WO2021081909A1 - 拍摄设备的对焦方法、拍摄设备、系统及存储介质 - Google Patents

拍摄设备的对焦方法、拍摄设备、系统及存储介质 Download PDF

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Publication number
WO2021081909A1
WO2021081909A1 PCT/CN2019/114777 CN2019114777W WO2021081909A1 WO 2021081909 A1 WO2021081909 A1 WO 2021081909A1 CN 2019114777 W CN2019114777 W CN 2019114777W WO 2021081909 A1 WO2021081909 A1 WO 2021081909A1
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WIPO (PCT)
Prior art keywords
photographing device
distance
photographing
image
shooting
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PCT/CN2019/114777
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English (en)
French (fr)
Inventor
马宁
陈颖
胡涛
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深圳市大疆创新科技有限公司
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Application filed by 深圳市大疆创新科技有限公司 filed Critical 深圳市大疆创新科技有限公司
Priority to PCT/CN2019/114777 priority Critical patent/WO2021081909A1/zh
Priority to CN201980040175.6A priority patent/CN112352417B/zh
Publication of WO2021081909A1 publication Critical patent/WO2021081909A1/zh

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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
    • H04N23/671—Focus control based on electronic image sensor signals in combination with active ranging signals, e.g. using light or sound signals emitted toward objects

Definitions

  • the embodiments of the present application relate to the field of camera technology, and in particular, to a focusing method of a photographing device, a photographing device, a system, and a storage medium.
  • Small-sized handheld shooting devices such as handheld pan-tilt cameras are an important feature of convenient and fast shooting. Therefore, they are often used in scenes such as snapshots.
  • the auto focus (AF) speed and accuracy of the handheld camera during the capture use have a direct impact on the capture quality, especially for the focus speed. If the handheld camera cannot quickly focus, it will not be available to the user. Provide a smooth and fast shooting experience. Therefore, for some handheld shooting devices with small size, limited processing power and relatively slow focusing speed, how to improve handheld shooting without increasing the size and cost of the handheld shooting device itself
  • the focusing speed of the equipment is a technical problem that needs to be solved urgently at present.
  • the embodiments of the present application provide a focusing method, a photographing device, a system, and a storage medium of a photographing device, so as to improve the focusing speed of the photographing device.
  • the first aspect of the embodiments of the present application is to provide a focusing method of a photographing device.
  • the method includes: receiving a first distance detected by a second photographing device, and obtaining the difference between the target focus and the first photographing device determined based on the first distance.
  • the second distance between the two, based on the second distance, the target focus object in the second image collected by the first shooting device is photographed, where the first distance is the target focus object in the first image collected by the second shooting device
  • the calculation processing speed of the second photographing device is faster than the calculation processing speed of the first photographing device.
  • a second aspect of the embodiments of the present application is to provide a focusing method of a photographing device.
  • the method includes: receiving a first distance detected by a second photographing device, and obtaining the difference between a target focus object and the first photographing device determined based on the first distance. Based on the second distance, the CDAF focusing method is used to focus the target focus object in the second image captured by the first shooting device, where the first distance is the first image captured by the second shooting device The calculation processing speed of the second photographing device is faster than the calculation processing speed of the first photographing device.
  • the third aspect of the embodiments of the present application is to provide a photographing device, which includes:
  • the camera is used to collect images; the communication interface is used to communicate with the second shooting device; one or more processors, which work alone or in cooperation, and the processors are used to: receive the detected data from the second shooting device
  • the first distance is the distance between the target focus object in the first image collected by the second shooting device and the second shooting device, and the distance between the target focus object and the shooting device determined based on the first distance is obtained
  • the second distance is to shoot the target focus object in the second image collected by the shooting device based on the second distance, wherein the calculation processing speed of the second shooting device is faster than the calculation processing speed of the shooting device.
  • the fourth aspect of the embodiments of the present application is to provide a photographing device, which includes:
  • the camera is used to collect images; the communication interface is used to communicate with the second shooting device; one or more processors, which work alone or in cooperation, and the processors are used to: receive the detected data from the second shooting device The first distance, the first distance is the distance between the target focus object in the first image collected by the second shooting device and the second shooting device, and the distance between the target focus object and the shooting device determined based on the first distance is obtained Based on the second distance, the CDAF focusing method is used to focus the target focus object in the second image collected by the shooting device, wherein the calculation processing speed of the second shooting device is faster than the calculation processing of the shooting device speed.
  • the fifth aspect of the embodiments of the present application is to provide a photographing system, including: a first photographing device, and a second photographing device fixedly connected to the first photographing device.
  • the first photographing device is The method of the first aspect or the second aspect described above is executed with the aid of a device.
  • a sixth aspect of the embodiments of the present invention is to provide a computer-readable storage medium on which a computer program is stored, and the computer program is executed by a processor to implement the method described in the first aspect or the second aspect.
  • the second photographing device that is faster than the first photographing device detects the first distance between the target focused object and the second photographing device through calculation processing speed, and obtains the distance between the target focused object and the first photographing device determined based on the first distance Based on the second distance, the target focus object in the second image collected by the first camera is captured based on the second distance, and the second camera with a higher calculation processing speed is implemented to assist the second camera with a slower calculation processing speed.
  • the purpose of focusing by a photographing device increases the focusing speed of the first photographing device and can provide users with a smooth and fast photographing experience.
  • FIG. 1 is a schematic structural diagram of a photographing system provided by an embodiment of the present application.
  • FIG. 2 is a flowchart of a focusing method of a photographing device according to an embodiment of the present application
  • FIG. 3 is a schematic diagram of a method for determining a target focus object provided by an embodiment of the present application
  • FIG. 4 is a schematic diagram of a display interface provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a display interface provided by an embodiment of the present application.
  • FIG. 6 is a flowchart of a focusing method of a photographing device according to an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a photographing device provided by an embodiment of the present application.
  • a component when referred to as being "fixed to” another component, it can be directly on the other component or a central component may also exist. When a component is considered to be “connected” to another component, it can be directly connected to the other component or there may be a centered component at the same time.
