CN101511004A - Method and apparatus for monitoring camera shot - Google Patents
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- CN101511004A CN101511004A CNA2009100806888A CN200910080688A CN101511004A CN 101511004 A CN101511004 A CN 101511004A CN A2009100806888 A CNA2009100806888 A CN A2009100806888A CN 200910080688 A CN200910080688 A CN 200910080688A CN 101511004 A CN101511004 A CN 101511004A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 36
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- 238000012806 monitoring device Methods 0.000 abstract 3
- 241000699666 Mus <mouse, genus> Species 0.000 description 48
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Abstract
The invention which discloses a video monitoring method is used for improving the effect of video monitoring and includes the steps that a monitoring device obtains global images captured by global cameras; the monitoring device captures the operations of a mouse on the global images and obtains area images captured by the mouse; the monitoring device confirms angles of local cameras according to the positions of the area images captured by the mouse on the global images; the local cameras rotate according to the confirmed angles and capture images when rotating to the confirmed angles. The invention also discloses a device and a system which are used for implementing the device.
Description
Technical field
The present invention relates to computer and image processing field, particularly relate to the method and the device of monitoring camera-shooting.
Background technology
Along with the development of Network Video Surveillance technology, video monitoring system has been applied in all trades and professions maturely." the supervision of the cities alarm network system " of for example video monitoring system of the carrier-class such as " wide visual fields " of " global eyes " of China Telecom and China Netcom, and each city etc.Follow the wide popularization and application of these video monitoring systems, video monitoring point has covered each main region image and the place in city.Wherein, the video monitoring point mainly is set in public, as places such as squares.
Present monitoring camera-shooting scheme mainly contains two kinds, and a kind of is to utilize local cameras to carry out the monitoring of taking turn formula.Local cameras has rotation and zoom function.Operating personnel control the anglec of rotation and the focal length of local cameras by four operating keys in upper and lower, left and right, thereby surrounding environment is monitored.Perhaps, a plurality of presetting bits prestore in local cameras, for example, presetting bit 1 comprises angle 1 and focal length 3, presetting bit 2 comprises angle 2 and focal length 3, operating personnel make local cameras according to monitoring that default a plurality of presetting bits circulate successively by selecting presetting bit 1 or presetting bit 2 by 1,2 keys, thereby realize the conduct monitoring at all levels to surrounding environment.Yet, when local camera is monitored according to each presetting bit, can't monitor, and may have the monitoring dead angle other orientation.Obviously exist in monitor procedure and omit, effect is undesirable.
Another kind is to utilize overall camera to carry out global monitoring.Overall situation camera has the overall function for monitoring of 360 degree, do not need rotation or move, but its focal length fixes, and therefore can't amplify supervision at certain part, and promptly monitored picture is clear inadequately, can't realize tracing and monitoring.
Summary of the invention
The embodiment of the invention provides a kind of method and device of monitoring camera-shooting, is used to improve the effect of monitoring camera-shooting.
A kind of method of monitoring camera-shooting may further comprise the steps:
Supervising device obtains the global image that overall camera captures;
Supervising device captures the operation of mouse on global image, and obtains the area image that mouse is caught;
Supervising device is caught the position of area image in global image of catching according to mouse, determines the angle of local cameras;
Local cameras is rotated according to the angle of determining, and carries out image and catch when rotating to definite angle.
A kind of supervising device that is used for monitoring camera-shooting comprises:
First camera interface is used to obtain global image;
Second camera interface is used to obtain topography;
User interface is used to capture the operation of mouse on global image, thereby obtains the area image that mouse is caught;
Analysis module, be used for the position of the center of the area image of catching at global image according to mouse, determine the angle of local cameras, and generate and to be used to the message of indicating local cameras to rotate to definite angle and catching image, and this message is transferred to local cameras by second camera interface.
