CN112640421A - Exposure method, exposure device, shooting equipment, movable platform and storage medium - Google Patents
Exposure method, exposure device, shooting equipment, movable platform and storage medium Download PDFInfo
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- CN112640421A CN112640421A CN202080004599.XA CN202080004599A CN112640421A CN 112640421 A CN112640421 A CN 112640421A CN 202080004599 A CN202080004599 A CN 202080004599A CN 112640421 A CN112640421 A CN 112640421A
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- brightness information
- ambient brightness
- shooting device
- determining
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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
- H04N23/676—Bracketing for image capture at varying focusing conditions
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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
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/71—Circuitry for evaluating the brightness variation
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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
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/73—Circuitry for compensating brightness variation in the scene by influencing the exposure time
Abstract
The invention provides an exposure method, an exposure device, a shooting device, a movable platform and a storage medium, wherein the exposure method comprises the following steps: the first shooting device acquires first environment brightness information sensed by the second shooting device, the field angle of the second shooting device is larger than that of the first shooting device, and the first shooting device and the second shooting device are used for shooting the same environment. And the first shooting device determines target environment brightness information corresponding to the current field angle of the first shooting device according to the first environment brightness information, and determines an exposure parameter value corresponding to the first shooting device according to the target environment brightness information. Because the environment brightness information sensed by the second shooting equipment with a larger field angle can reflect the real brightness condition of a wider environment, the exposure parameter of the first shooting equipment is adjusted accordingly, so that the accuracy of adjusting the exposure parameter is ensured while the frequent adjustment of the exposure parameter is avoided.
Description
Technical Field
The present invention relates to the field of cameras, and in particular, to an exposure method and apparatus, a photographing device, a movable platform, and a storage medium.
Background
In many application scenarios, a camera function is used, and devices providing the camera function include a mobile phone, a camera, and the like. In the shooting process, in order to ensure that the brightness of an imaging picture has good visual experience, an exposure process is often necessary, and at present, many shooting devices support an Auto Exposure (AE) function to complete exposure through the AE function.
At present, the camera performs AE in the following manner: the camera collects the ambient brightness, and adjusts exposure parameters such as aperture, shutter, and sensitivity according to the ambient brightness, so that the camera reaches a proper exposure state.
The camera used in many practical application scenarios is a zoom camera, which has a small field angle. In the zooming process, the field angle and the focal length are constantly changed, so that the ambient brightness information collected under different field angles is also frequently changed, and the real ambient brightness condition cannot be accurately reflected, so that the exposure parameters are frequently and inaccurately adjusted.
Disclosure of Invention
The invention provides an exposure method, an exposure device, shooting equipment, a movable platform and a storage medium, which can realize accurate adjustment of camera exposure parameters.
A first aspect of the present invention provides an exposure method applied to a first photographing apparatus, the exposure method including:
acquiring first environment brightness information sensed by second shooting equipment, wherein the field angle of the second shooting equipment is larger than that of the first shooting equipment, and the first shooting equipment and the second shooting equipment are used for shooting the same environment;
determining target environment brightness information corresponding to the current field angle of the first shooting device according to the first environment brightness information;
and determining an exposure parameter value corresponding to the first shooting device according to the target environment brightness information.
A second aspect of the present invention provides an exposure apparatus provided to a first photographing device, the exposure apparatus including: a memory, a processor; wherein the memory has stored thereon executable code that, when executed by the processor, causes the processor to:
acquiring first environment brightness information sensed by second shooting equipment, wherein the field angle of the second shooting equipment is larger than that of the first shooting equipment, and the first shooting equipment and the second shooting equipment are used for shooting the same environment;
determining target environment brightness information corresponding to the current field angle of the first shooting device according to the first environment brightness information;
and determining an exposure parameter value corresponding to the first shooting device according to the target environment brightness information.
A third aspect of the present invention provides a photographing apparatus comprising:
the lens assembly is arranged inside the shell of the shooting equipment;
the sensor module is arranged in the shell and is arranged at the rear end of the lens component, the sensor module comprises a circuit board and an imaging sensor, and the imaging sensor is arranged on the front surface of the circuit board facing the lens component;
the exposure apparatus according to the second aspect is provided inside the housing.