  • FIG. 1 is a schematic structural diagram of a photographing system provided by an embodiment of the present application.
  • the photographing system includes a handheld pan/tilt camera 11 and a mobile terminal 12, where mobile The calculation processing speed of the terminal 12 is faster than that of the handheld pan/tilt camera 11.
  • the mobile terminal 12 is connected to the handheld pan/tilt camera 11, and the relative position relationship between the mobile terminal 12 and the handheld pan/tilt camera 11 is stored in the mobile terminal 12, respectively.
  • handheld PTZ camera 11 handheld PTZ camera 11.
  • the first distance between the target focus object and the mobile terminal 12 is obtained through the mobile terminal 12, and the first distance between the target focus object and the mobile terminal 12, and the mobile terminal 12 and the handheld pan/tilt camera
  • the relative position relationship between 11 determines the second distance between the target focus and the handheld pan/tilt camera 11, and the handheld pan/tilt camera 11 uses the second distance to focus and photograph the target focus.
  • the photographing system shown in FIG. 1 is only an exemplary photographing system provided by the embodiment of the present application.
  • the handheld pan/tilt camera 11 can be replaced with any one with a smaller volume and a computational processing
  • the mobile terminal 12 can be replaced with a first photographing device with weaker capability and relatively slow focusing speed with any second photographing device that has a photographing function and has a faster calculation processing speed than the above-mentioned first photographing device.
  • FIG. 2 is a flowchart of a focusing method of a photographing device according to an embodiment of the present application. As shown in FIG. 2, the method includes:
  • Step 201 Receive a first distance detected by a second photographing device, where the first distance is a distance between a target focus object in a first image collected by the second photographing device and the second photographing device.
  • first photographing device and “second photographing device” is only used to distinguish photographing devices and does not have other meanings.
  • the calculation processing speed of the second photographing device is faster than the calculation processing speed of the first photographing device.
  • the first photographing device may Built-in focusing methods that require low computing processing capabilities and slow focusing speeds, such as Contrast Detection AF (CDAF), etc.
  • CDAF Contrast Detection AF
  • the second camera device can be built in with relatively high computing power requirements, focusing speed Faster focusing methods, for example, a combination of Phase Detection AF (PDAF) and CDAF, or active focusing methods, among which, in the active focusing method, the infrared camera mounted on the second camera can be used.
  • At least one of a sensor, an ultrasonic sensor, a laser sensor, or a binocular camera detects the first distance between the target focus and the second imaging device, or in some embodiments, structured light or time of flight (Time of Flight) may also be used. Flight, TOF for short) and other methods are used to detect the distance between the target focus and the second photographing device.
  • a sensor an ultrasonic sensor, a laser sensor, or a binocular camera detects the first distance between the target focus and the second imaging device, or in some embodiments, structured light or time of flight (Time of Flight) may also be used. Flight, TOF for short) and other methods are used to detect the distance between the target focus and the second photographing device.
  • Time of Flight Time of Flight
  • the first photographing device corresponds to the handheld pan/tilt camera in the system of FIG. 1
  • the second photographing device corresponds to the mobile terminal in the system of FIG. 1.
  • the mobile terminal and the handheld pan/tilt camera pass through The preset interface is fixedly connected.
  • the handheld pan/tilt camera displays the second image containing the target focus object collected by its own camera
  • the mobile terminal displays the first image containing the target focus object collected by its own camera
  • the user passes Tap or other preset methods to select the target focus from the first image or the second image.
  • the mobile terminal uses its built-in focus method (for example, a combination of PDAF and CDAF) (Or active focusing method) to obtain the first distance between the target focus object and the mobile terminal.
  • the handheld pan/tilt camera will The position of the target focus object in the second image is sent to the mobile terminal.
  • the mobile terminal After receiving the position, the mobile terminal uses the pre-calibrated relative position relationship between the handheld pan/tilt camera and the mobile terminal, as well as the mobile terminal and the handheld pan/tilt camera.
  • the parameter information of the camera is mapped to the first image 32 collected by itself, and the corresponding target focus object A'in the first image 32 is obtained.
  • the mobile terminal uses its built-in focus Way (for example, a combination of PDAF and CDAF or an active focus method) to obtain the first distance between the target focus object and the mobile terminal.
  • built-in focus Way for example, a combination of PDAF and CDAF or an active focus method
  • the handheld pan/tilt camera may also be based on The relative position relationship between it and the mobile terminal determines the position of the target focus object in the second image, and sends the position to the mobile terminal so that the mobile terminal can detect the first distance between the target focus object and the mobile terminal according to the position .
  • the mobile terminal has a larger display screen than the handheld pan/tilt camera.
  • the handheld pan/tilt camera sends the second image collected by itself to the mobile terminal.
  • the mobile terminal displays the second image in the first area of its own display screen, and displays the first image collected by its own camera in the second area of its own display screen, or, as shown in FIG. 5, the display screen of the mobile terminal All are used to display the second image of the handheld PTZ camera, not the first image of itself.
  • the user selects the target focus on the display screen of the mobile terminal, the mobile terminal detects the first distance between itself and the target focus, and sends the detected first distance to the handheld pan/tilt camera.
  • Step 202 Obtain a second distance between the target focus object and the first photographing device determined based on the first distance.
  • the first photographing device and/or the second photographing device have pre-stored the relative positional relationship between the device itself and other photographing devices.
  • the relative positional relationship between the device itself and other photographing devices may be The interface type determines the type or model of other photographing devices that can be fixed to the first photographing device, pre-calibrates and stores the relative positional relationship between these photographing devices and the first photographing device after being connected to the first photographing device, when After a photographing device is connected to the first photographing device, the first photographing device obtains the type or model of the photographing device connected to it, and searches for the relative position relationship between it and the device according to the type or model of the device.
  • the second distance between the first photographing device and the target object can be calculated by the second photographing device. Specifically, after the second photographing device obtains the first distance between itself and the target focus, the first distance is converted into the target according to the pre-calibrated relative position relationship between the second photographing device and the first photographing device. The second distance between the focus object and the first photographing device, and the first photographing device obtains the second distance from the second photographing device. Since the calculation processing speed of the second photographing device is faster than the calculation processing speed of the first photographing device, the second distance can be calculated in a shorter time by the second photographing device, which improves the calculation efficiency of the second distance.
