CN101212653A - Monitoring system and method of operation thereof - Google Patents
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Abstract
Description
技术领域 technical field
本发明是有关于一种监视系统及其操作方法,且特别是有关于一种具有预测移动物体的移动方向的功能的监视系统及其操作方法。The present invention relates to a monitoring system and its operating method, and more particularly to a monitoring system with a function of predicting the moving direction of a moving object and its operating method.
背景技术 Background technique
都会地区随着经济的成长、犯罪率持续上升,社会治安因此日趋恶化,居家安全也受到威胁。为了保障家人的生命财产,并提升全家人的生活安全质量,拥有良好的居家环境除了邻里间守望相助之外,更必须搭配适当的防护措施,以有效地遏阻犯罪发生。因此,各种型态的监视系统也就不断发展出来。As the economy grows and the crime rate continues to rise in urban areas, social security is deteriorating, and home safety is also threatened. In order to protect the life and property of the family and improve the quality of life of the whole family, a good home environment must not only watch out for and help each other among neighbors, but also must be equipped with appropriate protective measures to effectively deter crimes. Therefore, various types of surveillance systems have been continuously developed.
传统监视系统包括录像机、显示器及固定式摄影机等。摄影机固定地装设于待监视区中,持续不断地将拍摄所得的图像传送至录像机中而记录于录像带内,同时将拍摄所得的图像传送至显示器以供安全人员实时监视。然而,安全人员在长时间直视显示器后很容易因疲劳而造成注意力下降,甚至发生打瞌睡的情形。如此一来,不仅在危安事件发生时会失去第一时间处理的机会,也造成事后必须花费许多时间来检视监视录像带。而且,固定式装设的摄影机也容易因摄影死角的存在而导致错失关键画面。另外,由于每卷录像带的可录时间有限,若没有实时更换录像带,将导致没有图像可供事后调阅的问题。因此,传统监视系统仍存在许多待改善的缺点,必须早日加以改善以维护大众的身家安全。Traditional surveillance systems include video recorders, monitors, and fixed cameras. The camera is fixedly installed in the area to be monitored, continuously transmits the captured images to the video recorder and records them in the video tape, and simultaneously transmits the captured images to the monitor for real-time monitoring by security personnel. However, after looking directly at the monitor for a long time, it is easy for security personnel to lose concentration due to fatigue and even fall asleep. In this way, not only will the opportunity to deal with the emergency incident be lost in the first place, but also cause a lot of time to be spent on checking the surveillance video tape afterwards. Moreover, fixed-mounted cameras are also prone to miss key images due to the existence of dead spots in shooting. In addition, since the recordable time of each video tape is limited, if the video tape is not replaced in real time, there will be no image available for subsequent retrieval. Therefore, there are still many shortcomings to be improved in the traditional monitoring system, which must be improved as early as possible to maintain the safety of the public.
发明内容 Contents of the invention
本发明提供一种监视系统,可主动检测待监视区是否出现移动目标并通过移动式摄影机连续监视移动目标。The invention provides a monitoring system, which can actively detect whether there is a moving target in the area to be monitored and continuously monitor the moving target through a mobile camera.
本发明还提供一种监视系统的操作方法,可主动检测待监视区是否出现移动目标并通过移动式摄影机连续监视移动目标。The invention also provides an operation method of the monitoring system, which can actively detect whether a moving target appears in the area to be monitored and continuously monitor the moving target through a mobile camera.
一种本发明所提出的监视系统包括至少一固定式摄影机、图像处理单元以及移动式摄影机。固定式摄影机对待监视区进行拍摄以产生第一图像。图像处理单元与固定式摄影机通联以接收第一图像,并对第一图像进行图像处理以确认是否存在任何移动目标。移动式摄影机与图像处理单元通联。当图像处理单元确认存在至少一移动目标时,图像处理单元预测移动目标的移动方向并通知移动式摄影机前往监视。A surveillance system proposed by the present invention includes at least one fixed camera, an image processing unit and a mobile camera. The fixed camera shoots the area to be monitored to generate the first image. The image processing unit communicates with the fixed camera to receive the first image, and performs image processing on the first image to confirm whether there is any moving object. The mobile camera communicates with the image processing unit. When the image processing unit confirms that there is at least one moving object, the image processing unit predicts the moving direction of the moving object and notifies the mobile camera to monitor.
