Patent ID: 7333631
Filing Date: 2008-02-19
Classification: G06K

Abstract:
1. A landmark disposed at a predetermined location within a work environment of an autonomous vehicle, the landmark comprising: a first outer line area having a rectangular shape, wherein the first outer line area in an image of the landmark acquired by a camera of the autonomous vehicle is used to ascertain X and Y axes of an image plane of the acquired image upon self-localization of the autonomous vehicle; a second outer line area located within the first outer line area of the landmark and having a circular shape with a predetermined radius, wherein the second outer line area in the acquired image of the landmark is analyzed to ascertain a deviation degree between the camera and the landmark upon acquisition of the image plane; and a shape area located within the second outer line area of the landmark comprising a predetermined unique shape that distinguishes the landmark from other landmarks disposed within the work environment, wherein the predetermined shape in the shape area in the acquired image of the landmark is analyzed to recognize which of the landmarks disposed within the work environment corresponds to the acquired landmark image.