JPH05137142A - Monitor using television camera - Google Patents

Monitor using television camera

Info

Publication number
JPH05137142A
JPH05137142A JP30061991A JP30061991A JPH05137142A JP H05137142 A JPH05137142 A JP H05137142A JP 30061991 A JP30061991 A JP 30061991A JP 30061991 A JP30061991 A JP 30061991A JP H05137142 A JPH05137142 A JP H05137142A
Authority
JP
Japan
Prior art keywords
television camera
image
color
signal
crane
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
Application number
JP30061991A
Other languages
Japanese (ja)
Inventor
Kenichi Tanaka
健一 田中
Eiji Noguchi
榮次 野口
Ichiro Akasaka
一郎 赤坂
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kansai Electric Power Co Inc
Sumitomo Densetsu Co Ltd
Original Assignee
Kansai Electric Power Co Inc
Sumitomo Densetsu Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kansai Electric Power Co Inc, Sumitomo Densetsu Co Ltd filed Critical Kansai Electric Power Co Inc
Priority to JP30061991A priority Critical patent/JPH05137142A/en
Publication of JPH05137142A publication Critical patent/JPH05137142A/en
Pending legal-status Critical Current

Links

Landscapes

  • Length Measuring Devices By Optical Means (AREA)
  • Closed-Circuit Television Systems (AREA)

Abstract

PURPOSE:To prevent an erroneous decision from being executed even if a cloud and a bird, etc., enter into a visual field of a television camera, at the time of monitoring automatically so that a machine such as a crane, etc., does not intrude into a work range exceeding a prescribed value, when the machine is operating in the vicinity of a transmission line. CONSTITUTION:Plural sets of television cameras 5, 6 are installed, photograph the same target (for instance, a crane 2) from different angles, respectively, and based on an image signal of each television camera 5, 6, each discriminating signal outputted from an image analyzing device 7 is outputted through an AND circuit 12.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は、目標物が一定の範囲
に入るか否かをテレビカメラと画像解析装置を用いて監
視する装置に関し、例えば送電中の送電線の付近でクレ
ーンが稼動している場合に、そのクレーンが送電線に一
定以上近づかないようこれを監視する場合に用いられ
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for monitoring whether a target object is within a certain range by using a television camera and an image analysis device. For example, a crane operates near a power transmission line during power transmission. When the crane is moving, it is used to monitor the crane so that it does not approach the transmission line more than a certain amount.

【0002】[0002]

【従来の技術】目標物が一定範囲に入るか否かをテレビ
カメラと画像解析装置を用いて監視する方法として、こ
の出願人の一人は、延線作業中の送電線の弛度を監視す
る装置を先に特許出願している(特開平2−12220
7号公報参照)。
2. Description of the Related Art As a method of monitoring whether or not a target object falls within a certain range by using a television camera and an image analysis device, one of the applicants monitors the sag of a power transmission line during wire drawing work. The patent application for the device was filed first (Japanese Patent Laid-Open No. 12220/1990).
(See Japanese Patent Publication No. 7).

【0003】上記の装置は、1台のテレビカメラで送電
線を撮影し、その送電線の画像と所定のウインドウとの
位置関係により弛度の大きさを観測するようにしてい
た。
In the above apparatus, one television camera photographs the power transmission line, and the degree of sag is observed by the positional relationship between the image of the power transmission line and a predetermined window.

【0004】一方、送電中の送電線の直下でクレーン等
の背の高い機械を用いた工事が行われることがあると、
そのクレーン等が送電線に一定以上近付かないよう作業
員が目視で監視し、クレーン等の運転者に警報を与える
必要がある。
On the other hand, when work using a tall machine such as a crane is carried out immediately below the power transmission line during power transmission,
It is necessary for an operator to visually check that the crane, etc. does not approach the power transmission line for a certain amount of time, and to give an alarm to the operator of the crane, etc.