在此监视系统的一实施例中,还包括通讯单元,其电性连接图像处理单元,用以在图像处理单元确认存在移动目标时通知安全人员。In an embodiment of the monitoring system, a communication unit is further included, which is electrically connected to the image processing unit, and is used for notifying security personnel when the image processing unit confirms that there is a moving object.
在此监视系统的一实施例中,还包括通讯单元,其电性连接图像处理单元,用以在图像处理单元预测移动目标的移动方向后通知安全人员移动目标的移动方向。In an embodiment of the monitoring system, a communication unit is further included, which is electrically connected to the image processing unit, and is used for notifying security personnel of the moving direction of the moving object after the image processing unit predicts the moving direction of the moving object.
在此监视系统的一实施例中,还包括储存单元,其与固定式摄影机通联,用以在图像处理单元确认存在移动目标时储存第一图像。此外,储存单元可为硬盘。In an embodiment of the surveillance system, a storage unit is further included, which communicates with the fixed camera and is used for storing the first image when the image processing unit confirms that there is a moving object. In addition, the storage unit can be a hard disk.
在此监视系统的一实施例中,还包括显示器,其与固定式摄影机通联或电性连接图像处理单元,用以显示第一图像。In an embodiment of the monitoring system, it further includes a display, which communicates with the fixed camera or is electrically connected to the image processing unit for displaying the first image.
在此监视系统的一实施例中,还包括显示器,其与移动式摄影机通联或电性连接图像处理单元,用以显示移动式摄影机所拍摄而产生的第二图像。In an embodiment of the monitoring system, it further includes a display, which communicates with the mobile camera or is electrically connected to the image processing unit for displaying the second image captured by the mobile camera.
另一种本发明所提出的监视系统包括多个固定式摄影机、图像处理单元以及储存单元。固定式摄影机对待监视区进行拍摄以产生多个第一图像。图像处理单元与固定式摄影机通联以接收第一图像,并对第一图像进行图像处理以确认是否存在任何移动目标。储存单元与固定式摄影机通联。当图像处理单元确认存在至少一移动目标时,图像处理单元预测移动目标的移动方向并依预测结果而控制储存单元连续储存这些第一图像中存在移动目标者。Another surveillance system proposed by the present invention includes a plurality of fixed cameras, an image processing unit, and a storage unit. The fixed camera shoots the area to be monitored to generate a plurality of first images. The image processing unit communicates with the fixed camera to receive the first image, and performs image processing on the first image to confirm whether there is any moving object. The storage unit communicates with the fixed camera. When the image processing unit confirms that there is at least one moving object, the image processing unit predicts the moving direction of the moving object and controls the storage unit to continuously store those in the first images in which the moving object exists according to the prediction result.
在此监视系统的一实施例中,还包括通讯单元,其电性连接图像处理单元,用以在图像处理单元确认存在移动目标时通知安全人员。In an embodiment of the monitoring system, a communication unit is further included, which is electrically connected to the image processing unit, and is used for notifying security personnel when the image processing unit confirms that there is a moving object.
在此监视系统的一实施例中,还包括通讯单元,其电性连接图像处理单元,用以在图像处理单元预测移动目标的移动方向后通知安全人员移动目标的移动方向。In an embodiment of the monitoring system, a communication unit is further included, which is electrically connected to the image processing unit, and is used for notifying security personnel of the moving direction of the moving object after the image processing unit predicts the moving direction of the moving object.
在此监视系统的一实施例中,还包括移动式摄影机,其与图像处理单元通联。图像处理单元在预测移动目标的移动方向后依预测结果而指示移动式摄影机前往监视。此外,监视系统可还包括显示器,其与移动式摄影机通联或电性连接图像处理单元,用以显示移动式摄影机所拍摄而产生的第二图像。In an embodiment of the surveillance system, a mobile video camera is also included, which communicates with the image processing unit. After predicting the moving direction of the moving object, the image processing unit instructs the mobile camera to monitor according to the prediction result. In addition, the monitoring system may further include a display, which communicates with the mobile camera or is electrically connected to the image processing unit for displaying the second image captured by the mobile camera.
在此监视系统的一实施例中,储存单元可为硬盘。In an embodiment of the monitoring system, the storage unit can be a hard disk.
在此监视系统的一实施例中,还包括显示器,其与固定式摄影机通联或电性连接图像处理单元,用以显示至少一个第一图像。In an embodiment of the surveillance system, it further includes a display, which communicates with the fixed camera or is electrically connected to the image processing unit, for displaying at least one first image.