A kind of system that is used for monitoring camera-shooting comprises:
Overall situation camera is used to catch global image;
Local cameras is used to catch topography;
Supervising device, be used to obtain global image and topography, and catch the operation of mouse on global image, thereby obtain the area image that mouse is caught, and the position of center in global image of the area image of catching according to mouse, determine the angle of local cameras, the indication local cameras rotates to definite angle and catches image.
The embodiment of the invention captures global image by overall camera, obtain the area image that mouse is caught by the operation of mouse on global image, the area image that local cameras is caught mouse carries out image and catches, especially bust shot, realize the tracking shooting of key area image, and can monitor global context simultaneously.And be angle and the focal length of determining local cameras with respect to the position and the area of global image by the area image that automatic analysis mouse is caught, make definite angle of the automatic basis of local cameras and focal length carry out image and catch, simplified manual operation.
Description of drawings
Fig. 1 is the primary structure figure of system in the embodiment of the invention;
Fig. 2 is the detailed structure view of system in the embodiment of the invention;
Fig. 3 is the structure chart of supervising device in the embodiment of the invention;
Fig. 4 is the main method flow chart of monitoring camera-shooting in the embodiment of the invention;
Fig. 5 in the embodiment of the invention when mouse carries out clicking operation on global image, the method flow diagram of monitoring camera-shooting;
Fig. 6 in the embodiment of the invention when mouse carries out drag operation on global image, the method flow diagram of monitoring camera-shooting.
Embodiment
The embodiment of the invention captures global image by overall camera, obtain the area image that mouse is caught by the operation of mouse on global image, the area image that local cameras is caught mouse carries out image and catches, especially bust shot, realize the tracking shooting of key area image, and can monitor global context simultaneously.
Overall camera in the embodiment of the invention can photograph 360 degree images, can realize conduct monitoring at all levels by the image that overall camera photographs.Local cameras comprises The Cloud Terrace, rotary zoom.
Referring to Fig. 1, the system that is used for monitoring camera-shooting in the present embodiment comprises overall camera 101, local cameras 102 and supervising device 103.
Wherein, the image that overall situation camera 101 and local cameras 102 photograph is an analog image, what supervising device 103 received is digital picture, overall situation camera 101 and local cameras 102 can have analog-digital conversion function, if overall camera 101 and local cameras 102 are not had an analog-digital conversion function, then this system also comprises: conversion equipment 104, and referring to shown in Figure 2.Conversion equipment 102 is used for the overall analog image that overall camera 101 is caught is converted to overall digital picture and is transferred to supervising device 103, and be the local digital image with the partial simulation image transitions that local cameras 102 is caught and be transferred to supervising device 104 that being used to of also supervising device 103 being generated indicates local cameras to rotate to definite angle and the message of catching image sends to local cameras 102.
Referring to Fig. 3, supervising device comprises first camera interface 301, second camera interface 302, user interface 303 and analysis module 304 in the present embodiment.
The angle submodule is used for the position of the center of the area image of catching according to mouse at global image, determine the angle of local cameras 102, and generate and to be used to the message of indicating local cameras to rotate to definite angle and catching image, and this message is transferred to local cameras 102 by second camera interface 302.
The focal length submodule is used for the area ratio of the area image of catching according to mouse and global image, determine the focal length of local cameras, and generation comprises the message of definite focal length, this message is sent to local cameras 102 by second camera interface 302, make local cameras 102 adjust to definite focal length automatically and catch image.The area image that the focal length submodule specifically is used for catching according to mouse determines that with the area ratio of global image this area is than affiliated ratio range, according to the ratio range of determining and the ratio range of presetting and the corresponding relation of focal length, determine the focal length of local cameras, and generation comprises the message of definite focal length, this message is sent to local cameras 102 by second camera interface 302, make local cameras 102 adjust to definite focal length automatically and catch image.