【0005】このような場合に、前述の弛度観測の場合
と同様に、テレビカメラと画像解析装置を用いて、クレ
ーン等の上端がウインドウ内に入った場合に自動的に警
報を発するようにすれば、作業員の監視によることなく
自動的に監視することが一応可能となる。
In such a case, as in the case of the sag observation described above, a TV camera and an image analysis device are used to automatically issue an alarm when the upper end of a crane or the like enters the window. If so, it becomes possible to monitor automatically for some time without being monitored by workers.

【0006】[0006]

【発明が解決しようとする課題】しかし、上述の監視方
法は、屋外において実施されるため、テレビカメラの視
野には、目標物以外に雲や鳥などが入ることがある。こ
れらのものがウインドウ内に入ると画像解析装置は目標
物がウインドウに入った場合と同様の判定を行なうた
め、誤判定の原因となる問題がある。
However, since the above-described monitoring method is carried out outdoors, clouds or birds may enter the field of view of the television camera in addition to the target. When these objects enter the window, the image analysis apparatus makes the same judgment as when the target object enters the window, which causes a problem of erroneous judgment.

【0007】そこで、この発明は目標物以外のものがテ
レビカメラの視野に入ったとしても誤判定となることを
避けることができる監視装置を提供することを課題とす
る。
[0007] Therefore, an object of the present invention is to provide a monitoring device which can prevent an erroneous determination even if an object other than the target object enters the field of view of the television camera.

【0008】[0008]

【課題を解決するための手段】上記の課題を解決するた
めの第1の手段は、目標物を撮影するテレビカメラと、
そのテレビカメラから出力される画像信号にウインドウ
を重畳せしめると共にそのウインドウと上記目標物の画
像との位置関係に基づく判別信号を出力する画像解析装
置とから成るテレビカメラを用いた監視装置において、
上記のテレビカメラを複数台設置し、それぞれ同一目標
物を異なった角度から撮影し、各テレビカメラの画像信
号に基づき画像処理装置から出力される各判別信号をA
ND回路を経て出力するようにした構成としたものであ
る。
[Means for Solving the Problems] A first means for solving the above problems is a television camera for photographing a target object,
In a monitoring device using a television camera, which is composed of an image analysis device which superimposes a window on an image signal output from the television camera and which outputs a discrimination signal based on the positional relationship between the window and the image of the target object,
A plurality of the above-mentioned television cameras are installed, the same target is photographed from different angles, and each discrimination signal output from the image processing device based on the image signal of each television camera is A
The configuration is such that output is performed via the ND circuit.

【0009】また第2の手段は、上記の第1の手段にお
けるテレビカメラから出力される画像信号の色信号とし
て、単一色又は2色混合の色信号を用い、上記目標物の
色をその色信号の色と一致させた構成としたものであ
る。
The second means uses a color signal of a single color or a mixture of two colors as the color signal of the image signal output from the television camera in the above-mentioned first means, and changes the color of the target to that color. It is configured to match the signal color.

【0010】[0010]

【作用】上記の監視装置は、両方のテレビカメラで撮影
した目標物がそれぞれの画面のウインドウに入ったか否
かを画像解析装置においてウインドウ内の当該目標物の
画像のドット数により判別し、画像解析装置から出力さ
れる二つの判別信号の内容が一致する場合に限りAND
回路を経て所要の出力、例えば警報信号を出力する。
The above-mentioned monitoring device determines whether or not the target imaged by both TV cameras has entered the window of each screen by the image analysis device based on the number of dots of the image of the target object in the window. AND only when the contents of the two discrimination signals output from the analyzer match
A required output, for example, an alarm signal is output through the circuit.