  • the second distance between the first photographing device and the target focus can be calculated by the first photographing device. Specifically, after the second photographing device detects the first distance between the target object and the second photographing device, the first distance is sent to the first photographing device, and the first photographing device determines the relationship between the first photographing device and the second photographing device. The relative position relationship between the photographing devices is calculated to obtain the second distance between the target focus and the first photographing device.
  • the relative positional relationship between the first photographing device and the second photographing device can be exemplarily understood as the relative positional relationship between the camera of the first photographing device and the camera of the second photographing device; or It can be exemplarily understood as the relative positional relationship between the center position of the first photographing device and the center position of the second photographing device.
  • the relative position relationship between the camera and the center position of the device in the device the relative position relationship between the center position of the first shooting device and the second shooting device is converted into the relative position relationship between the cameras, and then according to the relative position between the cameras The relationship converts the first distance to the second distance.
  • the relative position relationship may include the translation and rotation relationship between the two.
  • Step 203 Shoot the target focus object in the second image collected by the first shooting device based on the second distance.
  • the first camera After the first camera acquires the second distance to the target focus object, it calculates the position and movement direction of the focus motor according to the preset correspondence between the object distance and the motor position, so as to calculate the position and movement direction of the focus motor according to the calculated position and The movement direction controls the operation of the focus motor.
  • the focus motor moves to the corresponding position, the target focus object is photographed.
  • the first distance between the target focus object in the first image collected by the second shooting device and the second shooting device is detected by the second shooting device whose processing speed is faster than that of the first shooting device, and the determination based on the first distance is obtained
  • the target focus object in the second image collected by the first shooting device is captured based on the second distance, which achieves a higher processing speed based on calculation
  • the second photographing device assists the first photographing device with a slower calculation processing speed for focusing purposes, improves the focusing speed of the first photographing device, and can provide users with a smooth and fast photographing experience.
  • FIG. 6 is a flowchart of a focusing method of a photographing device according to an embodiment of the present application. As shown in FIG. 6, the method includes the following steps:
  • Step 601 Receive a first distance detected by a second shooting device, where the first distance is a distance between a target focus object in a first image collected by the second shooting device and the second shooting device.
  • Step 602 Obtain a second distance between the target focus object and the first photographing device determined based on the first distance.
  • Step 603 Based on the second distance, use a CDAF focusing method to focus the target focus object in the second image collected by the first shooting device.
  • the calculation processing speed of the second photographing device is faster than the calculation processing speed of the first photographing device.
  • the second shooting device and the first shooting device are fixedly connected, images of the same scene are collected at the same time.
  • the images collected by the first shooting device are called second images, and the images collected by the second shooting device are called It is the first image, and both the first image and the second image include the same target focus object.
  • the first shooting device captures the second image, it sends the second image to the second shooting device, and the second shooting device displays the second image in the first area of its own display screen, and displays it in the second area of its own display screen
  • the user selects the target focus object in the first image or the second image
  • the second shooting device detects the difference between the target focus object and the second shooting device itself in the actual environment according to the target focus object selected by the user.
  • the first distance and based on the pre-stored relative position relationship between itself and the first shooting device, the first distance is mapped to the second distance between the target focus and the first shooting device, and the first shooting device starts from the second
  • the second distance is acquired in the shooting device, and the position and moving direction of the focus motor are adjusted based on the second distance to achieve preliminary focusing on the target focus.
  • the built-in CDAF focusing method is used to combine the preliminary focusing results. Focus processing, to achieve precise focus on the target focus.
  • the first photographing device may also send the focused image to the second photographing device for display, so that the focusing result can be intuitively displayed to the user.
  • the first shooting device is able to pair up based on the second distance.
  • Preliminary focusing of the target focus, and focusing processing on the preliminary focusing result based on the CDAF focusing method not only improves the focusing speed of the first camera, but also ensures the accuracy of the first camera's focusing.
  • FIG. 7 is a schematic structural diagram of a photographing device provided by an embodiment of the present application.
  • the photographing device can be exemplarily understood as a photographing device with a small volume and a relatively slow calculation processing speed, such as a handheld pan-tilt camera. As shown in FIG.
  • the shooting device 70 includes a camera 71 for capturing images; a communication interface 72 is used to communicate with the second shooting device 74; one or more processors 73, each of which works individually or cooperatively, the processor 73 It is used to: receive the first distance detected by the second photographing device 74, where the first distance is the distance between the target focus object in the first image collected by the second photographing device and the second photographing device, and the acquisition is based on the first The second distance between the target focus object and the shooting device 70 determined by the distance, and the target focus object in the second image from the shooting device 70 is shot based on the second distance; wherein the calculation processing speed of the second shooting device is faster than The calculation processing speed of the photographing device.
  • the communication interface 72 is fixedly connected to the second photographing device.
  • the imaging device 70 has a built-in contrast detection focusing CDAF focusing method.
  • the first distance is detected by the second photographing device using a phase detection focusing method combining PDAF and CDAF.
  • the first distance is detected by the second photographing device using an active focus method.
  • the processor 73 before receiving the first distance detected by the second photographing device, the processor 73 is further configured to:
  • the second image collected by the shooting device 70 is sent to the second shooting device for display, so that the second shooting device detects the first distance based on the first image after the user selects the target focus from the second image.
  • the second image is displayed in the first area on the second photographing device, and the first image is displayed in the second area on the second photographing device.
  • the photographing device provided in this embodiment can be used to execute the method of the embodiment in FIG. 2, and its execution manner and beneficial effects are similar, and will not be repeated here.
  • the embodiment of the present application also provides a shooting device, the shooting device includes a camera for collecting images; a communication interface for communicating with the second shooting device; one or more processors, the one or more processors Working alone or in cooperation, the processor is configured to: receive a first distance detected by the second shooting device, where the first distance is the distance between the target focus object in the first image collected by the second shooting device and the second shooting device Distance; acquiring the second distance between the target focus object and the shooting device determined based on the first distance; based on the second distance, using the CDAF focusing method to focus the target focus object in the second image collected by the shooting device; wherein, The calculation processing speed of the second photographing device is faster than the calculation processing speed of the photographing device provided in the embodiment of the present application.
