JP2000333159A - Monitor camera system - Google Patents

Monitor camera system

Info

Publication number
JP2000333159A
JP2000333159A JP11139449A JP13944999A JP2000333159A JP 2000333159 A JP2000333159 A JP 2000333159A JP 11139449 A JP11139449 A JP 11139449A JP 13944999 A JP13944999 A JP 13944999A JP 2000333159 A JP2000333159 A JP 2000333159A
Authority
JP
Japan
Prior art keywords
priority
monitoring target
surveillance camera
size
network
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.)
Granted
Application number
JP11139449A
Other languages
Japanese (ja)
Other versions
JP4306017B2 (en
Inventor
Tsutomu Tsunejima
勤 経島
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.)
Fujitsu General Ltd
Original Assignee
Fujitsu General 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 Fujitsu General Ltd filed Critical Fujitsu General Ltd
Priority to JP13944999A priority Critical patent/JP4306017B2/en
Publication of JP2000333159A publication Critical patent/JP2000333159A/en
Application granted granted Critical
Publication of JP4306017B2 publication Critical patent/JP4306017B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Burglar Alarm Systems (AREA)
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Abstract

PROBLEM TO BE SOLVED: To obtain a monitor camera system where a proper monitor camera can monitor an object even when a plurality of monitor cameras detect the object. SOLUTION: The monitor camera 10 has an intelligent function and is connected to a network L1 to transmit a packet signal consisting of a video signal or the like. A system control section 30 is connected to the network L1, through which a packet signal consisting of a control signal or the like is transmitted to control the monitor camera 10, receives a video signal sent from the monitor camera 10, a video monitor 40 displays it for supervision. The monitor camera 10 is provided with a characteristics detection section that detects a characteristics of a monitor object such as a size and motion of the object and with a priority calculation section that calculates the monitor priority on the basis of the characteristics of the monitor object detected by the characteristics detection section. The system control section 30 places priority on a corresponding monitor camera to the priority transmitted from each monitor camera and monitors the video signal from the selected monitor camera.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、複数の監視カメラ
をネットワークに接続して監視を行う場合に、複数の監
視カメラが対象物を検出した場合にも適切な監視カメラ
により監視を行うことができる監視カメラシステムに関
する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a case where a plurality of surveillance cameras are connected to a network to perform surveillance. It relates to a surveillance camera system that can be used.

【0002】[0002]

【従来の技術】公共施設のホールや廊下等に設置した複
数台の監視カメラにセンサ機能等のインテリジェント機
能を持たせてネットワークに接続して、センサにより監
視対象物を検出した監視カメラの映像信号を監視するよ
うにすることにより、きめ細かい監視が可能となる。し
かし、このような監視カメラシステムでは、複数の監視
カメラによって対象物をとらえると一斉にセンサが反応
して、ネットワークのトラフィックが混乱してしまい、
動画伝送に支障を来すことともなる。
2. Description of the Related Art A plurality of surveillance cameras installed in public facilities such as halls and corridors are provided with intelligent functions such as sensor functions and are connected to a network. , Monitoring can be performed in detail. However, in such a surveillance camera system, when multiple surveillance cameras capture an object, the sensors react at the same time, disrupting network traffic,
This can hinder video transmission.

【0003】[0003]

【発明が解決しようとする課題】本発明は上記問題点に
鑑みなされたもので、複数の監視カメラが対象物を検出
した場合にも適切な監視カメラにより監視を行うことが
できる監視カメラシステムを構築することを目的とす
る。
SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has an object to provide a surveillance camera system which can perform monitoring by an appropriate surveillance camera even when a plurality of surveillance cameras detect an object. The purpose is to build.

