CN200976204Y

CN200976204Y - License plate positioning recognition, vehicle tag positioning recognition and vehicle shaped recognition device

Info

Publication number: CN200976204Y
Application number: CN 200620010144
Authority: CN
Inventors: 王枚; 潘国华
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-09-20
Filing date: 2006-09-20
Publication date: 2007-11-14
Anticipated expiration: 2016-09-20

Abstract

The utility model discloses a device having the ability of position and recognition of a vehicle license plate, position and recognition of a vehicle logo and vehicle recognition. The utility model comprises an image device (1) and a triggering device (2), which is characterized in that the image device is connected with an industrial computer (3) through a data acquisition interface, the industrial computer (3) is connected with a computer of security checkpoint workstation (4) by a communication cable, the computer of security checkpoint workstation (4) is connected with a terminal server (5) via the communication cable, the terminal server (5) is connected with a local optical terminal (6) via a cable, the local optical terminal (6) is connected with a parent optical terminal (7) by a fiber, the parent optical terminal (7) is connected with a main server (8) by the fiber, the main server (8) is connected with a database terminal of vehicle information (9), and the computer of security of checkpoint workstation (4) is connected with an alarm switch (10) through the line. The utility model has the advantages of high accuracy of recognition, adaptable environment changes, and suitable for a monitoring management system of traffic block port, an intelligent transportation system, a freeway toll system, a management system of large parking lots, etc.

Description

The location identification of a kind of car plate, car are demarcated the device of position identification and vehicle identification

Technical field:

The utility model relates to the vehicle recongnition technique field, is a kind of device that carries out the identification of car plate location, car demarcation position identification and vehicle identification from the headstock image specifically.

Background technology:

Along with developing rapidly of Chinese national economy, motor vehicles scale and flow increase considerably, and national motor vehicle amount increases more than 15% every year, thereby relate to car incident, how much multiples growths of case one-tenth, punish severely the person and the property safety that are endangering people, cause tremendous loss to country.The nineties in 20th century, people have carried out the research of vehicle identification system in succession, beginning 21 century, research and development license plate Computer Automatic Recognition technology for many years occurs, and applied rapidly, be widely used in making a dash across the red light, bayonet socket, charge station, move aspects such as incident that inspection, hourage statistics etc. relates to car, case, violation and investigate.But along with constantly widening of application surface, various " antitracking " means also occur in succession, as arbitrarily blocking, alter car plate, " remote control card-turner ", removing automotive license plate etc., make troubles for license plate Computer Automatic Recognition technology, people were through research for many years afterwards, infrared, laser, ultrasonic, microwave detection, linearity, nonlinear strain sensor have appearred, the fuzzy diagnosis of image, figure, the perhaps combination of several method, but can only discern car plate and large-scale, medium-sized, dilly, but can not discern the concrete vehicle of vehicle.

Summary of the invention:

Order of the present utility model is the deficiency that overcomes above-mentioned prior art, and the device that provides the identification of a kind of car plate location, car to demarcate position identification and vehicle identification, has mainly solved the problem that prior art can not be discerned the details such as concrete vehicle of vehicle.

In order to achieve the above object, the utility model is achieved in that the location identification of a kind of car plate, car is demarcated the device of position identification and vehicle identification, it comprises camera head 1, flip flop equipment 2, its special character is that camera head 1 is connected with industrial computer 3 by data acquisition interface, industrial computer 3 is connected with public security bayonet socket workstation computer 4 by communication cable, bayonet socket workstation computer 4 is connected with terminal server 5 by communication cable, terminal server 5 and local fiber optic 6 are connected by cable, local fiber optic 6 is connected with other end higher level fiber optic 7 by optical fiber, higher level's fiber optic 7 is connected with master server 8 by optical fiber, and master server 8 links with various types of vehicles information database terminal 9; Public security bayonet socket workstation computer 4 is connected with alarm switch 10 by circuit.

