CN112449149A - Video camera - Google Patents
Video camera Download PDFInfo
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- CN112449149A CN112449149A CN201910812704.1A CN201910812704A CN112449149A CN 112449149 A CN112449149 A CN 112449149A CN 201910812704 A CN201910812704 A CN 201910812704A CN 112449149 A CN112449149 A CN 112449149A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
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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
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
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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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Abstract
The embodiment of the invention provides a video camera which comprises a camera processing chip and a plurality of camera components, wherein each camera component comprises a fixed focus lens and an image sensor, the field angles of different camera components are different, and comprise a horizontal field angle and a vertical field angle, wherein the fixed focus lens and the image sensor in each camera component are arranged oppositely, and the fixed focus lens is used for collecting optical signals and sending the optical signals to the corresponding image sensor; each image sensor is respectively connected with the camera processing chip and is used for processing the received optical signals to obtain image data and sending the image data to the processing chip; the camera processing chip is used for determining an image to be displayed according to the received image data. The camera provided by the embodiment of the invention can solve the problems that the speed of adjusting the field angle is slow or the definition of the picture is reduced in the prior art.
Description
Technical Field
The embodiment of the invention relates to the technical field of security monitoring, in particular to a camera.
Background
The monitoring equipment is an important security instrument and has a positive effect on improving the safety of public areas. In the monitoring device, a camera captures an optical signal through a lens and processes the optical signal to obtain a picture visible to human eyes, and the field angle of the camera determines the field range of the lens, so that the field angle of the camera needs to be changed according to different scenes to meet the requirements for monitoring under different scenes.
There are two main methods for adjusting the field angle of a video camera, one is to adjust the field angle by changing the optical magnification of a zoom lens, and this method is to change the focal length of the lens by moving the lens, so as to adjust the field angle. The drawback of this zoom method is that, in order to achieve a wide zoom range, the zoom camera has a large volume, and the zoom speed is slower as the zoom ratio is larger. The other method is to adjust the field angle by digitally varying the magnification of the image captured by the fixed focus lens, and this method is to separately enlarge a partial area of the image information captured by the fixed focus lens. This method has a disadvantage that the visibility of the screen obtained by adjusting the angle of view by digital magnification change is lowered, which is disadvantageous for observation.
Therefore, there is a need for a monitoring device capable of adjusting a viewing angle, which solves the problems of the conventional method for adjusting a viewing angle that the speed is slow or the definition of a screen is reduced.
Disclosure of Invention
The embodiment of the invention provides a camera, which aims to solve the problems that the speed of adjusting the field angle is slow or the definition of a picture is reduced in the prior art.
In a first aspect, an embodiment of the present invention provides a video camera, including a camera processing chip and a plurality of image capturing assemblies, each image capturing assembly including a fixed focus lens and an image sensor, the different image capturing assemblies having different angles of view, including a horizontal angle of view and a vertical angle of view, wherein,
the fixed-focus lens in each camera shooting assembly is arranged opposite to the image sensor, and is used for collecting optical signals and sending the optical signals to the corresponding image sensor;
each image sensor is respectively connected with the camera processing chip and is used for processing the received optical signals to obtain image data and sending the image data to the processing chip;
the camera processing chip is used for determining an image to be displayed according to the received image data.
In one possible implementation, the focal lengths of the prime lenses included in different camera assemblies are different, and/or the size of the target surface of the image sensor is different.
In one possible implementation, the fixed-focus lenses in the plurality of camera assemblies are oriented in the same direction.
In one possible implementation manner, a distance between any adjacent camera assemblies in the plurality of camera assemblies is smaller than a preset value.
In a possible implementation manner, the camera processing chip is specifically configured to:
acquiring display parameters, wherein the display parameters comprise a target horizontal field angle and a target vertical field angle;
acquiring a field angle of each camera shooting assembly, wherein the field angle of each camera shooting assembly comprises a horizontal field angle and a vertical field angle of each camera shooting assembly;
and determining the image to be displayed according to the display parameters, the field angle of each camera shooting assembly and the received image data sent by the image sensor in each camera shooting assembly.
In a possible implementation manner, the camera processing chip is specifically configured to:
and if the display parameter is the same as the field angle of a first camera shooting assembly, determining the image to be displayed according to image data sent by an image sensor in the first camera shooting assembly, wherein the first camera shooting assembly is one of the plurality of camera shooting assemblies.
