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Spacial discrimination is a method to discriminate the required target from the complex background by the use of the characteristic difference of dimension between the point target and the background of large area. In this article, we try to apply synthetically several methods of spacial discrimination to improve detecting trackera, which are now in use. By means of them, we may raise the power of filting the background, increase the faculty of detecting tracks and improve the quality of images。Thus, it has... Spacial discrimination is a method to discriminate the required target from the complex background by the use of the characteristic difference of dimension between the point target and the background of large area. In this article, we try to apply synthetically several methods of spacial discrimination to improve detecting trackera, which are now in use. By means of them, we may raise the power of filting the background, increase the faculty of detecting tracks and improve the quality of images。Thus, it has found many important applications。 空间鉴别是利用点源目标和大面积背景之间尺寸方面的特性差别,从复杂背景中鉴别出所需要的目标的一种方法。本文提出综合利用空间鉴别的几种方法,改进现有的红外探测跟踪系统,提高背景滤除能力,增加系统探测跟踪能力,改善图象质量,因而具有广泛的用途。 This article describes a method of pseudo-color enhancement of aerial infrared thermography. A continuous grey tone thermographic picture has been encoded into a pseudo-color image by means of the technique of half-tone screens preprocessing and spatial filtering. Our results have been compared with the results obtained by digital method, and the discussion of the comparison is given. 本文叙述了航空热红外图象的假彩色增强方法。借助于半色调屏预处理与空间滤波技术,把一张连续色调的热红外图象编码成假彩色图象。将我们所得的结果与电子计算机得到的结果进行了比较和讨论。 A concept of optimum broken lines in linearization is described and an appropriate calculating method for determining the optimum broken lines is thus derived. The author has used this method to design the linearization device for type WFH-60 infrared radiation pyrometer. The characteristic curve, the original non-linearity of which was about 42%, has been linerarized with a linearity error not exceeding ±0.5%. 本文提出了线性化中最佳折线的概念,推导出一种合理确定线性化中最佳折线的计算方法。笔者曾用此法设计制作了WFH-60型红外辐射温度计的线性化器。将非线性度约42%的曲线进行线性化,其线性化精度可达±0.5%。用线性化器进行非线性校正时,线性化器的输入-输出特性曲线应是被校曲线的反函数。工程上可采用折线近似法,使线性化器产生一条近似于被校曲线反函数的折线(图1)。由折线近似法引入的误差体现在线性化精度这一指标上,它的大小取决于被校曲线的非线性度和线性化器所产生的折线。被校曲线往往不易更改,所以提高线性化精度的关键在于折线的选择。
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