A fourth aspect of the present invention provides a movable platform comprising:
a body;
the power system is arranged on the machine body and used for providing power for the movable platform;
the first shooting device is the shooting device of the third aspect, the angle of view of the second shooting device is larger than that of the first shooting device, and the first shooting device and the second shooting device are used for shooting the same environment.
A fifth aspect of the present invention provides a computer-readable storage medium having stored therein executable code for implementing the exposure method of the first aspect described above.
In the exposure scheme provided by the invention, the first shooting equipment with a smaller field angle and the second shooting equipment with a larger field angle are linked to shoot the same environment. Based on the above, the first shooting device with the smaller field angle determines the target environment brightness information corresponding to the current field angle of the first shooting device by using the first environment brightness information sensed by the second shooting device with the larger field angle, so that the exposure parameter value of the first shooting device is determined according to the target environment brightness information. Because the environment brightness information sensed by the second shooting equipment with a larger field angle can reflect the real brightness condition of a wider environment, the exposure parameter of the first shooting equipment is adjusted accordingly, and the accuracy of exposure parameter adjustment is also ensured while the frequent adjustment of the exposure parameter is avoided.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic flow chart of an exposure method according to an embodiment of the present invention;
fig. 2 is a schematic view of an application scenario of an exposure method according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart of another exposure method according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a relationship between two light metering areas of two shooting devices according to an embodiment of the present invention;
FIG. 5 is a schematic flow chart illustrating another exposure method according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a focusing device according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a shooting device according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a movable platform 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.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Fig. 1 is a schematic flow chart of an exposure method according to an embodiment of the present invention, and as shown in fig. 1, the exposure method may include the following steps:
101. the first shooting device acquires first environment brightness information sensed by the second shooting device, the field angle of the second shooting device is larger than that of the first shooting device, and the first shooting device and the second shooting device are used for shooting the same environment.
102. And the first shooting device determines target environment brightness information corresponding to the current field angle of the first shooting device according to the first environment brightness information.
103. And the first shooting equipment determines an exposure parameter value corresponding to the first shooting equipment according to the target environment brightness information.
In the embodiment of the present invention, the first shooting device and the second shooting device are linked to each other, and can shoot the same environment, and the linkage may be, for example: the first shooting device and the second shooting device are arranged on a movable platform such as an unmanned aerial vehicle. Of course, the first photographing apparatus and the second photographing apparatus may be integrated in other apparatuses to be used together.
Wherein the field angle of the first photographing apparatus is smaller than the field angle of the second photographing apparatus. It will be appreciated that the magnitude relationship of the field of view angle will be: even if the first photographing apparatus and the second photographing apparatus photograph the same environment, the contents of images photographed by the two photographing apparatuses may be different due to a difference in the angle of view. Specifically, the spatial range that can be photographed by the first photographing apparatus having a small angle of view is much smaller than the spatial range that can be photographed by the second photographing apparatus having a large angle of view.
In practical applications, the first photographing device may be a zoom camera and the second photographing device may be a wide-angle camera.
For ease of understanding, an application scenario shown in fig. 2 is described below as an example.
In fig. 2, it is assumed that the first photographing apparatus is a zoom camera and has a field angle of FOV1, and the second photographing apparatus is a wide-angle camera and has a field angle of FOV2, FOV1 being smaller than FOV 2. In practical application, first shooting equipment and second shooting equipment can all be carried on unmanned aerial vehicle. As shown in fig. 2, the spatial range that can be photographed by the first photographing apparatus is much smaller than the spatial range that can be photographed by the second photographing apparatus.
In practical applications, the first shooting device with a smaller field angle is used as a main camera and is mainly used for image acquisition of the surrounding environment. For example, the first photographing device is a zoom camera, and during the operation of the zoom camera, the exposure parameters of the first photographing device need to be continuously adjusted according to the ambient brightness information, so that the finally acquired image has better quality. However, since the focal length is continuously adjusted during the operation of the zoom camera, the angle of view is continuously changed due to the continuous adjustment of the focal length. However, as the field angle changes continuously, the ambient brightness information sensed by the zoom camera also changes frequently, and if the frequently changing ambient brightness information is used as the adjustment basis of the exposure parameters, frequent adjustment of the exposure parameters is inevitably caused. Because the adjustment of the exposure parameters needs a certain time, the zoom camera often cannot accurately respond to the frequent adjustment, and finally the adjustment of the exposure parameters is not matched with the brightness of the real environment, and the imaging quality is finally influenced.