In a possible implementation manner, the camera processing chip is specifically configured to:
if the first field area corresponding to the display parameter is larger than a second field area corresponding to the field angle of the second camera shooting assembly and smaller than a third field area corresponding to the field angle of a third camera shooting assembly, determining a first image according to image data sent by an image sensor in the third camera shooting assembly, and determining a partial image corresponding to the first field area in the first image as the image to be displayed.
In a possible implementation manner, the camera processing chip is specifically configured to:
if the first field area corresponding to the display parameter is equal to a second field area corresponding to the field angle of the second camera shooting assembly and is smaller than a third field area corresponding to the field angle of a third camera shooting assembly, determining a second image according to image data sent by an image sensor in the second camera shooting assembly, and determining a third image according to image data sent by an image sensor in the third camera shooting assembly;
and blurring the images except for the partial image corresponding to the first view field area in the third image, and fusing the blurred third image and the second image to obtain the image to be displayed.
In a possible implementation manner, the camera processing chip is specifically configured to:
if the first view field area corresponding to the display parameter is larger than a second view field area corresponding to the field angle of the second camera shooting assembly and is smaller than or equal to a third view field area corresponding to the field angle of a third camera shooting assembly, performing fusion processing on images in a first image set to obtain the image to be displayed, wherein the first image set comprises image data sent by image sensors in at least two camera shooting assemblies, and the view field areas corresponding to the field angles of the at least two camera shooting assemblies are smaller than or equal to the third view field area.
In a possible implementation manner, the camera processing chip is specifically configured to:
if the first view field area corresponding to the display parameter is larger than a second view field area corresponding to the field angle of the second camera shooting assembly and is smaller than or equal to a third view field area corresponding to the field angle of a third camera shooting assembly, sequencing the images in the first image set according to the sequence of the view field areas from small to large;
and fusing the content in the ith image in the first image set to the (i + 1) th image, wherein i is 1, 2, … … and N in sequence, and N is the number of images in the first image set.
The camera provided by the embodiment of the invention comprises a camera processing chip and a plurality of camera components, wherein each camera component comprises a fixed focus lens and an image sensor, the field angles of different camera components are different, the fixed focus lens and the image sensor in each camera component are arranged oppositely, and the fixed focus lens is used for collecting optical signals and sending the optical signals to the corresponding image sensor; each image sensor is respectively connected with the camera processing chip and is used for processing the received optical signals to obtain image data and sending the image data to the processing chip; the camera processing chip is used for determining an image to be displayed according to the received image data. According to the camera provided by the embodiment of the invention, the plurality of camera modules are arranged to realize the collection of the images with different field angles, each camera module can simultaneously collect image data, the image data with different field angles are processed according to needs, and a lens does not need to be moved, so that the zooming speed is high, and the images when the field angles are changed are obtained by directly coding and outputting the collected image data without digital amplification operation, so that the definition of the images is not reduced. The monitoring of different field angles is obtained through the image acquisition of the plurality of camera modules, and the camera modules are switched to different camera modules under different field angle requirements, so that the optical zoom effect is achieved, and high-quality monitoring pictures of different field angles can be obtained.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are 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 view of an application scenario of a camera according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a camera according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a camera module according to an embodiment of the present invention;
FIG. 4 is a schematic view of an embodiment of the present invention;
fig. 5a is a first schematic view of angles of view of two camera modules according to an embodiment of the present invention;
fig. 5b is a schematic view of the field angles of two camera modules according to the embodiment of the present invention;
fig. 5c is a schematic view of the field angles of two camera modules according to the embodiment of the present invention;
fig. 6 is a schematic diagram of images obtained by different camera modules according to an embodiment of the present invention;
fig. 7a is a first schematic image frame diagram of a third camera module according to an embodiment of the present invention;
fig. 7b is a schematic image frame diagram of a third camera module according to an embodiment of the present invention;
fig. 7c is a third schematic image frame diagram of a third camera module according to an embodiment of the present invention;
FIG. 8 is a diagram illustrating a client inputting display parameters according to an embodiment of the present invention;
fig. 9 is a schematic diagram of adjusting display parameters by a client according to an embodiment of the present invention;
fig. 10 is a schematic diagram of image blurring processing and fusion according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic view of an application scenario of a camera according to an embodiment of the present invention, as shown in fig. 1, the camera includes a camera 11, a client 12, and a display 13, where the camera 11 and the client 12 are connected through a wired or wireless network, and the camera 11 and the display 13 are connected through a wireless network.
