CN108600652B - Multi-camera integrated image acquisition equipment and control method thereof - Google Patents
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- 230000015654 memory Effects 0.000 claims description 20
- 238000000926 separation method Methods 0.000 claims description 6
- 230000002457 bidirectional effect Effects 0.000 claims 2
- 230000001360 synchronised effect Effects 0.000 claims 1
- 238000005192 partition Methods 0.000 abstract 2
- 238000003384 imaging method Methods 0.000 description 9
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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
- H04N23/90—Arrangement of cameras or camera modules, e.g. multiple cameras in TV studios or sports stadiums
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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
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
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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
- H04N23/67—Focus control based on electronic image sensor signals
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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
- H04N23/698—Control of cameras or camera modules for achieving an enlarged field of view, e.g. panoramic image capture
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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Abstract
The invention discloses a multi-camera comprehensive image acquisition device and a method thereof, wherein the device is provided with a device box, a main camera for acquiring a panoramic image S and at least two sub-cameras for acquiring separated images are arranged in the device box, the focal length of each sub-camera is greater than that of the main camera, the image output ends of the main camera and the sub-cameras are respectively connected with the image input end group of a control system, and a combined picture S' formed by the separated images acquired by all the sub-cameras comprises the panoramic image S. Has the advantages that: the multi-camera comprehensive image acquisition equipment and the control method thereof can synchronously acquire the panoramic image and the images of all the partition areas of the panoramic image, and the acquired partition images are clearer in detail and convenient for later editing of the images.
Description
Technical Field
The invention relates to the field of image acquisition, in particular to a multi-camera comprehensive image acquisition device and a control method thereof.
Background
The focal length of the lens is a very important indicator of the lens. The length of the focal length of the lens determines the size of an image formed by a shot object on an imaging medium, namely the scale of the object and the image. When the same camera shoots the same object with the same distance, the focal length of the lens is short, the formed image is small, the shooting angle of view is large, and the scene in a large range can be shot. But the shot details are small and not clear enough.
According to the formulas f-wD/W and f-hD/H, where f is the focal length, W is the imaging width, D is the object distance, W is the imaging target width, H is the imaging height, and H is the imaging target height. It can be concluded that the size of the camera image is proportional to the focal length. To enlarge the image and make the details clearer, the focal length must be enlarged.
However, according to the formulas ah, ah is a horizontal angle of view and av is a vertical angle of view, 2arctg (h/2f) and av is 2arctg (v/2 f). If the focal length of the lens is enlarged, the field angle of the shot image becomes smaller, and only a partial area of the image can be shot.
In the prior art, in order to collect a panoramic image of a shooting target and also collect an enlarged image of each area of the panoramic image, only a focal length is reduced to obtain the panoramic image, and then the focal length is enlarged to collect the enlarged image. This results in the panoramic image and the magnified image not being acquired simultaneously. However, no device capable of synchronously acquiring panoramic images and amplifying images exists in the prior art.
Disclosure of Invention
In order to solve the technical problems, the invention provides a multi-camera integrated image acquisition device and a control method thereof.
The technical scheme is as follows:
the utility model provides an image acquisition equipment is synthesized to many cameras, is provided with the equipment box, and its key lies in: the equipment box is internally provided with a main camera for collecting a panoramic image S and at least two sub-cameras for collecting separated images, the focal length of each sub-camera is greater than that of the main camera, the image output ends of the main camera and the sub-cameras are respectively connected with the image input end group of a control system, and a combined picture S' formed by the separated images collected by all the sub-cameras contains the panoramic image S.
A panoramic image S of a shooting target is collected through a main camera, and amplified images of all areas of the panoramic image S are collected through a plurality of sub cameras with large focal lengths. Thus, the panoramic image S of the photographic subject and the enlarged images of the respective areas can be simultaneously acquired.
