CN106470306B - Synchronous zoom system - Google Patents
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- CN106470306B CN106470306B CN201510505709.1A CN201510505709A CN106470306B CN 106470306 B CN106470306 B CN 106470306B CN 201510505709 A CN201510505709 A CN 201510505709A CN 106470306 B CN106470306 B CN 106470306B
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Abstract
The invention provides a synchronous zooming system, which comprises controllable zoom lenses, a zooming driving device, a rotating driving device and a controller, wherein the controllable zoom lenses are connected with the rotating device, the zooming driving device is connected with a plurality of the controllable zoom lenses, the rotating driving device is connected with the plurality of the rotating devices, the controller is connected with the synchronizing device and the rotating driving device, the synchronous zooming driving device sets the focal lengths of the plurality of the controllable zoom lenses according to a first control signal, the rotating driving device controls a plurality of motors to rotate according to a second control signal, and the controller generates the second control signal according to the focal length set by the first control signal. According to the synchronous zooming system provided by the invention, the focal lengths of the controllable zoom lenses are synchronously set, and the rotating angle and direction of the rotating device are controlled according to the focal lengths, so that the problem of synchronous zooming of the cameras is solved.
Description
Technical Field
The invention relates to the field of computer image processing systems, in particular to a synchronous zooming system.
Background
With the development of electronic information technology, devices capable of recording and acquiring real-time video information are becoming popular, but compared with human eyes, the monitoring range and angle of a single camera are relatively limited. Wide-angle cameras are difficult to use in a wide range due to their expensive price.
Aiming at the problem, at present, in security monitoring, a plurality of cameras are often used for monitoring, and images shot by the plurality of cameras are spliced to obtain a monitoring image with a wide angle and a large picture.
In the utility model patent file with patent number CN201420820069, a supervisory equipment with a plurality of cameras is disclosed, and it has a plurality of IP cameras to integrate, and each IP camera cooperates each other and forms a wide angle surveillance camera, is connected and splices into surveillance video real-time output with the image of adjacent IP camera collection through data transmission device and each IP camera. The monitoring equipment is used for monitoring in the security field, is used for solving the problem that the monitoring range of a single camera is too small, improves the monitoring range and avoids monitoring dead angles.
However, in the above-described technical solutions, the synchronous zoom device is lacking. When the monitoring range of the cameras needs to be adjusted, the focal length and the mounting position of the lens of each camera can be manually adjusted, and the requirement of image splicing is met through multiple times of adjustment. In some cases, some misoperation may damage the overlapping area of the acquired images, thereby causing the monitoring images to be unable to be spliced.
Disclosure of Invention
The present invention provides a synchronous zoom system to solve the above problems.
According to the present invention, there is provided a synchronous zoom system comprising a controllable zoom lens, a zoom driving device, a rotating device, a rotation driving device and a controller, wherein the controllable zoom lens is connected to the rotating device, the zoom driving device is connected to a plurality of the controllable zoom lenses, the rotation driving device is connected to a plurality of the rotating devices, the controller is connected to the synchronizing device and the rotation driving device,
the synchronous zooming driving device sets the focal lengths of the controllable zoom lenses according to a first control signal, the rotation driving device controls the motors to rotate according to a second control signal, and the controller generates the second control signal according to the focal length set by the first control signal.
Preferably, when the focal length of the controllable zoom lens becomes larger, the plurality of rotating devices rotate inwards, so that the distance between the rotating devices is smaller; when the focal length of the plurality of controllable zoom lenses is reduced, the plurality of rotating devices rotate outwards, so that the distance between the rotating devices is larger.
Preferably, a plurality of the rotating devices are rotated so that the shooting ranges of the controllable zoom lenses have a predetermined overlapping area.
Preferably, the zoom driving means sends a first feedback signal to the controller after completion of zooming, and the rotation driving means sends a second feedback signal to the controller after completion of rotation of the rotation means.
Preferably, the controller suspends real-time image stitching before outputting the first control signal and the second control signal; and continuing to execute real-time image splicing after the first feedback signal and the second feedback information are received.
Preferably, the controllable zoom lens comprises a controllable zoom camera.
Preferably, the rotating means is a stepping motor that rotates the camera.
