WO2022040936A1 - 变焦视频拍摄方法、拍摄系统、拍摄装置和存储介质 - Google Patents

变焦视频拍摄方法、拍摄系统、拍摄装置和存储介质 Download PDF

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Publication number
WO2022040936A1
WO2022040936A1 PCT/CN2020/111146 CN2020111146W WO2022040936A1 WO 2022040936 A1 WO2022040936 A1 WO 2022040936A1 CN 2020111146 W CN2020111146 W CN 2020111146W WO 2022040936 A1 WO2022040936 A1 WO 2022040936A1
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WIPO (PCT)
Prior art keywords
shooting
photographing
user
target object
photographing device
Prior art date
Application number
PCT/CN2020/111146
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English (en)
French (fr)
Inventor
蒋有为
张益萌
吴迪
Original Assignee
深圳市大疆创新科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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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 CN202080016804.4A priority Critical patent/CN113491102A/zh
Priority to PCT/CN2020/111146 priority patent/WO2022040936A1/zh
Publication of WO2022040936A1 publication Critical patent/WO2022040936A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60Control of cameras or camera modules
    • H04N23/67Focus control based on electronic image sensor signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60Control of cameras or camera modules
    • H04N23/62Control of parameters via user interfaces
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60Control of cameras or camera modules
    • H04N23/63Control of cameras or camera modules by using electronic viewfinders
    • H04N23/631Graphical user interfaces [GUI] specially adapted for controlling image capture or setting capture parameters
    • H04N23/632Graphical user interfaces [GUI] specially adapted for controlling image capture or setting capture parameters for displaying or modifying preview images prior to image capturing, e.g. variety of image resolutions or capturing parameters
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60Control of cameras or camera modules
    • H04N23/63Control of cameras or camera modules by using electronic viewfinders
    • H04N23/633Control of cameras or camera modules by using electronic viewfinders for displaying additional information relating to control or operation of the camera
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60Control of cameras or camera modules
    • H04N23/667Camera operation mode switching, e.g. between still and video, sport and normal or high- and low-resolution modes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording

Definitions

  • the present application relates to the field of shooting technologies, and in particular, to a zoom video shooting method, a shooting system, a shooting device and a storage medium.
  • the sliding zoom of the shooting device can be realized by holding the gimbal, that is, Hitchcock-style zoom.
  • the position and focal length of the shooting device change synchronously during shooting, so that the subject remains unchanged in the screen, and the background appears zoomed , resulting in a stronger visual impact.
  • the implementation of Hitchcock-style zoom is mainly that the user manually moves the shooting device and manually adjusts the focal length of the shooting device. The operation process is cumbersome, and the shooting requirements are relatively high, which is inconvenient for the user to easily shoot the Hitchcock effect. video, the user experience is not good.
  • the present application provides a zoom video shooting method, a shooting system, a shooting device and a storage medium, aiming at solving technical problems such as cumbersome operation process when shooting a video with Hitchcock effect.
  • an embodiment of the present application provides a zoom video shooting method for a shooting device, where the shooting device is mounted on a movable platform, and the method includes:
  • the shooting mode is used to instruct the movable platform to move forward toward the target object or move back away from the target object along the shooting direction;
  • the focal length of the shooting device is adjusted in real time, so that the size of the target object in the shot image remains basically unchanged .
  • an embodiment of the present application provides a shooting system, where the shooting system includes a handheld gimbal and a shooting device mounted on the handheld gimbal;
  • the photographing system includes one or more processors, operating individually or collectively, for performing the steps of:
  • the shooting mode is used to instruct the movable platform to move forward toward the target object or move back away from the target object along the shooting direction;
  • the focal length of the shooting device is adjusted in real time, so that the size of the target object in the shot image remains basically unchanged .
  • an embodiment of the present application provides a photographing device, wherein the photographing device includes one or more processors, which work individually or together, and are configured to perform the following steps:
  • the shooting mode is used to instruct the shooting device to move forward toward the target object or move back away from the target object along the shooting direction;
  • the focal length of the shooting device is adjusted in real time, so that the size of the target object in the shot image remains basically unchanged .
  • an embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the processor implements the foregoing method.
  • the embodiments of the present application provide a zoom video shooting method, a shooting system, a shooting device and a storage medium.
  • the shooting image of the shooting device and the display control are displayed on the display interface of the shooting device. icon, and obtain the user's operation on the control icon, and start video recording according to the operation on the control icon.
  • the movable platform moves forward or backward along the shooting direction
  • the focal length of the photographing device is adjusted in real time, so that the size of the target object in the photographed image remains substantially unchanged.
  • the user does not need to manually adjust the shooting focal length, the operation is simple, and the video with Hitchcock effect can be easily shot, and a better shooting effect can be obtained.
  • FIG. 1 is a schematic flowchart of a zoom video shooting method provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a photographing device mounted on a movable platform
  • FIG. 3 is a schematic diagram of an interface for displaying a shooting mode to be selected in an embodiment
  • FIG. 4 is a schematic diagram of an interface for selecting a shooting mode to be selected in one embodiment
  • FIG. 5 is a schematic diagram of an interface for determining a target object in one embodiment
  • FIG. 6 is a schematic diagram of an interface for video recording in one embodiment
  • Fig. 7 is the interface schematic diagram of video recording in another embodiment
  • FIG. 8 is a schematic block diagram of a shooting system provided by an embodiment of the present application.
  • FIG. 9 is a schematic block diagram of a photographing apparatus provided by an embodiment of the present application.
  • FIG. 1 is a schematic flowchart of a zoom video shooting method provided by an embodiment of the present application.
  • the zoom video shooting method can be applied to a shooting device or a movable platform for shooting a Hitchcock effect video and other processes.
  • the photographing device may include a camera, a camcorder, a mobile phone, a tablet computer, a wearable device, an infrared camera device, an ultraviolet camera device, or other image capture devices or a camera device.
  • the movable platform may include at least one of a gimbal, an unmanned aerial vehicle, an unmanned vehicle, and the like.