Furthermore, the front portion of the equipment box is provided with a supporting frame, a main sash is arranged in the center of the supporting frame, the main camera is installed on the main sash, at least two sub sashes are arranged on the periphery of the main sash, all the sub sashes are uniformly distributed around the main sash, and each sub sash is installed with the sub camera, all the sub cameras are parallel to each other and are consistent in orientation with the main camera.
The main camera and the sub-cameras are respectively arranged in the main sash and the sub-sash, if one of the cameras fails, the new camera can be conveniently replaced, and the shooting time is not delayed.
Furthermore, the control system is provided with at least three image processing modules, an image memory, an input/output module and a controller, wherein one image processing module is connected with the main camera, and the other image processing modules are respectively connected with the branch cameras in a one-to-one correspondence manner;
the output ends of all the image processing modules are connected with an image memory, the image memory is bidirectionally connected with a controller, and the controller is bidirectionally connected with the input and output module.
Each image input end corresponds to one image processing module, so that the images collected by the cameras can be filtered simultaneously, image time delay is avoided, and later-stage image cutting and editing are facilitated.
Furthermore, all the image processing modules are connected to the same image memory, the image memory is provided with an input end group, the input end group is connected with all the filters in a one-to-one correspondence manner, and each input end in the input end group corresponds to one storage area.
The image processing module synchronously carries out denoising processing on the panoramic image S sent by the main camera and the separating image sent by the sub-camera, sends the processed images to the image memory, and stores the panoramic image S and the separating image in corresponding memories. Images shot by each camera cannot be omitted, and when the images of each area need to be switched, the controller only needs to call the images from the corresponding storage area of the area, so that the images can be switched conveniently.
Furthermore, the main camera and the sub-cameras are both electrically controlled focusing cameras, a focusing control end of the main camera is connected with a main lens control end of the controller, the controller is provided with a sub-lens control end, and the sub-lens control end is connected with the focusing control ends of all the sub-cameras. In order to ensure that the magnification of the main camera is consistent with that of the sub-cameras, the ratio of the focal lengths of all the sub-cameras to the focal length of the main camera is equal and is kept synchronously changed. Therefore, the phenomenon that the images shot by the branch camera and the main camera are not coordinated due to the fact that the magnification times of the branch camera and the main camera are inconsistent can be avoided.
Furthermore, the main camera and all the sub-cameras are provided with electronic control focusing lenses with the same structure, each electronic control focusing lens is provided with a lens barrel, a linear guide rail, a lens group and a linear stepping motor are arranged between the front end and the rear end of each lens barrel, each linear stepping motor drives the lens group to slide back and forth on the linear guide rail, and each linear stepping motor is connected with the controller.
A control method of a multi-camera integrated image acquisition device is characterized in that: the method comprises the following steps:
step S1, the controller generates a focal length ratio coefficient c between the main camera and the sub-camera;
step S2, the controller controls the main camera and the sub cameras to synchronously acquire the panoramic image S and the combined picture S 'of the shooting target and send the panoramic image S and the combined picture S' to the connected image processing module;
step S3, the controller controls the image processing module to process the panoramic image S and the combined picture S' to generate image information e, and transmits the image information e to a correspondingly connected storage area for storage;
step S4, the controller obtains the image selection information d input by the input/output module, the image selection information d corresponds to the storage area in the image memory;
and step S5, the controller calls the image information e stored in real time from the corresponding storage area according to the image selection information d and sends the image information e to the input and output module for display.
