红外动态场景图像质量评价理论概述

Theoretical summarization model for the image quality evaluation of dynamic infrared scene

红外动态场景生成器是红外成像制导半实物仿真系统中的关键设备,红外动态场景生成器所产生红外图像的质量直接关系到仿真系统实验的质量。随着红外动态场景生成技术的发展,需要对产生的红外场景的质量进行全面评价。针对各种类型的红外动态场景生成器的性能进行分析,建立红外动态场景图像质量测试评价理论模型。该模型中主要的测试指标包括时间特性、空间分辨率、空间均匀性、几何畸变、动态范围、最大辐射功率密度、最小可分辨温差、串扰和辐射对比度等。通过对这些指标的测试,可以完整地描述出红外动态场景生成器的性能。

Dynamic infrared scene generator is the ware-in-the-loop （HWIL） simulation system. The key equipment of infrared imaging guidance hardimage quality of the infrared scene produced by dynamic infrared scene generator is directly related to the test quality of simulation system. With the development of the dynamic infrared scene generation technology, the quality of the generated infrared image should be evaluated roundly. The performance of various types of dynamic infrared scene generators were analyzed, and then the image quality test and evaluation models of dynamic infrared scene were established. The main test specifications include time characteristics, spatial resolution, spatial uniformity, geometric distortion, dynamic range, maximum radiated power density, minimum resolvable temperature difference, crosstalk and radiation contrast. By testing, the dynamic performance of infrared scene generator can be described completely.