  • the unmanned aerial vehicle may be a rotary-wing drone, such as a quad-rotor drone, a hexa-rotor drone, an octa-rotor drone, or a fixed-wing drone.
  • the gimbal may be a handheld gimbal.
  • the connecting portion 11 of the movable platform 10 may be connected to the photographing device 20 .
  • the photographing device 20 may also be fixedly connected to the movable platform 10, for example, the photographing device 20 may be integrally provided with the movable platform 10, which is not limited herein.
  • the PTZ has three PTZ axes, namely the yaw axis, the roll axis, and the pitch axis, each axis is provided with a motor 13, and the motor 13 on each axis is used to control the axis to move, In order to stabilize the photographing device 20 and be able to change the orientation and angle of the photographing device 20 .
  • the gimbal may also be a single-axis gimbal, a dual-axis gimbal, or a four-axis gimbal or the like.
  • the movable platform 10 may include a handheld pan/tilt, specifically, the handheld pan/tilt may include a hand-held portion 12 , and the user may hold the hand-held portion 12 to move with the handheld pan/tilt and the camera. Or keep the handheld gimbal in a certain position.
  • the movable platform 10 may include a gimbal and an unmanned aerial vehicle.
  • the gimbal can be mounted on the unmanned aerial vehicle.
  • the unmanned aerial vehicle can move with the gimbal and the photographing device 20 or keep it in a certain position. Location.
  • pan-tilt-zoom video shooting method can be applied to the shooting device 20 , and of course can also be applied to a shooting system including the movable platform 10 and the shooting device 20 .
  • the zoom video shooting method according to the embodiment of the present application includes steps S110 to S140.
  • S110 Determine the shooting mode selected by the user; the shooting mode is used to instruct the movable platform to move forward along the shooting direction to approach the target object or move backward away from the target object.
  • the photographing device is mounted on a movable platform.
  • the photographing mode may be used to instruct the user to move the movable platform and the photographing device forward toward the target object or move backward away from the target object along the photographing direction.
  • the photographing device includes a camera, a mobile phone, and the like.
  • the photographing mode may be used to control the movable platform to move, so as to drive the photographing device to move forward toward the target object or move backward away from the target object along the photographing direction.
  • the photographing device can also be used alone, for example, it can be directly held by the user without being mounted on a movable platform. Then, the shooting mode can be used to instruct the user to move the shooting device forwards toward the target object or move backwards away from the target object along the shooting direction.
  • Hitchcock-style zoom otherwise known as sliding zoom or panning zoom, produces the effect of the object being the same size, but the background constantly changing.
  • the shooting mode includes a first shooting mode and/or a second shooting mode.
  • the first shooting mode is used to instruct the user to move the movable platform and the shooting device backward along the shooting direction, so as to be away from the target object, so as to achieve the effect of the background in the image being close;
  • the second shooting mode It is used to instruct the user to move the movable platform and the photographing device forward to approach the target object, so as to realize the effect of gradually moving away from the background in the image.
  • the first shooting mode may be referred to as a "background close” mode
  • the second shooting mode may be referred to as a "background far away” mode.
  • the determining the shooting mode selected by the user includes: displaying the shooting mode to be selected on the display interface of the shooting device or the movable platform; determining the shooting mode according to the mode selection operation of the user on the display interface
  • the capture mode selected by the user may include “background close” and “background far away”, and the user selects the desired shooting mode by clicking the icon of the corresponding shooting mode on the display interface.
  • the to-be-selected shooting mode may be displayed in the form of text, picture, animation or video.
  • the to-be-selected shooting mode is displayed in the form of animation or video, the user can intuitively understand the shooting effect of the corresponding shooting mode.
  • a list of shooting modes to be selected can also be displayed on the display interface for the user to select a shooting mode from the list; or icons and/or names of one or more shooting modes to be selected can be displayed on the display interface.
  • the user can slide the icon of the shooting mode to make the display interface display the icon and/or name of the remaining at least one shooting mode to be selected.
  • the shortcut keys on the movable platform determine the shooting mode selected by the user, or determine the shooting mode selected by the user through voice recognition.
  • the shooting modes displayed on the display interface of the shooting device or the movable platform are not limited to the "background close” mode and the “background far away” mode, but may also include other shooting modes.
  • icons or lists of modes such as “delayed zoom”, “dynamic zoom” and “slow motion” are also displayed below the display interface.
  • the "dynamic zoom” mode may include a “background close” mode and a “background far away” mode.
  • the shooting mode selected by the user is the "dynamic zoom” mode according to the user's mode selection operation on the display interface
  • the display interface of the photographing device or the movable platform displays icons or lists of the "background close” mode and the “background far away” mode for the user to select.
  • the mode name and/or movement direction prompt information of the to-be-selected shooting mode is also displayed.
  • the corresponding mode name and/or movement direction prompt information is displayed below the icon of the corresponding shooting mode.
  • the mode name "Background Approaching” and the corresponding moving direction prompt information "Please step away from the target when shooting” are displayed below the icon of the first shooting mode; the mode name is displayed below the icon of the second shooting mode "Background away” and the corresponding moving direction prompts for this shooting mode "Please approach the target gradually when shooting”.
  • the mode name and/or the moving direction prompt information can also be displayed in the form of text, pictures, animation or video.
  • a control icon 101 is displayed in the display interface.
  • a photographed image of the photographing device and a control icon may be displayed on the display interface.
  • the displayed captured image is an image captured by the capturing device in real time.
  • the user can adjust the orientation of the photographing device, or control the orientation of the movable platform so that the target object to be photographed is in the photographed image, and can control the photographing device to start video recording by operating the control icon.
  • the target object to be photographed may be determined in the photographed image.
  • the object in the captured image may be determined as the target object through image recognition, for example, an object in the foreground is determined as the target object, or an object in the middle of the captured image is determined as the target object.
  • the target object may be determined according to an object selection operation of the captured image by the user on the display interface.
  • the user can frame the target object to be photographed in the photographed image.