The video camera 11 captures images with different field angles through a plurality of camera modules, and sends the images to the camera processing chip for processing to obtain an image to be displayed. After the client 12 is connected to the camera 11, an instruction may be sent to the camera 11, for example, a display parameter may be input, and after the camera 11 receives the display parameter, an image that the client wants to view is determined according to the display parameter, and the received multiple paths of image data are processed to obtain an image to be displayed. The image to be displayed may be sent to the client 12 for display, or may be sent to the display 13 for display.
The instructions that the client 12 can send include various instructions, for example, may instruct to display a screen with a certain angle of view, may instruct to display a screen with a smaller or smaller angle of view, may instruct to display a plurality of screens with different angles of view for merging, and obtain a screen with higher resolution and higher definition, and so on.
It can be understood that the camera can capture images and also can capture videos, and the videos are composed of images of one frame and one frame, so that if the video is captured by the camera, the videos can be converted into images arranged in sequence of one frame and one frame, and then the above-mentioned processing is performed on each frame of images, and the images are sequentially displayed according to the sequence of the images, so that the corresponding videos to be displayed can be obtained.
The technical solution of the present invention and how to solve the above technical problems will be described in detail with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present invention will be described below with reference to the accompanying drawings.
Fig. 2 is a schematic structural diagram of a video camera according to an embodiment of the present invention, and as shown in fig. 2, the video camera includes a camera processing chip 21 and a plurality of camera modules 22, where the plurality of camera modules 22 are respectively a camera module 1, a camera module 2, and a camera module 3. Each camera module includes a fixed focus lens and an image sensor, and the structure of the camera module will be described with reference to fig. 3.
Fig. 3 is a schematic structural diagram of the image capturing assemblies according to the embodiment of the present invention, and as shown in fig. 3, each image capturing assembly 22 includes a fixed focus lens 31 and an image sensor 32, the fixed focus lens 31 and the image sensor 32 are disposed opposite to each other, and the fixed focus lens 31 is a lens with an unchangeable focal length and is used for collecting an optical signal and sending the optical signal to the corresponding image sensor 32. The image sensor 32 mainly performs photoelectric conversion, converts an optical signal collected from the fixed-focus lens 31 into an electric signal, obtains image data after amplification analog-to-digital conversion, and sends the image data to a camera processing chip. The camera processing chip outputs an image picture visible to human eyes, namely an image to be displayed, after being coded.
The plurality of imaging units 22 have different angles of view, and an angle formed by two edges of the optical instrument, at which the lens of the optical instrument is a vertex and the object image of the object can pass through the lens to the maximum extent, is referred to as an angle of view. The size of the field angle determines the field range of the fixed-focus lens, and the larger the field angle, the larger the field of view, and the smaller the optical magnification, i.e., the target object is not captured in the lens beyond the angle.
The angle of view of the video camera is explained below as an example. Fig. 4 is a schematic view of the field angle provided by the embodiment of the present invention, as shown in fig. 4, including a lens 41 and an image sensor target surface 42, where the image sensor target surface 42 is rectangular, and has a length v and a width h, and the distance from the image sensor target surface 42 to the lens 41 is the focal length f of the lens 41. The viewing surface 43 photographed by the lens 41 and the image sensor target surface 42 is also a rectangle, the height of the viewing surface 43 is H, the length of the viewing surface 43 is V, and the distance from the viewing surface 43 to the lens 41 is D.
The field of view of the image capturing module includes a horizontal field of view and a vertical field of view, as shown in fig. 4, where the horizontal field of view is α and the vertical field of view is β, where:
and the following steps:
can be obtained from (1) and (2),
therefore, the angle of view is related to the focal length of the lens 41, and also to the size of the target surface 42 of the image sensor. The image pickup modules having different angles of view can be set by providing different lenses 41 or by providing different sizes of the target surfaces 42 of the image sensors.
By arranging the camera modules 22 with different field angles, image data with different field angles can be collected and sent to the camera processing chip 21, the camera processing chip 21 acquires the image data with different field angles and the field angle corresponding to each image data, and then the to-be-displayed image visible to human eyes is determined through encoding processing.