【0011】[0011]

【実施例】図1に示す実施例は、送電線1とクレーン2
の位置関係を監視する監視所3とクレーン2の運転者と
の間に、無線又は有線による通信設備4、4’が設けら
れる。テレビカメラ5、6は2台設置され、それぞれ9
0度方向を異にしてクレーン2の上端を撮影する。
EXAMPLE An example shown in FIG. 1 is a transmission line 1 and a crane 2.
Wireless or wired communication equipment 4, 4'is provided between the monitoring station 3 for monitoring the positional relationship between the operator and the operator of the crane 2. Two TV cameras 5 and 6 are installed, each 9
The upper end of the crane 2 is photographed with the direction of 0 ° different.

【0012】上記の各テレビカメラ5、6から出力され
る画像信号aは、監視所3の画像解析装置7に入力され
る。この画像解析装置7は従来公知のものであり、画面
(この画面はモニター8、9で見ることができる。)の
任意の位置にウインドウ10をキーボード11の操作に
より設定することができ、そのウインドウ10内の画像
の画素数が一定の基準値に達すると判別信号bを出力す
る。
The image signal a output from each of the television cameras 5 and 6 is input to the image analysis device 7 of the monitoring station 3. This image analysis device 7 is conventionally known, and a window 10 can be set at an arbitrary position on a screen (this screen can be viewed on the monitors 8 and 9) by operating the keyboard 11. When the number of pixels of the image within 10 reaches a certain reference value, the discrimination signal b is output.

【0013】上記の判別信号bはAND回路12に入力
される。AND回路12の出力側には警報装置13が接
続され、両方の判別信号bが一致した場合に警報信号c
がAND回路12から警報装置13に入力されるので、
警報装置13は所要の警報を発する。監視員はその警報
に基づき通信設備4、4’を経てクレーン2の運転者に
通報する。
The discrimination signal b is input to the AND circuit 12. An alarm device 13 is connected to the output side of the AND circuit 12, and when both determination signals b match, the alarm signal c
Is input to the alarm device 13 from the AND circuit 12,
The alarm device 13 issues a required alarm. Based on the alarm, the observer notifies the operator of the crane 2 via the communication equipments 4 and 4 '.

【0014】上記のテレビカメラ5、6は、通常のもの
と同様に3原色の色信号を用いるものであるが、この発
明においては、その色信号を1色のみ(例えば赤のみ)
とし、クレーン2の頭部をその色(即ち、赤)に着色す
るようにするようにしてもよい。色信号を1色のみにす
る方法は、テレビカメラ5、6に設けられたG及びBの
コードの接続を外し、Rコードのみで画像信号を画像解
析装置7に入力することにより実現できる。
The television cameras 5 and 6 use the color signals of the three primary colors as in the normal ones. However, in the present invention, only one color signal (for example, only red) is used as the color signal.
Alternatively, the head of the crane 2 may be colored in that color (that is, red). The method of using only one color signal can be realized by disconnecting the G and B codes provided on the television cameras 5 and 6 and inputting the image signal to the image analysis device 7 using only the R code.

【0015】このようにすると、赤色に着色したクレー
ンは撮影されるが、それ以外の色の物、例えば雲や鳥な
どは撮影されない。
In this way, the crane colored red is photographed, but the objects of other colors, such as clouds and birds, are not photographed.

【0016】なお、2原色の混合色、例えば赤と緑の加
色混合色を用い、クレーン2をその色に着色しておけ
ば、上記と同様の効果がえられる。
If a mixed color of two primary colors, for example, an additive mixed color of red and green is used and the crane 2 is colored in that color, the same effect as described above can be obtained.

【0017】[0017]

【発明の効果】以上のように、この発明は向きの異なる
複数台のテレビカメラで対象物以外の物を同時に撮影す
る機会はきわめて少ないことにかんがみ、複数台のテレ
ビカメラで撮影して得られた画像信号を画像解析装置に
入力し、その画像解析装置から出力された判別信号のA
NDをとることとしたので、判別精度を向上させる効果
がある。
As described above, according to the present invention, it is possible to obtain an image by using a plurality of television cameras in consideration of the fact that it is extremely unlikely that a plurality of television cameras having different directions can simultaneously photograph an object other than the object. Image signal is input to the image analysis device, and A of the discrimination signal output from the image analysis device is input.
Since ND is taken, there is an effect of improving the discrimination accuracy.