  • the method further includes: controlling the movable platform to adjust the posture of the photographing device, so that the determined target object is in the middle of the photographed image.
  • the shooting direction and angle of the shooting device can be adjusted by controlling at least one of the yaw axis, the roll axis, and the pitch axis of the gimbal, so that the target object is in the middle of the shot image. Better results can be achieved by keeping the target object in the middle of the captured image.
  • the method further comprises: displaying the shooting mode selected by the user on the display interface of the shooting device or the movable platform.
  • the shooting mode “background close” mode selected by the user is displayed on the upper part of the display interface. So that the user knows the current shooting mode.
  • the method further includes: outputting moving direction prompt information according to the shooting mode selected by the user, where the moving direction prompt information is used to instruct the user to move the movable platform and the photographing device forward or backward.
  • the moving direction prompt information corresponding to the first shooting mode is used to instruct the user to move the movable platform and the shooting device backward along the shooting direction to be away from the target object;
  • the moving direction prompt information is used to instruct the user to move the movable platform and the photographing device forward to approach the target object.
  • the moving direction prompt information includes at least one of the following: text, voice, image, and animation.
  • the moving direction prompt information "Please step away from the target" corresponding to the shooting mode "background close” mode selected by the user is displayed on the upper part of the display interface to remind the user of the current shooting mode. Shooting points of the mode.
  • control icon 101 is displayed as a recording state.
  • the size of the target object in the captured image may refer to the size of the target object itself in the captured image, or may refer to the size of the bounding box to which the target object belongs in the captured image. size.
  • the target object can be tracked in real time, and a tracking frame of the target object is displayed, and the size of the tracking frame of the target object remains basically unchanged.
  • adjusting the focal length of the shooting device to increase the zoom factor of the shooting device in the first shooting mode, adjusting the focal length of the shooting device to make the The zoom factor of the camera is reduced.
  • the movable platform and the shooting device move backward along the shooting direction to be away from the target object, and the target object tends to become smaller in the shooting image.
  • the zoom factor of the photographing device By adjusting the zoom factor of the photographing device to increase, the size of the target object in the photographed image can be kept basically unchanged.
  • the movable platform and the shooting device move forward along the shooting direction to approach the target object, and the target object tends to become larger in the shooting image.
  • the shooting device When the zoom factor is reduced, the size of the target object in the captured image can be kept basically unchanged.
  • the size of the target object in the captured image remains substantially unchanged, including: a difference between the size of the target object in the captured image and the initial size is not greater than a first preset
  • the threshold or ratio is not greater than the second preset threshold. It can be understood that due to factors such as the hysteresis of the focal length adjustment of the shooting device, the size of the target object in the captured image will change slightly during the video recording process. The size of the captured image remains the same.
  • the initial size of the target object in the shot image may be determined according to the shooting mode selected by the user.
  • the initial size of the target object in the first shooting mode may be greater than, equal to or smaller than the initial size of the target object in the second shooting mode. Different shooting effects can be achieved.
  • the initial size of the target object in the captured image may be determined according to the size of the bounding box of the target object in the captured image when video recording starts.
  • the size of the target object of each frame of video image in the recorded video can be kept basically unchanged.
  • the initial size of the target object in the captured image may be determined according to the size of the bounding box of the target object in the captured image of the previous frame.
  • the size of the target object of each frame of video image in the recorded video can be kept basically unchanged.
  • the focal length of the photographing device may be adjusted according to the preset size, so that the size of the target object in the shot image is substantially the same as the preset size.
  • the preset size may be a square or rectangular area of 30% to 60% of the captured image.
  • the method further includes: displaying the initial size 103 of the target object in the captured image. It is convenient for the user to predict the effect of the recorded video, and specifically, it is convenient for the user to know the variation range of the size of the target object in the captured image in the currently recorded video. As shown in FIG. 6 , if the size of the target object in the current shot image is basically the same as the initial size, it can be determined that the shooting effect is good. If the size of the target object in the current shot image is greatly different from the original size, it can be determined that the shooting effect is poor and the shooting needs to be restarted.
  • the method further includes: during the video recording process, outputting moving direction prompt information according to the shooting mode selected by the user, where the moving direction prompt information is used to instruct the user to move the movable platform and the The camera is moved forward or backward.
  • the moving direction prompt information corresponding to the first shooting mode is used to instruct the user to move the movable platform and the shooting device backward along the shooting direction to be away from the target object;
  • the moving direction prompt information is used to instruct the user to move the movable platform and the photographing device forward to approach the target object.
  • the moving direction prompt information includes at least one of the following: text, voice, image, and animation.
  • the moving direction prompt information "Please step away from the target" corresponding to the shooting mode "background close” mode selected by the user is displayed on the upper part of the display interface to remind the user of the current shooting mode.
  • the moving direction prompt information 104 in the form of animation is displayed, prompting the user to gradually move away from the target.
  • the movable platform is indicated by arrows to move forward or backward.
  • the method further includes: acquiring the moving direction of the movable platform and/or the photographing device; according to the moving direction of the movable platform and/or the photographing device and the user selection Shooting mode, output prompt information.
  • the outputting prompt information according to the moving direction of the movable platform and/or the photographing device and the photographing mode selected by the user including: if the movable platform and/or the photographing device The moving direction of the camera is opposite to the moving direction corresponding to the shooting mode or does not move, and output prompt information for prompting the user that the moving direction is wrong and/or output prompt information on the moving direction corresponding to the shooting mode.
  • step S110 if it is determined in step S110 that the shooting mode selected by the user is the mode of "close to the background", but during the video recording process, the movable platform and/or the shooting device moves forward to approach the target object or may If the moving platform and/or the photographing device does not move, as shown in FIG. 7 , a prompt message for prompting the user to move in the wrong direction “Wrong moving direction! Please adjust the direction and gradually move away from the target” is output. As shown in FIG. 7 , the moving direction prompt information 104 in the form of animation is displayed, prompting the user to gradually move away from the target.
