关键词: 灰度投影, 对数极坐标, 笛卡儿坐标系, 旋转变换, 稳像

Abstract: Traditional gray projection image stabilizing algorithm just works under horizontal and vertical movement; but it is unable to deal with either scaling or rotation of the matched images. Due to the limitation, a gray projection image stabilizing algorithm based on log-polar image transform was introduced. When log-polar image transform was used in scaling or rotation image, the scaling or rotation movement in Descartes reference frame was represented by horizontal and vertical movement in log-polar reference frame. Accordingly, gray projection algorithm could be used in scaling or rotation image.

Key words: gray projection algorithm, log-polar reference frame, Descartes reference frame, rotation transform, image stabilization