Further, in step S1, the focal length ratio coefficient c is determined by the following method:
s1-1, acquiring focal length setting information f input by the input and output module, wherein the focal length setting information f comprises primary focal length setting information f1 of a main camera and primary focal length setting information f2 of a branch camera;
step S1-2, respectively setting the focal length of the main camera and the focal length of the branch camera according to the focal length preliminary setting information f1 of the main camera and the focal length preliminary setting information f2 of the branch camera;
s1-3, acquiring a panoramic original image a1 of a shooting target through a main camera, and sending the panoramic original image a1 to an input and output module for display;
s1-4, acquiring fine adjustment information b1 of the focal length of the main lens sent by the input and output module;
s1-5, adjusting the focal length of the main camera according to the main lens focal length fine adjustment information b 1;
s1-6, acquiring a panoramic correction image a1 'of a shooting target through a main camera, and sending the panoramic correction image a 1' to an input and output module for display;
step S1-7, judging whether the information j1 of the camera is received, if not, returning to the step S1-4, if so, entering the step S1-8;
s1-8, acquiring a separated original image a2 of the shooting target through a branch camera, and sending the separated original image a2 to an input and output module for display;
s1-9, acquiring the fine tuning information b2 of the focal length of the sub-lens sent by the input and output module;
s1-10, adjusting the focal length of the sub-camera according to the sub-lens focal length fine adjustment information b 2;
s1-11, acquiring a separation correction image a2 'of a shooting target through a sub camera, and sending the separation correction image a 2' to an input and output module for display;
step S1-12, judging whether the setting completion information j2 is received, if not, returning to the step S1-9, if so, entering the step S1-13;
and step S1-13, combining the focal length setting information f, the sub-lens focal length fine adjustment information b2 and the main lens focal length fine adjustment information b1 to generate and store a focal length ratio coefficient c between the sub-lens and the main lens.
By adopting the method, the focal lengths of the main camera and the sub-camera can be respectively set according to the requirements of a cameraman, and in the shooting process, if the cameraman adjusts the focal length of one of the cameras, the controller can also synchronously adjust other cameras according to the focal length ratio coefficient c, so that the situation that the images are not matched is avoided.
Further, in step S2, if the focal length of the main camera changes, the controller synchronously adjusts the focal lengths of the sub-cameras according to the focal length ratio coefficient c;
if the focal length of the sub-camera changes, the controller synchronously adjusts the focal length of the main camera according to the focal length ratio coefficient c.
Has the advantages that: by adopting the multi-camera comprehensive image acquisition equipment and the control method thereof, the panoramic image S and the images of all the partitioned areas of the panoramic image S can be synchronously acquired, the acquired partitioned images are clearer in detail, and the later-stage editing of the images is convenient.
Drawings
FIG. 1 is a block diagram of the present invention;
fig. 2 is a structural view of the support frame 4;
fig. 3 is a structural view of an electronically controlled focus lens;
fig. 4 is a schematic view of a connection structure of the support frame 4 and the equipment box 1;
FIG. 5 is a block diagram of a control system;
FIG. 6 is a flow chart of controller focus setting;
fig. 7 is a flow chart of controller image switching.
Detailed Description
The invention is further illustrated by the following examples and figures.
As shown in fig. 1 to 5, a multi-camera integrated image pickup apparatus is provided with an apparatus box 1, a main camera for picking up a panoramic image S of a photographic subject and a sub camera 3 for picking up a divisional image S' of the photographic subject are provided in the apparatus box 1.
The main camera 2 and the sub-camera 3 are both electric control focusing cameras, the electric control focusing cameras are provided with electric control focusing lenses and imaging equipment 11, the electric control focusing lenses are provided with lens barrels 7, and linear guide rails 8, lens groups 9 and linear stepping motors 10 are arranged between the front ends and the rear ends of the lens barrels 7. The linear guide rail 8 is divided into an upper guide rail and a lower guide rail, the upper guide rail and the lower guide rail are both arranged on the inner wall of the lens cone 7 and are respectively positioned at the top and the bottom of the lens cone 7, and the rear end of the lens cone 7 is connected with the imaging device 11.
The lens group 9 is arranged between the upper guide rail and the lower guide rail and is respectively connected with the upper guide rail and the lower guide rail in a sliding manner. The linear stepping motor 10 is arranged at the rear end of the lens barrel 7, and a push rod of the linear stepping motor 10 is fixed with the lens group. And the control end of the linear stepping motor 10 is used as a focusing control end and is connected with the controller.