【0004】[0004]

【課題を解決するための手段】複数の監視カメラとこれ
らを制御するシステム制御部をネットワーク上に接続
し、監視カメラからネットワークを介して伝送される映
像信号をシステム制御部に接続した映像モニタに表示し
て所定の場所を監視する監視カメラシステムにおいて、
各監視カメラに監視対象の大きさ、動きその他の監視対
象の特徴を検出する特徴検出部と、特徴検出部で検出さ
れた監視対象の特徴から監視の優先度を算出する優先度
算出部を設け、システム制御部で各監視カメラから伝送
される優先度に応じて該当する監視カメラに優先権を与
えることにより、優先度の高い監視カメラからの映像信
号をネットワーク上に乗せて監視を行うようにする。
A plurality of surveillance cameras and a system control unit for controlling the plurality of surveillance cameras are connected on a network, and a video signal transmitted from the surveillance camera via the network is transmitted to a video monitor connected to the system control unit. In a surveillance camera system that displays and monitors a predetermined place,
Each surveillance camera is provided with a feature detection unit that detects the size and movement of the monitoring target and other features of the monitoring target, and a priority calculation unit that calculates a monitoring priority from the features of the monitoring target detected by the feature detection unit. By assigning a priority to a corresponding surveillance camera in accordance with the priority transmitted from each surveillance camera in the system control unit, a video signal from a high-priority surveillance camera is put on a network to perform monitoring. I do.

【0005】特徴検出部では、被写体の動き検出を行い
その動き部分の大きさを監視対象の大きさとし、優先度
算出部では、特徴検出部で検出した監視対象の大きさを
画面全体全体の大きさと比較した比率から優先度を算出
するものとする。
The feature detecting section detects the movement of the subject and sets the size of the moving portion as the size of the monitoring target. The priority calculating section uses the size of the monitoring target detected by the feature detecting section as the size of the entire screen. The priority is calculated from the ratio compared with the priority.

【0006】特徴検出部では、被写体の動き検出を行う
ことにより監視対象の大きさを検出するとともに、監視
対象の動く速さを検出し、優先度算出部では、特徴検出
部で検出した監視対象の大きさを画面全体の大きさと比
較した比率から優先度を算出するとともに、監視対象の
動きが速いときは優先度を上げる。
The feature detecting section detects the size of the monitoring target by detecting the movement of the subject, and also detects the moving speed of the monitoring target. The priority calculating section detects the monitoring target detected by the feature detecting section. The priority is calculated from the ratio of the size of the object to the size of the entire screen, and when the movement of the monitoring target is fast, the priority is increased.

【0007】特徴検出部では、被写体の動き検出を行う
ことにより監視対象の大きさを検出するとともに、監視
対象の大きさが次第に小さくなることから監視対象が遠
ざかると判定し、優先度算出部では、特徴検出部で検出
した監視対象の大きさを画面全体の大きさと比較した比
率から優先度を算出するとともに、監視対象が遠ざかる
ときは優先度を下げる。
The feature detection unit detects the size of the monitoring target by detecting the movement of the subject, and determines that the monitoring target moves away because the size of the monitoring target gradually decreases. The priority is calculated from the ratio of the size of the monitoring target detected by the feature detection unit to the size of the entire screen, and the priority is lowered when the monitoring target moves away.

【0008】優先度算出部で判定した優先度が所定の値
より高いときは、優先度のデータとアラーム信号をネッ
トワークに乗せて伝送し、そのアラーム信号をシステム
制御部で受信し、所定の時間内に他のカメラからのアラ
ーム信号が伝送されないときにはそのアラーム信号を発
した監視カメラに優先権を付与する処理を行う。
When the priority determined by the priority calculation section is higher than a predetermined value, the data of the priority and an alarm signal are transmitted over a network, the alarm signal is received by the system control section, and a predetermined time is transmitted. When an alarm signal from another camera is not transmitted within the camera, a process of giving a priority to the monitoring camera that has issued the alarm signal is performed.

【0009】システム制御部で複数のアラーム信号を受
信した場合には、優先度の高い監視カメラに優先権を付
与する。
When a plurality of alarm signals are received by the system control unit, a priority is given to a monitoring camera having a high priority.

