| 摘要 |
A motion-estimation scheme is provided that employs a combination of motion estimation and compensation techniques. Low resolution images are computed from two consecutive image frames, and feature points are determined and matched between the two low resolution images. Statistical methods are used to estimate the motion in terms of a translation and rotation of the image plane. Corresponding feature points in the original images are matched, based on the estimated motion of the low-resolution images. Statistical techniques are then applied to determine a homography matrix that describes the motion between the corresponding feature points in the original images, and this matrix is used to align the original images. Differences between the aligned images are identified, to indicate the movement of one or more objects in the image. |