The camera provided by the embodiment of the invention comprises a camera processing chip and a plurality of camera components, wherein each camera component comprises a fixed focus lens and an image sensor, the field angles of different camera components are different, the fixed focus lens and the image sensor in each camera component are arranged oppositely, and the fixed focus lens is used for collecting optical signals and sending the optical signals to the corresponding image sensor; each image sensor is respectively connected with the camera processing chip and is used for processing the received optical signals to obtain image data and sending the image data to the processing chip; the camera processing chip is used for determining an image to be displayed according to the received image data. According to the camera provided by the embodiment of the invention, the plurality of camera modules are arranged to realize the collection of the images with different field angles, each camera module can simultaneously collect image data, the image data with different field angles are processed according to needs, and a lens does not need to be moved, so that the zooming speed is high, and the images when the field angles are changed are obtained by directly coding and outputting the collected image data without digital amplification operation, so that the definition of the images is not reduced. The monitoring of different field angles is obtained through the image acquisition of the plurality of camera modules, and the camera modules are switched to different camera modules under different field angle requirements, so that the optical zoom effect is achieved, and high-quality monitoring pictures of different field angles can be obtained.
The camera in the application comprises a plurality of different camera modules, and the angle of view of each camera module is different. As described above, the field angle is related to the focal length of the fixed-focus lens and the size of the target surface of the image sensor, and therefore, for any two different image capturing assemblies, the focal length of the fixed-focus lens and the size of the target surface of the image sensor have three relationships, the first is that the focal length of the fixed-focus lens is the same, but the size of the target surface of the image sensor is different; the second is that the focal lengths of the fixed focus lenses are different, but the sizes of the target surfaces of the image sensors are the same; the third is that the focal lengths of the fixed focus lenses are different, and the sizes of the target surfaces of the image sensors are different. The difference in the angle of view of the image pickup modules means that the horizontal angle of view of the image pickup modules is different, or the vertical angle of view of the image pickup modules is different, or both the horizontal angle of view and the vertical angle of view of the image pickup modules are different. The three relationships are described below with reference to fig. 5 a-5 c.
Fig. 5a is a schematic view of a first angle of view of two image capturing modules according to an embodiment of the present invention, as shown in fig. 5a, the first image capturing module 51 includes a first focusing lens 511 and a first image sensor 512, the focal length of the first focusing lens 511 is f1, the target surface of the first image sensor 512 has a length of a1 and a width of b1, and the first angle of view of the first image capturing module 51 is:
where α 1 is a horizontal angle of view of the first image pickup unit 51, and β 1 is a vertical angle of view of the first image pickup unit 51.
The second camera module 52 includes a second fixed focus lens 521 and a second image sensor 522, the focal length of the second fixed focus lens 521 is f2, the target surface of the second image sensor 522 has a length of a2 and a width of b2, and the field angle of the second camera module 52 is:
where α 2 is the horizontal angle of view of the second image pickup unit 52, and β 2 is the vertical angle of view of the second image pickup unit 52.
Wherein f1 ≠ f2, a1 ≠ a2 or b1 ≠ b 2.
When f1 is f2 and a1 is not equal to a2, the horizontal field angles of the first and second camera modules 51 and 52 are different, and when f1 is f2 and b1 is not equal to b2, the vertical field angles of the first and second camera modules 51 and 52 are different.
Fig. 5b is a schematic view of the angle of view of two image capturing modules according to the embodiment of the present invention, as shown in fig. 5b, the two image capturing modules include a third image capturing module 53 and a fourth image capturing module 54, the third image capturing module 53 includes a third focusing lens 531 and a third image sensor 532, the focal length of the third focusing lens 531 is f3, the length of the target surface of the third image sensor 532 is a3, and the width is b3, then the angle of view of the third image capturing module 53 is:
where α 3 is a horizontal angle of view of the third image pickup unit 53, and β 3 is a vertical angle of view of the third image pickup unit 53.
The fourth image capturing module 54 includes a fourth fixed focus lens 541 and a fourth image sensor 542, the focal length of the fourth fixed focus lens 541 is f4, the target surface of the fourth image sensor 542 has a length a4 and a width b4, and the field angle of the fourth image capturing module 54 is:
where α 4 is a horizontal angle of view of the fourth image pickup unit 54, and β 4 is a vertical angle of view of the fourth image pickup unit 54.
Wherein f3 ≠ f4, a3 ═ a4, or b3 ═ b 4.