一种本发明所提出的监视系统的操作方法中,所操作的监视系统包括至少一固定式摄影机、图像处理单元以及移动式摄影机。此监视系统的操作方法包括:由固定式摄影机对待监视区进行拍摄以产生第一图像;由图像处理单元接收第一图像,并对第一图像进行图像处理以确认是否存在任何移动目标;以及当图像处理单元确认存在至少一移动目标时,图像处理单元预测移动目标的移动方向并指示移动式摄影机前往监视。In an operating method of a monitoring system proposed by the present invention, the operating monitoring system includes at least one fixed camera, an image processing unit, and a mobile camera. The operation method of this monitoring system includes: shooting the area to be monitored by a fixed camera to generate a first image; receiving the first image by an image processing unit, and performing image processing on the first image to confirm whether there is any moving target; and When the image processing unit confirms that there is at least one moving object, the image processing unit predicts the moving direction of the moving object and instructs the mobile camera to monitor.
在此监视系统的操作方法的一实施例中,所操作的监视系统还包括通讯单元。此监视系统的操作方法还包括当图像处理单元确认存在移动目标时,通讯单元通知安全人员。In an embodiment of the method for operating a monitoring system, the operating monitoring system further includes a communication unit. The operation method of the monitoring system further includes, when the image processing unit confirms that there is a moving object, the communication unit notifies the security personnel.
在此监视系统的操作方法的一实施例中,所操作的监视系统还包括通讯单元。此监视系统的操作方法还包括当图像处理单元预测移动目标的移动方向后,通讯单元通知安全人员移动目标的移动方向。In an embodiment of the method for operating a monitoring system, the operating monitoring system further includes a communication unit. The operation method of the monitoring system further includes that after the image processing unit predicts the moving direction of the moving object, the communication unit notifies the security personnel of the moving direction of the moving object.
在此监视系统的操作方法的一实施例中,所操作的监视系统还包括储存单元。此监视系统的操作方法还包括当图像处理单元确认存在移动目标时,储存单元储存第一图像。另外,此监视系统的操作方法还包括当图像处理单元确认存在移动目标时,储存单元记录当时的时间。In an embodiment of the operating method of the monitoring system, the operating monitoring system further includes a storage unit. The operation method of the monitoring system further includes storing the first image by the storage unit when the image processing unit confirms that there is a moving object. In addition, the operation method of the monitoring system further includes that when the image processing unit confirms that there is a moving object, the storage unit records the current time.
在此监视系统的操作方法的一实施例中,所操作的监视系统还包括储存单元。此监视系统的操作方法还包括当移动式摄影机前往监视移动目标而产生第二图像时,储存单元储存第二图像。另外,所操作的监视系统可还包括显示器,而此监视系统的操作方法还包括由显示器显示第二图像。In an embodiment of the operating method of the monitoring system, the operating monitoring system further includes a storage unit. The operation method of the monitoring system further includes storing the second image in the storage unit when the mobile camera goes to monitor the moving object and generates the second image. In addition, the operating monitoring system may further include a display, and the operating method of the monitoring system further includes displaying the second image by the display.
在此监视系统的操作方法的一实施例中,所操作的监视系统还包括显示器,而此监视系统的操作方法还包括由显示器显示第一图像。In an embodiment of the monitoring system operating method, the operating monitoring system further includes a display, and the monitoring system operating method further includes displaying the first image by the display.
在此监视系统的操作方法的一实施例中,还包括当图像处理单元确认存在移动目标时,固定式摄影机由正常模式进入警戒模式。警戒模式中固定式摄影机的分辨率、更新频率与灵敏度至少其中之一高于正常模式。In an embodiment of the operation method of the surveillance system, the fixed camera enters the alert mode from the normal mode when the image processing unit confirms that there is a moving object. At least one of the resolution, update frequency, and sensitivity of the fixed camera in the alert mode is higher than that in the normal mode.
