Patent KR-101359332-B1 (KR)
Title: Method of tracking and recognizing number plate for a crackdown on illegal parking/stop
Inventor: CHO TAE YA
IPC: G08G1/04
Filed: 2013-12-05
Granted: 2014-02-24
Abstract: The present invention includes the following steps of: scanning road clampdown areas at intervals of n seconds while generating a stop image by sequentially scanning n number of the road clampdown areas; detecting a vehicle license plate location and a vehicle number from the stop image which is generated by scanning sequentially; determining that the detected vehicle license plate location and the detected vehicle number are detected at a same location of a same road clampdown area at intervals of n seconds two or more times; determining the corresponding vehicle as a stopped vehicle in case of being detected two or more times at the intervals of n seconds; generating a situation image of the stopped vehicle while stopping a scanning and restarting the scanning; detecting a vehicle license plate location and a vehicle number from the generated situation image; determining whether 5 minutes elapsed from the generation time of an initial stop image or not; generating a stop image by photographing the road clampdown of the situation image by a magnifying photographing in case 5 minutes elapsed; generating a stop image while stopping a scanning and restarting the scanning; detecting a vehicle license plate location and a vehicle number in the stop image; determining whether the vehicle license plate location and the vehicle number in the stop image are same with the vehicle license plate location and the vehicle number in the situation image or not; and confirming a clampdown of the vehicle as a vehicle of illegal parking and stopping in case of the vehicle license plate location and the vehicle number in the stop image are same with the vehicle license plate location and the vehicle number in the situation image. [Reference numerals] (AA, DD, FF) Yes; (BB, CC, EE) No; (S101) Generate a stop image by sequentially scanning n number of road clampdown areas which comprise a long distance, a middle distance, and a short distance and scan a same road clampdown area at the interval of n seconds; (S102) Detect a vehicle license plate location/vehicle number from the stop image by scanning sequentially; (S103) Detect at the positions of road clampdown areas which have a same vehicle license plate location/vehicle number at the interval of n seconds two and more times; (S104) Determine a corresponding vehicle as a stop vehicle; (S105) Generate a situation image by amplifying and photographing the road clampdown area of a vehicle which is determined as the stop vehicle while stopping a scanning and restart a scanning; (S106) Detect a vehicle license plate location/vehicle number from the situation image; (S107) Determine whether 5 minutes elapse from the generation time of an initially detected stop image; (S108) Generate a stop image by amplifying and photographing the road clampdown area of the situation image; (S109) Generate a stop image by amplifying and photographing the road clampdown area while stopping a scanning and restart the scanning; (S110) Detect a vehicle license plate location/vehicle number from the stop image; (S111) Determine whether the vehicle license plate location/vehicle number which is detected from the stop image is same as the vehicle license plate location/vehicle number of the situation image or not; (S112) Confirm the corresponding vehicle as a 5 minutes illegal parking and stopping vehicle