Therefore, in order to overcome this situation, the embodiment of the present invention proposes a scheme of using the second shooting device with a larger field angle to assist the adjustment of the exposure parameter of the first shooting device, that is, the first shooting device adjusts the exposure parameter of the first shooting device by referring to a wider range of ambient brightness information that can be sensed by the second shooting device.
In summary, during the process of working together with the first shooting device and the second shooting device, the second shooting device provides the sensed environment brightness information (for distinction, referred to as first environment brightness information) to the first shooting device, the first shooting device determines the target environment brightness information as the current adjusted exposure parameter according to the first environment brightness information, and finally determines the exposure parameter value which should be adjusted currently according to the target environment brightness information.
The second photographing apparatus may measure the first ambient brightness information through an existing photometry technique. In practical application, when the second shooting device measures the first ambient brightness information, the second shooting device can be in an exposure correct state (without over-exposure and under-exposure phenomena), so as to improve the accuracy of measuring the first ambient brightness information.
Photometry is the measurement of the brightness of a captured picture. Briefly, the second photographing apparatus can start a light metering function (for example, half-press shutter operation is performed automatically, and even after the second photographing apparatus is started, the light metering function is automatically started), incident light can enter a light metering sensor arranged in the second photographing apparatus through components such as a lens of the second photographing apparatus, the light metering sensor is similar to the operation principle of the imaging sensor, an optical signal is converted into an electrical signal, and finally an image picture corresponding to the incident light is obtained. Further, the measurement of the first ambient brightness information is performed in the image by a certain metering mode, and the image brightness value calculated by a certain metering mode may be used as the first ambient brightness information. Common metering modes include, but are not limited to: averaging photometry, center-weighted photometry, partial photometry, spot photometry, and the like.
The second photographing apparatus may provide the first ambient brightness information, even the above-mentioned image or light metering area (referred to as a first light metering area) used for determining the first ambient brightness information to the first photographing apparatus after determining the first ambient brightness information.
In practical applications, there may be a variety of implementation manners for information transmission between the first shooting device and the second shooting device, and the implementation manners are not specifically limited herein and are only examples. For example, the first photographing apparatus and the second photographing apparatus may establish a communication connection through wired or wireless communication, so that the second photographing apparatus transmits the information to the first photographing apparatus through the communication connection. For another example, the first shooting device and the second shooting device are mounted on a movable platform (such as an unmanned aerial vehicle), the movable platform has a processor, a memory and other components, the second shooting device can send the information to the memory of the movable platform, and the first shooting device reads the information from the memory.
The first photographing device may determine, after obtaining the first ambient brightness information, target ambient brightness information corresponding to a current field angle of the first photographing device according to the first ambient brightness information.
Alternatively, determining the target ambient brightness information corresponding to the current field angle of the first shooting device according to the first ambient brightness information may be implemented as: and determining the target ambient brightness information as first ambient brightness information. At this time, the first photographing apparatus may determine the exposure parameter value directly from the first ambient brightness information. In fact, an exposure table may be generated in advance, and the exposure table stores corresponding relations between different pieces of ambient brightness information and exposure parameter values, where the ambient brightness information refers to ambient brightness information sensed by the second photographing apparatus, and the exposure parameter values refer to what values the first photographing apparatus should adjust the exposure parameters to under different pieces of ambient brightness information. Based on the exposure table, the first photographing apparatus may look up the exposure parameter value matching the first ambient brightness information in the exposure table, and adjust, for example, a shutter, an aperture, and sensitivity to correspond to the looked-up exposure parameter value.
When the exposure table is queried, one piece of ambient brightness information matched with the first ambient brightness information is determined from the plurality of pieces of ambient brightness information included in the exposure table, and then the exposure parameter value corresponding to the matched ambient brightness information is determined as the exposure parameter value corresponding to the first ambient brightness information. The ambient brightness information matched with the first ambient brightness information is the ambient brightness information which is the same as or has the smallest difference with the first ambient brightness information.
The determination method of the target environment brightness information corresponding to the first shooting device is not limited to the above example, and other optional methods may be provided, which will be exemplarily described in the following embodiments.