在此监视系统的操作方法的一实施例中,确认是否存在任何移动目标的方法包括:将目前的第一图像与参考图像做比较,以计算第一图像的像素相较于参考图像的像素发生改变的数量;当像素发生改变的数量小于默认值时,储存目前的第一图像作为参考图像;当像素发生改变的数量大于默认值时,设定第一图像中存在准移动目标,并计算准移动目标的面积;当面积小于默认值时,储存目前的第一图像作为参考图像;以及当面积大于默认值时,确认准移动目标为移动目标。In one embodiment of the method of operating the surveillance system, the method for determining whether there is any moving object includes: comparing the current first image with the reference image to calculate the occurrence of pixels in the first image compared to pixels in the reference image The number of changes; when the number of pixels changed is less than the default value, store the current first image as a reference image; when the number of pixels changed is greater than the default value, set the quasi-moving target in the first image, and calculate the The area of the moving target; when the area is smaller than the default value, the current first image is stored as the reference image; and when the area is larger than the default value, the quasi-moving target is confirmed as the moving target.
在此监视系统的操作方法的一实施例中,预测移动目标的移动方向的方法包括:将移动目标在前次的第一图像中的坐标减去移动目标在前次的参考图像中的坐标,以获得第一移动方向;将移动目标在目前的第一图像中的坐标减去移动目标在目前的参考图像中的坐标,以获得第二移动方向;以及依据第一移动方向与第二移动方向的夹角而预测移动目标的移动方向。In an embodiment of the operation method of the monitoring system, the method for predicting the moving direction of the moving object includes: subtracting the coordinates of the moving object in the previous reference image from the coordinates of the moving object in the previous first image, obtaining the first moving direction; subtracting the coordinates of the moving target in the current reference image from the coordinates of the moving target in the current first image to obtain a second moving direction; and according to the first moving direction and the second moving direction to predict the moving direction of the moving target.
另一种本发明所提出的监视系统的操作方法中,所操作的监视系统包括多个固定式摄影机、图像处理单元以及储存单元。此监视系统的操作方法包括:由固定式摄影机对待监视区进行拍摄以产生多个第一图像;由图像处理单元接收第一图像,并对第一图像进行图像处理以确认是否存在任何移动目标;以及当图像处理单元确认存在至少一移动目标时,图像处理单元预测移动目标的移动方向,并依预测结果而控制储存单元连续储存第一图像中存在移动目标者。In another method of operating a monitoring system proposed by the present invention, the operating monitoring system includes a plurality of fixed cameras, an image processing unit, and a storage unit. The operation method of the monitoring system includes: shooting the area to be monitored by a fixed camera to generate a plurality of first images; receiving the first images by an image processing unit, and performing image processing on the first images to confirm whether there is any moving target; And when the image processing unit confirms that there is at least one moving object, the image processing unit predicts the moving direction of the moving object, and controls the storage unit to continuously store the moving object in the first image according to the prediction result.
在此监视系统的操作方法的一实施例中,所操作的监视系统还包括通讯单元。此监视系统的操作方法还包括当图像处理单元确认存在移动目标时,通讯单元通知安全人员。In an embodiment of the method for operating a monitoring system, the operating monitoring system further includes a communication unit. The operation method of the monitoring system further includes, when the image processing unit confirms that there is a moving object, the communication unit notifies the security personnel.
在此监视系统的操作方法的一实施例中,所操作的监视系统还包括通讯单元。此监视系统的操作方法还包括当图像处理单元预测移动目标的移动方向后,通讯单元通知安全人员移动目标的移动方向。In an embodiment of the method for operating a monitoring system, the operating monitoring system further includes a communication unit. The operation method of the monitoring system further includes that after the image processing unit predicts the moving direction of the moving object, the communication unit notifies the security personnel of the moving direction of the moving object.
在此监视系统的操作方法的一实施例中,所操作的监视系统还包括至少一移动式摄影机。此监视系统的操作方法还包括当图像处理单元预测移动目标的移动方向后,依预测结果而指示移动式摄影机前往监视。另外,当移动式摄影机前往监视移动目标而产生第二图像时,储存单元可储存第二图像。此外,所操作的监视系统可还包括显示器,而此监视系统的操作方法还包括由显示器显示第二图像。In an embodiment of the monitoring system operating method, the operating monitoring system further includes at least one mobile camera. The operation method of the monitoring system further includes instructing the mobile camera to monitor according to the prediction result after the image processing unit predicts the moving direction of the moving object. In addition, when the mobile camera goes to monitor the moving target and generates the second image, the storage unit can store the second image. In addition, the operating monitoring system may further include a display, and the operating method of the monitoring system further includes displaying the second image by the display.
在此监视系统的操作方法的一实施例中,还包括当图像处理单元确认存在移动目标时,储存单元记录当时的时间。In an embodiment of the operation method of the monitoring system, the storage unit records the current time when the image processing unit confirms that there is a moving object.
