JPH0322099A - Automatic recognizing device for number plate - Google Patents
Automatic recognizing device for number plateInfo
- Publication number
- JPH0322099A JPH0322099A JP15650989A JP15650989A JPH0322099A JP H0322099 A JPH0322099 A JP H0322099A JP 15650989 A JP15650989 A JP 15650989A JP 15650989 A JP15650989 A JP 15650989A JP H0322099 A JPH0322099 A JP H0322099A
- Authority
- JP
- Japan
- Prior art keywords
- vehicle
- number plate
- television camera
- shutter
- processor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 abstract description 10
- 230000006870 function Effects 0.000 abstract description 2
- 238000003384 imaging method Methods 0.000 description 9
- 238000012795 verification Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Landscapes
- Traffic Control Systems (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は走行車両をテレビカメラで撮像し,車両が検出
されたときにはその車両のナンバープレートを認識する
、ナンバープレート自動認識装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an automatic license plate recognition device that images a traveling vehicle with a television camera and recognizes the license plate of the vehicle when the vehicle is detected.
従来の技術
第2図は従来の自動車ナンバー自動認識装置の構戊を示
している。第2図において、11は車両を検出する位置
センサ、12はテレビカメラ及びストロボ装置より構或
される撮像装置、13は撮像装置に訃いて撮像された画
像を処理し、ナンバープレートを認識する認識装置、1
4は認識装置13の結果を手配車両リストと照らし合わ
せる照合装置、15は照合装置14の結果を警察官に伝
える警報表示装置である。BACKGROUND OF THE INVENTION FIG. 2 shows the structure of a conventional automatic vehicle number recognition device. In FIG. 2, 11 is a position sensor that detects a vehicle, 12 is an imaging device composed of a television camera and a strobe device, and 13 is a recognition device that processes the image taken by the imaging device and recognizes the license plate. device, 1
Reference numeral 4 denotes a verification device that compares the results of the recognition device 13 with the wanted vehicle list, and 15 represents an alarm display device that notifies the police officer of the results of the verification device 14.
次に上記従来の動作について説明する。第2図において
車両が進入すると、位置センサ11が感知信号を発生し
センサ信号処理部16を介して認識装置13に送信する
。認識装置13は感知信号を受けると、シャソタ指令及
びストロボ発光指令を撮像装置12に送信し、シャッタ
動作及びストロボ発光時の画像を静止画としてフレーム
メモリ内に格納する。このデータを処理しナンバープレ
ートの全文字を認識する。結果は照合装置4に送出され
、手配車両リストに存在したときは,車両の情報が警報
表示装置16に送られ、警察官に伝えられる。Next, the above conventional operation will be explained. In FIG. 2, when a vehicle enters the vehicle, the position sensor 11 generates a sensing signal and transmits it to the recognition device 13 via the sensor signal processing section 16. When the recognition device 13 receives the sensing signal, it transmits a shutter command and a strobe light emission command to the imaging device 12, and stores an image during shutter operation and strobe light emission in a frame memory as a still image. It processes this data and recognizes all the characters on the license plate. The results are sent to the collation device 4, and if the vehicle exists in the wanted vehicle list, the vehicle information is sent to the warning display device 16 and notified to the police officer.
このように、上記従来の自動車ナンバー自動認識システ
ムでも、上記システム構或によりナンバーを認識するこ
とができる。In this way, even with the above-mentioned conventional automatic vehicle number recognition system, the number can be recognized by the above-described system structure.
発明が解決しようとする課題
しかしながら、上記従来の自動車ナンバー自動認識シス
テムでは、車両検出用センサ及びテレビカメラを路上に
設置せねばならず、システムが大掛かりなものになって
し1い、さらに設置場所を不特定に移動できる可搬形シ
ステムへの応用も困難であるという問題があった。本発
明はこのような従来の問題を解決するものであり、車両
検出用として特殊なセンサを必要としない自動車ナンバ
ー自動認識装置を提供することを目的とするものである
。Problems to be Solved by the Invention However, in the conventional automatic vehicle number recognition system described above, vehicle detection sensors and television cameras must be installed on the road, making the system large-scale and requiring a large installation space. There was also the problem that it was difficult to apply it to a portable system that could be moved indefinitely. The present invention is intended to solve such conventional problems, and aims to provide an automatic vehicle number recognition device that does not require a special sensor for vehicle detection.
課題を解決するための手段
本発明は上記目的を達戒するために一車両検出用テレビ
カメラを設け、画像処理によって車両を検出し静止画撮
像を行うというものである。Means for Solving the Problems In order to achieve the above object, the present invention provides a television camera for vehicle detection, detects a vehicle through image processing, and captures a still image.
作 用
したがって,本発明によれば、テレビカメラ装置によっ
て車両を検出できるので、撮像装置と一体化を図れば車
両検出用の特殊なセンサを用いることな〈車両を検出す
ることができ、システムの簡略化が図れるという効果を
有する。Therefore, according to the present invention, since a vehicle can be detected by a television camera device, if it is integrated with an imaging device, it is possible to detect a vehicle without using a special sensor for detecting a vehicle, and the system can be improved. This has the effect of simplifying the process.