In summary, in an application scenario in which a first shooting device with a smaller field angle is taken as a main camera for shooting, by setting a second shooting device with a larger field angle used in cooperation with the first shooting device, the exposure parameters of the first shooting device can be adjusted with reference to a wider range of first ambient brightness information sensed by the second shooting device with the larger field angle. Even if the field angle of the first shooting device is continuously changed in a short time, the shooting field of view shot by the first shooting device at the field angles actually falls into the shooting field of the same field angle of the second shooting device, so that the first environment brightness information sensed by the second shooting device can be suitable for adjusting the exposure parameters of the first shooting device at different field angles, that is, the slight field angle change of the first shooting device in a short time does not guide the change of the exposure parameter value, thereby avoiding the frequent adjustment of the exposure parameter of the first shooting device, and the exposure parameter adjustment of the first shooting device can more accurately reflect the real brightness condition of the environment, so that the exposure parameter adjustment result of the first shooting device can be more accurate and stable.
Several alternative ways of determining the target ambient brightness information are exemplified below with reference to the following several embodiments.
Fig. 3 is a schematic flow chart of another exposure method according to an embodiment of the present invention, and as shown in fig. 3, the exposure method may include the following steps:
301. the first shooting device obtains a first light metering area sensed by the second shooting device, the field angle of the second shooting device is larger than that of the first shooting device, and the first shooting device and the second shooting device are used for shooting the same environment.
In this embodiment, the first light metering area may be all or a part of the area in the image generated by the light metering sensor of the second photographing apparatus, and the first environment brightness information in the foregoing is obtained by performing brightness calculation on the first light metering area.
302. The first shooting device determines a second light metering area corresponding to the current field angle of the first shooting device from the first light metering area corresponding to the second shooting device according to the relative pose information of the first shooting device and the second shooting device and the current field angle of the first shooting device.
Optionally, a coordinate mapping relationship between an imaging coordinate system corresponding to the first shooting device and an imaging coordinate system corresponding to the second shooting device may be established in advance based on the relative pose information of the first shooting device and the second shooting device. The images can be shot by the first shooting device at different angles of view in advance, and the shot images are mapped to the imaging coordinate system of the second shooting device through the coordinate mapping relation, so that the coordinate ranges of the shot images in the imaging coordinate system of the second shooting device when the first shooting device shoots the images at different angles of view can be obtained through statistics.
Based on this, assuming that the first photographing device is currently at a certain angle of view, a coordinate range corresponding to the image captured at the angle of view in the imaging coordinate system of the second photographing device can be obtained based on the above statistical result, and the coordinate range is located in the first light metering area, that is, the second light metering area corresponding to the current angle of view of the first photographing device.
For convenience of understanding, a relationship between the first light metering region and the second light metering region is illustrated with reference to fig. 4, and as shown in fig. 4, the first light metering region is a region a in the drawing, and the second light metering region is a region B in the region a.
In this embodiment, the first photographing apparatus only needs to locate the second light metering area corresponding to the current field angle of itself in the first light metering area of the second photographing apparatus based on the relative positional relationship between itself and the second photographing apparatus, and the target environment brightness information can be obtained by calculating the brightness value of the second light metering area, which is low in calculation complexity.
303. The first photographing apparatus determines luminance information corresponding to the second light metering area as target environment luminance information.
The first photographing apparatus may calculate an average luminance value of the second light metering area as the target environment luminance information.
304. And the first shooting equipment determines an exposure parameter value corresponding to the first shooting equipment according to the target environment brightness information.
As described above, the above-described exposure table may be formed in advance to determine the exposure parameter value corresponding to the target ambient brightness information based on the exposure table.
Fig. 5 is a schematic flow chart of another exposure method according to an embodiment of the present invention, and as shown in fig. 5, the exposure method may include the following steps:
501. the first shooting device acquires first environment brightness information sensed by the second shooting device, the field angle of the second shooting device is larger than that of the first shooting device, and the first shooting device and the second shooting device are used for shooting the same environment.
502. The first shooting device acquires second ambient brightness information sensed by the first shooting device at the current field angle.
Similar to the principle of measuring the first ambient brightness information by the second photographing device, the first photographing device may also measure the second ambient brightness information corresponding to the current field angle through the same process, which is not described herein again.
