Abstract: A novel method of image motion detection is presented for airborne vision stable system in this paper. The image motion is obtained by the gray project and then the motion data is accurately detected by the grid detection and bit plane match method. With auto-fit gray divided level selection and gray project,the calculation amount can be greatly reduced. The experiments show that the method has good perform in real time and image adaptability.

Key words: gray project, bit plane match, vision stable system, motion detection