中值滤波在红外成像引信中的应用及硬件实现

Application of Median Filter in Infrared Imaging Fuze and Its Hardware Realization

文中研究了在成像引信中应用中值滤波作为一种非线性的图像处理方法及其实现技术。通过运算、试验证明中值滤波在抑制成像引信扫描图像噪声、克服探测元失效方面起着良好的作用。本文提出了一种逻辑选通模块用于硬件实现元素个数较少的中值滤波,不同于常用实现中值滤波的排序网络,其具有更好的并行性且能够降低硬件资源消耗,通过FPGA实现后取得了良好的效果。

Median filter and its hardware realization are discussed in this paper as a non-linear image processing method used in imaging fuze.With the calculation and the experiments we proved that median filter has operated well in noise suppression of scanning images and overwhelming failure of detecting element. In this paper, a logic strobing model has been proposed to realize the median filter with small number of elements in hardware. Unlike the usual sorting network of median filter realization,the logic strobing model has better parallelism and can effectively reduce the cost of hardware resource. When realized in FPGA,it gets the good effect.