【0010】優先度算出部では、監視対象の大きさが次
第に小さくなることから監視対象が遠ざかると判定し
て、監視対象が遠ざかるときには優先権を放棄する棄権
信号をネットワークに乗せて伝送し、その棄権信号をシ
ステム制御部で受信し、他の優先度の高い監視カメラに
優先権を付与する処理を行う。
[0010] The priority calculation unit determines that the monitoring target is going away because the size of the monitoring target is gradually reduced, and when the monitoring target goes away, transmits an abstention signal for relinquishing the priority on the network. The system control unit receives the abstention signal and performs a process of giving a priority to another monitoring camera with a higher priority.

【0011】優先権を付与された監視カメラは、一定時
間毎にネットワークのブロードキャストアドレスにより
優先度算出部で判定する優先度のデータを伝送し、他の
監視カメラでそのデータを受信し自己の優先度算出部で
判定する優先度と比較して、自己の優先度が高いときに
は、アラーム信号をネットワーク上に乗せるて伝送す
る。
The surveillance camera to which the priority is given transmits data of the priority determined by the priority calculation unit by the broadcast address of the network at regular time intervals, receives the data by another surveillance camera, and receives its own priority. When its own priority is higher than the priority determined by the degree calculation unit, the alarm signal is transmitted over a network.

【0012】ネットワークは、高速イーサネットまたは
IEEE1394ロング規格とする。
The network is a high-speed Ethernet or IEEE 1394 long standard.

【0013】システム制御部は、汎用のパソコンで構成
する。
The system control section comprises a general-purpose personal computer.

【0014】[0014]

【発明の実施の形態】以下に本発明の実施の形態につい
て、図を用いて説明する。図1は、本発明による監視カ
メラシステムの1実施例の概要ブロック図である。公共
施設のホールや廊下等に複数台の監視カメラ10、1
0、・・を設置して、侵入物等を監視する。監視カメラ
10、10、・・には、インテリジェント機能を持たせ
て高速イーサネット等からなるネットワークL1と接続
して映像信号等からなるパケット信号を伝送する。ネッ
トワークL1には、またシステム制御部30を接続し
て、制御信号等からなるパケット信号を伝送して監視カ
メラ10、10、・・を制御するとともに、監視カメラ
10、10、・・から伝送される映像信号を受信し映像
モニタ40に表示して、ホールや廊下等の監視を行う。
各監視カメラ10、10、・・には、監視対象の大き
さ、動きその他の監視対象の特徴を検出する特徴検出部
と、特徴検出部で検出された監視対象の特徴から監視の
優先度を算出する優先度算出部を設けて、システム制御
部30で各監視カメラから伝送される優先度に応じて該
当する監視カメラに優先権を与えることにより、優先度
の高い監視カメラからの映像信号をネットワークL1上
に乗せて監視を行うようにする。
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic block diagram of one embodiment of a surveillance camera system according to the present invention. In the halls and corridors of public facilities, multiple surveillance cameras 10, 1
0, .. is installed to monitor intruders and the like. The surveillance cameras 10, 10,... Have intelligent functions and are connected to a network L1 such as a high-speed Ethernet to transmit packet signals such as video signals. The network control unit 30 is connected to the network L1 to control the surveillance cameras 10, 10,... By transmitting packet signals including control signals and the like, and transmitted from the surveillance cameras 10, 10,. The video signal is received and displayed on the video monitor 40 to monitor a hall or a corridor.
Each of the surveillance cameras 10, 10,... Has a feature detection unit that detects the size, movement, and other characteristics of the monitoring target, and a monitoring priority based on the monitoring target features detected by the feature detection unit. By providing a priority calculating unit for calculating, the system control unit 30 gives a priority to the corresponding monitoring camera according to the priority transmitted from each monitoring camera, so that the video signal from the high-priority monitoring camera can be transmitted. The monitoring is performed on the network L1.