When f3 ≠ f4 and a3 ═ a4, the horizontal field angles of view of the third camera module 53 and the fourth camera module 54 are different, and when f3 ≠ f4 and b3 ═ b4, the vertical field angles of view of the third camera module 53 and the fourth camera module 54 are different.
Fig. 5c is a schematic view of a viewing angle of two image capturing modules according to an embodiment of the present invention, as shown in fig. 5c, the two image capturing modules include a fifth image capturing module 55 and a sixth image capturing module 56, the fifth image capturing module 55 includes a fifth focusing lens 551 and a fifth image sensor 552, a focal length of the fifth focusing lens 551 is f5, a length of a target surface of the fifth image sensor 552 is a5, and a width of the target surface is b5, and then the viewing angle of the fifth image capturing module 55 is:
where α 5 is a horizontal angle of view of the fifth image pickup unit 55, and β 5 is a vertical angle of view of the fifth image pickup unit 55.
The sixth camera assembly 56 includes a sixth fixed-focus lens 561 and a sixth image sensor 562, the focal length of the sixth fixed-focus lens 561 is f6, the target surface of the sixth image sensor 562 has a length a6 and a width b6, and the field angle of the sixth camera assembly 56 is:
where α 6 is a horizontal angle of view of the sixth imaging module 56, and β 6 is a vertical angle of view of the sixth imaging module 56.
In this case, f5 ≠ f6, a5 ≠ a6 or b5 ≠ b6, and the horizontal angle of view of the fifth camera module 55 and the sixth camera module 56 are different, and the vertical angle of view of the fifth camera module 55 and the sixth camera module 56 are different.
The corresponding field angles of each camera shooting component of the camera are different, the directions of all fixed-focus lenses of the camera are the same, and the distance between any adjacent camera shooting components is smaller than a preset value. The orientation of each fixed-focus lens is the same, so that the target surfaces of the image sensors can be arranged in parallel, and the obtained pictures are at the same angle. And the distance between any adjacent camera modules is smaller than a preset value, mainly for preventing sudden change of pictures. This part will be described below with reference to fig. 6.
Fig. 6 is a schematic diagram of images obtained by different image capturing assemblies according to an embodiment of the present invention, and as shown in fig. 6, image data obtained by a first image capturing assembly is processed by a camera processing chip to obtain a first image frame 61, and an angle of view of the first image capturing assembly is a first angle of view. The imaging device is characterized in that the imaging device performs imaging by using the second imaging component, the angle of view of the second imaging component is a second angle of view, the directions of the fixed focus lens of the first imaging component and the fixed focus lens of the second imaging component are the same, and the first angle of view is larger than the second angle of view.
If the second camera assembly's focusing lens is co-located with the second camera assembly's focusing lens, the resulting image should be the central portion of the first image frame 61, i.e., the second image frame 62 in fig. 6. However, since the target surfaces of the respective image sensors cannot be in the focal direction of the same lens, the picture actually captured by the second image capturing component is different from the second image picture, and may be, for example, the third image picture 63. The smaller the distance between adjacent camera assemblies, the smaller the difference between the second image screen 62 and the third image screen 63.
After the camera processing chip acquires the multiple paths of image data sent by the multiple camera shooting assemblies, the multiple paths of image data can be processed according to different display parameters to obtain images to be displayed. For example, when a user wants to view an image at a certain angle of view, the camera processing chip acquires display parameters, wherein the display parameters include a target horizontal angle of view and a target vertical angle of view.
Then, a field angle of each image pickup assembly is acquired, which includes a horizontal field angle and a vertical field angle of each image pickup assembly.
And finally, determining the image to be displayed according to the display parameters, the field angle of each camera shooting assembly and the received image data sent by the image sensor in each camera shooting assembly.
Specifically, since a plurality of camera modules in the camera in the present application have a plurality of different angles of view, if the display parameter is the same as the angle of view of a first camera module, the image to be displayed is determined according to image data sent by an image sensor in the first camera module, where the first camera module is one of the plurality of camera modules. For example, if the display parameters are a horizontal field angle of 60 degrees and a vertical field angle of 30 degrees, and the field angle of one of the image capturing assemblies satisfies the horizontal field angle of 60 degrees and the vertical field angle of 30 degrees, the camera processing chip directly processes the image data corresponding to the image capturing assembly to obtain an image to be displayed, and sends the image to the client or the display for displaying.
