD法在未来光电成像系统性能评估和测试领域的应用。

The history and achievements on the minimum resolvable temperature difference(MRTD) mathematical model are researched.

　通过研究热成像系统MRTD数学模型发展的历史及成果,推演和变换了最具代表性的10种最小可分辨温差方程,研究分析了各方程之间的内在联系和异同,从而在匹配滤波模型的基础上推导出新的MRTD方程。

According to the request of the technique, the main parameters of noise equivalent temperature difference and minimum resolvable temperature difference were analysed and calculated.

根据技术指标的要求,对噪声等效温差、最小可分辨温差等主要参数进行了详细的分析与计算,证明了红外热成像系统设计的合理性。