【図面の簡単な説明】[Brief description of drawings]

【図1】実施例のブロック図FIG. 1 is a block diagram of an embodiment.

【符号の説明】[Explanation of symbols]

1 送電線 2 クレーン 3 監視所 4、4’ 通信設備 5、6 テレビカメラ 6、7 画像解析装置 8、9 モニター 10 ウインドウ 11 キーボード 12 AND回路 13 警報装置 1 Transmission Line 2 Crane 3 Monitoring Station 4, 4'Communication Equipment 5, 6 Television Camera 6, 7 Image Analysis Device 8, 9 Monitor 10 Window 11 Keyboard 12 AND Circuit 13 Alarm Device

───────────────────────────────────────────────────── フロントページの続き (72)発明者 赤坂 一郎 大阪市西区阿波座2丁目1番4号 住友電 設株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ichiro Akasaka 2-14 Awaza Nishi-ku, Osaka City Sumitomo Electric Co., Ltd.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 目標物を撮影するテレビカメラと、その
テレビカメラから出力される画像信号にウインドウを重
畳せしめると共にそのウインドウと上記目標物の画像と
の位置関係に基づく判別信号を出力する画像解析装置と
から成るテレビカメラを用いた監視装置において、上記
のテレビカメラを複数台設置し、それぞれ同一目標物を
異なった角度から撮影し、各テレビカメラの画像信号に
基づき画像処理装置から出力される各判別信号をAND
回路を経て出力するようにしたことを特徴とするテレビ
カメラを用いた監視装置。
1. A television camera for photographing a target, and an image analysis for superimposing a window on an image signal output from the television camera and outputting a discrimination signal based on a positional relationship between the window and the image of the target. In a surveillance device using a television camera composed of a device, a plurality of the above television cameras are installed, the same target is photographed from different angles, and the image processing device outputs it based on the image signal of each television camera. AND each discrimination signal
A monitoring device using a television camera, characterized in that the output is made via a circuit.
【請求項2】 テレビカメラから出力される画像信号の
色信号として、単一色又は2色混合の色信号を用い、上
記目標物の色をその色信号の色と一致させたことを特徴
とする請求項1に記載のテレビカメラを用いた監視装
置。
2. A color signal of a single color or a mixture of two colors is used as a color signal of an image signal output from a television camera, and the color of the target is matched with the color of the color signal. A surveillance device using the television camera according to claim 1.
JP30061991A 1991-11-15 1991-11-15 Monitor using television camera Pending JPH05137142A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP30061991A JPH05137142A (en) 1991-11-15 1991-11-15 Monitor using television camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP30061991A JPH05137142A (en) 1991-11-15 1991-11-15 Monitor using television camera

Publications (1)

Publication Number Publication Date
JPH05137142A true JPH05137142A (en) 1993-06-01

Family

ID=17887043

Family Applications (1)

Application Number Title Priority Date Filing Date
JP30061991A Pending JPH05137142A (en) 1991-11-15 1991-11-15 Monitor using television camera

Country Status (1)

Country Link
JP (1) JPH05137142A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007276947A (en) * 2006-04-06 2007-10-25 Chugoku Electric Power Co Inc:The Laser beam receiving device and warning device using the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54124621A (en) * 1978-02-27 1979-09-27 Philips Nv Monitor
JPS6490839A (en) * 1987-09-30 1989-04-07 Tokyo Keiki Kk Obstacle detector for working vehicle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54124621A (en) * 1978-02-27 1979-09-27 Philips Nv Monitor
JPS6490839A (en) * 1987-09-30 1989-04-07 Tokyo Keiki Kk Obstacle detector for working vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007276947A (en) * 2006-04-06 2007-10-25 Chugoku Electric Power Co Inc:The Laser beam receiving device and warning device using the same

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