在此监视系统的操作方法的一实施例中,所操作的监视系统还包括显示器,而此监视系统的操作方法还包括由显示器显示至少一个第一图像。In an embodiment of the monitoring system operating method, the operating monitoring system further includes a display, and the monitoring system operating method further includes displaying at least one first image by the display.
在此监视系统的操作方法的一实施例中,还包括当图像处理单元确认存在移动目标时,固定式摄影机由正常模式进入警戒模式。警戒模式中固定式摄影机的分辨率、更新频率与灵敏度至少其中之一高于正常模式。In an embodiment of the operation method of the surveillance system, the fixed camera enters the alert mode from the normal mode when the image processing unit confirms that there is a moving object. At least one of the resolution, update frequency, and sensitivity of the fixed camera in the alert mode is higher than that in the normal mode.
在此监视系统的操作方法的一实施例中,确认是否存在任何移动目标的方法包括:将目前的第一图像与参考图像做比较,以计算第一图像的像素相较于参考图像的像素发生改变的数量;当像素发生改变的数量小于默认值时,储存目前的第一图像作为参考图像;当像素发生改变的数量大于默认值时,设定第一图像中存在准移动目标,并计算准移动目标的面积;当面积小于默认值时,储存目前的第一图像作为参考图像;以及当面积大于默认值时,确认准移动目标为移动目标。In one embodiment of the method of operating the surveillance system, the method for determining whether there is any moving object includes: comparing the current first image with the reference image to calculate the occurrence of pixels in the first image compared to pixels in the reference image The number of changes; when the number of pixels changed is less than the default value, store the current first image as a reference image; when the number of pixels changed is greater than the default value, set the quasi-moving target in the first image, and calculate the The area of the moving target; when the area is smaller than the default value, the current first image is stored as the reference image; and when the area is larger than the default value, the quasi-moving target is confirmed as the moving target.
在此监视系统的操作方法的一实施例中,预测移动目标的移动方向的方法包括:将移动目标在前次的第一图像中的坐标减去移动目标在前次的参考图像中的坐标,以获得第一移动方向;将移动目标在目前的第一图像中的坐标减去移动目标在目前的参考图像中的坐标,以获得第二移动方向;以及依据第一移动方向与第二移动方向的夹角而预测移动目标的移动方向。In an embodiment of the operation method of the monitoring system, the method for predicting the moving direction of the moving object includes: subtracting the coordinates of the moving object in the previous reference image from the coordinates of the moving object in the previous first image, obtaining the first moving direction; subtracting the coordinates of the moving target in the current reference image from the coordinates of the moving target in the current first image to obtain a second moving direction; and according to the first moving direction and the second moving direction to predict the moving direction of the moving target.
综上所述,在本发明的监视系统及其操作方法中,可通过机器判断是否有移动目标出现并预测移动目标的移动方向,以提高监视成效。此外,可通过采用移动式摄影机而消除摄影死角。To sum up, in the monitoring system and its operating method of the present invention, the machine can judge whether there is a moving object and predict the moving direction of the moving object, so as to improve the monitoring effect. In addition, camera blind spots can be eliminated by employing mobile cameras.
为让本发明的上述和其它目的、特征和优点能更明显易懂,下文特举较佳实施例,并配合所附图式,作详细说明如下。In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments will be described in detail below together with the accompanying drawings.
附图说明 Description of drawings
图1为本发明一实施例的监视系统的示意图。FIG. 1 is a schematic diagram of a monitoring system according to an embodiment of the present invention.
图2绘示为图1的监视系统的布局示意图。FIG. 2 is a schematic layout diagram of the monitoring system in FIG. 1 .
图3为本发明一实施例的监视系统的操作方法。FIG. 3 is an operation method of the monitoring system according to an embodiment of the present invention.
图4是说明本发明一实施例的监视系统的操作方法中,确认是否存在任何移动目标的流程图。FIG. 4 is a flow chart illustrating whether there is any moving object in the operation method of the surveillance system according to an embodiment of the present invention.