  • the communication interface is used for fixed connection with the second photographing device.
  • the processor uses a CDAF focusing method to focus the target focus object in the second image collected by the shooting device based on the second distance, and then is further configured to obtain the focus The image of is sent to the second photographing device for display.
  • the processor before the processor receives the first distance detected by the second photographing device, it is further configured to: send the second image collected by the photographing device to the second photographing device.
  • the device displays, so that the second shooting device obtains the first distance based on the first image detection after the user selects the target focus from the second image.
  • the second image is displayed in a first area on the second photographing device, and the first image is displayed in a second area on the second photographing device.
  • the photographing device provided in this embodiment can be used to execute the method of the embodiment in FIG. 6, and its execution manner and beneficial effects are similar and will not be repeated here.
  • the embodiment of the present application also provides a photographing system.
  • the photographing system includes a first photographing device and a second photographing device fixedly connected to the first photographing device.
  • the first photographing device is assisted by the second photographing device.
  • the focusing method described in the foregoing embodiment is executed below, wherein the first photographing device may include a handheld pan-tilt camera.
  • this embodiment also provides a computer-readable storage medium on which a computer program is stored, and the computer program is executed by a processor to implement the focusing method described in the foregoing embodiment.
  • the disclosed device and method can be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit may be implemented in the form of hardware, or may be implemented in the form of hardware plus software functional units.
  • the above-mentioned integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium.
  • the above-mentioned software functional unit is stored in a storage medium and includes several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) execute the method described in the various embodiments of the present invention. Part of the steps.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

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Abstract

本申请实施例提供一种拍摄设备的对焦方法、拍摄设备、系统及存储介质，该方法通过计算处理速度快于第一拍摄设备的第二拍摄设备检测目标对焦物与第二拍摄设备之间的第一距离，并获取基于第一距离确定的该目标对焦物与第一拍摄设备之间的第二距离，基于第二距离对第一拍摄设备采集到的第二影像中的该目标对焦物进行拍摄，实现了基于计算处理速度更高的第二拍摄设备协助计算处理速度较慢的第一拍摄设备进行对焦的目的，提高了第一拍摄设备的对焦速度。

Description

