METHOD AND DEVICE FOR AUTOMATICALLY RECOGNIZING ROAD SIGN OF VIDEO PICTURE AND STORAGE MEDIUM STORING PROGRAM FOR AUTOMATICALLY RECOGNIZING ROAD SIGN

摘要

PROBLEM TO BE SOLVED: To provide a method and device for extracting and recognizing a road sign in real time from a picture photographed by a video camera loaded on a vehicle. ;SOLUTION: In a method for automatically recognizing a road sign, a special slit fi is set in a video picture displayed on a screen 13, and the presence or absence of a road signal is detected by a road sign probability calculation processing part 20 from the color components of picture data on the slit from an HSV conversion processing part 16, and when it is judged that any road signal exists on the slit, a detection area of a prescribed size is set in the range where it is judged that the road sign exists on the slit by a detection area setting processing part 19, and the contour ri of the road signal extracted by binarization is extracted by an contour detection processing part 24, and the type of the road sign is decided from the contour Ri of the road sign by a shape decision processing part 25, and a sign which is the closest to the features of the picture image of the road sign in the area within the decided types is extracted by a sign recognition processing part 26, and recognized as a road sign detected by a video camera 1.;COPYRIGHT: (C)2000,JPO