The focusing control end of the main camera 2 is connected with the main lens control end of the controller, the controller is provided with a sub-lens control end, and the sub-lens control end is connected with the focusing control ends of all the sub-cameras 3.
The front of the equipment cabinet 1 is provided with a support frame 4 for fixing the main camera 2 and the sub-cameras 3. A rectangular main frame 5 is provided at the center of the support frame 4, and 1 rectangular sub-frame 6 is provided in each of the upper, lower, left, and right directions of the main frame 5.
The 4 sub-lattices 6 are evenly distributed around the main lattice 5 and fixed with the main lattice 5 by connecting columns 5 a. Each sub-sash 6 is fixed with the inner wall of the equipment box 1 through a fixing column 6 a. The front frame opening and the rear frame opening of the main frame 5 and the sub frame 6 are both provided with buckles, and the main frame 5 of the imaging equipment 11 of the main camera is fixed in the main frame 5 through the buckles. The imaging devices 11 of the partial cameras 3 are fixed in the partial sash 6 by means of snap-in.
The front end of the equipment box 1 is provided with a main lens window matched with the main sash 5 and a sub lens window matched with the sub sash 6. The lens of the main camera 2 penetrates out of the equipment box 1 along the main lens window, and the lens of the sub camera penetrates out of the equipment box 1 along the sub lens window.
The focal length of the branch camera 3 is larger than that of the main camera 2, the image output ends of the main camera 2 and the branch camera 3 are respectively connected with the image input end of a control system through data transmission lines, and the control system is arranged at the rear part of the equipment box 1.
The control system is provided with an image processing module, an image memory and an input and output module. The image processing module is provided with 5 image input ends, and each image input end is correspondingly connected with the main camera 2 and the branch cameras 3 one by one through data transmission lines.
The image output end of the image processing module is connected with an image memory, the image memory is bidirectionally connected with a controller, the controller is bidirectionally connected with an input and output module, and the input and output module is arranged on the outer surface of the equipment box 1.
The image processing module is provided with 5 image output ends which are respectively in one-to-one correspondence with the image input ends. The image memory is provided with 5 storage areas, the 5 storage areas correspond to the main camera 2 and the sub-cameras 3 one by one, and the input ends of all the storage areas are connected with the image output end groups of the image processing module in a one-to-one correspondence mode.
The main camera 2 and the sub-cameras 3 respectively collect a panoramic image S and a combined picture S ' of a shooting target, and send the panoramic image S and the combined picture S ' to corresponding image processing modules through data transmission lines, and the image processing modules send information to corresponding storage areas for storage after filtering the panoramic image S and the combined picture S '. The controller calls the corresponding image information from the image memory according to the image rotation information d input by the input-output module and sends the image information to the input-output module for display.
As shown in fig. 6, a control method of a multi-camera integrated image capturing apparatus includes the steps of:
step S1, the controller generates a focal length ratio coefficient c between the main camera 2 and the sub-camera 3;
step S2, the controller controls the main camera 2 and the sub-cameras 3 to synchronously acquire the panoramic image S and the combined picture S 'of the shooting target and send the panoramic image S and the combined picture S' to the connected image processing module;
step S3, the controller controls the image processing module to process the panoramic image S and the combined picture S' to generate image information e, and transmits the image information e to a correspondingly connected storage area for storage;
step S4, the controller obtains the image selection information d input by the input/output module, the image selection information d corresponds to the storage area in the image memory;
and step S5, the controller calls the image information e stored in real time from the corresponding storage area according to the image selection information d and sends the image information e to the input and output module for display.
