Patent ID: 8244403

Claim:
A visual navigation system based on structured light, comprising: a projector constructed in an environment and external to the robot for projecting the structured light into a navigation space from outside the navigation space to form a specific path pattern; an image capture device, constructed in the environment, for capturing an image in the navigation space, wherein the image capture device is not located in the navigation space; a robot, moving along the specific path pattern; and a visual server, for receiving the image in the navigation space transmitted by the image capture device, so as to identify the position of the robot in the image, confirming a position of an obstacle from a distorted portion of the specific path pattern in the image, and routing a virtual path beginning and ending at the specific path and neighbouring the obstacle; wherein when the robot moves along the specific path pattern and reaches a place neighbouring the obstacle, the visual server issues a navigation instruction to the robot to make the robot follow the virtual path, and after the robot's moving along the virtual path is finished, the visual server issues a navigation instruction to the robot to make the robot continue moving along the specific path pattern.