  • the reference line can be displayed on the display interface.
  • the point or track on the left side of the reference line is displayed; when the user leans to the right, the point or track on the right side of the reference line is displayed.
  • the method further includes: ending the video recording according to the operation on the control icon.
  • control icon 101 is displayed in the recording state. If the user's operation on the control icon is detected again, the video recording can be ended, and the recorded video can be generated for storage and/or playback.
  • the zoom factor and/or the focal length of the photographing device may also be displayed during the process of adjusting the focal length of the photographing device in real time. As shown in Figures 5 to 7, the zoom factor is displayed. Exemplarily, when video recording is not started, the zoom factor and/or the focal length of the photographing device may be displayed during the process of adjusting the focal length of the photographing device in real time. As shown in FIG. 5 , it is displayed that the zoom factor of the current photographing device is 1.0.
  • the zoom factor and/or the focal length of the photographing device may be displayed during the process of adjusting the focal length of the photographing device in real time.
  • the zoom factor of the current camera is 1.5 times.
  • the focal length of the photographing device is adjusted in real time.
  • the current zoom factor of the photographing device is 2.5 times.
  • the method further includes: if the focal length of the photographing device is adjusted so that the zoom factor of the photographing device reaches a preset zoom factor, ending the video recording.
  • the focal length of the shooting device is adjusted to increase the zoom ratio of the shooting device.
  • the zoom ratio of the shooting device reaches a preset zoom ratio, such as shooting
  • the maximum zoom factor of the device is 0.8 to 1 times
  • the video recording can be ended, and the recorded video can be generated for storage and/or playback.
  • the focal length of the shooting device is adjusted to reduce the zoom ratio of the shooting device.
  • the zoom ratio of the shooting device reaches a preset zoom ratio, such as a shooting device.
  • the minimum zoom factor is 1 to 1.5 times, the video recording can be ended, and the recorded video can be generated for storage and/or playback.
  • the focal length of the photographing device when the focal length of the photographing device is adjusted so that the zoom factor of the photographing device reaches a preset zoom factor, the focal length is maintained for a preset duration (for example, two seconds) and the video recording is ended; or the video recording can be ended.
  • the focal length of the photographing device is adjusted so that the zoom factor of the photographing device reaches the preset zoom factor, the focal length is maintained to continue shooting until the duration of the entire video recording reaches the preset shooting duration. You can also get better shooting effects and shooting styles.
  • the method further includes: displaying the duration of the video recording.
  • the duration of video recording is started to be timed, and the current video recording duration is displayed in real time.
  • the current video recording duration is 5 seconds, and as shown in Figure 7, the video recording duration is 10 seconds.
  • the speed at which the movable platform moves forward or backward along the shooting direction can be adjusted in real time, so as to achieve better shooting effect and shooting speed. process.
  • the method further includes: if the duration of the video recording reaches a preset shooting duration, such as 15 seconds, ending the video recording. A video of a specific length can be obtained.
  • the method may further include: during the video recording process, controlling the movable platform to adjust the posture of the photographing device, so that the position of the target object in the photographed image is basically constant.
  • the posture of the photographing device can be adjusted by controlling the movable platform so that the target object is always in the middle position in the photographed image, which can ensure a better photographing effect and highlight the main body of the target object.
  • the posture of the photographing device can also be adjusted by controlling the movable platform, so that the target object is always in the upper position, the lower position, the left position, the right position or the upper left position in the captured image, etc. .
  • the position and size of the target object are tracked in real time, and a tracking frame is displayed in the image, and the tracking frame can surround the face or head and shoulders of the target object.
  • the initial position of the target object in the photographed image may be determined according to the photographing mode selected by the user.
  • the initial positions corresponding to different shooting modes may be different, and different styles of shooting effects may be achieved.
  • the initial position of the target object in the captured image may be determined according to the position of the bounding box of the target object in the captured image when video recording starts.
  • step S130 Before operating the control icon in step S130, adjust the shooting direction of the shooting device so that the target object is in the initial position, such as the middle, upper position, upper left position, etc.; S130 operates the control icon to start video recording, so as to obtain a video of the target object at the corresponding position in the captured image.
  • the main interface return indicator 1051 may also be displayed in the display interface. According to the user's operation on the main interface return indicator 1051, the main interface of the photographing device The interface is, for example, used to display at least one of setting options of the photographing device, application icons, and the like.
  • shooting parameters 1052 may also be displayed in the display interface.
  • the shooting parameters 1052 may include information such as the resolution and frame rate of the captured image.
  • an image effect setting icon 1053 may also be displayed in the display interface.
  • image processing such as beautifying, increasing contrast, adding filters, etc., is performed on the captured image, so as to improve the quality of the recorded video or adjust the video style.
  • the shooting image of the shooting device and the control icon are displayed on the display interface of the shooting device, and the user's information on the control icon is obtained. operation, and start video recording according to the operation of the control icon.
  • the focal length of the shooting device is adjusted in real time to The size of the target object in the captured image is kept substantially unchanged.
  • the user does not need to manually adjust the shooting focal length, the operation is simple, and the video with Hitchcock effect can be easily shot, and a better shooting effect can be obtained.
  • the automation degree of complex shooting can be improved, the shooting mode of Hitchcock zoom is simplified, the threshold for ordinary users to shoot Hitchcock zoom is lowered, and ordinary users can easily perform Hitchcock zoom shooting.
  • the operation is convenient and can be real-time based on the size of the target object in the screen.
  • the focal length is adjusted to ensure that the size of the target object in the captured image remains basically unchanged.
  • a zoom video shooting method is used in a shooting system, the shooting system includes a remote control terminal, a movable platform communicatively connected to the remote control terminal, and a mobile platform mounted on the mobile terminal.
  • a photographing device on a mobile platform the method comprising:
  • the shooting mode selected by the user is determined by the remote control terminal; the shooting mode is used to instruct the movable platform to move forward to the target object or move back away from the target object along the shooting direction; the shooting mode can be displayed on the display interface of the remote control terminal by displaying the shooting mode. Mode icons for user selection;
  • the shooting device adjusts the focus in real time, so that the target object is in the shooting image displayed on the display interface of the remote control terminal
  • the size remains basically the same.
