CN111447368A - Free visual angle image acquisition system - Google Patents
Free visual angle image acquisition system Download PDFInfo
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- CN111447368A CN111447368A CN202010415769.5A CN202010415769A CN111447368A CN 111447368 A CN111447368 A CN 111447368A CN 202010415769 A CN202010415769 A CN 202010415769A CN 111447368 A CN111447368 A CN 111447368A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/66—Remote control of cameras or camera parts, e.g. by remote control devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/65—Control of camera operation in relation to power supply
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/04—Synchronising
- H04N5/06—Generation of synchronising signals
- H04N5/067—Arrangements or circuits at the transmitter end
- H04N5/073—Arrangements or circuits at the transmitter end for mutually locking plural sources of synchronising signals, e.g. studios or relay stations
- H04N5/0733—Arrangements or circuits at the transmitter end for mutually locking plural sources of synchronising signals, e.g. studios or relay stations for distributing synchronisation pulses to different TV cameras
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Abstract
A free-viewing angle image acquisition system. The method comprises the following steps: the system comprises a first camera, a second camera, … …, an N-1 th camera and an N-th camera, wherein the first camera is connected with the second camera, the second camera is connected with the third camera, and the like, and the N-1 th camera is connected with the N-th camera. The system further comprises: m switches and computers; each X cameras are respectively connected with a switch; and each switch is connected in sequence, and one switch is connected with the computer. The invention adopts the mode of audio interface electric signal synchronization to realize the shooting synchronization among all cameras; in addition, the computer configures the parameters of one camera, reads the parameters of the camera and writes the parameters into all other cameras. The system does not need to be additionally provided with a synchronous controller, so that the structure of the image acquisition system is simplified; and the parameter configuration of each camera does not need to be carried out manually, so that the workload of an operator is reduced, and the labor cost is saved.
Description
Technical Field
The invention belongs to the technical field of image acquisition, and particularly relates to a free visual angle image acquisition system.
Background
In a bullet time image capture system or a free-view image capture system, multiple cameras are usually used to capture images to generate special effect video. However, synchronization of shooting among a plurality of cameras and parameter configuration of the plurality of cameras are technical problems to be solved.
In the prior art, one scheme is to send shooting signals to multiple cameras respectively by using shooting software, perform trigger control on the multiple cameras to achieve synchronization of shooting, and perform working parameter setting on each camera respectively.
The other scheme is as follows: in the Sony free visual angle image shooting system, each camera is connected with a computer host through a corresponding synchronous controller, so that synchronous shooting of a plurality of camera machines in the shooting system is realized. The parameter configuration of each camera is performed individually.
In summary, in the existing free-view image acquisition system, the system controlled by software cannot realize the ultra-high precision synchronous shooting of a plurality of cameras, so that a plurality of paths of videos cannot be aligned. The additional addition of the synchronous controllers to control the synchronous shooting of the multiple cameras can synchronize the shooting with high precision, but multiple additional synchronous controllers are needed, and each camera needs to be configured with parameters respectively, so that the workload of parameter configuration is increased.
Disclosure of Invention
In the existing free visual angle image acquisition system, a system controlled by software cannot realize ultrahigh-precision synchronous shooting of a plurality of cameras, so that a plurality of paths of videos cannot be aligned; the additional addition of the synchronous controller to control the synchronous shooting of a plurality of cameras can synchronize the shooting with high precision, but the additional device synchronous controller is added, so that the system structure is complex. In both modes, each camera needs to be configured with parameters, and the workload of parameter configuration is increased. In order to solve the above problems, the present invention provides a free-viewing angle image acquisition system, which comprises the following specific schemes:
a freeview image acquisition system comprising: the camera comprises a first camera, a second camera, … …, an N-1 th camera and an N-th camera, wherein the first camera is connected with the second camera, the second camera is connected with the third camera, and the like, and the N-1 th camera is connected with the N-th camera.
Furthermore, the first camera, the second camera, the … …, the N-1 st camera and the Nth camera are all provided with audio input ports and audio output ports which are used as synchronous signal transmission ports; the audio output port of the first camera is connected with the audio input port of the second camera, the audio output port of the second camera is connected with the audio input port of the third camera, and so on, the audio output port of the N-1 th camera is connected with the audio input port of the Nth camera.
Furthermore, the audio output port of the first camera is connected with the audio input port of the second camera through a 3.5mm audio line, the audio output port of the second camera is connected with the audio input port of the third camera through a 3.5mm audio line, and so on, the audio output port of the N-1 th camera is connected with the audio input port of the N-1 th camera through a 3.5mm audio line.
Further, the value range of N is: [2, + ∞ ].
Further, the system further comprises: m switches and computers;
each X cameras are respectively connected with a switch;
and each switch is connected in sequence, and one switch is connected with the computer.
Further, the value of M is: m is less than or equal to N, and the value range of X is as follows: x is more than or equal to 1.
Further, the M switches are POE power switches.
Further, all connect through the net twine between M POE power supply switch, between M POE power supply switch and the camera, between POE power supply switch and the computer.
