多模自适应电子稳像算法研究

电子稳像算法的主要目的是解决摄像机随机运动导致的图像序列的帧间抖动问题。根据摄像机成像模型,推导了摄像机平移振动和旋转运动对图像运动的影响,阐明了电子稳像算法中各种图像运动模型的物理成因,指出了模型之间的内在联系。提出了一种多模自适应电子稳像算法,根据摄像机工作时图像序列抖动的剧烈程度,自适应地选择适当的图像运动模型和相应的运动估计方法。实验结果表明,该算法在各种情况下都能实现对图像序列的高精度稳定,有效地提高了电子稳像算法的适用性。

Research on self-adaptive multi-model electronic image stabilization algorithm

The major objective of the electronic image stabilization algorithm is to eliminate the flutter in the image sequences due to camera shakes. The relationship between image shaking and camera motion is deduced based imaging model. The physical cause of image transformation models is indicated. A self-adaptive multi-model electronic image stabilization algorithm is proposed, which can choose appropriate image transformation model and corresponding motion estimation method automatically, by computing the shaking amplitude of image sequences when camera is working. The experimental result shows that this algorithm can achieve high precision stabilization to image sequences and enhance the abilities of applicability and real-time of electronic image stabilization algorithm.