  • the determining the shooting mode selected by the user includes:
  • the shooting mode selected by the user is determined according to a mode selection operation performed by the user on the display interface.
  • the method further includes:
  • the moving direction prompt information is output according to the shooting mode selected by the user, and the moving direction prompt information is used to instruct the user to move the movable platform and the shooting device forward or backward.
  • the prompt information of the movement direction is displayed on the display interface of the remote control terminal.
  • the shooting mode includes a first shooting mode and/or a second shooting mode
  • the moving direction prompt information corresponding to the first shooting mode is used to instruct the user to move the movable platform and the shooting device backward along the shooting direction to be away from the target object;
  • the moving direction prompt information corresponding to the second shooting mode is used to instruct the user to move the movable platform and the shooting device forward to approach the target object.
  • adjusting the focal length of the shooting device to increase the zoom factor of the shooting device in the first shooting mode, adjusting the focal length of the shooting device to increase the zoom factor of the shooting device; in the second shooting mode, adjusting the focal length of the shooting device to make the The zoom factor of the camera is reduced.
  • the method further includes:
  • prompt information is output.
  • prompt information is displayed on the display interface of the remote control terminal.
  • the outputting prompt information according to the moving direction of the movable platform and/or the photographing device and the photographing mode selected by the user including:
  • the moving direction of the movable platform and/or the photographing device is opposite to the moving direction corresponding to the photographing mode or does not move, output a prompt message for prompting the user that the moving direction is wrong and/or output the corresponding photographing mode information about the direction of movement.
  • the moving direction prompt information includes at least one of the following: text, voice, image, and animation.
  • the method further includes:
  • the video recording is ended.
  • the method further includes:
  • the focal length of the photographing device is adjusted so that the zoom factor of the photographing device reaches the preset zoom factor, the video recording ends.
  • the method further includes:
  • the method further includes:
  • the user-selected shooting mode is displayed.
  • the method further includes:
  • the zoom factor and/or the focal length of the photographing device are displayed.
  • the method further includes:
  • the initial size of the target object in the shot image is determined.
  • the method further includes:
  • the initial size of the target object in the captured image is determined according to the size of the bounding box of the target object in the captured image when video recording starts.
  • the size of the target object in the captured image remains substantially unchanged, including:
  • the difference between the size of the target object in the captured image and the initial size is not greater than the first preset threshold or the ratio is not greater than the second preset threshold.
  • the method further includes:
  • the movable platform is controlled to adjust the posture of the photographing device, so that the position of the target object in the photographed image remains substantially unchanged.
  • the method further includes:
  • the initial position of the target object in the shot image is determined.
  • the method further includes:
  • the initial position of the target object in the captured image is determined according to the position of the bounding box of the target object in the captured image when video recording starts.
  • FIG. 8 is a schematic block diagram of a photographing system 500 provided by an embodiment of the present application.
  • the photographing system 500 includes a handheld gimbal and a photographing device mounted on the handheld gimbal.
  • the handheld gimbal is detachably connected to the photographing device, or the photographing device may also be integrated with the handheld gimbal, which is not limited herein.
  • the shooting system 500 includes one or more processors 501, and the one or more processors 501 work individually or together to perform the steps of the aforementioned zoom video shooting method.
  • the photographing system 500 further includes a memory 502 .
  • the processor 501 and the memory 502 are connected through a bus 503, and the bus 503 is, for example, an I2C (Inter-integrated Circuit) bus.
  • I2C Inter-integrated Circuit
  • the processor 501 may be a micro-controller unit (Micro-controller Unit, MCU), a central processing unit (Central Processing Unit, CPU), or a digital signal processor (Digital Signal Processor, DSP) or the like.
  • MCU Micro-controller Unit
  • CPU Central Processing Unit
  • DSP Digital Signal Processor
  • the memory 502 may be a Flash chip, a read-only memory (ROM, Read-Only Memory) magnetic disk, an optical disk, a U disk, or a mobile hard disk, and the like.
  • ROM Read-Only Memory
  • the memory 502 may be a Flash chip, a read-only memory (ROM, Read-Only Memory) magnetic disk, an optical disk, a U disk, or a mobile hard disk, and the like.
  • the processor 501 is configured to run a computer program stored in the memory 502, and implement the aforementioned zoom video shooting method when executing the computer program.
  • the processor 501 is configured to run a computer program stored in the memory 502, and implement the following steps when executing the computer program:
  • the shooting mode is used to instruct the handheld gimbal to move forward along the shooting direction to approach the target object or move back away from the target object;
  • the focal length of the photographing device is adjusted in real time when the handheld gimbal moves forward or backward along the photographing direction, so that the size of the target object in the photographed image remains basically unchanged .
  • Embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, the computer program includes program instructions, and when the computer program is executed by a processor, the processor implements the The steps of the zoom video shooting method provided by the above embodiments.
  • the computer-readable storage medium may be an internal storage unit of the photographing system described in any of the foregoing embodiments, such as a hard disk or a memory of the photographing system.
  • the computer-readable storage medium may also be an external storage device of the shooting system, such as a plug-in hard disk equipped on the shooting system, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) ) card, Flash Card, etc.
  • FIG. 9 is a schematic block diagram of a photographing apparatus 600 provided by an embodiment of the present application.
  • the imaging device 600 can be mounted on a pan/tilt head.
  • the photographing apparatus 600 includes one or more processors 601, and the one or more processors 601 work individually or together to execute the steps of the aforementioned zoom video photographing method.
  • the photographing apparatus 600 further includes a memory 602 .
  • the processor 601 and the memory 602 are connected through a bus 603, and the bus 603 is, for example, an I2C (Inter-integrated Circuit) bus.