【0015】図2は、本発明による監視カメラシステム
の1実施例の監視カメラ部分の要部ブロック図である。
監視カメラ10のCCD(Charge Coupled Device )等
からなる撮像部11よりの映像信号をA/D変換部12
でディジタル映像信号に変換して、特徴検出部13のフ
レームメモリ13aに記憶する。特徴検出部13は、例
えば、複数のフレームを記憶するフレームメモリ13a
と、その記憶データを用いて被写体の動きを検出する動
き検出部13bと、動き検出部で検出される動き部分の
大きさを検出する大きさ検出部13cから構成する。動
き検出部13bでは、フレームメモリ13aに記憶した
複数フレームのデータからフレーム間の比較を行って、
被写体の動く部分から侵入物等の監視対象を検出する。
大きさ検出部13cでは、動き検出部13bで検出する
監視対象の大きさを検出する。優先度算出部14では、
特徴検出部13で検出した監視対象の大きさを1つのフ
レーム全体の大きさである画面全体の大きさと比較した
比率から優先度を算出する。そして、例えば監視対象の
大きさが所定の大きさより大きいときには優先度が大き
いとして、監視カメラ全体を制御する制御部15にアラ
ーム信号を出力する。制御部15では、これにより通信
部17を制御して、アラーム信号に監視対象の大きさ等
からなる優先度データを付加した伝送パケットを作成し
て、ネットワークL1を介してシステム制御部30に伝
送する。
FIG. 2 is a block diagram of a main part of a surveillance camera part of a surveillance camera system according to one embodiment of the present invention.
A video signal from an imaging unit 11 such as a CCD (Charge Coupled Device) of the surveillance camera 10 is converted into an A / D conversion unit 12.
And converts it into a digital video signal, and stores it in the frame memory 13a of the feature detection unit 13. The feature detection unit 13 includes, for example, a frame memory 13a that stores a plurality of frames.
And a motion detecting unit 13b that detects the motion of the subject using the stored data, and a size detecting unit 13c that detects the size of the moving part detected by the motion detecting unit. The motion detection unit 13b performs comparison between frames based on data of a plurality of frames stored in the frame memory 13a,
A monitoring target such as an intruder is detected from a moving part of the subject.
The size detection unit 13c detects the size of the monitoring target detected by the motion detection unit 13b. In the priority calculation unit 14,
The priority is calculated from the ratio of the size of the monitoring target detected by the feature detection unit 13 to the size of the entire screen which is the size of one frame. For example, when the size of the monitoring target is larger than a predetermined size, the priority is determined to be high, and an alarm signal is output to the control unit 15 that controls the entire monitoring camera. The control unit 15 controls the communication unit 17 to create a transmission packet in which priority data including the size of the monitoring target is added to the alarm signal, and transmits the transmission packet to the system control unit 30 via the network L1. I do.

【0016】特徴検出部13では、上記のように動き検
出部13bでフレームメモリ13aのフレーム間データ
から被写体の動き検出を行うことにより監視対象の大き
さを検出するとともに、さらに監視対象の動く速さをも
検出する。そして、優先度算出部14では、特徴検出部
13の大きさ検出部13cで検出した監視対象の大きさ
を画面全体の大きさと比較してその比率から優先度を算
出するとともに、動き検出部13bで検出した監視対象
の速さから、監視対象の動きが速いときは優先度を上げ
るようにするこもできる。
The feature detecting section 13 detects the size of the monitoring target by detecting the motion of the subject from the inter-frame data of the frame memory 13a by the motion detecting section 13b as described above, and further detects the moving speed of the monitoring target. Is also detected. The priority calculation unit 14 compares the size of the monitoring target detected by the size detection unit 13c of the feature detection unit 13 with the size of the entire screen, calculates the priority from the ratio, and calculates the priority. If the movement of the monitoring target is fast, the priority can be raised based on the speed of the monitoring target detected in step (1).

