摘要
图像退化是图像恢复和重建的基础,根据热像仪成像系统的各构成环节(光学系统、探测器、电子线路),针对基于热像仪调制传递函数(MTF)的建模仿真方法对红外图像的空间分辨率退化模型进行研究。将利用MTF数学模型计算出的参数和实验室实测参数进行了对比分析,并利用实测数据进行了一维和二维FIR滤波器的设计从而实现了基于MATLAB的热像仪空间分辨率特性仿真。最后,使用一副仿真标准四杆靶标的一般灰度图像作为标准输入,验证了所设计滤波器对实际热像仪空间分辨率特性的逼近程度。
Image degradation is the basis of image restoration and reconstruction, according to the various departments of thermal imaging system （optical system, detector and electronic circuit）, the paper researches the spatial resolution deg- radation model of infrared image based on the modulation transfer function （MTF） of thermal imager. The paper com- pares the parameters computed by MTF mathematical model to laboratory test parameters for the comparison and analy- sis, and using the measured data for the two kinds of FIR filter design, so as to realize the spatial resolution characteristic simulation based on MATLAB. In the end, it make the gray image of a standard four bar targets as a standard input, verify by the approximation to the characteristics of the actual infrared camera spatial resolution.
出处
《国外电子测量技术》
2014年第9期21-27,共7页
Foreign Electronic Measurement Technology
关键词
图像退化
仿真
空间分辨率
红外热成像系统
image degradation
simulation
spatial resolution
thermal imager system