  • I2C Inter-integrated Circuit
  • the processor 601 may be a micro-controller unit (Micro-controller Unit, MCU), a central processing unit (Central Processing Unit, CPU), or a digital signal processor (Digital Signal Processor, DSP) or the like.
  • MCU Micro-controller Unit
  • CPU Central Processing Unit
  • DSP Digital Signal Processor
  • the memory 602 may be a Flash chip, a read-only memory (ROM, Read-Only Memory) magnetic disk, an optical disk, a U disk, a mobile hard disk, and the like.
  • ROM Read-Only Memory
  • the memory 602 may be a Flash chip, a read-only memory (ROM, Read-Only Memory) magnetic disk, an optical disk, a U disk, a mobile hard disk, and the like.
  • the processor 601 is configured to run a computer program stored in the memory 602, and implement the aforementioned zoom video shooting method when executing the computer program.
  • the processor 601 is configured to run a computer program stored in the memory 602, and implement the following steps when executing the computer program:
  • the shooting mode is used to instruct the movable platform to move forward toward the target object or move back away from the target object along the shooting direction;
  • the focal length of the shooting device is adjusted in real time, so that the size of the target object in the shot image remains basically unchanged .
  • Embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and the computer program includes program instructions, and the processor executes the program instructions to realize the provision of the above embodiments.
  • the steps of the zoom video shooting method are described in detail below.
  • the computer-readable storage medium may be an internal storage unit of the photographing apparatus described in any of the foregoing embodiments, such as a hard disk or a memory of the photographing apparatus.
  • the computer-readable storage medium may also be an external storage device of the photographing device, such as a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) equipped on the photographing device ) card, Flash Card, etc.
  • the photographing device, photographing system, and computer-readable storage medium provided by the embodiments of the present application, by determining the photographing mode selected by the user, displaying the photographing image of the photographing device and displaying the control icon on the display interface of the photographing device, and obtaining The user operates the control icon, and starts video recording according to the operation of the control icon.
  • the movable platform moves forward or backward along the shooting direction, adjust all the settings in real time.
  • the focal length of the photographing device so that the size of the target object in the photographed image remains substantially unchanged.
  • the user does not need to manually adjust the shooting focal length, the operation is simple, and the video with Hitchcock effect can be easily shot, and a better shooting effect can be obtained.