拍摄设备的对焦方法、拍摄设备、系统及存储介质 技术领域
本申请实施例涉及相机技术领域，尤其涉及一种拍摄设备的对焦方法、拍摄设备、系统及存储介质。
背景技术
诸如手持云台相机等体积较小的手持拍摄设备，拍摄方便快捷是其重要的特点，因此，经常被应用在抓拍等场景中。在抓拍使用时手持拍摄设备的自动对焦(auto focus，简称AF)速度和准确性对抓拍质量有着直接影响，尤其是对于对焦速度来说，如果手持拍摄设备无法快速完成对焦，那么将无法给用户提供流畅、快速的拍摄体验，因此，针对一些体积较小、处理能力有限，对焦速度相对较慢的手持拍摄设备来说，如何在不增加手持拍摄设备本身体积和成本的前提下，提高手持拍摄设备的对焦速度，是当前亟需解决的技术问题。
发明内容
本申请实施例提供一种拍摄设备的对焦方法、拍摄设备、系统及存储介质，用以提高拍摄设备的对焦速度。
本申请实施例的第一方面是提供一种拍摄设备的对焦方法，该方法包括：接收第二拍摄设备检测到的第一距离，获取基于第一距离确定的目标对焦物与第一拍摄设备之间的第二距离，基于第二距离对第一拍摄设备采集到的第二影像中的目标对焦物进行拍摄，其中，第一距离为第二拍摄设备采集到的第一影像中的目标对焦物与第二拍摄设备之间的距离，第二拍摄设备的计算处理速度快于第一拍摄设备的计算处理速度。
本申请实施例的第二方面是提供一种拍摄设备的对焦方法，该方法包括：接收第二拍摄设备检测到的第一距离，获取基于第一距离确定的目标对焦物与第一拍摄设备之间的第二距离，基于第二距离，采用CDAF对焦方式对第一拍摄设备采集到的第二影像中的目标对焦物进行对焦，其中， 第一距离为第二拍摄设备采集到的第一影像中的目标对焦物与第二拍摄设备之间的距离，第二拍摄设备的计算处理速度快于第一拍摄设备的计算处理速度。
本申请实施例的第三方面是提供一种拍摄设备，该拍摄设备包括：
摄像头，用于采集影像；通讯接口，用于与第二拍摄设备通信连接；一个或多个处理器，该些处理器单独或协同工作，该些处理器用于：接收第二拍摄设备检测到的第一距离，第一距离为第二拍摄设备采集到的第一影像中的目标对焦物与第二拍摄设备之间的距离，获取基于第一距离确定的目标对焦物与所述拍摄设备之间的第二距离，基于第二距离对所述拍摄设备采集到的第二影像中的目标对焦物进行拍摄，其中，第二拍摄设备的计算处理速度快于拍摄设备的计算处理速度。
本申请实施例的第四方面是提供一种拍摄设备，该拍摄设备包括：
摄像头，用于采集影像；通讯接口，用于与第二拍摄设备通信连接；一个或多个处理器，该些处理器单独或协同工作，该些处理器用于：接收第二拍摄设备检测到的第一距离，第一距离为第二拍摄设备采集到的第一影像中的目标对焦物与第二拍摄设备之间的距离，获取基于第一距离确定的目标对焦物与所述拍摄设备之间的第二距离，基于第二距离，采用CDAF对焦方式对所述拍摄设备采集到的第二影像中的目标对焦物进行对焦，其中，第二拍摄设备的计算处理速度快于拍摄设备的计算处理速度。
本申请实施例的第五方面是提供一种拍摄系统，包括：第一拍摄设备，以及与第一拍摄设备固定连接的第二拍摄设备，在执行拍摄操作时，第一拍摄设备在第二拍摄设备的辅助下执行上述第一方面或者第二方面的方法。
本发明实施例的第六方面是提供一种计算机可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行以实现上述第一方面或者第二方面所述的方法。
通过计算处理速度快于第一拍摄设备的第二拍摄设备检测目标对焦物与第二拍摄设备之间的第一距离，并获取基于第一距离确定的该目标对焦物与第一拍摄设备之间的第二距离，基于第二距离对第一拍摄设备采集到的第二影像中的该目标对焦物进行拍摄，实现了基于计算处理速度更高 的第二拍摄设备协助计算处理速度较慢的第一拍摄设备进行对焦的目的，提高了第一拍摄设备的对焦速度，能够为用户提供流畅、快速的拍照体验。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1是本申请实施例提供的一种拍摄系统的结构示意图；
图2是本申请实施例提供的一种拍摄设备的对焦方法的流程图；
图3是本申请实施例提供的一种确定目标对焦物的方法示意图；
图4是本申请实施例提供的一种显示界面示意图；
图5是本申请实施例提供的一种显示界面示意图；
图6是本申请实施例提供的一种拍摄设备的对焦方法的流程图；
图7是本申请实施例提供的一种拍摄设备的结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
需要说明的是，当组件被称为“固定于”另一个组件，它可以直接在另一个组件上或者也可以存在居中的组件。当一个组件被认为是“连接”另一个组件，它可以是直接连接到另一个组件或者可能同时存在居中组件。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在本申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请。本文所使用的术语“及/或”包括一个或多个相关的所列项目的任意的和所有的组合。
下面结合附图，对本申请的一些实施方式作详细说明。在不冲突的情 况下，下述的实施例及实施例中的特征可以相互组合。
本申请实施例提供一种对焦方案，图1是本申请实施例提供的一种拍摄系统的结构示意图，如图1所示，该拍摄系统包括手持云台相机11和移动终端12，其中，移动终端12的计算处理速度快于手持云台相机11的计算处理速度，移动终端12和手持云台相机11连接，移动终端12与手持云台相机11之间的相对位置关系分别存储在移动终端12和手持云台相机11中。在抓拍等拍摄场景中，通过移动终端12获取目标对焦物与移动终端12之间的第一距离，根据目标对焦物与移动终端12之间的第一距离，以及移动终端12与手持云台相机11之间的相对位置关系，确定目标对焦物与手持云台相机11之间的第二距离，手持云台相机11采用第二距离对目标对焦物进行对焦和拍摄。当然图1所示的拍摄系统仅为本申请实施例提供的一种示例性的拍摄系统，实际上，在其他实施例中手持云台相机11可被替换为任意一种体积较小，计算处理能力较弱，对焦速度相对较慢的第一拍摄设备，移动终端12可被替换为任意一种具有拍摄功能，且计算处理速度快于上述第一拍摄设备的第二拍摄设备。
下面结合示例性的实施例对本申请提供的对焦方案进行阐述。
图2是本申请实施例提供的一种拍摄设备的对焦方法的流程图，如图2所示，该方法包括：
步骤201、接收第二拍摄设备检测到的第一距离，所述第一距离为所述第二拍摄设备采集到的第一影像中的目标对焦物与所述第二拍摄设备之间的距离。
