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根据红外热成像系统前置栅网的衍射效应,分析其应用于点目标探测领域的可行性;提出了一种基于前置栅网滤波的红外点目标探测方法,详细介绍了算法处理流程,该算法通过背景抑制、图像分割、图形匹配有效地实现了对前置栅网滤波后的点目标像探测;最后,将其与传统的TBD探测方法进行比较。实验结果表明:该方法由于使点目标实现了特定形状的扩展,能更好地区分真实目标和噪声,同时降低算法复杂度,能够实现实时处理,具有很好的应用前景。
According to the diffraction effect of the front grid of the infrared thermal imaging system, the feasibility of its application in the field of point-target detection is analyzed. A detection method of the infrared point target based on the front-grid filtering is proposed. The algorithm processing flow is described in detail. The algorithm achieves the point target image detection by the pre-grid filtering effectively through the background suppression, image segmentation and pattern matching. Finally, this method is compared with the traditional TBD detection method. The experimental results show that this method can be used in real-time processing due to the extension of the point target to a specific shape, the better distinction between the real target and the noise, the reduction of the complexity of the algorithm and the real-time processing.