Further, the M switches are ordinary switches.
Furthermore, the M ordinary switches and the camera, and the ordinary switches and the computer are connected through network cables; and the N cameras are all connected with a power supply.
Further, the computer sends a shooting start signal/stop signal to the first camera, and the first camera transmits the start signal/stop signal to all other N-1 cameras through the audio interface, so that synchronous shooting start/stop of the cameras is realized.
In the free visual angle image acquisition system, the shooting synchronization among all cameras is realized by adopting an audio interface electric signal synchronization mode; in addition, the computer configures the parameters of one camera, reads the parameters of the camera and writes the parameters into all other cameras. The image acquisition system does not need to be additionally provided with a synchronous controller, so that the structure of the image acquisition system is simplified; and the parameter configuration of each camera does not need to be carried out manually, so that the workload of an operator is reduced, and the labor cost is saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a multi-lens image capturing system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The invention provides a multi-lens image acquisition system, as shown in fig. 1, comprising: n cameras: a first camera 1-1, a second camera 1-2, a third camera 1-3, a fourth camera 1-4, a fifth camera 1-5, a sixth camera 1-6, a seventh camera 1-7, an eighth camera 1-8, a ninth camera 1-9, … …, an Nth camera 1-N; the first camera 1-1 is connected with the second camera 1-2, the second camera 1-2 is connected with the third camera 1-3, and so on, and the N-1 th camera 1-N-1 is connected with the N-1 th camera 1-N.
The connection among the cameras adopts audio interfaces, and audio input ports and audio output ports are arranged on the first camera, the second camera, the … …, the N-1 th camera and the Nth camera and are used as synchronous signal transmission ports. And the audio output port O of the first camera is connected with the audio input port I of the second camera, the audio output port O of the second camera is connected with the audio input port I of the third camera, and so on, and the audio output port O of the N-1 th camera is connected with the audio input port I of the Nth camera. The audio input port I of the first camera and the audio output port O of the Nth camera are idle. Conventionally, the first camera 1-1 is taken as the master camera and the other cameras are taken as the slave cameras.
The audio connecting lines selected as the connecting lines between the cameras, such as 3.5mm audio lines, 2.5mm audio lines, optical fibers and the like, can realize the transmission of the synchronous signals. Preferably, the connecting line between the cameras is a 3.5mm audio line. The audio output port O of the first camera is connected with the audio input port I of the second camera through a 3.5mm audio line, the audio output port O of the second camera is connected with the audio input port I of the third camera through a 3.5mm audio line, and so on, the audio output port O of the N-1 camera is connected with the audio input port I of the N-1 camera through a 3.5mm audio line.
Because the cameras in the free visual angle image acquisition system are arranged at equal intervals, the audio connecting wires for transmitting the synchronous signals can adopt cables with equal length, so that the production and installation are convenient, the production cost can be reduced, and the installation and debugging speed can be accelerated.
The number N of cameras may be any value greater than or equal to 2, such as 16,32,64, and the like. The requirement of image acquisition is met.
In the free-viewing angle image acquisition system, a first camera transmits a start signal/stop signal to all slave cameras through a 3.5mm audio interface, so that synchronous start/stop shooting of all the cameras is realized. The mode of audio interface electric signal synchronization realizes the shooting synchronization among all cameras, no additional synchronous controller is needed to be configured, and the structure of the image acquisition system is simplified.
As shown in fig. 1, the system further includes: m switches: a first switch 4-1, a second switch 4-2, … …, an Mth switch 4-M, a computer 5. Each X cameras are respectively connected with a switch; and each exchanger is connected in sequence, and one exchanger is connected with the computer 5. The value of M is as follows: m is less than or equal to N, and the value range of X is as follows: x is more than or equal to 1.
In order to reduce the use of power cord, the system assembling of being convenient for, the switch adopts POE power supply switch. Each X camera is respectively connected with a POE power supply switch; conventionally, the value of X is determined according to the number of power supply interfaces of the POE power supply switch. Any power supply interface of the POE power supply switch can be connected with the last POE power supply switch, can be connected with the next power supply switch, can also be connected with a camera, and can also be connected with a computer. For example, an 8-port POE power supply switch, 6 cameras are correspondingly connected. And the other two power supply interfaces are used for being connected with the last POE power supply switch and the next POE power supply switch or a computer. Of course, only 1 camera or 2 cameras may be connected, that is, X may take the following values: x is more than or equal to 1, but less than or equal to the power supply interface number of the POE power supply switch minus 1; as long as the number of power supply interfaces of the POE power supply switch can meet the requirements. And the network cable interface of each camera is connected with the power supply interface of the POE power supply switch through a network cable.
Connect through the net twine order between every POE power supply switch, arbitrary idle interface of POE power supply switch is connected to one end, and arbitrary idle interface of adjacent another POE power supply switch is connected to the other end, last POE power supply switch's interface with computer 5's net gape is connected. That is, any idle interface of the first POE power supply switch 4-1 is connected to any idle interface of the second POE power supply switch 4-2, any idle interface of the second POE power supply switch 4-2 is connected to any power supply interface of the third POE power supply switch, and so on, and finally the interface of the mth POE power supply switch 4-M is connected to the network port of the computer 5 through the network cable.