  • the automation degree of complex shooting can be improved, the shooting mode of Hitchcock zoom is simplified, the threshold for ordinary users to shoot Hitchcock zoom is lowered, and ordinary users can easily perform Hitchcock zoom shooting.

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Abstract

一种变焦视频拍摄方法,包括:确定用户选取的拍摄模式(S110);显示拍摄图像和控制图标(S120);根据用户对控制图标的操作开始视频录制(S130);在视频录制过程中,在可移动平台沿拍摄方向前移或后移时实时调整拍摄装置的焦距,以使目标对象的尺寸基本保持不变(S140)。本申请能够方便拍摄希区柯克视频。还提供了拍摄系统、拍摄装置和存储介质。

Description

变焦视频拍摄方法、拍摄系统、拍摄装置和存储介质 技术领域
本申请涉及拍摄技术领域,尤其涉及一种变焦视频拍摄方法、拍摄系统、拍摄装置和存储介质。
背景技术
目前,可以通过手持云台实现拍摄设备的滑动变焦,即希区柯克式变焦,具体是在拍摄时拍摄设备的位置和焦距同步变化,实现拍摄主体在画面内维持不变,而背景出现缩放,从而产生更加强烈的视觉冲击效果。然而,希区柯克式变焦的实现方式主要是用户手动移动拍摄设备,同时手动地调整拍摄设备的焦距,操作过程较为繁琐,对拍摄要求较高,不便于用户简易地拍摄希区柯克效果的视频,用户体验不好。
发明内容
基于此,本申请提供了一种变焦视频拍摄方法、拍摄系统、拍摄装置和存储介质,旨在解决拍摄希区柯克效果的视频时,操作过程繁琐等技术问题。
第一方面,本申请实施例提供了一种变焦视频拍摄方法,用于拍摄装置,所述拍摄装置装载于一可移动平台,所述方法包括:
确定用户选取的拍摄模式;所述拍摄模式用于指示所述可移动平台沿拍摄方向前移靠近目标对象或后移远离目标对象;
在所述拍摄装置的显示界面中显示所述拍摄装置的拍摄图像以及显示控制图标;
获取用户对所述控制图标的操作,并根据对所述控制图标的操作,开始进行视频录制;
在所述视频录制过程中,在所述可移动平台沿拍摄方向前移或后移时实时 调整所述拍摄装置的焦距,以使所述目标对象在所述拍摄图像中的尺寸基本保持不变。
第二方面,本申请实施例提供了一种拍摄系统,所述拍摄系统包括手持云台和搭载于所述手持云台的拍摄装置;
所述拍摄系统包括一个或多个处理器,单独地或共同地工作,用于执行如下步骤:
确定用户选取的拍摄模式;所述拍摄模式用于指示所述可移动平台沿拍摄方向前移靠近目标对象或后移远离目标对象;
在所述拍摄装置的显示界面中显示所述拍摄装置的拍摄图像以及显示控制图标;
获取用户对所述控制图标的操作,并根据对所述控制图标的操作,开始进行视频录制;
在所述视频录制过程中,在所述可移动平台沿拍摄方向前移或后移时实时调整所述拍摄装置的焦距,以使所述目标对象在所述拍摄图像中的尺寸基本保持不变。
第三方面,本申请实施例提供了一种拍摄装置,所述拍摄装置包括一个或多个处理器,单独地或共同地工作,用于执行如下步骤:
确定用户选取的拍摄模式;所述拍摄模式用于指示所述拍摄装置沿拍摄方向前移靠近目标对象或后移远离目标对象;
在所述拍摄装置的显示界面中显示所述拍摄装置的拍摄图像以及显示控制图标;
获取用户对所述控制图标的操作,并根据对所述控制图标的操作,开始进行视频录制;
在所述视频录制过程中,在所述可移动平台沿拍摄方向前移或后移时实时调整所述拍摄装置的焦距,以使所述目标对象在所述拍摄图像中的尺寸基本保持不变。
第四方面,本申请实施例提供了一种计算机可读存储介质,所述计算机可读存储介质存储有计算机程序,所述计算机程序被处理器执行时使所述处理器实现上述的方法。
本申请实施例提供了一种变焦视频拍摄方法、拍摄系统、拍摄装置和存储 介质,通过确定用户选取的拍摄模式,在所述拍摄装置的显示界面中显示所述拍摄装置的拍摄图像以及显示控制图标,以及获取用户对所述控制图标的操作,并根据对所述控制图标的操作,开始进行视频录制,在所述视频录制过程中,在所述可移动平台沿拍摄方向前移或后移时实时调整所述拍摄装置的焦距,以使所述目标对象在所述拍摄图像中的尺寸基本保持不变。用户不需要手动调整拍摄焦距,操作简单,可以方便拍摄希区柯克效果的视频,且取得较好的拍摄效果。
应当理解的是,以上的一般描述和后文的细节描述仅是示例性和解释性的,并不能限制本申请实施例的公开内容。
附图说明
为了更清楚地说明本申请实施例的技术方案,下面将对实施例描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图是本申请的一些实施例,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变焦视频拍摄方法的流程示意图;
图2是拍摄装置搭载于可移动平台的示意图;
图3是一实施方式中显示待选的拍摄模式的界面示意图;
图4是一实施方式中选取待选的拍摄模式的界面示意图;
图5是一实施方式中确定目标对象的界面示意图;
图6是一实施方式中进行视频录制的界面示意图;
图7是另一实施方式中进行视频录制的界面示意图;
图8是本申请实施例提供的一种的拍摄系统示意性框图;
图9是本申请实施例提供的一种拍摄装置的示意性框图。
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、完整地描述,显然,所描述的实施例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。
附图中所示的流程图仅是示例说明,不是必须包括所有的内容和操作/步骤,也不是必须按所描述的顺序执行。例如,有的操作/步骤还可以分解、组合或部分合并,因此实际执行的顺序有可能根据实际情况改变。
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。
请参阅图1,图1是本申请实施例提供的一种变焦视频拍摄方法的流程示意图。所述变焦视频拍摄方法可以应用在拍摄装置或可移动平台中,用于拍摄希区柯克效果的视频等过程。
其中拍摄装置可以包括相机、摄录机、手机、平板电脑、穿戴式设备、红外线摄像设备、紫外线摄像设备等影像捕获设备或者摄像设备。
可移动平台可以包括云台、无人飞行器、无人车等中的至少一种。进一步而言,无人飞行器可以为旋翼型无人机,例如四旋翼无人机、六旋翼无人机、八旋翼无人机,也可以是固定翼无人机。示例性的,云台可以为手持云台。
示例性的,如图2所示,可移动平台10的连接部11可以连接拍摄装置20。当然拍摄装置20也可以固定连接在可移动平台10上,例如拍摄装置20可以和可移动平台10一体式设置,在此不做限制。
示例性的,云台具有三个云台轴,分别为yaw轴、roll轴、pitch轴,每一轴上均设有一个电机13,每一轴上的电机13用以控制该轴进行动作,以稳定拍摄装置20并能够改变拍摄装置20的朝向、角度。在其他实施方式中,云台也可以为单轴云台、双轴云台,或者可以为四轴云台等。
示例性的,如图2所示,可移动平台10可以包括手持云台,具体的,手持云台可以包括手持部12,用户可以手持该手持部12,以带着手持云台和拍摄装置移动或者保持手持云台在某一位置。