【0017】特徴検出部13の大きさ検出部13cで検
出する監視対象の大きさから、優先度算出部14で監視
対象の大きさが次第に小さくなることから監視対象が遠
ざかると判定して、特徴検出部13で検出した監視対象
の大きさを画面全体の大きさと比較した比率から優先度
を算出するとともに、監視対象が遠ざかるときは優先度
を下げるようにするこもできる。
Based on the size of the monitoring target detected by the size detecting unit 13c of the feature detecting unit 13, the priority calculating unit 14 determines that the monitoring target is going away from the monitoring target because the size of the monitoring target is gradually reduced. The priority can be calculated from the ratio of the size of the monitoring target detected by the detection unit 13 to the size of the entire screen, and the priority can be lowered when the monitoring target moves away.

【0018】優先度算出部14で判定した優先度が所定
の値より高いときは、通信部17でその優先度のデータ
とアラーム信号をパケット信号としてネットワークL1
に乗せて伝送する。そのアラーム信号をシステム制御部
30で受信したときには、所定の時間(例えば1mse
c)内に他のカメラからのアラーム信号が伝送されない
ときには、そのアラーム信号を発した監視カメラに優先
権を付与する処理を行う。そして、優先権を得た監視カ
メラでは、撮像部11で得た映像信号を圧縮処理部16
で帯域圧縮を行い、通信部17からパケット信号として
ネットワークL1を介してシステム制御部30に伝送
し、映像モニタに表示して監視する。なお、システム制
御部30で所定の時間以内に複数のアラーム信号を受信
した場合には、優先度の高い監視カメラに優先権を付与
するようにしても良い。
When the priority determined by the priority calculation unit 14 is higher than a predetermined value, the communication unit 17 uses the data of the priority and an alarm signal as a packet signal to transmit data to the network L1.
To be transmitted. When the system control unit 30 receives the alarm signal, a predetermined time (for example, 1 ms
When an alarm signal from another camera is not transmitted in c), a process of giving priority to the monitoring camera that has issued the alarm signal is performed. In the surveillance camera that has obtained the priority, the video signal obtained by the imaging unit 11 is compressed by the compression processing unit 16.
, And transmits the packet signal from the communication unit 17 to the system control unit 30 via the network L1 as a packet signal, and displays it on a video monitor for monitoring. When a plurality of alarm signals are received within a predetermined time by the system control unit 30, a priority may be given to a monitoring camera with a higher priority.

【0019】また、別の実施例としては、上記のように
優先度算出部14で監視対象の大きさが次第に小さくな
ることから監視対象が遠ざかると判定して、監視対象が
遠ざかるときには優先権を放棄する棄権信号を通信部1
7によりパケット信号としネットワークL1に乗せて伝
送する。その棄権信号を受信したシステム制御部30で
は、他の優先度の高い監視カメラ10に優先権を付与す
る処理を行うようにすることもできる。
As another embodiment, as described above, since the size of the monitoring target gradually decreases in the priority calculation unit 14, it is determined that the monitoring target is going away, and the priority is set when the monitoring target goes away. Communication unit 1 to give up abandonment signal
7 and transmitted as a packet signal on the network L1. The system control unit 30 that has received the abstention signal may perform a process of giving a priority to another monitoring camera 10 having a higher priority.