The invention provides a synchronous zooming system, which comprises controllable zoom lenses, a zooming driving device, a rotating driving device and a controller, wherein the controllable zoom lenses are connected with the rotating device, the zooming driving device is connected with a plurality of the controllable zoom lenses, the rotating driving device is connected with the plurality of the rotating devices, the controller is connected with the synchronizing device and the rotating driving device, the synchronous zooming driving device sets the focal lengths of the plurality of the controllable zoom lenses according to a first control signal, the rotating driving device controls a plurality of motors to rotate according to a second control signal, and the controller generates the second control signal according to the focal length set by the first control signal.
According to the synchronous zooming system provided by the embodiment of the invention, the focal lengths of the controllable zoom lenses are synchronously set, and the rotating angle and direction of the rotating device are controlled according to the focal lengths, so that the problem of synchronous zooming of the cameras is solved.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing embodiments of the present invention with reference to the following drawings, in which:
FIG. 1 is a schematic diagram of the relationship between the focal length and the photographing angle of a zoom lens;
fig. 2 is a structural diagram of a synchronous zoom system of an embodiment of the present invention;
fig. 3 is an exemplary view of a camera and a rotating electrical machine connection according to an embodiment of the present invention.
Detailed Description
The present invention will be described below based on examples, but the present invention is not limited to only these examples. In the following detailed description of the present invention, certain specific details are set forth. It will be apparent to one skilled in the art that the present invention may be practiced without these specific details. Well-known methods, procedures, and procedures have not been described in detail so as not to obscure the present invention. The figures are not necessarily drawn to scale.
The flowcharts and block diagrams in the figures and block diagrams illustrate the possible architectures, functions, and operations of the systems, methods, and apparatuses according to the embodiments of the present invention, and may represent a module, a program segment, or merely a code segment, which is an executable instruction for implementing a specified logical function. It should also be noted that the executable instructions that implement the specified logical functions may be recombined to create new modules and program segments. The blocks of the drawings, and the order of the blocks, are thus provided to better illustrate the processes and steps of the embodiments and should not be taken as limiting the invention itself.
The variable focal length lens referred to herein is also referred to as a variable focal length lens or a zoom lens. The zoom lens can change focal length within a certain range, thereby obtaining different wide and narrow field angles, images with different sizes and different scene ranges.
The image stitching referred to herein is stitching two or more images having a portion of overlap in an overlap region to obtain an image with a wide viewing angle or a large frame.
The zoom lens is divided into a manual zoom lens and an automatic zoom lens, and the shooting angle and the shooting range are changed by changing the focal length of objects at different distances. The relationship between the focal length and the shooting angle of the variable focal length lens is shown in fig. 1, and as the focal length increases, the shooting angle and the shooting range decrease, and the distance from which an object can be shot increases. Therefore, when shooting a long-distance object, the focal length is correspondingly adjusted to be larger, and conversely, when shooting a short-distance object, the focal length is correspondingly adjusted to be smaller. The variation relation between the focal length and the shooting angle is the application basis of the embodiment of the invention.
In one embodiment of the present invention as shown in fig. 2, the synchronous zoom system includes a controller 100, a zoom driving device 101, a rotation driving device 102, a controllable zoom lens 103 and 105, and a rotation device 106 and 108, the controllable zoom lens 103 and 105 are respectively connected to the rotation device 106 and 108, the zoom driving device 101 is connected to the controllable zoom lens 103 and 105, the rotation driving device 102 is connected to the rotation device 106 and 108, and the controller 100 is respectively connected to the zoom driving device 101 and the rotation driving device 102. The connection means herein generally refers to a wired connection and a wireless connection.
The controller 100 obtains a predetermined focal length according to a user instruction, generates a first control signal according to the focal length, generates a second control signal according to the focal length set by the first control signal, respectively sends the first control signal and the second control signal to the zoom driving device 101 and the rotation driving device 102, respectively sets the controllable zoom lens 103 and 105 to a specified focal length after the zoom driving device 101 receives the first control signal, and rotates the rotation device 106 and 108 and controls the rotation angle and the direction of the rotation motor after the rotation driving device 102 receives the second control signal.