The number N of cameras may be any value greater than or equal to 2, such as 16,32,64, and the like. The number of the POE power supply switch is determined according to the number of the connected cameras, and the value is as follows: m is less than or equal to N. For example: the number N of the cameras is 64, each POE power supply switch is connected with 6 cameras, the number M of the POE power supply switches is 11, and if each POE power supply switch is connected with 1 camera, the number M of the POE power supply switches is 64.
Of course, the switch may be a general switch. The connection mode is the same as that of the POE power supply switch, but all the cameras are additionally connected with a power supply to supply power to the cameras.
In the system, the computer 5 sends a shooting start signal/stop signal to the first camera 1-1, and the first camera 1-1 transmits the start signal/stop signal to all other N-1 cameras through an audio interface, so as to synchronously start/stop shooting of the cameras.
Before the system is used for collecting images, the computer 5 controls and debugs parameters of the first camera through a network cable, reads the parameters after the debugging is finished, and writes the parameters into all other cameras. The parameters include shutter speed, EV (exposure value) value, camera sensitivity ISO, white balance, and the like, which affect the image quality. The image parameters of all cameras do not need to be repeatedly debugged, the workload of operators is reduced, and therefore the labor cost is saved.
In the free visual angle image acquisition system, the shooting synchronization among all cameras is realized by adopting an audio interface electric signal synchronization mode; in addition, the computer configures the parameters of one camera, reads the parameters of the camera and writes the parameters into all other cameras. The image acquisition system does not need to be additionally provided with a synchronous controller, so that the structure of the image acquisition system is simplified; and the parameter configuration of each camera does not need to be carried out manually, so that the workload of an operator is reduced, and the labor cost is saved.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (11)
1. A freeview image acquisition system comprising: a first camera, a second camera, … …, an nth-1 camera, an nth camera, wherein the first camera is connected to the second camera, the second camera is connected to the third camera, and so on, wherein the nth-1 camera is connected to the nth camera.
2. The freeview image capturing system according to claim 1, wherein said first camera, said second camera, said … …, said N-1 th camera, and said nth camera are each provided with an audio input port and an audio output port as a synchronization signal transmission port; the audio output port of the first camera is connected with the audio input port of the second camera, the audio output port of the second camera is connected with the audio input port of the third camera, and so on, the audio output port of the N-1 th camera is connected with the audio input port of the Nth camera.
3. The freeview image acquisition system according to claim 2, wherein the audio output port of the first camera is connected to the audio input port of the second camera by a 3.5mm audio line, the audio output port of the second camera is connected to the audio input port of the third camera by a 3.5mm audio line, and so on, and the audio output port of the N-1 th camera is connected to the audio input port of the N-th camera by a 3.5mm audio line.
4. The freeview image acquisition system according to claim 3, wherein the value range of N is: [2, + ∞ ].
5. The freeview image acquisition system according to any one of claims 1 to 3, further comprising: m switches and computers;
each X cameras are respectively connected with a switch;
and each switch is connected in sequence, and one switch is connected with the computer.
6. The freeview image acquisition system according to claim 5, wherein the value of M is: m is less than or equal to N, and the value range of X is as follows: x is more than or equal to 1.
7. The system of claim 5, wherein the M switches are POE powered switches.
8. The system of claim 7, wherein the M POE power switches, the M POE power switches and the camera, and the POE power switches and the computer are connected via a cable.
9. The freeview image acquisition system according to claim 5, wherein said M switches are ordinary switches.
10. The system according to claim 9, wherein the M general exchanges, the M general exchanges and the camera, and the general exchange and the computer are connected by network cables; and the N cameras are all connected with a power supply.
11. The freeview image acquisition system according to any one of claims 5 to 10, wherein said computer sends a shooting start signal/stop signal to a first camera, and the first camera transmits the start signal/stop signal to all the other N-1 cameras through an audio interface, so as to start/stop shooting synchronously.
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| CN202010415769.5A CN111447368A (en) | 2020-05-16 | 2020-05-16 | Free visual angle image acquisition system |
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| CN202010415769.5A CN111447368A (en) | 2020-05-16 | 2020-05-16 | Free visual angle image acquisition system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113784076A (en) * | 2021-11-15 | 2021-12-10 | 中国空气动力研究与发展中心超高速空气动力研究所 | Device and method for synchronously and automatically downloading multi-point monitoring video for wind tunnel test |
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- 2020-05-16 CN CN202010415769.5A patent/CN111447368A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113784076A (en) * | 2021-11-15 | 2021-12-10 | 中国空气动力研究与发展中心超高速空气动力研究所 | Device and method for synchronously and automatically downloading multi-point monitoring video for wind tunnel test |
| CN113784076B (en) * | 2021-11-15 | 2022-01-21 | 中国空气动力研究与发展中心超高速空气动力研究所 | Device and method for synchronously and automatically downloading multi-point monitoring video for wind tunnel test |
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