503. The first shooting device determines target ambient brightness information according to the first ambient brightness information and the second ambient brightness information.
504. And the first shooting equipment determines an exposure parameter value corresponding to the first shooting equipment according to the target environment brightness information.
Alternatively, determining the target ambient brightness information according to the first ambient brightness information and the second ambient brightness information may be implemented as: the determination target ambient brightness information includes first ambient brightness information and second ambient brightness information. That is, the finally obtained target ambient brightness information is composed of the above two pieces of ambient brightness information.
In this case, two exposure tables may be established in advance, one exposure table including the correspondence between the ambient brightness information measured by the first photographing apparatus and the exposure parameter value, and the other exposure table including the correspondence between the ambient brightness information measured by the second photographing apparatus and the exposure parameter value.
Which exposure table is used to determine the exposure parameter value may be determined according to the degree of difference between the first ambient brightness information and the second ambient brightness information.
Specifically, if the difference between the first ambient brightness information and the second ambient brightness information is greater than a set threshold, the exposure parameter value corresponding to the first shooting device is determined according to the first ambient brightness information. And if the difference value between the first environment brightness information and the second environment brightness information is smaller than a set threshold value, determining an exposure parameter value corresponding to the first shooting device according to the second environment brightness information. That is, when the difference between the first ambient brightness information and the second ambient brightness information is large, the first ambient brightness information measured by the second photographing device is used as the basis, and when the difference between the first ambient brightness information and the second ambient brightness information is small, the first ambient brightness information measured by the first photographing device is used as the basis.
Optionally, the determining the target ambient brightness information according to the first ambient brightness information and the second ambient brightness information may further be implemented as: and determining the target ambient brightness information as a fusion result of the first ambient brightness information and the second ambient brightness information. The fusion means that the finally obtained target environment brightness information is an environment brightness value obtained by calculating the two environment brightness information.
The fusion result may be, for example: a weighted average of the first ambient brightness information and the second ambient brightness information. The weighting coefficients corresponding to the first ambient brightness information and the second ambient brightness information may be preset.
Optionally, the fusion result of the first ambient brightness information and the second ambient brightness information may also be implemented as:
determining a second light metering area corresponding to the current field angle of the first shooting device from a first light metering area corresponding to the second shooting device according to the relative pose information of the first shooting device and the second shooting device and the current field angle of the first shooting device; determining third ambient brightness information corresponding to the second light metering area; and determining the target ambient brightness information as a fusion result of the third ambient brightness information and the second ambient brightness information.
The process of determining the second photometric area from the first photometric area can refer to the description in the other embodiments described above. The fusion result of the third ambient brightness information and the second ambient brightness information may be a weighted average of the two.
The light measuring mode adopted by the third ambient brightness information may be any one of spot light measurement, local light measurement and average light measurement. The light measuring method used by the second ambient brightness zero-degree information may be any one of spot light measurement, local light measurement and average light measurement. The fusion of the two modes can be any combination of the light metering modes so as to meet the requirement of not passing through a scene.
In this implementation manner, the second light metering area corresponding to the current field angle of the first shooting device is located in the first light metering area with a wider range, and third ambient brightness information obtained by the second shooting device in the second light metering area and second ambient brightness information sensed by the first shooting device are taken into comprehensive consideration, so that the first shooting device can obtain more accurate ambient brightness information, and accurate adjustment of the exposure parameters can be performed.
Of course, alternatively, with reference to the logic of the embodiment shown in fig. 3, regarding the second ambient brightness information and the third ambient brightness information obtained in the present embodiment, one of them may be alternatively selected as the target ambient brightness information according to the difference degree between the two.
Fig. 6 is a schematic structural diagram of an exposure apparatus according to an embodiment of the present invention, where the exposure apparatus may be disposed in the first shooting device, as shown in fig. 6, the exposure apparatus includes: memory 11, processor 12. Wherein the memory 11 has stored thereon executable code which, when executed by the processor 12, causes the processor 12 to implement:
acquiring first environment brightness information sensed by second shooting equipment, wherein the field angle of the second shooting equipment is larger than that of the first shooting equipment, and the first shooting equipment and the second shooting equipment are used for shooting the same environment;
determining target environment brightness information corresponding to the current field angle of the first shooting device according to the first environment brightness information;
and determining an exposure parameter value corresponding to the first shooting device according to the target environment brightness information.