If the first field area corresponding to the display parameter is larger than a second field area corresponding to the field angle of the second camera shooting assembly and smaller than a third field area corresponding to the field angle of a third camera shooting assembly, determining a first image according to image data sent by an image sensor in the third camera shooting assembly, and determining a partial image corresponding to the first field area in the first image as the image to be displayed.
Specifically, if the angle of view corresponding to the display parameter is not the same as any of the plurality of imaging modules, in order to obtain an image corresponding to the display parameter at this time, it is necessary to select and process image data of the image sensor of the third imaging module, in which the corresponding angle of view exceeds the angle of view corresponding to the display parameter, that is, the horizontal angle of view and/or the vertical angle of view corresponding to the third imaging module exceeds the angle of view corresponding to the display parameter.
For example, the display parameters are 60 degrees in the horizontal view angle and 30 degrees in the vertical view angle, and the image screen corresponding to the third image pickup device will be described below with reference to fig. 7a to 7c as an example. Fig. 7a is a schematic view of an image frame of a third camera module according to an embodiment of the present invention, as shown in fig. 7a, the image frame includes a third field area 701 corresponding to a field angle of the third camera module, and the third field area 701 is processed by a camera processing chip to obtain a corresponding image frame for displaying. In fig. 7a, the horizontal field angle corresponding to the third field area 701 exceeds 60 degrees, and the vertical field angle is 30 degrees, so that the first field area 702 can be determined on the third field area 701 according to the display parameters, and the partial image corresponding to the first field area 702 is determined as the image to be displayed 703 according to the first image sent by the third camera module and the first field area on the third field area 701.
Fig. 7b is a schematic diagram of an image frame of a third camera module according to an embodiment of the present invention, and as shown in fig. 7b, the image frame includes a third field area 711 corresponding to the field angle of the third camera module, and the third field area 711 is processed by a camera processing chip to obtain a corresponding image frame for displaying. In fig. 7a, the horizontal field angle corresponding to the third field area 711 is 60 degrees, and the vertical field angle exceeds 30 degrees, so that the first field area 712 can be determined on the third field area 711 according to the display parameters, and the partial image corresponding to the first field area 712 is determined as the image to be displayed 713 according to the first image sent by the third camera module and the first field area on the third field area 711.
Fig. 7c is a schematic diagram of an image screen of a third camera module according to the embodiment of the present invention, as shown in fig. 7c, the third camera module includes a third field of view area 721 corresponding to the field of view of the third camera module, and the third field of view area 721 is processed by the camera processing chip to obtain a corresponding image screen for display. In fig. 7a, the horizontal field angle corresponding to the third field area 721 exceeds 60 degrees, and the vertical field angle exceeds 30 degrees, so that the first field area 722 can be determined on the third field area 71 according to the display parameters, and the partial image corresponding to the first field area 722 is determined as the image 723 to be displayed according to the first image sent by the third camera module and the first field area on the third field area 721.
Further, there are various ways to obtain the display parameters, including but not limited to directly inputting the horizontal and vertical field angles by the user through the client, or adjusting the change of the horizontal or vertical field angle by the user through the client. This will be explained below with reference to fig. 8 and 9.
Fig. 8 is a schematic diagram of inputting display parameters by a client according to an embodiment of the present invention, and as shown in fig. 8, the display parameter inputting window 82 is located on the client 81 and includes a client 81. In fig. 8, the horizontal angle of view and the vertical angle of view to be viewed may be directly input, and then click determination may be performed, that is, the display parameters may be transmitted to the camera and processed by the camera, so as to obtain an image of the angle of view corresponding to the display parameters. When the input horizontal angle of view and the input vertical angle of view are the same as one of the angles of view of the plurality of image pickup modules, the camera processing chip directly processes the image data transmitted by the image pickup modules to obtain corresponding images, and the corresponding images are displayed on the client or the display. Meanwhile, a plurality of groups of different display parameters can be set on the client in advance, and a user can independently select a group of display parameters to send to the camera besides directly inputting a horizontal field angle and a vertical field angle.
And if the input horizontal field angle and the input vertical field angle are not the same as the field angle of any image pickup assembly, selecting image data sent by any image pickup assembly with the field angle larger than the input field angle to obtain a corresponding image, and intercepting a field area corresponding to the horizontal field angle and the vertical field angle of the display parameter on the image to obtain a corresponding image to be displayed.