在本实施例中“第一拍摄设备”和“第二拍摄设备”的命名仅用于对拍摄设备进行区分而不具有其他含义。
在本实施例中，第二拍摄设备的计算处理速度快于第一拍摄设备的计算处理速度，相应的，为了匹配第二拍摄设备和第一拍摄设备的计算处理能力，第一拍摄设备中可以内置对计算处理能力要求较低，对焦速度较慢的对焦方式，比如，对比度检测对焦(Contrast Detection AF，简称CDAF)方式等，第二拍摄设备中可以内置对计算能力要求相对较高，对焦速度较快的对焦方式，比如，相位检测对焦(Phase Detection AF，简称PDAF) 和CDAF相结合的方式，或者主动对焦方式等，其中，在主动对焦方式中，可以通过第二拍摄设备上搭载的红外传感器、超声传感器、激光传感器或者双目摄像头中的至少一个检测得到目标对焦物与第二拍摄设备之间的第一距离，或者在一些实施方式中，还可以采用结构光或者飞行时间(Time of Flight，简称TOF)等方式检测得到目标对焦物与第二拍摄设备之间的距离。
以图1所示的拍摄系统为例，假设第一拍摄设备对应为图1系统中的手持云台相机，第二拍摄设备对应为图1系统中的移动终端，移动终端和手持云台相机通过预设的接口固定连接。
在对某一物体(即本实施所称的目标对焦物)进行拍摄时：
一种可行的实施方式，手持云台相机对自身摄像头采集到的包含目标对焦物的第二影像进行显示，移动终端对自身摄像头采集到的包含该目标对焦物的第一影像进行显示，用户通过点触或其他预设方式从第一影像或第二影像中选中目标对焦物，当用户在第一影像中选中目标对焦物后，移动终端通过其内置的对焦方式(比如、PDAF和CDAF相结合的方式或者主动对焦的方式)获得目标对焦物体与移动终端之间的第一距离，示例的，如图3所示当用户在第二影像31中选择目标对焦物A后，手持云台相机将目标对焦物在第二影像中的位置发送给移动终端，移动终端在接收到该位置后，根据预先标定的手持云台相机与移动终端之间的相对位置关系，以及移动终端和手持云台相机的摄像头的参数信息，将该位置映射到自身采集的第一影像32中，得到第一影像32中对应的目标对焦物A’，在得到目标对焦物A’之后，移动终端通过其内置的对焦方式(比如、PDAF和CDAF相结合的方式或者主动对焦的方式)获得目标对焦物体与移动终端之间的第一距离，当然这里仅是给出了一种用于获得第一距离的示例性的方法并不是对获取第一距离的方法的唯一限定，实际上，在其他实施方式中，当用户在手持云台相机显示的第二影像上选择目标对焦物后，也可以由手持云台相机根据其与移动终端之间的相对位置关系，确定目标对焦物在第二影像中的位置，并将该位置发送给移动终端，以使移动终端根据该位置检测目标对焦物与移动终端的第一距离。
在另一种可行的实施方式中，移动终端相较于手持云台相机具有更大 的显示屏，示例的，如图4所示，手持云台相机将自身采集获得的第二影像发送给移动终端，移动终端在自身显示屏的第一区域中显示第二影像，在自身显示屏的第二区域中显示自身摄像头采集得到的第一影像，或者，如图5所示，移动终端的显示屏全部用于显示手持云台相机的第二影像，不显示自身的第一影像。用户在移动终端的显示屏上选择目标对焦物，移动终端检测自身与该目标对焦物之间的第一距离，并将检测得到的第一距离发送给手持云台相机。
步骤202、获取基于所述第一距离确定的所述目标对焦物与第一拍摄设备之间的第二距离。
在本实施例中，第一拍摄设备和/或第二拍摄设备中预先存储有设备本身与其他拍摄设备之间的相对位置关系，比如在第一拍摄设备中，可以根据第一拍摄设备上的接口类型确定可与第一拍摄设备固接的其他拍摄设备的类型或型号，预先标定并存储该些拍摄设备在连接到第一拍摄设备上之后与第一拍摄设备之间的相对位置关系，当有拍摄设备连接到第一拍摄设备上之后，第一拍摄设备获取与其连接的拍摄设备的类型或型号，根据设备的类型或型号查找获得其与该设备之间的相对位置关系。
基于上述相对位置关系，在本实施例的一种实施方式中，第一拍摄设备与目标对焦物之间的第二距离可由第二拍摄设备计算获得。具体的，当第二拍摄设备获得到其自身与目标对焦物之间的第一距离之后，根据预先标定的第二拍摄设备与第一拍摄设备之间的相对位置关系将第一距离转换为目标对焦物与第一拍摄设备之间的第二距离，第一拍摄设备从第二拍摄设备中获取该第二距离。由于第二拍摄设备的计算处理速度快于第一拍摄设备的计算处理速度，因此通过第二拍摄设备能够在较短的时间内计算得到第二距离，提高了第二距离的计算效率。在本实施例的另一种实施方式中，第一拍摄设备与目标对焦物之间的第二距离可由第一拍摄设备计算获得。具体的，第二拍摄设备在检测到目标对焦物与第二拍摄设备之间的第一距离后，将第一距离发送给第一拍摄设备，由第一拍摄设备根据第一拍摄设备与第二拍摄设备之间的相对位置关系，计算得到目标对焦物与第一拍摄设备之间的第二距离。
在本实施例中，第一拍摄设备与第二拍摄设备之间的相对位置关系， 可示例性的理解为第一拍摄设备的摄像头与第二拍摄设备的摄像头之间的相对位置关系；或者也可以示例性的理解为第一拍摄设备的中心位置与第二拍摄设备的中心位置之间的相对位置关系，在后一种情况下，在基于第一距离计算第二距离时，需要根据各拍摄设备中摄像头与设备中心位置之间的相对位置关系，将第一拍摄设备和第二拍摄设备之间中心位置的相对位置关系转换为摄像头之间的相对位置关系，再根据摄像头之间的相对位置关系将第一距离转换为第二距离。在本实施例中，相对位置关系可以包括二者之间的平移和旋转关系。
步骤203、基于所述第二距离对所述第一拍摄设备采集到的第二影像中的所述目标对焦物进行拍摄。
其中，第一拍摄设备在获取到与目标对焦物的第二距离之后，根据预设的物距与马达位置之间的对应关系，计算对焦马达的位置以及移动方向，从而根据计算得到的位置和移动方向控制对焦马达运转，当对焦马达移动到相应位置后，对目标对焦物体进行拍摄。
通过计算处理速度快于第一拍摄设备的第二拍摄设备检测第二拍摄设备采集到的第一影像中的目标对焦物与第二拍摄设备之间的第一距离，并获取基于第一距离确定的该目标对焦物与第一拍摄设备之间的第二距离，基于第二距离对第一拍摄设备采集到的第二影像中的该目标对焦物进行拍摄，实现了基于计算处理速度更高的第二拍摄设备协助计算处理速度较慢的第一拍摄设备进行对焦的目的，提高了第一拍摄设备的对焦速度，能够为用户提供流畅、快速的拍照体验。
图6是本申请实施例提供的一种拍摄设备的对焦方法的流程图，如图6所示，该方法包括如下步骤：
步骤601、接收第二拍摄设备检测到的第一距离，所述第一距离为所述第二拍摄设备采集到的第一影像中的目标对焦物与所述第二拍摄设备之间的距离。