The length-width ratio of the rectangular area image that common mouse captures may be bigger or less, the direct focal length possibility that obtains according to the area of this rectangular area image is improper, therefore the topography that obtains is undesirable, so in order to determine focal length more accurately, the focal length submodule is when the length of the rectangular area image that mouse captures and wide when unequal, with the length on long and wide short-and-medium one side as the length of side, as geometric center, in the image of rectangular area, obtain the square region area image with the geometric center of rectangular area image; According to the area ratio of the square region area image that obtains with global image, determine the focal length of local cameras, and generate the message comprise definite focal length, and this message is sent to local cameras by second camera interface, make local cameras adjust to definite focal length automatically and catch image.
In addition, be used for user interface 303 and comprise display screen, can in a display screen, export global image and topography respectively, be convenient to the monitor staff and monitor with two forms.Perhaps, be used for user interface 303 and export global image and topography respectively, can obtain than distinct image by a plurality of display screens.The monitor staff can carry out mouse action on display screen.If display screen is a touch-screen, then on touch-screen drag or clicking operation is equivalent to mouse action.
Introduce described system and supervising device below in detail and realize the process of monitoring camera-shooting.
Referring to Fig. 4, the main method flow process of monitoring camera-shooting is as follows in the present embodiment:
Step 401: capture global image by overall camera.
Step 402:, obtain the area image that mouse is caught by the operation of mouse on global image.
Step 403: the position of center in global image of the area image of catching according to mouse, determine the angle of local cameras.
Step 404: local cameras rotates to definite angle and catches image.
In step 402, the operation of mouse on global image may be clicking operation, also may be drag operation, and then the area image of Huo Deing may be a rectangle, also may be point (i.e. pixel).Therefore, in the concrete processing procedure of monitoring camera-shooting, the follow-up flow process that two kinds of mouse actions bring is slightly different, describes respectively at both of these case below.
Referring to Fig. 5, when mouse carried out clicking operation on global image, the method flow of monitoring camera-shooting was as follows:
Step 501: supervising device 103 obtains the global image that overall camera 101 is caught, and exports to the monitor staff.This global image presents a rectangle on display screen, from left to right represented the image of 0～360 degree.
Step 502: supervising device 103 captures the clicking operation of monitor staff on global image, thereby obtains a pixel.
Step 503: supervising device 103 is determined this position of pixel in global image, thereby determines the angle of this pixel.For example, this pixel is on 54 degree positions.Perhaps the disposal ability of supervising device 103 and display precision are higher, and this pixel may be on 32 minutes position of 54 degree.
Step 504: supervising device 103 determines that the angle of this pixel is the angle in the location parameter, and current focal length is the focal length in the location parameter, thereby determines location parameter.Current focal length can be the focal length of acquiescence, also can be the last focal length of determining.
Step 505: supervising device 103 generates the message that comprises location parameter, and this message is sent to local cameras 102.
Step 506: local cameras 102 is adjusted to the location parameter that carries in the message automatically according to the message of receiving, and catches image.
Perhaps, in step 504 and 505, supervising device 103 only carries angle in message, and then in step 506, local cameras 102 is adjusted to this angle automatically, and catches image with current focal length.
Referring to Fig. 6, when mouse carried out drag operation on global image, the method flow of monitoring camera-shooting was as follows:
Step 601: supervising device 103 obtains the global image that overall camera 101 is caught, and exports to the monitor staff.This global image presents a rectangle on display screen, from left to right represented the image of 0～360 degree.
Step 602: supervising device 103 captures the drag operation of monitor staff on global image, thereby obtains a rectangular area image, and this rectangular area image comprises a plurality of pixels.
Step 603: supervising device 103 is determined the central point and the area of this rectangular area image.The number of the pixel that this rectangular area image is included can be used as the area of rectangular area image.If central point is not a definite pixel, for example this rectangular area image comprises the pixel of 4 row, 5 row, then from the geometric figure angle, geometric center is between pixel (3,2) and pixel (3,3), in the present embodiment with in a plurality of pixels around the geometric center with (0,0) apart from the central point of the shortest pixel, as pixel (3,2) as the rectangular area image.