Optionally, the processor 12 is specifically configured to: determining a second light metering area corresponding to the current field angle of the first shooting device from a first light metering area corresponding to the second shooting device according to the relative pose information of the first shooting device and the second shooting device and the current field angle of the first shooting device, wherein the first environment brightness information is brightness information corresponding to the first light metering area; and determining brightness information corresponding to the second light metering area as the target environment brightness information.
Optionally, the processor 12 is specifically configured to: and determining the target ambient brightness information as the first ambient brightness information.
Optionally, the processor 12 is specifically configured to: acquiring second ambient brightness information sensed by the first shooting device at a current field angle; and determining the target ambient brightness information according to the first ambient brightness information and the second ambient brightness information.
Optionally, the processor 12 is specifically configured to: determining that the target environment brightness information comprises the first environment brightness information and the second environment brightness information, and if the difference value between the first environment brightness information and the second environment brightness information is greater than a set threshold value, determining an exposure parameter value corresponding to the first shooting device according to the first environment brightness information; and if the difference value between the first environment brightness information and the second environment brightness information is smaller than a set threshold value, determining an exposure parameter value corresponding to the first shooting device according to the second environment brightness information.
Optionally, the processor 12 may be further configured to: and determining the target ambient brightness information as a fusion result of the first ambient brightness information and the second ambient brightness information.
Wherein the processor 12 may specifically be configured to: determining a second light metering area corresponding to the current field angle of the first shooting device from a first light metering area corresponding to the second shooting device according to the relative pose information of the first shooting device and the second shooting device and the current field angle of the first shooting device, wherein the first environment brightness information is brightness information corresponding to the first light metering area; determining third ambient brightness information corresponding to the second light metering region; and determining the target ambient brightness information as a fusion result of the third ambient brightness information and the second ambient brightness information.
Wherein the processor 12 may specifically be configured to: determining the fusion result comprises: a weighted average of the first ambient brightness information and the second ambient brightness information.
Optionally, the first capture device comprises a zoom camera and the second capture device comprises a wide angle camera.
Optionally, the first photographing apparatus and the second photographing apparatus are provided on the same movable platform.
Optionally, the exposure parameter value includes a parameter value of at least one of the following exposure parameters: aperture, shutter, sensitivity.
Fig. 7 is a schematic structural diagram of a shooting device according to an embodiment of the present invention, and as shown in fig. 7, the shooting device includes:
a lens assembly 21, a sensor module 22, and an exposure device 23 as shown in fig. 6.
The lens assembly 21 is disposed inside a housing of the photographing apparatus. And an exposure device 23 provided inside the housing. And a sensor module 22 disposed inside the housing and at the rear end of the lens assembly 21, wherein the sensor module 22 includes a circuit board and an imaging sensor disposed on a front surface of the circuit board facing the lens assembly 21.
The shooting device corresponds to the first shooting device described above, and the execution of the exposure device 23 is described in the foregoing embodiments and will not be described herein.
Fig. 8 is a schematic structural diagram of a movable platform according to an embodiment of the present invention, and in fig. 8, the movable platform is implemented as an unmanned aerial vehicle as an example, but of course, the movable platform may also be implemented as a handheld pan/tilt, a pan/tilt vehicle, an electric bicycle, and the like.
As shown in fig. 8, the movable platform includes: a body 31, a power system 32 provided on the body 31, and a first photographing apparatus 33 and a second photographing apparatus 34 provided on the body 31.
Wherein the power system 32 is used to power the movable platform.
Wherein the first photographing apparatus 33 is a photographing apparatus as shown in fig. 7.
The first photographing apparatus 33 has a smaller field angle than the second photographing apparatus 34, and the first photographing apparatus 33 and the second photographing apparatus 34 are used to photograph the same environment.
The functions and working processes of the first photographing device 33 and the second photographing device 34 can be referred to the descriptions of the other embodiments, which are not described herein.
In addition, when the movable platform is implemented as an unmanned aerial vehicle, as shown in fig. 8, the unmanned aerial vehicle may further include a cradle head 35 disposed on the body 31, so that the first photographing device 33 and the second photographing device 34 may be disposed on the cradle head 35, and the first photographing device 33 and the second photographing device 34 may move relative to the body through the cradle head 35.
