摘要
文中讨论了飞机热图像动态范围和量化问题。发现：飞机热图动态范围很大，而目前所用8bits量化器无法与探测器动态范围相匹配，因而引起热图质呈下降，降低了辐射强度计算精度。因此提高量化级数，采用非均匀量化，可以明显改善热图质量，显著提高辐射强度计算精度。计算机仿真结果证实了这一观点的正确性。
Dynamic range and digitalization of thermal image of an aircraft are dis-cussed in detail. It is found out that the dynamic range of thermal image of an aircraft is so wide that the digitalizers being used can not match the dynamic range of the detector, which degrades the quality of thermal image. There fore, increasing the levels of digital-ization and applying the uneven digitalization can improve both the thermal image quali-ty and the calculation precision of radiant intensity. The conclusion is proved by the re-sults of computer simulation.
出处
《红外与激光工程》
EI
CSCD
1997年第4期16-19,共4页
Infrared and Laser Engineering
关键词
热图量化误差
量化器
飞机
辐射强度
红外探测器
Thermal image digitalization
Digitalization error
Uneven digitalization
Radiant intensity