Step 604: supervising device 103 is determined the position of this central point in global image, thereby determines angle.
Step 605: supervising device 103 is determined the focal length of local cameras according to the area ratio of rectangular area image with global image.Concrete, the area image that supervising device 103 is caught according to mouse determines that with the area ratio of global image this area is than affiliated ratio range, according to the ratio range of determining and the ratio range of presetting and the corresponding relation of focal length, determine the focal length of local cameras again.The corresponding relation of ratio range and focal length can be joined and is shown in Table 1.
Step 606: supervising device 103 obtains location parameter according to angle of determining and focal length, and generates the message that comprises location parameter, and this message is sent to local cameras 102.
Step 607: local cameras 102 is adjusted to the location parameter that carries in the message automatically according to the message of receiving, and catches image.
Table 1
| Ratio range t | Focal length |
| 1:1≤t<1:10 | 1 |
| 1:10≤t<1:50 | 2 |
| 1:50≤t | 3 |
In the present embodiment, in order to obtain topography more clearly by local cameras 102, can make the focal length of the focal length of local cameras 102 greater than overall camera 101, especially the minimum value of the focal length of local cameras 102 is greater than the focal length of overall camera 101.
In order to obtain preferable focal length to capture image more accurately, need to obtain rectangular area more accurately, supervising device 103 is when the length of the rectangular area image that mouse captures and wide when unequal in the present embodiment, be that the rectangular area image is when being rectangle, this rectangular area image is carried out cutting, obtain the square region area image.That is, with the length on long and wide short-and-medium one side as the length of side, with the geometric center of rectangular area image as geometric center, acquisition square region area image in the image of rectangular area.According to the area ratio of the square region area image that obtains, determine the focal length of local cameras then with global image.
Be used to realize that the software of the embodiment of the invention can be stored in storage mediums such as floppy disk, hard disk, CD and flash memory.
The embodiment of the invention captures global image by overall camera, obtain the area image that mouse is caught by the operation of mouse on global image, the area image that local cameras is caught mouse carries out image and catches, especially bust shot, realize the tracking shooting of key area image, and can monitor global context simultaneously.And be angle and the focal length of determining local cameras with respect to the position and the area of global image by the area image that automatic analysis mouse is caught, make definite angle of the automatic basis of local cameras and focal length carry out image and catch, simplified manual operation.And the dissimilar area image that the embodiment of the invention is obtained at the clicking operation and the drag operation of mouse (promptly or face) provides corresponding processing procedure, is convenient to monitor staff's flexible operating.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (14)
1, a kind of method of monitoring camera-shooting is characterized in that, may further comprise the steps:
Supervising device obtains the global image that overall camera captures;
Supervising device captures the operation of mouse on global image, and obtains the area image that mouse is caught;
Supervising device is caught the position of area image in global image of catching according to mouse, determines the angle of local cameras;
Local cameras is rotated according to the angle of determining, and carries out image and catch when rotating to definite angle.
2, the method for claim 1 is characterized in that, also comprises step:
The area image of catching according to mouse and the area ratio of global image are determined the focal length of local cameras;
Local cameras is adjusted to definite focal length automatically and is caught image.
3, method as claimed in claim 2 is characterized in that, the area image of catching according to mouse comprises with the step of the area of global image than the focal length of definite local cameras:
Determine that with the area ratio of global image this area is than affiliated ratio range according to the area image that mouse is caught;
According to the ratio range of determining and the ratio range of presetting and the corresponding relation of focal length, determine the focal length of local cameras.
4, the method for claim 1 is characterized in that, mouse comprises the drag operation of mouse on global image in the operation on the global image, obtains to comprise the rectangular area image of a plurality of pixels; The center of the area image that mouse is caught is the geometric center of rectangle.