[主要元件标号说明][Description of main component labels]
1000:监视系统1000: Surveillance system
100:待监视区100: Area to be monitored
101-109:子区域102-109101-109: sub-area 102-109
201-209:固定式摄影机201-209: Fixed cameras
310:图像处理单元310: Image processing unit
320:通讯单元320: communication unit
330:储存单元330: storage unit
340:显示器340: display
500:移动式摄影机500: Mobile Camera
A:移动目标A: moving target
P:移动路径P: moving path
S110-A160、S210-S250、S225:步骤S110-A160, S210-S250, S225: steps
具体实施方式 Detailed ways
图1为本发明一实施例的监视系统的示意图,而图2绘示为图1的监视系统的布局示意图。请参照图1与图2,本实施例的监视系统1000包括至少一个固定式摄影机、一个图像处理单元310以及一个移动式摄影机500。在图1中绘示三个固定式摄影机201-203,而图2中则绘示九个固定式摄影机201-209,固定式摄影机的数量可视需求而增减。当然,移动式摄影机500的数量也可视需求而增加。FIG. 1 is a schematic diagram of a monitoring system according to an embodiment of the present invention, and FIG. 2 is a schematic layout diagram of the monitoring system in FIG. 1 . Referring to FIG. 1 and FIG. 2 , the
本实施例中,固定式摄影机201-209通过信号线与图像处理单元310通联,以于两者之间传输信号。但是,固定式摄影机201-209也可以无线方式与图像处理单元310通联。此外,本实施例的移动式摄影机500以无线方式与图像处理单元310通联。若环境条件许可,移动式摄影机500也可通过信号线与图像处理单元310通联。有必要时,移动式摄影机500与固定式摄影机201-209之间以有线或无线的方式互相通联。In this embodiment, the fixed cameras 201-209 communicate with the
当监视系统1000布置于待监视区100以监视区域内的状况时,待监视区100例如划分为9个子区域102-109,而各子区域102-109中例如都配置一个固定式摄影机202-209,固定式摄影机201则布置于待监视区100的入口处。在此,固定式摄影机201-209虽然被以「固定式」形容,但固定式摄影机201-209也可选择性地被设计为具有旋转功能。When the
图3为本发明一实施例的监视系统的操作方法。请参照图1与图3,本实施例的操作方法所操作的监视系统例如是图1的监视系统1000。在本实施例中,固定式摄影机201-209对待监视区100进行拍摄,以分别产生第一图像,如步骤S110。接着,图像处理单元310以有线或无线的方式接收这些第一图像,并对这些第一图像进行图像处理,如步骤S120。然后,图像处理单元310依据图像处理的结果而判断这些第一图像中是否存在任何移动目标,如步骤S130。当图像处理单元310确认这些第一图像中存在至少一个移动目标时,图像处理单元310即预测移动目标的移动方向并指示移动式摄影机500前往监视,如步骤S140。FIG. 3 is an operation method of the monitoring system according to an embodiment of the present invention. Referring to FIG. 1 and FIG. 3 , the monitoring system operated by the operation method of this embodiment is, for example, the
在上述实施例的监视系统1000及其操作方法中,由于是以图像处理单元310判断是否有移动目标出现,因此不需靠人工来持续监视并判读图像,可避免安全人员因疲劳而未注意到危安事件的发生,进而提升监视系统的效能。此外,由于移动式摄影机500可依图像处理单元310的指示而跟踪移动目标,因此可消除只采用固定式摄影机201-209时可能存在的摄影死角。应注意的是,图像处理单元310所能处理的移动目标的数量是依其硬设备的计算能力而决定,并不仅限于只能处理单一移动目标。In the
请再参照图1与图3,监视系统1000还可还包括通讯单元320,其电性连接图像处理单元310。因此,在图像处理单元310确认存在移动目标时,除了可指示移动式摄影机500前往监视外(如步骤S140),还可通过通讯单元320通知安全人员(如步骤S150)。如此一来,还可通过安全人员的处理而充分掌握移动目标的状况,包括移动目标的预测移动方向。此处所指的安全人员除了一般保安公司的保安人员外,也可以是警察人员。另外,通讯单元320可采用有线或无线的方式发送通知消息,而消息的形式可以是电子邮件、电话、短消息或任何适当形式。再者,即使监视系统1000没有配备通讯单元320,也可在存在移动目标后,以适当的声光效果引起四周人员的注意,并对入侵者产生吓阻的效果。Please refer to FIG. 1 and FIG. 3 again, the
请继续参照图1与图3,监视系统1000还可还包括储存单元330,其与固定式摄影机201-203及移动式摄影机500通联。在图像处理单元310确认存在移动目标时,即可将第一图像储存于储存单元330内,如步骤S160。其中,储存单元330可选择性地采用硬盘,其容量相较于传统录像带大了许多,可降低因容量不足而错失重要画面的机率。或者,若不考虑储存容量的问题,储存单元330也为一般的录像机与录像带。当然,储存单元330也可用于储存移动式摄影机500拍摄所得的第二图像。Please continue to refer to FIG. 1 and FIG. 3 , the
值得一提的是,即使监视系统1000中不配置移动式摄影机500,能够预测移动目标的移动方向的图像处理单元310依然可发挥作用。具体而言,在步骤S160中,储存单元330有可能是储存所有第一图像。但若要节约使用储存单元330的储存空间,可由图像处理单元310依据所预测的移动目标的移动方向而控制储存单元330仅连续储存各第一图像中存在移动目标者。若以图2为例,即图像处理单元310可控制储存单元330仅连续储存固定式摄影机201、202、203、206与204所拍摄到具有移动目标的第一图像,而不储存其余固定式摄影机205、207、208与209所拍摄的没有移动目标的第一图像。It is worth mentioning that even if the