【0020】さらに、優先権を付与された監視カメラ1
0からは、一定時間毎にネットワークL1上のブロード
キャストアドレスにより優先度算出部14で判定する優
先度のデータを伝送する。他の監視カメラ10でそのデ
ータを受信し、自己の優先度算出部14で判定する優先
度と比較して、自己の優先度が高いときには、通信部1
7によりアラーム信号をネットワークL1上に乗せて伝
送する。そのアラーム信号をシステム制御部30で受信
したときには、所定の時間(例えば1msec)内に他
のカメラからのアラーム信号が伝送されないときには、
そのアラーム信号を発した監視カメラに優先権を付与す
る処理を行う。なお、ネットワークL1は映像信号等か
らなるパケット信号を伝送するため、高速イーサネット
あるいはIEEE1394ロング規格等の高速のネット
ワークが望ましい。また、システム制御部30は汎用の
パソコンで構成することで、システム管理をソフトウェ
アにより行うことができるため、監視カメラ10の追加
等のシステムの変更に柔軟に対応が可能となる。
Further, the surveillance camera 1 to which the priority is given
From 0, data of the priority determined by the priority calculation unit 14 is transmitted at regular intervals by the broadcast address on the network L1. When the data is received by another surveillance camera 10 and its own priority is higher than the priority determined by its own priority calculator 14, the communication unit 1
7, the alarm signal is transmitted on the network L1. When the alarm signal is received by the system control unit 30, when the alarm signal from another camera is not transmitted within a predetermined time (for example, 1 msec),
A process for giving priority to the surveillance camera that has issued the alarm signal is performed. Since the network L1 transmits a packet signal composed of a video signal or the like, a high-speed network such as a high-speed Ethernet or an IEEE 1394 long standard is desirable. In addition, since the system control unit 30 is configured by a general-purpose personal computer, the system management can be performed by software. Therefore, it is possible to flexibly cope with a change in the system such as the addition of the monitoring camera 10.

【0021】[0021]

【発明の効果】以上に記載したように、複数の監視カメ
ラとこれらを制御するシステム制御部をネットワーク上
に接続し、監視カメラからネットワークを介して伝送さ
れる映像信号をシステム制御部に接続した映像モニタに
表示して所定の場所を監視する監視カメラシステムにお
いて、各監視カメラに監視対象の大きさ、動きその他の
監視対象の特徴を検出する特徴検出部と、特徴検出部で
検出された監視対象の特徴から監視の優先度を算出する
優先度算出部を設け、システム制御部で各監視カメラか
ら伝送される優先度に応じて該当する監視カメラに優先
権を与えることにより、優先度の高い監視カメラからの
映像信号をネットワーク上に乗せて監視を行うようにす
ることにより、複数の監視カメラが対象物を検出した場
合にも適切な監視カメラにより監視を行うことが可能と
なる。そのため、ネットワーク上のトラフィックの混雑
が解消し、コマ落ちしない動画像を得ることができる。
また、監視対象を監視するのに適切な監視カメラが選択
されるために、効果的な監視が可能となる。
As described above, a plurality of surveillance cameras and a system control unit for controlling them are connected on a network, and video signals transmitted from the surveillance cameras via the network are connected to the system control unit. In a surveillance camera system that displays on a video monitor and monitors a predetermined location, a feature detection unit that detects the size, movement, and other characteristics of the monitoring target in each monitoring camera, and a monitoring that is detected by the feature detection unit A priority calculation unit that calculates the monitoring priority from the target feature is provided, and the system control unit assigns a priority to the corresponding monitoring camera according to the priority transmitted from each monitoring camera. By monitoring video signals from surveillance cameras on the network, it is possible to monitor even if multiple surveillance cameras detect an object. It is possible to perform the monitoring by camera. Therefore, traffic congestion on the network is eliminated, and a moving image that does not drop frames can be obtained.
In addition, since an appropriate monitoring camera is selected for monitoring a monitoring target, effective monitoring can be performed.

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

【図1】本発明による監視カメラシステムの1実施例の
概要ブロック図である。
FIG. 1 is a schematic block diagram of an embodiment of a surveillance camera system according to the present invention.

【図2】本発明による監視カメラシステムの1実施例の
監視カメラ部分の要部ブロック図である。
FIG. 2 is a main part block diagram of a surveillance camera part of the surveillance camera system according to one embodiment of the present invention.