The rotation devices 106 and 108 are all devices capable of controlling the controllable zoom lens to rotate. In a preferred embodiment, a motor is mounted at the bottom of the controllable zoom lens, and the rotation of the motor makes the lens rotate along with the motor. In another alternative embodiment, gears are used to rotate the lens.
Fig. 3 shows an example of a camera head and rotating motor connection. It can be seen that the three rotating motors 201 and 203 and the three cameras 301 and 303 are connected together, and a stepping motor capable of horizontally rotating the cameras is installed at the bottom of each camera. As described above, the larger the focal length of the camera is, the narrower the angle of the acquired monitoring image is, and the smaller the focal length is, the larger the angle of the acquired monitoring image is. When making three camera zoom simultaneously, if with the focus grow, then the step motor of both ends camera inwards the direction simultaneously is rotatory about should controlling, if diminish the focus, then the step motor of both ends camera outwards the direction is rotatory simultaneously about should controlling to this guarantees that the monitored control image that three camera gathered has the coincidence of predetermined angle, guarantees that the image can splice successfully.
The system in this embodiment determines the angle and direction that the rotation motor should rotate according to the focal length of the controllable zoom lens through the controller 100. For example, if the focal length of the three cameras shown in fig. 2 is 14mm, the angle 45 between the cameras will now be set to 50 mm. Assuming that the camera included angle at this focal length is 15 degrees, the camera focal length is set, and at the same time, the rotating motor of the middle camera is kept stationary, and the rotating motors under the left and right cameras are controlled to move horizontally inwards by 30 degrees. Of course, the camera rotating motor on the right side can be kept still, and the rotating motors of the middle camera and the left camera are controlled to rotate, so that the corresponding relation between the focal length of the cameras and the included angle of the rotating motors is met, and the monitored images collected by the three cameras are overlapped at a preset angle. In this case, the monitoring content acquired by the camera is also changed accordingly.
It should be understood by those skilled in the art that the three cameras of fig. 2 and 3 are only an exemplary illustration, and the number of cameras can be increased or decreased according to actual needs. For example, 5 cameras are used to capture the images in a circle, and the captured images are spliced into an image with a 360-degree viewing angle. Similarly, when the motor is used to control the three cameras to convert the shooting angles, the rotation mode and the angles of the motor should be selected according to actual needs.
In a preferred embodiment, the zoom driving means sends a first feedback signal to the controller after completion of zooming, and the rotation driving means sends a second feedback signal to the controller after completion of rotation of the rotation driving means. And after receiving the first feedback signal and the second feedback signal, the controller continues to execute image splicing. In the zooming implementation process, due to the interference of the zooming process, the collected monitoring image has too much noise or does not have the condition of image splicing, so that the real-time image splicing program is suspended before zooming, and after the relevant zooming is finished, the image splicing program is started again to continue image splicing.
The embodiment of the invention provides a synchronous zooming system, which comprises controllable zoom lenses, a zooming driving device, a rotating driving device and a controller, wherein the controllable zoom lenses are connected with the rotating device, the zooming driving device is connected with a plurality of the controllable zoom lenses, the rotating driving device is connected with a plurality of the rotating devices, the controller is connected with the synchronizing device and the rotating driving device, the synchronous zooming driving device sets the focal lengths of the controllable zoom lenses according to a first control signal, the rotating driving device controls a plurality of motors to rotate according to a second control signal, and the controller generates the second control signal according to the focal length set by the first control signal.