另外,储存单元330也可全程录制第一图像与第二图像,并在图像处理单元310确认存在移动目标时标记事件发生的时间点,以缩短后续调阅画面所需的时间,进而争取处理事件的黄金时间。再者,毕竟储存单元330仍有限制,因此在没有移动目标出现前,固定式摄影机201-209可以正常模式产生第一图像,而在确认存在移动目标后则由正常模式进入警戒模式。其中,固定式摄影机201-209在正常模式时的分辨率、更新频率、灵敏度或其它拍摄参数可设定为低于警戒模式,藉此节省储存第一图像所需的容量。当然,移动式摄影机500也可依此原则分为正常模式与警戒模式。即使图像处理单元310确认存在移动目标了,也可依据图像处理单元310所预测移动目标的移动方向,而仅将位于相关区域的固定式摄影机201-209与移动式摄影机500由正常模式调为警戒模式。In addition, the
在一实施例中,监视系统1000还可还包括显示器340,其与固定式摄影机201-209通联或电性连接图像处理单元310,以显示第一图像。另外,显示器340也可与移动式摄影机500通联或经由图像处理单元310而显示第二图像。因此,即使图像处理单元310对于图像的判断有误,仍可由安全人员通过显示器而掌握情况。In an embodiment, the
请参照图1与图2,假设移动目标A经由待监视区100的入口处进入待监视区100,固定式摄影机201将首先获得具有移动目标A的第一图像。当固定式摄影机201所摄得的第一图像传送至图像处理单元310而被判定存在移动目标A时,图像处理单元310可依连续获得的第一图像而一步一步推测出移动目标A的移动路径P。因此,图像处理单元310可依序指示固定式摄影机201、202、203、206与204由正常模式进入警戒模式,并同时指示移动式摄影机500前往移动目标A的下个位置进行监视。由于图像处理单元310是预测移动目标A的移动方向而非仅获得移动目标A的当前位置,因此不会在移动式摄影机500或安全人员前往移动目标A的当前位置后才发现移动目标A已到达下个位置,而造成无法取得移动目标A的图像的问题。Referring to FIG. 1 and FIG. 2 , assuming that a moving object A enters the area to be monitored 100 through the entrance of the area to be monitored 100 , the fixed
图4是说明本发明一实施例的监视系统的操作方法中,确认是否存在任何移动目标的流程图。请参照图4,在图像处理单元获得目前的第一图像后,会将第一图像与参考图像做比较,以计算第一图像的像素相较于参考图像的像素发生改变的数量,如步骤S210。其中,参考图像即前一时刻的第一图像。接着,判断像素发生改变的数量是否大于默认值,如步骤S220。若像素发生改变的数量小于默认值时,即表示目前的第一图像与前一个第一图像的差异不大,而判断不存在任何移动目标。同时,图像处理单元会将目前的第一图像储存为参考图像,如步骤S225。反之,若像素发生改变的数量大于默认值时,即表示目前的第一图像与前一个第一图像的差异较大,而判断可能存在移动目标。此时,可利用型态学后处理以及区块(blob)分析而设定第一图像中存在准移动目标,同时计算准移动目标的面积,如步骤S230。之后,判断准移动目标的面积是否大于默认值,如步骤S240。当面积小于默认值时,即表示可能仍不存在任何移动目标,而图像处理单元会将目前的第一图像储存为参考图像,如步骤S225。反之,若准移动目标的面积大于默认值时,即可确认准移动目标为移动目标,如步骤S250,并依前述实施例而进行如图3的步骤S140~S160。FIG. 4 is a flow chart illustrating whether there is any moving object in the operation method of the surveillance system according to an embodiment of the present invention. Please refer to FIG. 4, after the image processing unit obtains the current first image, it will compare the first image with the reference image to calculate the number of changes in the pixels of the first image compared with the pixels of the reference image, as in step S210 . Wherein, the reference image is the first image at the previous moment. Next, determine whether the number of pixels changed is greater than a default value, as in step S220. If the number of pixels changed is less than the default value, it means that there is not much difference between the current first image and the previous first image, and it is determined that there is no moving object. At the same time, the image processing unit stores the current first image as a reference image, as in step S225. Conversely, if the number of pixels changed is greater than the default value, it means that the difference between the current first image and the previous first image is large, and it is determined that there may be a moving target. At this time, the quasi-moving object can be set in the first image by using the post-processing of morphology and blob analysis, and the area of the quasi-moving object can be calculated at the same time, as in step S230. Afterwards, it is judged whether the area of the quasi-moving object is greater than a default value, as in step S240. When the area is smaller than the default value, it means that there may not be any moving object, and the image processing unit will store the current first image as a reference image, as in step S225. On the contrary, if the area of the quasi-moving object is greater than the default value, the quasi-moving object can be confirmed as the moving object, as in step S250, and steps S140-S160 shown in FIG. 3 are performed according to the aforementioned embodiment.
