基于红外-可见光双波段的扫描型宽视场成像方法研究

Research on scanning wide-field imaging method based on infrared and visible wavelengths

摘要:

针对目前红外成像设备中可见光与红外波段成像分辨率低，视场小以及图像位置映射关系不一致等问题，提出一种基于红外-可见光双波段的扫描型宽视场成像方法。该方法首先使用阵列传感器采集物体的可见光波段图像，使用单元红外探测器感应目标的红外热辐射，并通过电机驱动，以线扫描方式实现红外波段成像；然后根据可见光像素均匀分布与红外像素等角度分布的特点，在像素世界坐标系上实现正圆切割映射；最后利用扫描角度温度模型对红外图像进行温度补偿。实验结果表明：该方法可以有效同步的采集可见光与红外波段图像，使可见光与红外图像在长、宽视场角度上具有1:1的映射比，对红外与可见光双波段成像推广应用具有参考意义。

Abstract:

To address the issues of low resolution, narrow field of view, and inconsistent image mapping between visible light and infrared bands in current infrared imaging devices, a scanning-based wide field imaging method using infrared-visible dual-band is proposed. This method first uses an array sensor to capture visible light images of the object, then employs a single infrared detector to sense the infrared thermal radiation of the target, achieving infrared imaging through line scanning driven by a motor. Then, based on the characteristics of uniform visible light pixel distribution and equiangular infrared pixel distribution, a circular cut mapping is achieved in the pixel world coordinate system. Finally, a temperature compensation is applied to the infrared image using a scanning angle temperature model. Experimental results show that this method can effectively synchronize the capture of visible and infrared images, achieving a 1:1 mapping ratio in both width and field of view. This provides a reference for the broader application of dual-band imaging in infrared and visible light.