步骤602、获取基于所述第一距离确定的所述目标对焦物与第一拍摄设备之间的第二距离。
步骤603、基于所述第二距离，采用CDAF对焦方式对所述第一拍摄设 备采集到的第二影像中的所述目标对焦物进行对焦。
在本实施例中，第二拍摄设备的计算处理速度快于第一拍摄设备的计算处理速度。
示例的，在本实施例中，第二拍摄设备和第一拍摄设备固接后，同时采集同一场景的影像，第一拍摄设备采集的影像称为第二影像，第二拍摄设备采集的影像称为第一影像，第一影像和第二影像中均包括同一目标对焦物体。第一拍摄设备采集到第二影像之后，将第二影像发送给第二拍摄设备，第二拍摄设备在自身显示屏的第一区域中显示第二影像，在自身显示屏的第二区域中显示第一影像，用户在第一影像或第二影像中选择该目标对焦物体，第二拍摄设备根据用户选择的目标对焦物，检测在实际环境中该目标对焦物体与第二拍摄设备自身之间的第一距离，并根据预先存储的自身与第一拍摄设备之间的相对位置关系，将第一距离映射为目标对焦物与第一拍摄设备之间的第二距离，第一拍摄设备从第二拍摄设备中获取第二距离，基于第二距离调节对焦马达的位置和移动方向，以实现对目标对焦物的初步对焦，在完成初步对焦之后，采用内置的CDAF对焦方式对初步对焦的结果进行合焦处理，实现对目标对焦物的精确对焦。
示例的，在得到精确对焦结果后，第一拍摄设备还可以将对焦后的影像发送给第二拍摄设备进行显示，以使对焦结果能够直观的显示给用户。
通过将第二拍摄设备检测到的目标对焦物与第二拍摄设备之间的第一距离映射为目标对焦物与第一拍摄设备之间的第二距离，使得第一拍摄设备基于第二距离对目标对焦物进行初步对焦，并基于CDAF对焦方式对初步对焦结果进行合焦处理，不但提高了第一拍摄设备的对焦速度，还保证了第一拍摄设备对焦的准确性。
图7是本申请实施例提供的一种拍摄设备的结构示意图，该拍摄设备可以示例性的理解为诸如手持云台相机等体积较小，计算处理速度相对较慢的拍摄设备。如图7所示，拍摄设备70包括摄像头71用于采集影像；通讯接口72用于与第二拍摄设备74通信连接；一个或多个处理器73，各处理器单独或协同工作，处理器73用于：，接收第二拍摄设备74检测到的第一距离，第一距离为第二拍摄设备采集到的第一影像中的目标对焦物 与第二拍摄设备之间的距离，获取基于第一距离确定的所述目标对焦物与拍摄设备70的第二距离，基于第二距离对拍摄设备70到的第二影像中的目标对焦物进行拍摄；其中，第二拍摄设备的计算处理速度快于拍摄设备的计算处理速度。
在一种实施方式中，通讯接口72与第二拍摄设备固定连接。
在一种实施方式中，拍摄设备70中内置对比度检测对焦CDAF的对焦方式。
在一种实施方式中，第一距离为第二拍摄设备采用相位检测对焦PDAF和CDAF相结合的对焦方式检测得到的。
在一种实施方式中，第一距离为第二拍摄设备采用主动对焦方式检测得到的。
在一种实施方式中，处理器73在接收第二拍摄设备检测到的第一距离之前，还用于：
将拍摄设备70采集得到的第二影像发送给第二拍摄设备进行显示，以使第二拍摄设备在用户从第二影像中选择目标对焦物后，基于第一影像检测获得第一距离。
在一种实施方式中，第二影像在第二拍摄设备上的第一区域显示，第一影像在第二拍摄设备上的第二区域显示。
本实施例提供的拍摄设备能够用于执行图2实施例的方法，其执行方式和有益效果类似在这里不再赘述。
本申请实施例还提供一种拍摄设备，该拍摄设备包括摄像头，用于采集影像；通讯接口，用于与第二拍摄设备通信连接；一个或多个处理器，所述一个或多个处理器单独或协同工作，所述处理器用于：接收第二拍摄设备检测到的第一距离，第一距离为第二拍摄设备采集到的第一影像中的目标对焦物与第二拍摄设备之间的距离；获取基于第一距离确定的目标对焦物与拍摄设备之间的第二距离；基于第二距离，采用CDAF对焦方式对拍摄设备采集到的第二影像中的目标对焦物进行对焦；其中，第二拍摄设备的计算处理速度快于本申请实施例提供的拍摄设备的计算处理速度。
在一种实施方式中，所述通讯接口用于与所述第二拍摄设备固定连接。
在一种实施方式中，所述处理器基于所述第二距离，采用CDAF对焦方式对所述拍摄设备采集到的第二影像中的所述目标对焦物进行对焦之后，还用于将对焦得到的影像发送给所述第二拍摄设备进行显示。
在一种实施方式中，所述处理器接收所述第二拍摄设备检测到的第一距离之前，还用于：将所述拍摄设备采集得到的所述第二影像发送给所述第二拍摄设备进行显示，以使所述第二拍摄设备在用户从所述第二影像中选择所述目标对焦物后，基于所述第一影像检测获得所述第一距离。
在一种实施方式中，所述第二影像在所述第二拍摄设备上的第一区域显示，所述第一影像在所述第二拍摄设备上的第二区域显示。
本实施例提供的拍摄设备能够用于执行图6实施例的方法，其执行方式和有益效果类似在这里不再赘述。
本申请实施例还提供一种拍摄系统，该拍摄系统包括第一拍摄设备以及与第一拍摄设备固定连接的第二拍摄设备，在执行拍摄操作时，第一拍摄设备在第二拍摄设备的辅助下执行上述实施例所述的对焦方法，其中，第一拍摄设备可以包括手持云台相机。
另外，本实施例还提供一种计算机可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行以实现上述实施例所述的对焦方法。
在本发明所提供的几个实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元，可以存储在一个计算机可读取存储介质中。上述软件功能单元存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本发明各个实施例所述方法的部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
本领域技术人员可以清楚地了解到，为描述的方便和简洁，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将装置的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。上述描述的装置的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (25)

  1. 一种拍摄设备的对焦方法，其特征在于，所述方法包括：
    接收第二拍摄设备检测到的第一距离，所述第一距离为所述第二拍摄设备采集到的第一影像中的目标对焦物与所述第二拍摄设备之间的距离；
    获取基于所述第一距离确定的所述目标对焦物与第一拍摄设备之间的第二距离；
