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在热成像系统中 ,存在信号源动态范围大 ,而显示输出动态范围小的矛盾。解决此问题的办法 :一是使用自动增益和偏移实现人机分离 ;二是使用信号压缩 ,保证最大限度地显示所需信息。在介绍了I类 32元和II类SPRITE组件热像仪的大动态范围下热像显示的基础上 ,提出了高位采样直方图压缩的方法。通过对这几种方法的分析比较 ,认为第一种方法面对图像且计算量大 ;而文中的方法面对目标且具有较宽的动态范围 ,如果需要对目标作进一步增强处理时 ,计算量也相对较小。
In a thermal imaging system, there is a large dynamic range of the signal source and a small contradiction in the dynamic range of the output. To solve this problem: First, the use of automatic gain and offset to achieve human-computer separation; the second is the use of signal compression, to ensure maximum display of the required information. Based on the introduction of the thermography display under the large dynamic range of Class I 32 yuan and Class II SPRITE components, a method of high bit-sampling histogram compression is proposed. By analyzing and comparing these methods, the first method is considered to face the image and has a large amount of computation. However, the method in the paper faces the target and has a wide dynamic range. If the target needs to be further enhanced, the computational cost It is also relatively small.