According to the synchronous zooming system provided by the embodiment of the invention, the focal lengths of the controllable zoom lenses are synchronously set, and the rotating angle and direction of the rotating device are controlled according to the focal lengths, so that the problem of synchronous zooming of the cameras is solved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. For example, in practical applications, the zoom driving device and the motor driving device may be disposed in the apparatus, or the zoom driving device and the motor driving device may be further decomposed into different functional structures. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. The controller, the zoom driving device, the motor driving device and the like in the present invention may be implemented by hardware, or may be implemented by software, hardware or software.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A synchronous zooming system comprises a controllable zoom lens, a zooming driving device, a rotating driving device and a controller, wherein the controllable zoom lens is connected with the rotating device, the zooming driving device is connected with a plurality of the controllable zoom lenses, the rotating driving device is connected with a plurality of the rotating devices, the controller is connected with the zooming driving device and the rotating driving device,
the controller generates a first control signal according to the focal length set by the first control signal, and the controller generates a second control signal according to the focal length set by the first control signal;
the controller (100) acquires a preset focal length according to a user instruction, generates a first control signal according to the focal length, generates a second control signal according to the focal length set by the first control signal, respectively sends the first control signal and the second control signal to the zoom driving device (101) and the rotation driving device (102), the zoom driving device (101) respectively sets the specified focal length of the controllable zoom lens (103) and the zoom lens (105) after receiving the first control signal, and the rotation driving device (102) rotates the rotation device (106 and the rotation device (108) after receiving the second control signal, and controls the rotation angle and the direction of the rotation device;
when the focal length of the controllable zoom lens is increased, the plurality of rotating devices rotate inwards, so that the distance between the rotating devices is smaller; when the focal lengths of the plurality of the controllable zoom lenses are reduced, the plurality of the rotating devices rotate outwards, so that the distance between the rotating devices is larger;
and the shooting ranges of the controllable zoom lenses have a preset overlapping area through the rotation of the plurality of rotating devices.
2. The synchronous zoom system of claim 1, wherein the zoom driving means sends a first feedback signal to the controller after completion of zooming, and the rotation driving means sends a second feedback signal to the controller after completion of rotation of the rotation means.
3. The synchronous zoom system of claim 2, wherein the controller pauses real-time image stitching before outputting the first and second control signals; and after receiving the first feedback signal and the second feedback signal, continuously executing real-time image splicing.
4. The synchronized zoom system of claim 1, wherein the controllable zoom lens comprises a controllable zoom camera.
5. The synchronous zoom system of claim 4, wherein the rotating means is a stepper motor that rotates the camera head.
6. The synchronized zoom system of claim 4, wherein the rotating means is a gear that rotates the camera head.
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| CN201510505709.1A CN106470306B (en) | 2015-08-17 | 2015-08-17 | Synchronous zoom system |
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| CN201510505709.1A CN106470306B (en) | 2015-08-17 | 2015-08-17 | Synchronous zoom system |
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| CN108833746B (en) * | 2018-05-29 | 2021-03-12 | Oppo（重庆）智能科技有限公司 | Camera shooting assembly and electronic equipment |
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| US8890887B2 (en) * | 2011-09-30 | 2014-11-18 | Olympus Corporation | Synchronized image browsing |
| CN102523472B (en) * | 2011-12-14 | 2014-04-02 | 天津大学 | Self-rotary scaffolding convergent multi-view three-dimensional data collection system and method |
| CN102495520A (en) * | 2011-12-14 | 2012-06-13 | 天津大学 | Self-convergence type multi-viewpoint three-dimensional data acquisition system and method |
| CN103197498B (en) * | 2013-03-11 | 2015-06-17 | 哈尔滨工程大学 | Panoramic vision system with synchronous shot parameter adjusting function |
| CN103149788A (en) * | 2013-03-22 | 2013-06-12 | 天津曙光敬业科技有限公司 | Air 360-degree distant view photograph shooting device and method |
| US9374514B2 (en) * | 2013-10-18 | 2016-06-21 | The Lightco Inc. | Methods and apparatus relating to a camera including multiple optical chains |
| CN103618881A (en) * | 2013-12-10 | 2014-03-05 | 深圳英飞拓科技股份有限公司 | Multi-lens panoramic stitching control method and multi-lens panoramic stitching control device |
| CN204334815U (en) * | 2014-12-23 | 2015-05-13 | 北京亿羽舜海科技有限公司 | The wide-angle video watch-dog of multiple IP camera |
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| WO2009087542A3 (en) * | 2007-12-31 | 2009-09-03 | On-Laser Systems & Applications, S. L. | Method and arrangement for rotational marking |
| JP2011200532A (en) * | 2010-03-26 | 2011-10-13 | Fujifilm Corp | Controller and control method of radiographic system |
| JP2014222348A (en) * | 2012-02-09 | 2014-11-27 | フリュー株式会社 | Photographic seal creation device |
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