在前述监视系统的操作方法的一实施例中,预测移动目标的移动方向的方法包括:计算出移动目标在前次的第一图像中的坐标以及在前次的参考图像中的坐标并将两者相减,以获得移动目标在前一段时间中的第一移动方向;接着,计算出移动目标在目前的第一图像中的坐标以及在目前的参考图像中的坐标并将两者相减,以获得移动目标在当前时间中的第二移动方向;最后,即可依据第一移动方向与第二移动方向的夹角而预测移动目标在下一段时间可能的移动方向。In an embodiment of the operation method of the aforementioned monitoring system, the method for predicting the moving direction of the moving object includes: calculating the coordinates of the moving object in the previous first image and the coordinates in the previous reference image and combining the two or subtracted to obtain the first moving direction of the moving target in the previous period of time; then, calculate the coordinates of the moving target in the current first image and the coordinates in the current reference image and subtract the two, The second moving direction of the moving object at the current time is obtained; finally, the possible moving direction of the moving object in the next period of time can be predicted according to the angle between the first moving direction and the second moving direction.
综上所述,在本发明的监视系统及其操作方法中,由于以图像处理单元取代人工判断是否有移动目标出现,因此可提升监视系统的效能并节省人力。此外,移动式摄影机可消除可能存在的摄影死角并主动跟踪移动目标。另外,通讯单元可通知安全人员第一时间前往处理,并通过图像处理单元而预知移动目标的下个位置而有效拦截。再者,可将正常模式下的图像质量降低,以节省储存图像所需的容量。此外,还可标记事件发生的时间,以利后续能够快速调阅出关键的画面。另外,依据图像处理单元所预测移动目标的移动方向而进行图像储存,可节省储存单元的储存空间的使用量。To sum up, in the monitoring system and its operating method of the present invention, since the image processing unit is used instead of manually determining whether there is a moving object, the performance of the monitoring system can be improved and manpower can be saved. Additionally, the mobile camera eliminates possible blind spots and actively tracks moving targets. In addition, the communication unit can notify the security personnel to deal with it at the first time, and the image processing unit can predict the next position of the moving target and effectively intercept it. Furthermore, the image quality in the normal mode can be reduced to save the capacity required for storing images. In addition, the time when the event occurred can also be marked, so that the key screen can be quickly retrieved later. In addition, storing the image according to the moving direction of the moving object predicted by the image processing unit can save the usage of the storage space of the storage unit.
虽然本发明已以较佳实施例揭露如上,然其并非用以限定本发明,任何所属技术领域中具有通常知识者,在不脱离本发明的精神和范围内,当可作些许的更动与润饰,因此本发明的保护范围当视所附的权利要求范围所界定者为准。Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field may make some modifications and changes without departing from the spirit and scope of the present invention. Modification, therefore, the scope of protection of the present invention should be defined by the scope of the appended claims.
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