非制冷热瞄具图像实时开窗增强方法研究

Real-time Window Enhancement Method for Image of Uncooled Thermal Sight

针对红外观瞄系统图像增强技术的实时性问题,根据人们的视觉特性,提出非制冷热瞄具图像实时开窗增强方法。该方法首先在红外图像中取出适当大小的子图像,再用合适的增强算法来处理子图像,而子图像以外的区域不作任何处理。文中给出了硬件实现流程。最后证明开窗增强的方法减少了背景像素的处理时间,提高了图像处理的实时性,并且开窗增强不会对增强效果有不良影响,对小目标图像增强有不可替代的作用。

To realize the real-time problem of the image enhancement technology in the infrared thermal sight system, a window enhancement method was put forward according to the vision characteristic of human＇s eye. A proper size sub-image was first taken out of the whole infrared image and the sub-image was then processed with a certain enhancement algorithm, while pixels out of the sub-image were not processed. The hardware processing flow chart was given. It is proved from the analysis that the processing time of background pixels is saved with the window enhancement methodand real-time responsibility of image processing is improved. Moreover, this method does not damage the enhancement effect and it is especially useful in the scene with small object.