Fig. 9 is a schematic diagram of adjusting display parameters by a client according to an embodiment of the present invention, and as shown in fig. 9, the display parameter adjusting window 92 includes a client 91 and is located on the client 91. In fig. 9, adjustment buttons may be provided, for example, an adjustment button is slid upward to increase the horizontal angle of view and an adjustment button is slid downward to decrease the horizontal angle of view under the window of the horizontal angle of view, and the adjustment under the window of the vertical angle of view is similar thereto, and the details thereof are not repeated herein.
Similarly, in the process of adjusting the horizontal angle of view and the vertical angle of view, when the horizontal angle of view and the vertical angle of view at a certain time are equal to the horizontal angle of view and the vertical angle of view corresponding to a certain image pickup assembly, the image data sent by the image pickup assembly is directly processed to obtain the picture to be displayed. And under other conditions, selecting image data with the field angle larger than the field angle corresponding to the display parameters, processing to obtain an image, and intercepting a corresponding area on the image to obtain an image to be displayed.
Besides the user can view the images under different field angles through the client, the user can also perform other processing on the images. In a possible embodiment, if the first field area corresponding to the display parameter is equal to the second field area corresponding to the field angle of the second camera module and is smaller than the third field area corresponding to the field angle of the third camera module, the first image is determined according to the image data sent by the image sensor in the second camera module, and the second image is determined according to the image data sent by the image sensor in the third camera module. And blurring the images except for the partial image corresponding to the first view field area in the second image, and fusing the blurred second image and the first image to obtain the image to be displayed.
Fig. 10 is a schematic diagram of image blurring processing and fusion according to an embodiment of the present invention, as shown in fig. 10, a second image 101 corresponding to the field angle of the second image capture assembly and a third image 102 corresponding to the field angle of the third image capture assembly are included, and a first field of view area 103 corresponding to the display parameter is equal to a second field of view area corresponding to the field angle of the second image capture assembly, that is, a horizontal field of view and a vertical field of view in the display parameter are equal to those of the second image capture assembly. At this time, the corresponding first field of view region 103 in the third image 102 is determined according to the display parameters, and the portion of the third image 102 except the first field of view region 103 is blurred, so as to obtain a blurred third image. And then, fusing and splicing the third image after the fuzzy processing and the second image 101 to obtain an image 104 to be displayed. As can be seen, the field angle of the image to be displayed 104 is the field angle of the third imaging component, wherein the fused and spliced portion of the image to be displayed 104 is obtained by fusing the portion of the third image 102 and the second image 101, and the resolution is higher than that of the original third image 102, so that the details can be seen clearly even under a larger field angle.
Further, if the first field area corresponding to the display parameter is larger than a second field area corresponding to the field angle of the second camera shooting assembly and is smaller than or equal to a third field area corresponding to the field angle of the third camera shooting assembly, performing fusion processing on images in a first image set to obtain the image to be displayed, wherein the first image set comprises image data sent by image sensors in at least two camera shooting assemblies, and the field areas corresponding to the field angles of the at least two camera shooting assemblies are smaller than or equal to the third field area. The process of fusing the images in the first image set specifically includes:
sorting the images in the first image set according to the order of the field of view areas from small to large;
and fusing the content in the ith image in the first image set to the (i + 1) th image, wherein i is 1, 2, … … and N in sequence, and N is the number of images in the first image set.
After the images in the first image set are sorted according to the order of the field of view regions from small to large, for any two adjacent images, the content in the image with the smaller field of view region is fused into the image with the larger field of view region, that is, the content in the ith image is fused into the (i + 1) th image. Then for the (i + 1) th image, the resolution of the part corresponding to the content of the (i) th image is higher than that of the original (i + 1) th image, so that when the part of the image needs to be carefully viewed, the user can slide the client by hand to display the part of the image in an enlarged manner. Because the resolution of the fused image is high, the enlarged and displayed image is clear.