    基于所述第二距离对所述第一拍摄设备采集到的第二影像中的所述目标对焦物进行拍摄；
    其中，所述第二拍摄设备的计算处理速度快于所述第一拍摄设备的计算处理速度。
  2. 根据权利要求1所述的方法，其特征在于，所述第一拍摄设备内置对比度检测对焦CDAF的对焦方式。
  3. 根据权利要求2所述的方法，其特征在于，所述第一距离为所述第二拍摄设备采用相位检测对焦PDAF和CDAF相结合的对焦方式检测得到的。
  4. 根据权利要求2所述的方法，其特征在于，所述第一距离为所述第二拍摄设备采用主动对焦方式检测得到的。
  5. 根据权利要求1-4中任一项所述的方法，其特征在于，所述接收所述第二拍摄设备检测到的第一距离之前，所述方法还包括：
    将所述第一拍摄设备采集得到的所述第二影像发送给所述第二拍摄设备进行显示，以使所述第二拍摄设备在用户从所述第二影像中选择所述目标对焦物后，基于所述第一影像检测获得所述第一距离。
  6. 根据权利要求5所述的方法，其特征在于，所述第二影像在所述第二拍摄设备上的第一区域显示，所述第一影像在所述第二拍摄设备上的第二区域显示。
  7. 一种拍摄设备的对焦方法，其特征在于，所述方法包括：
    接收第二拍摄设备检测到的第一距离，所述第一距离为所述第二拍摄设备采集到的第一影像中的目标对焦物与所述第二拍摄设备之间的距离；
    获取基于所述第一距离确定的所述目标对焦物与第一拍摄设备之间的第二距离；
    基于所述第二距离，采用CDAF对焦方式对所述第一拍摄设备采集到的第二影像中的所述目标对焦物进行对焦；
    其中，所述第二拍摄设备的计算处理速度快于所述第一拍摄设备的计算处理速度。
  8. 根据权利要求7所述的方法，其特征在于，所述基于所述第二距离，采用CDAF对焦方式对所述第一拍摄设备采集到的第二影像中的所述目标对焦物进行对焦之后，所述方法还包括：
    将对焦得到的影像发送给所述第二拍摄设备进行显示。
  9. 根据权利要求7或8所述的方法，其特征在于，所述接收所述第二拍摄设备检测到的第一距离之前，所述方法还包括：
    将所述第一拍摄设备采集得到的所述第二影像发送给所述第二拍摄设备进行显示，以使所述第二拍摄设备在用户从所述第二影像中选择所述目标对焦物后，基于所述第一影像检测获得所述第一距离。
  10. 根据权利要求9所述的方法，其特征在于，所述第二影像在所述第二拍摄设备上的第一区域显示，所述第一影像在所述第二拍摄设备上的第二区域显示。
  11. 一种拍摄设备，其特征在于，包括：
    摄像头，用于采集影像；
    通讯接口，用于与第二拍摄设备通信连接；
    一个或多个处理器，所述一个或多个处理器单独或协同工作，所述处理器用于：
    接收第二拍摄设备检测到的第一距离，所述第一距离为所述第二拍摄设备采集到的第一影像中的目标对焦物与所述第二拍摄设备之间的距离；
    获取基于所述第一距离确定的所述目标对焦物与所述拍摄设备之间的第二距离；
    基于所述第二距离对所述拍摄设备采集到的第二影像中的所述目标对焦物进行拍摄；
    其中，所述第二拍摄设备的计算处理速度快于所述拍摄设备的计算处理速度。
  12. 根据权利要求11所述的拍摄设备，其特征在于，所述通讯接口 用于与所述第二拍摄设备固定连接。
  13. 根据权利要求11所述的拍摄设备，其特征在于，所述拍摄设备中内置对比度检测对焦CDAF的对焦方式。
  14. 根据权利要求13所述的拍摄设备，其特征在于，所述第一距离为所述第二拍摄设备采用相位检测对焦PDAF和CDAF相结合的对焦方式检测得到的。
  15. 根据权利要求13所述的拍摄设备，其特征在于，所述第一距离为所述第二拍摄设备采用主动对焦方式检测得到的。
  16. 根据权利要求11-15中任一项所述的拍摄设备，其特征在于，所述处理器在接收所述第二拍摄设备检测到的第一距离之前，还用于：
    将所述拍摄设备采集得到的所述第二影像发送给所述第二拍摄设备进行显示，以使所述第二拍摄设备在用户从所述第二影像中选择所述目标对焦物后，基于所述第一影像检测获得所述第一距离。
  17. 根据权利要求16所述的拍摄设备，其特征在于，所述第二影像在所述第二拍摄设备上的第一区域显示，所述第一影像在所述第二拍摄设备上的第二区域显示。
  18. 一种拍摄设备，其特征在于，包括：
    摄像头，用于采集影像；
    通讯接口，用于与第二拍摄设备通信连接；
    一个或多个处理器，所述一个或多个处理器单独或协同工作，所述处理器用于：
    接收第二拍摄设备检测到的第一距离，所述第一距离为所述第二拍摄设备采集到的第一影像中的目标对焦物与所述第二拍摄设备之间的距离；
    获取基于所述第一距离确定的所述目标对焦物与所述拍摄设备之间的第二距离；
    基于所述第二距离，采用CDAF对焦方式对所述拍摄设备采集到的第二影像中的所述目标对焦物进行对焦；
    其中，所述第二拍摄设备的计算处理速度快于所述拍摄设备的计算处理速度。
  19. 根据权利要求18所述的拍摄设备，其特征在于，所述通讯接口 用于与所述第二拍摄设备固定连接。
  20. 根据权利要求18所述的拍摄设备，其特征在于，所述处理器基于所述第二距离，采用CDAF对焦方式对所述拍摄设备采集到的第二影像中的所述目标对焦物进行对焦之后，还用于
    将对焦得到的影像发送给所述第二拍摄设备进行显示。
  21. 根据权利要求18-20中任一项所述的拍摄设备，其特征在于，所述处理器接收所述第二拍摄设备检测到的第一距离之前，还用于：
    将所述拍摄设备采集得到的所述第二影像发送给所述第二拍摄设备进行显示，以使所述第二拍摄设备在用户从所述第二影像中选择所述目标对焦物后，基于所述第一影像检测获得所述第一距离。
  22. 根据权利要求21所述的拍摄设备，其特征在于，所述第二影像在所述第二拍摄设备上的第一区域显示，所述第一影像在所述第二拍摄设备上的第二区域显示。
  23. 一种拍摄系统，其特征在于，包括第一拍摄设备，以及与所述第一拍摄设备固定连接的第二拍摄设备，在执行拍摄操作时，所述第一拍摄设备在所述第二拍摄设备的辅助下执行权利要求1-10中任一项所述的对焦方法。
  24. 根据权利要求23所述的系统，其特征在于，所述第一拍摄设备包括手持云台相机。
  25. 一种计算机可读存储介质，其特征在于，存储有计算机程序，所述计算机程序被处理器执行以实现权利要求1-10中任一项所述的方法。
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