【符号の説明】[Explanation of symbols]

10 監視カメラ 11 撮像部 12 A/D変換部 13 特徴検出部 13a フレームメモリ 13b 動き検出部 13c 大きさ検出部 14 優先度算出部 15 制御部 16 圧縮処理部 17 通信部 30 システム制御部 40 映像モニタ L1 ネットワーク Reference Signs List 10 monitoring camera 11 imaging unit 12 A / D conversion unit 13 feature detection unit 13a frame memory 13b motion detection unit 13c size detection unit 14 priority calculation unit 15 control unit 16 compression processing unit 17 communication unit 30 system control unit 40 video monitor L1 network

───────────────────────────────────────────────────── フロントページの続き Fターム(参考) 5C054 AA01 CA04 CC05 CE16 CH01 DA09 EA01 EA03 EA05 EB05 EG09 FC12 FC13 FF06 HA19 5C084 AA02 AA07 BB31 CC19 DD12 GG18 GG42 GG52 GG54 GG78 HH10 HH12 HH13 5C087 AA02 AA03 AA09 AA24 BB52 DD05 DD20 EE05 EE07 GG02 GG07  ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference) EE05 EE07 GG02 GG07

Claims (10)

【特許請求の範囲】[Claims] 【請求項1】 複数の監視カメラとこれらを制御するシ
ステム制御部をネットワーク上に接続し、監視カメラか
らネットワークを介して伝送される映像信号をシステム
制御部に接続した映像モニタに表示して所定の場所を監
視する監視カメラシステムにおいて、各監視カメラに監
視対象の大きさ、動きその他の監視対象の特徴を検出す
る特徴検出部と、特徴検出部で検出された監視対象の特
徴から監視の優先度を算出する優先度算出部を設け、シ
ステム制御部で各監視カメラから伝送される優先度に応
じて該当する監視カメラに優先権を与えることにより、
優先度の高い監視カメラからの映像信号をネットワーク
上に乗せて監視を行うようにすることを特徴とした監視
カメラシステム。
1. A plurality of surveillance cameras and a system control unit for controlling the surveillance cameras are connected on a network, and a video signal transmitted from the surveillance camera via the network is displayed on a video monitor connected to the system control unit and a predetermined signal is displayed. In a surveillance camera system that monitors the location of a surveillance camera, each surveillance camera has a feature detection unit that detects the size, motion, and other characteristics of the surveillance target. By providing a priority calculation unit that calculates the degree, the system control unit gives priority to the corresponding monitoring camera according to the priority transmitted from each monitoring camera,
A surveillance camera system characterized in that a video signal from a high-priority surveillance camera is put on a network for monitoring.
【請求項2】 特徴検出部では、被写体の動き検出を行
いその動き部分の大きさを監視対象の大きさとし、優先
度算出部では、特徴検出部で検出した監視対象の大きさ
を画面全体の大きさと比較した比率から優先度を算出す
るものとすることを特徴とした請求項1記載の監視カメ
ラシステム。
2. A feature detecting section for detecting a motion of a subject and setting a size of the moving portion as a size of a monitoring target, and a priority calculating section determines a size of the monitoring target detected by the feature detecting section on an entire screen. The surveillance camera system according to claim 1, wherein the priority is calculated from a ratio compared with the size.
【請求項3】 特徴検出部では、被写体の動き検出を行
うことにより監視対象の大きさを検出するとともに、監
視対象の動く速さを検出し、優先度算出部では、特徴検
出部で検出した監視対象の大きさを画面全体の大きさと
比較した比率から優先度を算出するとともに、監視対象
の動きが速いときは優先度を上げることを特徴とした請
求項1記載の監視カメラシステム。
3. The feature detecting section detects the size of the monitoring target by detecting the movement of the subject, detects the moving speed of the monitoring target, and the priority calculating section detects the speed of the monitoring target by the feature detecting section. The surveillance camera system according to claim 1, wherein the priority is calculated from a ratio of the size of the monitoring target to the size of the entire screen, and the priority is increased when the movement of the monitoring target is fast.
【請求項4】 特徴検出部では、被写体の動き検出を行
うことにより監視対象の大きさを検出するとともに、監
視対象の大きさが次第に小さくなることから監視対象が
遠ざかると判定し、優先度算出部では、特徴検出部で検
出した監視対象の大きさを画面全体の大きさと比較した
比率から優先度を算出するとともに、監視対象が遠ざか
るときは優先度を下げることを特徴とした請求項1記載
の監視カメラシステム。