Car plate of the present utility model location identification, car are demarcated the device of position identification and vehicle identification, and its described camera head 1 is video camera and ball machine, and video camera is used to extract the headstock image and positions identification; The ball machine is used to extract the vehicle panorama sketch; Described flip flop equipment 2 is a ground induction coil, also can be the other types sensor.

Car plate of the present utility model location identification, car are demarcated the device of an identification and vehicle identification, and its described industrial computer 3 adopts embedded technology, has preset the method that the car plate location is discerned, car is demarcated position identification and vehicle identification.

The utility model is the location identification of a kind of car plate, car is demarcated the device of position identification and vehicle identification, it is by video camera the vehicle headstock image to be extracted in the track, the headstock image of capturing is transferred to industrial computer successively, in industrial computer, utilize computing machine to adopt the HSV spatial information to extract the car plate color region in conjunction with people's visual characteristic, utilize association and complementary characteristic to remove other zone, utilize probability and related function location license plate area, seriously lose the color value to fading, can utilize edge extracting method to position, the line tilt correction of going forward side by side, Character segmentation identifies the number-plate number; Utilize the position relation (general car mark is in the centre of car plate top) of car mark and car plate, navigate to the car mark according to the vertical and horizontal edge information of extracting, cut out the car picture of marking on a map, utilize 4 point of contacts of rectangle and inner ellipse and elliptical center point totally 5 points, carry out car and mark on a map, go into the standard vehicle mark base, utilize minimum distance method to compare as the registration normalized, determine the big class of vehicle, as popular series; Utilize marginal information to extract the feature in grid around the car mark (laterally, vertical or other shape) and car light district, utilize discrete KL conversion to compare, in fixed big class, find corresponding group, as the POLO of popular series; License board information, type of vehicle information input background data base are compared, make differential responses according to Different Results.

Car plate of the present utility model location identification, car is demarcated the device of position identification and vehicle identification, described association is according to the existing standard of China with complementation, the car plate color can be divided into 4 classes, wrongly written or mispronounced character of the blue end, yellow end surplus, white gravoply, with black engraved characters or The Scarlet Letter, the black matrix wrongly written or mispronounced character, be that the car plate district has such feature, blue and white, yellow and black, black is to exist together with white or redness, be the association feature of license plate area, and have only these several colors to exist at license plate area, the name color region is mutual saltus step, be that background color district and character color district are either-or, and every kind of colored pixels sum of counting out is occupied certain proportion in whole license plate area, and the probability sum is 1.Be defined as the complementary characteristic of license plate area.

Compared with the prior art the device that a kind of car plate described in the utility model location identification, car are demarcated position identification and vehicle identification has following good effect, and 1, adopt association and complementary characteristics to carry out the identification of car plate location, location identification is more accurate, convenient; 2, utilize the position relation of car mark and car plate,, can carry out the identification of car target location in conjunction with vertical edge information; 3, utilize marginal information to extract car mark grid and car light district feature on every side, compare, can carry out vehicle identification, thereby obtain concrete type of vehicle information in conjunction with discrete KL conversion; 4, can adapt to various environmental changes.

Description of drawings:

Fig. 1---structural representation of the present utility model;

Fig. 2---user mode synoptic diagram of the present utility model.

Embodiment:

In order to understand better and to implement, provide specific embodiment below in conjunction with accompanying drawing, a kind of car plate of detailed description the utility model is located identification, car is demarcated the device that the position is discerned and vehicle is discerned.