The camera provided by the embodiment of the invention comprises a camera processing chip and a plurality of camera components, wherein each camera component comprises a fixed focus lens and an image sensor, the field angles of different camera components are different, the fixed focus lens and the image sensor in each camera component are arranged oppositely, and the fixed focus lens is used for collecting optical signals and sending the optical signals to the corresponding image sensor; each image sensor is respectively connected with the camera processing chip and is used for processing the received optical signals to obtain image data and sending the image data to the processing chip; the camera processing chip is used for determining an image to be displayed according to the received image data. According to the camera provided by the embodiment of the invention, the plurality of camera modules are arranged to realize the collection of the images with different field angles, each camera module can simultaneously collect image data, the image data with different field angles are processed according to needs, and a lens does not need to be moved, so that the zooming speed is high, and the images when the field angles are changed are obtained by directly coding and outputting the collected image data without digital amplification operation, so that the definition of the images is not reduced. The monitoring of different field angles is obtained through the image acquisition of the plurality of camera modules, and the camera modules are switched to different camera modules under different field angle requirements, so that the optical zoom effect is achieved, and high-quality monitoring pictures of different field angles can be obtained.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A video camera comprising a camera processing chip and a plurality of camera modules, each camera module comprising a fixed focus lens and an image sensor, the different camera modules having different angles of view, including a horizontal angle of view and a vertical angle of view, wherein,
the fixed-focus lens in each camera shooting assembly is arranged opposite to the image sensor, and is used for collecting optical signals and sending the optical signals to the corresponding image sensor;
each image sensor is respectively connected with the camera processing chip and is used for processing the received optical signals to obtain image data and sending the image data to the processing chip;
the camera processing chip is used for determining an image to be displayed according to the received image data.
2. A camera according to claim 1, characterized in that the focal lengths of the prime lenses comprised in different camera modules differ and/or the size of the target surface of the image sensor differs.
3. The camera of claim 1, wherein the fixed focus lenses in the plurality of camera assemblies are oriented in the same direction.
4. The camera of claim 3, wherein a distance between any adjacent ones of the plurality of camera assemblies is less than a predetermined value.
5. The video camera of claim 4, wherein the camera processing chip is specifically configured to:
acquiring display parameters, wherein the display parameters comprise a target horizontal field angle and a target vertical field angle;
acquiring a field angle of each camera shooting assembly, wherein the field angle of each camera shooting assembly comprises a horizontal field angle and a vertical field angle of each camera shooting assembly;
and determining the image to be displayed according to the display parameters, the field angle of each camera shooting assembly and the received image data sent by the image sensor in each camera shooting assembly.
6. The video camera of claim 5, wherein the camera processing chip is specifically configured to:
and if the display parameter is the same as the field angle of a first camera shooting assembly, determining the image to be displayed according to image data sent by an image sensor in the first camera shooting assembly, wherein the first camera shooting assembly is one of the plurality of camera shooting assemblies.
7. The video camera of claim 5, wherein the camera processing chip is specifically configured to:
if the first field area corresponding to the display parameter is larger than a second field area corresponding to the field angle of the second camera shooting assembly and smaller than a third field area corresponding to the field angle of a third camera shooting assembly, determining a first image according to image data sent by an image sensor in the third camera shooting assembly, and determining a partial image corresponding to the first field area in the first image as the image to be displayed.
8. The video camera of claim 4, wherein the camera processing chip is specifically configured to:
if the first field area corresponding to the display parameter is equal to a second field area corresponding to the field angle of the second camera shooting assembly and is smaller than a third field area corresponding to the field angle of a third camera shooting assembly, determining a second image according to image data sent by an image sensor in the second camera shooting assembly, and determining a third image according to image data sent by an image sensor in the third camera shooting assembly;
and blurring the images except for the partial image corresponding to the first view field area in the third image, and fusing the blurred third image and the second image to obtain the image to be displayed.
9. The video camera of claim 4, wherein the camera processing chip is specifically configured to:
if the first view field area corresponding to the display parameter is larger than a second view field area corresponding to the field angle of the second camera shooting assembly and is smaller than or equal to a third view field area corresponding to the field angle of a third camera shooting assembly, performing fusion processing on images in a first image set to obtain the image to be displayed, wherein the first image set comprises image data sent by image sensors in at least two camera shooting assemblies, and the view field areas corresponding to the field angles of the at least two camera shooting assemblies are smaller than or equal to the third view field area.
10. The video camera of claim 9, wherein the camera processing chip is specifically configured to:
if the first view field area corresponding to the display parameter is larger than a second view field area corresponding to the field angle of the second camera shooting assembly and is smaller than or equal to a third view field area corresponding to the field angle of a third camera shooting assembly, sequencing the images in the first image set according to the sequence of the view field areas from small to large;
and fusing the content in the ith image in the first image set to the (i + 1) th image, wherein i is 1, 2, … … and N in sequence, and N is the number of images in the first image set.
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