The power system 32 of the drone may include an electronic governor, one or more rotors, and one or more motors corresponding to the one or more rotors.
Other devices (not shown in the figure) such as an inertial measurement unit may also be provided on the drone, not listed here.
In addition, the embodiment of the present invention further provides a computer-readable storage medium, where executable codes are stored in the computer-readable storage medium, and the executable codes are used for implementing the exposure method provided in the foregoing embodiments.
The technical solutions and the technical features in the above embodiments may be used alone or in combination without conflict, and all embodiments that fall within the scope of the present invention are equivalent embodiments within the scope of the present invention as long as they do not exceed the knowledge of those skilled in the art.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
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 (27)
1. An exposure method applied to a first photographing apparatus, the exposure method comprising:
acquiring first environment brightness information sensed by second shooting equipment, wherein the field angle of the second shooting equipment is larger than that of the first shooting equipment, and the first shooting equipment and the second shooting equipment are used for shooting the same environment;
determining target environment brightness information corresponding to the current field angle of the first shooting device according to the first environment brightness information;
and determining an exposure parameter value corresponding to the first shooting device according to the target environment brightness information.
2. The method according to claim 1, wherein the determining, according to the first ambient brightness information, target ambient brightness information corresponding to a current field angle of the first photographing device comprises:
determining a second light metering area corresponding to the current field angle of the first shooting device from a first light metering area corresponding to the second shooting device according to the relative pose information of the first shooting device and the second shooting device and the current field angle of the first shooting device, wherein the first environment brightness information is brightness information corresponding to the first light metering area;
and determining brightness information corresponding to the second light metering area as the target environment brightness information.
3. The method according to claim 1, wherein the determining, according to the first ambient brightness information, target ambient brightness information corresponding to a current field angle of the first photographing device comprises:
and determining the target ambient brightness information as the first ambient brightness information.
4. The method according to claim 1, wherein the determining, according to the first ambient brightness information, target ambient brightness information corresponding to a current field angle of the first photographing device comprises:
acquiring second ambient brightness information sensed by the first shooting device at a current field angle;
and determining the target ambient brightness information according to the first ambient brightness information and the second ambient brightness information.
5. The method of claim 4, wherein determining the target ambient brightness information from the first ambient brightness information and the second ambient brightness information comprises:
determining that the target ambient brightness information includes the first ambient brightness information and the second ambient brightness information.
6. The method of claim 5, wherein the determining the exposure parameter value corresponding to the first photographing device according to the target environment brightness information comprises:
if the difference value between the first environment brightness information and the second environment brightness information is larger than a set threshold value, determining an exposure parameter value corresponding to the first shooting device according to the first environment brightness information;
and if the difference value between the first environment brightness information and the second environment brightness information is smaller than a set threshold value, determining an exposure parameter value corresponding to the first shooting device according to the second environment brightness information.
7. The method of claim 4, wherein determining the target ambient brightness information from the first ambient brightness information and the second ambient brightness information comprises:
and determining the target ambient brightness information as a fusion result of the first ambient brightness information and the second ambient brightness information.
8. The method according to claim 7, wherein the determining that the target ambient brightness information is a fusion of the first ambient brightness information and the second ambient brightness information comprises:
determining a second light metering area corresponding to the current field angle of the first shooting device from a first light metering area corresponding to the second shooting device according to the relative pose information of the first shooting device and the second shooting device and the current field angle of the first shooting device, wherein the first environment brightness information is brightness information corresponding to the first light metering area;
determining third ambient brightness information corresponding to the second light metering region;
and determining the target ambient brightness information as a fusion result of the third ambient brightness information and the second ambient brightness information.
9. The method of claim 7, wherein the fused result comprises: a weighted average of the first ambient brightness information and the second ambient brightness information.
10. The method of any of claims 1-9, wherein the first camera comprises a zoom camera and the second camera comprises a wide-angle camera.
11. The method of any one of claims 1 to 9, wherein the first camera and the second camera are provided on the same movable platform.
12. The method according to any one of claims 1 to 9, wherein the exposure parameter values comprise parameter values of at least one exposure parameter selected from the group consisting of:
aperture, shutter, sensitivity.