4. A feature detection unit detects the size of the monitoring target by detecting the movement of the subject, and determines that the monitoring target moves away from the monitoring target because the size of the monitoring target gradually decreases, and calculates a priority. 2. The unit according to claim 1, wherein the priority is calculated from a ratio of the size of the monitoring target detected by the feature detection unit to the size of the entire screen, and the priority is reduced when the monitoring target moves away. Surveillance camera system.
【請求項5】 優先度算出部で判定した優先度が所定の
値より高いときは、優先度のデータとアラーム信号をネ
ットワークに乗せて伝送し、そのアラーム信号をシステ
ム制御部で受信し、所定の時間内に他のカメラからのア
ラーム信号が伝送されないときにはそのアラーム信号を
発した監視カメラに優先権を付与する処理を行うことを
特徴とした請求項1記載の監視カメラシステム。
5. When the priority determined by the priority calculation unit is higher than a predetermined value, the priority data and the alarm signal are transmitted over a network, and the alarm signal is received by the system control unit, and 2. The surveillance camera system according to claim 1, wherein when an alarm signal from another camera is not transmitted within the time, a process of giving priority to the surveillance camera which has issued the alarm signal is performed.
【請求項6】 システム制御部で複数のアラーム信号を
受信した場合には、優先度の高い監視カメラに優先権を
付与することを特徴とした請求項5記載の監視カメラシ
ステム。
6. The surveillance camera system according to claim 5, wherein when a plurality of alarm signals are received by the system control unit, a priority is given to a surveillance camera having a higher priority.
【請求項7】 優先度算出部では、監視対象の大きさが
次第に小さくなることから監視対象が遠ざかると判定し
て、監視対象が遠ざかるときには優先権を放棄する棄権
信号をネットワークに乗せて伝送し、その棄権信号をシ
ステム制御部で受信し、他の優先度の高い監視カメラに
優先権を付与する処理を行うことを特徴とした請求項5
記載の監視カメラシステム。
7. The priority calculation unit determines that the monitoring target is going away because the size of the monitoring target is gradually reduced, and transmits an abstention signal for relinquishing the priority right on the network when the monitoring target goes away. 6. The system according to claim 5, wherein the system control unit receives the abstention signal and assigns a priority to another monitoring camera having a higher priority.
The surveillance camera system as described.
【請求項8】 優先権を付与された監視カメラは、一定
時間毎にネットワークのブロードキャストアドレスによ
り優先度算出部で判定する優先度のデータを伝送し、他
の監視カメラでそのデータを受信し自己の優先度算出部
で判定する優先度と比較して、自己の優先度が高いとき
には、アラーム信号をネットワーク上に乗せるて伝送す
ることを特徴とした請求項5記載の監視カメラシステ
ム。
8. A surveillance camera to which a priority is assigned transmits data of a priority determined by a priority calculation unit based on a broadcast address of a network at predetermined time intervals, receives the data by another surveillance camera, and receives the data. 6. The surveillance camera system according to claim 5, wherein when the priority is higher than the priority determined by the priority calculation unit, the alarm signal is transmitted on a network.
【請求項9】 ネットワークは、高速イーサネットまた
はIEEE1394ロング規格とすることを特徴とした
請求項1記載の監視カメラシステム。
9. The surveillance camera system according to claim 1, wherein the network is based on the high-speed Ethernet or the IEEE 1394 long standard.
【請求項10】 システム制御部は、汎用のパソコンで
構成することを特徴とした請求項1記載の監視カメラシ
ステム。
10. The surveillance camera system according to claim 1, wherein the system control unit comprises a general-purpose personal computer.
JP13944999A 1999-05-20 1999-05-20 Surveillance camera system Expired - Fee Related JP4306017B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13944999A JP4306017B2 (en) 1999-05-20 1999-05-20 Surveillance camera system

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JP2000333159A true JP2000333159A (en) 2000-11-30
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Family

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