As shown in fig. 7, in step S1, the focal length ratio coefficient c is determined by the following method:
step S1-1, acquiring focal length setting information f input by the input and output module, wherein the focal length setting information f comprises focal length preliminary setting information f1 of the main camera 2 and focal length preliminary setting information f2 of the branch camera 3;
step S1-2, respectively setting the focal length of the main camera 2 and the focal length of the sub camera 3 according to the focal length preliminary setting information f1 of the main camera 2 and the focal length preliminary setting information f2 of the sub camera 3;
s1-3, acquiring a panoramic original image a1 of a shooting target through the main camera 2, and sending the panoramic original image a1 to an input and output module for display;
s1-4, acquiring fine adjustment information b1 of the focal length of the main lens sent by the input and output module;
step S1-5, adjusting the focal length of the main camera 2 according to the main lens focal length fine adjustment information b 1;
s1-6, acquiring a panoramic correction image a1 'of a shooting target through the main camera 2, and sending the panoramic correction image a 1' to an input and output module for display;
step S1-7, judging whether the information j1 of the camera is received, if not, returning to the step S1-4, if so, entering the step S1-8;
s1-8, acquiring a separated original image a2 of the shooting target through the branch camera 3, and sending the separated original image a2 to an input and output module for display;
s1-9, acquiring the fine tuning information b2 of the focal length of the sub-lens sent by the input and output module;
s1-10, adjusting the focal length of the sub-camera 3 according to the sub-lens focal length fine adjustment information b 2;
s1-11, acquiring a separation correction image a2 'of a shooting target through the sub camera 3, and sending the separation correction image a 2' to an input and output module for display;
step S1-12, judging whether the setting completion information j2 is received, if not, returning to the step S1-9, if so, entering the step S1-13;
and step S1-13, combining the focal length setting information f, the sub-lens focal length fine adjustment information b2 and the main lens focal length fine adjustment information b1 to generate and store a focal length ratio coefficient c between the sub-lens and the main lens.
Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.
Claims (3)
1. The utility model provides an image acquisition equipment is synthesized to many cameras, is provided with equipment box (1), its characterized in that: the equipment box (1) is internally provided with a main camera (2) for collecting a panoramic image S and at least two sub-cameras (3) for collecting separated images, the focal length of each sub-camera (3) is greater than that of the main camera (2), the image output ends of the main camera (2) and the sub-cameras (3) are respectively connected with the image input end group of a control system, and a combined picture S' formed by the separated images collected by all the sub-cameras (3) comprises the panoramic image S;
acquiring a panoramic image S of a shooting target through a main camera, and respectively acquiring amplified images of all areas of the panoramic image S through a plurality of sub cameras with larger focal lengths; therefore, the panoramic image S of the shooting target and the amplified images of all the areas can be acquired simultaneously;
the front part of the equipment box (1) is provided with a supporting frame (4), the central position of the supporting frame (4) is provided with a main sash (5), the main sash (5) is provided with the main camera (2), at least two sub sashes (6) are uniformly distributed on the periphery of the main sash (5), each sub sash (6) is provided with the sub camera (3), and the shooting sight lines of all the sub cameras (3) are parallel to the main camera (2) and have the same orientation;
the control system is provided with at least three image processing modules, an image memory, an input/output module and a controller, wherein one image processing module is connected with the main camera, and the other image processing modules are respectively connected with the sub-cameras (3) in a one-to-one correspondence manner;
the filter output ends of all the image processing modules are connected with image memories, the image memories are connected with a controller in a bidirectional mode, and the controller is connected with an input/output module in a bidirectional mode;
the main camera (2) and the sub-cameras (3) are both electrically controlled focusing cameras, a focusing control end of the main camera (2) is connected with a main lens control end of the controller, the controller is provided with a sub-lens control end, the sub-lens control end is connected with the focusing control ends of all the sub-cameras (3), and the ratio of the focal length of all the sub-cameras (3) to the focal length of the main camera (2) is equal and keeps synchronous change;
the main camera (2) and all the sub-cameras (3) are provided with electric control focusing lenses with the same structure, each electric control focusing lens is provided with a lens barrel (7), a linear guide rail (8), a lens group (9) and a linear stepping motor (10) are arranged between the front end and the rear end of each lens barrel (7), each linear stepping motor (10) drives each lens group (9) to slide back and forth on the corresponding linear guide rail (8), and each linear stepping motor (10) is connected with a controller.
