New Electronic Digital Image Stabilization Algorithm in Wavelet Transform Domain

In this paper, we presented a new wavelet-based digital image stabilization (DIS) algorithm on the motion estimation for the stabilization of the 2-axes rotation sight system. In proposed algorithm, we first estimate the local motion defined in terms of translational motion vector by using fine-to-coarse (FtC) multi-resolution motion estimation (MRME). Next, we estimate the global motion defined as the rotational motion parameters such as the rotational center and angular frequency by using the vertical and horizontal component in wavelet domain. The rotational center and angular frequency are estimated from the local motion field and the special subset of the motion vector respectively. The experimental results show the improved stabilization performance compared with the conventional digital image stabilization algorithm.