13. An exposure apparatus, provided in a first photographing device, comprising: a memory, a processor; wherein the memory has stored thereon executable code that, when executed by the processor, causes the processor to:
acquiring first environment brightness information sensed by second shooting equipment, wherein the field angle of the second shooting equipment is larger than that of the first shooting equipment, and the first shooting equipment and the second shooting equipment are used for shooting the same environment;
determining target environment brightness information corresponding to the current field angle of the first shooting device according to the first environment brightness information;
and determining an exposure parameter value corresponding to the first shooting device according to the target environment brightness information.
14. The apparatus of claim 13, wherein the processor is specifically configured to:
determining a second light metering area corresponding to the current field angle of the first shooting device from a first light metering area corresponding to the second shooting device according to the relative pose information of the first shooting device and the second shooting device and the current field angle of the first shooting device, wherein the first environment brightness information is brightness information corresponding to the first light metering area;
and determining brightness information corresponding to the second light metering area as the target environment brightness information.
15. The apparatus of claim 13, wherein the processor is specifically configured to:
and determining the target ambient brightness information as the first ambient brightness information.
16. The apparatus of claim 13, wherein the processor is specifically configured to:
acquiring second ambient brightness information sensed by the first shooting device at a current field angle;
and determining the target ambient brightness information according to the first ambient brightness information and the second ambient brightness information.
17. The apparatus of claim 16, wherein the processor is specifically configured to:
determining that the target ambient brightness information includes the first ambient brightness information and the second ambient brightness information.
18. The apparatus of claim 17, wherein the processor is specifically configured to:
if the difference value between the first environment brightness information and the second environment brightness information is larger than a set threshold value, determining an exposure parameter value corresponding to the first shooting device according to the first environment brightness information;
and if the difference value between the first environment brightness information and the second environment brightness information is smaller than a set threshold value, determining an exposure parameter value corresponding to the first shooting device according to the second environment brightness information.
19. The apparatus of claim 16, wherein the processor is specifically configured to, comprising:
and determining the target ambient brightness information as a fusion result of the first ambient brightness information and the second ambient brightness information.
20. The apparatus of claim 19, wherein the processor is further configured to:
determining a second light metering area corresponding to the current field angle of the first shooting device from a first light metering area corresponding to the second shooting device according to the relative pose information of the first shooting device and the second shooting device and the current field angle of the first shooting device, wherein the first environment brightness information is brightness information corresponding to the first light metering area;
determining third ambient brightness information corresponding to the second light metering region;
and determining the target ambient brightness information as a fusion result of the third ambient brightness information and the second ambient brightness information.
21. The apparatus of claim 19, wherein the fused result comprises: a weighted average of the first ambient brightness information and the second ambient brightness information.
22. The apparatus of any of claims 13-21, wherein the first camera comprises a zoom camera and the second camera comprises a wide-angle camera.
23. The apparatus of any one of claims 13 to 21, wherein the first camera and the second camera are provided on the same movable platform.
24. The apparatus according to any one of claims 13 to 21, wherein the exposure parameter values comprise parameter values of at least one exposure parameter selected from the group consisting of: aperture, shutter, sensitivity.
25. A photographing apparatus, characterized by comprising:
the lens assembly is arranged inside the shell of the shooting equipment;
the sensor module is arranged in the shell and is arranged at the rear end of the lens component, the sensor module comprises a circuit board and an imaging sensor, and the imaging sensor is arranged on the front surface of the circuit board facing the lens component;
the exposure apparatus according to any one of claims 13 to 24, which is provided inside the housing.
26. A movable platform, comprising:
a body;
the power system is arranged on the machine body and used for providing power for the movable platform;
the camera system comprises a body, a first shooting device and a second shooting device, wherein the first shooting device is the shooting device of claim 25, the angle of view of the second shooting device is larger than that of the first shooting device, and the first shooting device and the second shooting device are used for shooting the same environment.
27. A computer-readable storage medium, characterized in that executable code is stored therein, the executable code being used for implementing the exposure method of any one of claims 1 to 12.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| PCT/CN2020/079906 WO2021184239A1 (en) | 2020-03-18 | 2020-03-18 | Exposure method and apparatus, photographing device, movable platform, and storage medium |
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| CN112640421A true CN112640421A (en) | 2021-04-09 |
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