実施例
第1図は本発明の一実施例の構戊を示すものである。第
1図にふ・いて、1は車両検出用テレビカメラ及びスト
ロボ装置より構或される撮像装置,2は車両検出処理及
びナンバープレート認識処理をする処理装置、3は手配
車両照合装置、4は警報表示装置である。次に上記実施
例の動作について説明する。上記実施例において、撮像
装置1内の車両検出用テレビカメラの画像は常時処理装
置2のフレームメモリに取り込壕れ、画像処理される。Embodiment FIG. 1 shows the structure of an embodiment of the present invention. Referring to FIG. 1, 1 is an imaging device composed of a television camera and a strobe device for vehicle detection, 2 is a processing device that performs vehicle detection processing and license plate recognition processing, 3 is an arranged vehicle verification device, and 4 is an arrangement vehicle verification device. It is an alarm display device. Next, the operation of the above embodiment will be explained. In the embodiment described above, images from a vehicle detection television camera in the imaging device 1 are constantly captured in the frame memory of the processing device 2 and subjected to image processing.
車両が進入してくると、処理装置2は車両を検出し、シ
ャッタ指令及びストロボ発光指令を撮像装置1へ送出す
る。ナンバープレート認識用テレビカメラは、高解度及
び高速シャッタ機能を有してかり、シャッタ指令に同期
してシャッタ動作を行い,同時にストロボ発光を行う。When a vehicle approaches, the processing device 2 detects the vehicle and sends a shutter command and a strobe light emission command to the imaging device 1. A television camera for license plate recognition has a high-resolution and high-speed shutter function, performs a shutter operation in synchronization with a shutter command, and emits strobe light at the same time.
こうして撮像されたナンバープレート認識用の映像信号
は処理装置2内のフレームメモリに格納される。これを
処理することによう,ナンバーフレート内の全文字を認
識する。結果は、照合装置3にかいて手配車両リストと
の照合処理が行われ、リスト内に本認識車両が存在した
時には、警報表示装置4に手配車両情報を送信、警察官
に伝える。The image signal for license plate recognition thus captured is stored in a frame memory within the processing device 2. To handle this, all characters within the number plate are recognized. The result is checked against the wanted vehicle list in the matching device 3, and when the recognized vehicle is present in the list, the wanted vehicle information is transmitted to the alarm display device 4 and notified to the police officer.
このように、上記実施例によれば、車両検出用センサを
システム内に構戒することなく、撮像装置と処理装置を
使うことにより自動車のナンバープレートを認識するこ
とができる、という利点を.有する。これはシステムの
簡略化、さらには小型化により可搬形のシステムへ応用
できるという効果を有する。As described above, the above embodiment has the advantage that the license plate of a car can be recognized by using the imaging device and the processing device without installing a vehicle detection sensor in the system. have This has the effect of simplifying the system and further downsizing it so that it can be applied to a portable system.
発明の効果
本発明は上記実施例より明らかなように、車両検出用と
して特殊なセンサを必要としない,という利点を有する
。そして更に、システム全体の小型化を図ることにより
、可搬形システムへ応用できるという効果を有する。Effects of the Invention As is clear from the embodiments described above, the present invention has the advantage that a special sensor for vehicle detection is not required. Furthermore, by reducing the size of the entire system, it has the effect of being applicable to a portable system.
第1図は本発明の一実施例に釦ける自動車ナンバー自動
認識装置の概略ブロック図、第2図は従来の自動車ナン
バー自動認識装置の概略プロソク図である。
1・・・・・・撮像装置、2・・・・・・処理装置、3
・・・・・・照合装置。FIG. 1 is a schematic block diagram of an automatic vehicle number recognition device according to an embodiment of the present invention, and FIG. 2 is a schematic block diagram of a conventional vehicle number automatic recognition device. 1... Imaging device, 2... Processing device, 3
...Verification device.
Claims (1)
画像処理した信号から車両が検出できたときはその車両
のナンバープレートの文字を認識する処理装置を備えた
ナンバープレート自 動認識装置。[Claims] An automated license plate system comprising an image processing means for capturing an image of the road with a television camera, and a processing device that recognizes the characters on the license plate of the vehicle when a vehicle is detected from the image-processed signal. recognition device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15650989A JPH0322099A (en) | 1989-06-19 | 1989-06-19 | Automatic recognizing device for number plate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15650989A JPH0322099A (en) | 1989-06-19 | 1989-06-19 | Automatic recognizing device for number plate |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0322099A true JPH0322099A (en) | 1991-01-30 |
Family
ID=15629325
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15650989A Pending JPH0322099A (en) | 1989-06-19 | 1989-06-19 | Automatic recognizing device for number plate |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0322099A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05274590A (en) * | 1992-03-24 | 1993-10-22 | Nissin Electric Co Ltd | Measuring instrument and display device for the number of vehicles in tunnel |
US5809161A (en) * | 1992-03-20 | 1998-09-15 | Commonwealth Scientific And Industrial Research Organisation | Vehicle monitoring system |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5627497A (en) * | 1979-08-10 | 1981-03-17 | Mitsubishi Electric Corp | Vehicle inquiry device |
JPS6290800A (en) * | 1985-10-17 | 1987-04-25 | 財団法人 日本交通管理技術協会 | Automatic vehicle number reading system |
-
1989
- 1989-06-19 JP JP15650989A patent/JPH0322099A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5627497A (en) * | 1979-08-10 | 1981-03-17 | Mitsubishi Electric Corp | Vehicle inquiry device |
JPS6290800A (en) * | 1985-10-17 | 1987-04-25 | 財団法人 日本交通管理技術協会 | Automatic vehicle number reading system |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5809161A (en) * | 1992-03-20 | 1998-09-15 | Commonwealth Scientific And Industrial Research Organisation | Vehicle monitoring system |
JPH05274590A (en) * | 1992-03-24 | 1993-10-22 | Nissin Electric Co Ltd | Measuring instrument and display device for the number of vehicles in tunnel |
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