Embodiment 1, referring to Fig. 1,2, camera head 1 is installed in toll station exit position, camera head 1 can be video camera (taking the headstock image) and ball machine (taking the vehicle panorama sketch), guarantee that vehicular traffic can obtain headstock part image clearly, finish by light filling equipment is auxiliary when light is bad, the underground installation flip flop equipment 2 in track at the charge exit, flip flop equipment 2 can be ground induction coil and also can be the other types sensor, when headstock triggers ground induction coil first, video camera 1 is prepared to take, when triggering ground induction coil once more, video camera 1 is captured the headstock part image immediately, and video camera 1 is connected with industrial computer 3 by data acquisition interface, industrial computer 3 receives video camera and captures the headstock part image, utilize the HSV spatial information to extract the car plate color region, utilize association and complementary characteristic to remove other zone, utilize probability and related function location license plate area, the line tilt correction of going forward side by side, Character segmentation identifies the number-plate number; Utilize the position relation of car mark and car plate, arrive the car mark according to marginal information of extracting and location positioning, cut out the car picture of marking on a map, utilize 4 point of contacts of rectangle and inner ellipse and elliptical center point totally 5 points, carrying out car marks on a map as the registration normalized, go into the standard vehicle mark base, utilize minimum pairing comparision to compare, determine the big class of vehicle, utilize marginal information to extract the decorative pattern around the car mark and the feature in car light district simultaneously, utilize discrete KL conversion to compare, in fixed big class, find corresponding group; Industrial computer 3 is connected with bayonet socket workstation computer 4 by cable, industrial computer 3 adopts embedded technology, preset the identification of car plate location, car is demarcated the method for position identification and vehicle identification, the characteristic that industrial computer 3 is handled uploads to terminal server 5, terminal server 5 is connected with fiber optic 6 by cable uploads data, fiber optic 6 is connected with other end higher level fiber optic 7, finish uploading of data, higher level's fiber optic 7 and master server 8 are connected by optical fiber, master server 8 links with various types of vehicles database terminal 9, with the license board information of headstock part image through drawing after discerning, type of vehicle information input background data base terminal 9 is compared; Master server 8 is connected with public security bayonet socket workstation computer 4 under the terminal server 5 by cable by higher level's fiber optic 7 and local fiber optic 6 according to comparison result, and computing machine 4 is connected with alarm button 10 by circuit; After master server 8 and background data base terminal 9 are compared, make a response, and give public security bayonet socket workstation computer 4 as required, connect alarm switch 10 when needing information transmission.

Embodiment 2, with embodiment 1, difference is that camera head 1 is installed on the common road, flip flop equipment 2 is installed simultaneously, and connect other parts, a camera head 1 can be installed on each track, simultaneously a camera head 1 be installed on the center line in two adjacent tracks again, guarantee to obtain the headstock image of complete vehicular traffic.

The utility model is that the location identification of a kind of car plate, car are demarcated the device of position identification and vehicle identification, it is by video camera the vehicle headstock image to be extracted in the track, utilize its color space characteristic and spatial information feature to carry out the license plate area location, utilize car plate and car mark topological structure relation to navigate to the car mark and in the standard vehicle mark base, carry out car and identify not, find the big class of corresponding type of vehicle, extract again the grid of a car mark left side or dextrad and in the same way the car light area image judge, in the selected big class of car mark, judge the particular type of vehicle under it.

Claims

1, the location identification of a kind of car plate, car is demarcated the device of position identification and vehicle identification, it comprises camera head (1), flip flop equipment (2), it is characterized in that camera head (1) is connected with industrial computer (3) by data acquisition interface, industrial computer (3) is connected with public security bayonet socket workstation computer (4) by communication cable, bayonet socket workstation computer (4) is connected with terminal server (5) by communication cable, terminal server (5) is connected by cable with local fiber optic (6), local fiber optic (6) is connected with other end higher level fiber optic (7) by optical fiber, higher level's fiber optic (7) is connected with master server (8) by optical fiber, and master server (8) links with various types of vehicles information database terminal (9); Public security bayonet socket workstation computer (4) is connected with alarm switch (10) by circuit.

2, car plate location identification according to claim 1, car are demarcated the device of position identification and vehicle identification, it is characterized in that described camera head (1) is video camera and ball machine.

3, car plate location identification according to claim 1, car are demarcated the device of position identification and vehicle identification, it is characterized in that described flip flop equipment (2) is a ground induction coil.