New multimodal image registration method based on moving targets' trajectory

For the dual band IR imaging system to track targets in the air, due to the uniform sky background, it is difficult to extract salient features besides the tracked targets. But in the dual band IR image sequence, the target in the air has the same trajectory. So the trajectory can be used as feature to register dual-band IR images. If the target trajectory is uniform, the accuracy of double wave band image registration method based on moving targets’ track will be greatly reduced. In addition to detect the target trajectory, it is necessary to detect other feature points in the background, such as the corners. Therefore, in this paper we first detect the target trajectory in the middle-wave infrared image sequence and long-wave infrared image sequence. Then combined the corners in dual band images, dual-band images are registered. Experimental results shows the effectiveness of this method.