Patent ID: 7460691

Claim:
A method of detecting a vehicle within a chevron area in a traffic monitoring system, the method comprising the steps of: applying a gray level co-occurrence matrix for the extraction of texture features of a region of interest; calculating two texture measurements using the gray level co-occurrence matrix, the two texture measurements comprising an angular second moment and a contrast; comparing the angular second moment ASM and the contrast CON, with a background angular second moment ASM B and a background contrast CON B , the background angular second moment and background contrast measured when no vehicle is present,); and determining if (|ASM B −ASM|>ASM TH -AND|CON B −CON|<+(CON Th ), wherein if (|ASM B −ASM|>ASM TH -AND |CON B −CON|<+(CON Th ), then a vehicle is not present.