Considering that the present image mosaic methods are difficult to satisfy the requirement of real-time

a bionic compound eye visual system through simulating the functions of fly’s compound eye is designed.This system uses several CCD cameras to imitate the small eyes of fly’s compound eye

and a direct image mosaic method is put forward to synthesize the images obtained from different cameras to form an image of large field of view.Experiment result indicates that the consumed time of direct image mosaic method is only 2.6 % of traditional methods while keeping excellent image mosaic quality.It shows the direct method has a better real-time performance and is more efficient than the traditional methods.