2. The multi-camera integrated image capturing apparatus according to claim 1, wherein: all the image processing modules are connected to the same image memory, the image memory is provided with an input end group, the input end group is correspondingly connected with all the filters one by one, and each input end in the input end group corresponds to one storage area.
3. A control method of a multi-camera integrated image acquisition device is characterized in that: the method comprises the following steps:
step S1, the controller generates a focal length ratio coefficient c between the main camera (2) and the branch camera (3);
step S2, the controller controls the main camera (2) and the sub-camera (3) to synchronously acquire the panoramic image S and the combined picture S 'of the shooting target and send the panoramic image S and the combined picture S' to the connected image processing module;
step S3, the controller controls the image processing module to process the panoramic image S and the combined picture S' to generate image information e, and transmits the image information e to a correspondingly connected storage area for storage;
step S4, the controller obtains the image selection information d input by the input/output module, the image selection information d corresponds to the storage area in the image memory;
step S5, the controller calls the image information e stored in real time from the corresponding storage area according to the image selection information d and sends the image information e to the input/output module for display;
in step S1, the focal length ratio coefficient c is determined by the following method:
s1-1, acquiring focal length setting information f input by the input and output module, wherein the focal length setting information f comprises focal length preliminary setting information f1 of a main camera (2) and focal length preliminary setting information f2 of a branch camera (3);
s1-2, respectively setting the focal length of the main camera (2) and the focal length of the branch camera (3) according to the focal length preliminary setting information f1 of the main camera (2) and the focal length preliminary setting information f2 of the branch camera (3);
s1-3, acquiring a panoramic original image a1 of a shooting target through a main camera (2), and sending the panoramic original image a1 to an input and output module for display;
s1-4, acquiring fine adjustment information b1 of the focal length of the main lens sent by the input and output module;
s1-5, adjusting the focal length of the main camera (2) according to the main lens focal length fine adjustment information b 1;
s1-6, acquiring a panoramic correction image a1 'of a shooting target through the main camera (2), and sending the panoramic correction image a 1' to an input-output module for display;
step S1-7, judging whether the information j1 of the camera is received, if not, returning to the step S1-4, if so, entering the step S1-8;
s1-8, acquiring a separated original image a2 of the shooting target through the branch camera (3), and sending the separated original image a2 to an input and output module for display;
s1-9, acquiring the fine tuning information b2 of the focal length of the sub-lens sent by the input and output module;
s1-10, adjusting the focal length of the sub camera (3) according to the sub lens focal length fine adjustment information b 2;
s1-11, acquiring a separation correction image a2 'of a shooting target through a sub camera (3), and sending the separation correction image a 2' to an input and output module for display;
step S1-12, judging whether the setting completion information j2 is received, if not, returning to the step S1-9, if so, entering the step S1-13;
step S1-13, combining the focal length setting information f, the sub-lens focal length fine adjustment information b2 and the main lens focal length fine adjustment information b1, generating a focal length ratio coefficient c between the sub-lens and the main lens, and storing the coefficient;
in step S2, if the focal length of the main camera (2) changes, the controller synchronously adjusts the focal length of the sub-camera (3) according to the focal length ratio coefficient c;
if the focal length of the sub-camera (3) changes, the controller synchronously adjusts the focal length of the main camera (2) according to the focal length ratio coefficient c.
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| CN109379522A (en) * | 2018-12-06 | 2019-02-22 | Oppo广东移动通信有限公司 | Imaging method, imaging device, electronic device and medium |
| CN112637491A (en) * | 2020-12-18 | 2021-04-09 | 维沃移动通信（杭州）有限公司 | Photographing method and photographing apparatus |
| CN113703065A (en) * | 2021-08-24 | 2021-11-26 | 中国科学院上海微系统与信息技术研究所 | Anti-inclination passive infrared detection light path design method |
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