红外偏振成像下的弱小目标检测

Detection of Dim Target with Infrared Polarization Imaging

为了验证红外偏振成像在海杂波中检测弱小目标的可行性,开展了海背景下的红外偏振成像实验。使用未装偏振片和加装偏振片的红外热像仪对海杂波背景下的弱小目标进行了探测,同时采集了相应状态下的数据。为了验证偏振片对海杂波的抑制效果,对采集的数据进行了图像处理。从没有加装偏振片的红外热像仪数据中无法提取测试目标,而从加装偏振片后的红外图像数据中通过图像增强、中值滤波以及边缘检测的图像处理手段提取出了测试目标。

To verify the feasibility of detecting small targets in sea clutter with infrared polarization imaging,experiments are carried out on infrared polarization imaging against the sea background.Both an infrared thermal imager with a polarizer and one without a polarizer are used to detect the dim target against the sea clutter background.At the same time,the data under the corresponding condition are collected.To verify the effectiveness of the polarizer in the inhibition of sea clutter,imaging processing is performed for the collected data.The target is not extracted from the data collected by the infrared thermal imager without a polarizer.However,the target is extracted from the data collected by the thermal imager with a polarizer through image enhancement,median filtering and edge detection.