5, method as claimed in claim 4, it is characterized in that, when the length of the rectangular area image that mouse captures and wide when unequal, with the length on long and wide short-and-medium one side as the length of side, as geometric center, in the image of rectangular area, obtain the square region area image with the geometric center of rectangular area image;
According to the area ratio of the square region area image that obtains, determine the focal length of local cameras with global image;
Local cameras is adjusted to definite focal length automatically and is caught image.
6, the method for claim 1 is characterized in that, mouse comprises the clicking operation of mouse on global image in the operation on the global image, obtains to comprise the area image of a pixel; The center of the area image that mouse is caught is this pixel.
7, a kind of supervising device that is used for monitoring camera-shooting is characterized in that, comprising:
First camera interface is used to obtain global image;
Second camera interface is used to obtain topography;
User interface is used to capture the operation of mouse on global image, thereby obtains the area image that mouse is caught;
Analysis module, be used for the position of the center of the area image of catching at global image according to mouse, determine the angle of local cameras, and generate and to be used to the message of indicating local cameras to rotate to definite angle and catching image, and this message is transferred to local cameras by second camera interface.
8, device as claimed in claim 7 is characterized in that, analysis module comprises:
The focal length submodule, the area ratio that is used for the area image of catching and global image according to mouse, determine the focal length of local cameras, and generation comprises the message of definite focal length, this message is sent to local cameras by second camera interface, make local cameras adjust to definite focal length automatically and catch image.
9, device as claimed in claim 8, it is characterized in that, the area image that the focal length submodule is used for catching according to mouse determines that with the area ratio of global image this area is than affiliated ratio range, according to the ratio range of determining and the ratio range of presetting and the corresponding relation of focal length, determine the focal length of local cameras, and generation comprises the message of definite focal length, this message is sent to local cameras by second camera interface, make local cameras adjust to definite focal length automatically and catch image.
10, device as claimed in claim 7 is characterized in that, user interface captures the drag operation of mouse on global image, obtains to comprise the rectangular area image of a plurality of pixels; The center of the area image that mouse is caught is the geometric center of rectangle.
11, device as claimed in claim 10 is characterized in that, analysis module comprises:
The focal length submodule, be used for when the length of the rectangular area image that mouse captures and wide when unequal, with the length on long and wide short-and-medium one side as the length of side, with the geometric center of rectangular area image as geometric center, acquisition square region area image in the image of rectangular area; According to the area ratio of the square region area image that obtains with global image, determine the focal length of local cameras, and generate the message comprise definite focal length, and this message is sent to local cameras by second camera interface, make local cameras adjust to definite focal length automatically and catch image.
12, device as claimed in claim 7 is characterized in that, user interface captures the clicking operation of mouse on global image, obtains to comprise the area image of a pixel; The center of the area image that mouse is caught is this pixel.
13, a kind of system that is used for monitoring camera-shooting is characterized in that, comprising:
Overall situation camera is used to catch global image;
Local cameras is used to catch topography;
Supervising device, be used to obtain global image and topography, and catch the operation of mouse on global image, thereby obtain the area image that mouse is caught, and the position of center in global image of the area image of catching according to mouse, determine the angle of local cameras, the indication local cameras rotates to definite angle and catches image.
14, system as claimed in claim 13 is characterized in that, also comprises:
Conversion equipment, be used for the overall analog image that overall camera is caught is converted to overall digital picture and is transferred to supervising device, and be the local digital image with the partial simulation image transitions that local cameras is caught and be transferred to supervising device that being used to of also supervising device being generated indicates local cameras to rotate to definite angle and the message of catching image sends to local cameras.
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| CN102902465A (en) * | 2011-07-27 | 2013-01-30 | 永泰软件有限公司 | Intelligent video control method |
| CN102917171A (en) * | 2012-10-22 | 2013-02-06 | 中国南方电网有限责任公司超高压输电公司广州局 | Small target locating method based on pixel |
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