示例性的,可移动平台10可以包括云台和无人飞行器,该云台可以挂载在无人飞行器上,此时,无人飞行器可以带着云台和拍摄装置20移动或者保持在某一位置。
可以理解的,云台变焦视频拍摄方法可以应用在拍摄装置20中,当然也可以应用在包括可移动平台10和拍摄装置20的拍摄系统中。
如图1所示,本申请实施例的变焦视频拍摄方法包括步骤S110至步骤S140。
S110、确定用户选取的拍摄模式;所述拍摄模式用于指示所述可移动平台沿拍摄方向前移靠近目标对象或后移远离目标对象。
在一些实施方式中,所述拍摄装置装载于一可移动平台。示例性的,所述拍摄模式可以用于指示用户将所述可移动平台和所述拍摄装置沿拍摄方向前移靠近目标对象或后移远离目标对象。
所述拍摄装置包括相机、手机等。
示例性的,所述拍摄模式可以用于控制所述可移动平台移动,以带动所述拍摄装置沿拍摄方向前移靠近目标对象或后移远离目标对象。
在另一些实施方式中,所述拍摄装置也可以单独使用,例如可以不搭载于可移动平台而由用户直接手持。则所述拍摄模式可以用于指示用户将所述拍摄装置沿拍摄方向前移靠近目标对象或后移远离目标对象。
希区柯克式变焦,或者可以称为滑动变焦或移动变焦,可以呈现出目标对象大小不变,但是背景却不断变化的效果。
示例性的,所述拍摄模式包括第一拍摄模式和/或第二拍摄模式。其中,所述第一拍摄模式用于指示用户将所述可移动平台和所述拍摄装置沿拍摄方向后移,以远离目标对象,以实现图像中的背景靠近的效果;所述第二拍摄模式用于指示用户将所述可移动平台和所述拍摄装置前移,以靠近目标对象,以实现图像中的背景逐渐远离的效果。
示例性的,其中第一拍摄模式可以称为“背景靠近”的模式,第二拍摄模式可以称为“背景远离”的模式。
在一些实施方式中,所述确定用户选取的拍摄模式,包括:在所述拍摄装置或可移动平台的显示界面显示待选的拍摄模式;根据用户在所述显示界面的模式选取操作确定所述用户选取的拍摄模式。如图3和图4所示,待选的拍摄模式可以包括“背景靠近”和“背景远离”,用户在所述显示界面通过点击相应拍摄模式的图标选择需要的拍摄模式。如图4所示,根据用户在所述显示界面的模式选取操作确定所述用户选取的拍摄模式为“背景靠近”的模式。示例性的,可以以文字、图片、动画或视频的形式显示待选的拍摄模式。当以动画或视频的形式显示待选的拍摄模式时,用户可以直观的了解相应拍摄模式的拍摄效果。
可以理解的,也可以在显示界面显示待选的拍摄模式的列表,供用户在列 表中选取拍摄模式;或者可以在显示界面显示其中一种或多种待选的拍摄模式的图标和/或名称,用户可以通过滑动所述拍摄模式的图标,使显示界面显示其余至少一个待选的拍摄模式的图标和/或名称,当然也不限于此,在此仅作举例,例如还可以通过拍摄装置和/或可移动平台上的快捷按键确定用户选取的拍摄模式,或者通过语音识别确定用户选取的拍摄模式。
在一些实施方式中,在所述拍摄装置或可移动平台的显示界面显示的拍摄模式不仅限于“背景靠近”模式和“背景远离”模式,也可以包括其他拍摄模式。如图3和图4所示,在所述显示界面的下方还显示“延时变焦”、“动态变焦”、“慢动作”等模式的图标或列表。其中,“动态变焦”模式可以包括“背景靠近”模式和“背景远离”模式,在根据用户在所述显示界面的模式选取操作确定所述用户选取的拍摄模式为“动态变焦”模式时,在所述拍摄装置或可移动平台的显示界面显示“背景靠近”模式和“背景远离”模式的图标或列表供用户选取。
在一些实施方式中,在所述拍摄装置或可移动平台的显示界面显示待选的拍摄模式时,还显示所述待选的拍摄模式的模式名称和/或移动方向提示信息。如图3和图4所示,在相应拍摄模式的图标的下方显示对应的模式名称和/或移动方向提示信息。例如,在第一拍摄模式的图标的下方显示模式名称“背景靠近”和该拍摄模式对应的移动方向提示信息“拍摄时请您逐步远离目标”;在第二拍摄模式的图标的下方显示模式名称“背景远离”和该拍摄模式对应的移动方向提示信息“拍摄时请您逐步靠近目标”。以便用户了解拍摄要点和选取需要的拍摄模式。可以理解的,模式名称和/或移动方向提示信息也可以以文字、图片、动画或视频的方式显示。
S120、在所述拍摄装置的显示界面中显示所述拍摄装置的拍摄图像以及显示控制图标。
示例性的,如图3至图7所示,在显示界面中显示控制图标101。
示例性的,在确定用户选取的拍摄模式后,可以在显示界面中显示拍摄装置的拍摄图像以及显示控制图标。可以理解的,显示的拍摄图像是拍摄装置实时拍摄的图像。用户可以调整拍摄装置的朝向,或者控制可移动平台的朝向以使需要拍摄的目标对象处于所述拍摄图像中,以及可以通过对所述控制图标的操作,控制所述拍摄装置开始视频录制。
在一些实施方式中,可以在所述拍摄图像中确定要拍摄的目标对象。
示例性的,可以通过图像识别确定拍摄图像中的物体为所述目标对象,例如确定处于前景中的物体为所述目标对象,或者确定处于拍摄图像中部的物体为所述目标对象。
示例性的,如图5所示,可以根据用户在所述显示界面对所述拍摄图像的对象选取操作确定所述目标对象。例如用户可以在所述拍摄图像中框选要拍摄的目标对象。
在一些实施方式中,所述方法还包括:控制所述可移动平台调整所述拍摄装置的姿态,以使确定的目标对象处于所述拍摄图像的中部。例如可以通过控制云台的yaw轴、roll轴、pitch轴中的至少一个调整拍摄装置的拍摄方向、角度,以使目标对象处于所述拍摄图像的中部。通过将目标对象维持在拍摄图像的中部们可以取得更好的拍摄效果。
在一些实施方式中,所述方法还包括:在所述拍摄装置或可移动平台的显示界面显示所述用户选取的拍摄模式。示例性的,如图5至图7所示,在所述显示界面的上部显示所述用户选取的拍摄模式“背景靠近”模式。以便用户了解当前的拍摄模式。
示例性的,所述方法还包括:根据用户选取的拍摄模式输出移动方向提示信息,所述移动方向提示信息用于指示用户将所述可移动平台和所述拍摄装置前移或后移。
示例性的,所述第一拍摄模式对应的移动方向提示信息用于指示用户将所述可移动平台和所述拍摄装置沿拍摄方向后移,以远离目标对象;所述第二拍摄模式对应的移动方向提示信息用于指示用户将所述可移动平台和所述拍摄装置前移,以靠近目标对象。
示例性的,所述移动方向提示信息包括以下至少一种:文字、语音、图像、动画。
示例性的,如图6所示,在所述显示界面的上部显示所述用户选取的拍摄模式“背景靠近”模式对应的移动方向提示信息“请您逐步远离目标”,以提示用户当前的拍摄模式的拍摄要点。
S130、获取用户对所述控制图标的操作,并根据对所述控制图标的操作,开始进行视频录制。
示例性的,如图5所示为用户对所述控制图标101进行操作之前的显示界面,所述控制图标101显示为非录制状态;
示例性的,如图6和图7所示为根据用户对所述控制图标101的操作,将控制图标101显示为录制状态。
S140、在所述视频录制过程中,在所述可移动平台沿拍摄方向前移或后移时实时调整所述拍摄装置的焦距,以使所述目标对象在所述拍摄图像中的尺寸基本保持不变。
所述目标对象在所述拍摄图像中的尺寸可以指所述目标对象本身在所述拍摄图像中的尺寸,也可以指所述目标对象所属的边界框(bounding box)在所述拍摄图像中的尺寸。
在所述视频录制过程中,可以对目标对象进行实时跟踪,并显示所述目标对象的跟踪框,所述目标对象的跟踪框的尺寸基本保持不变。示例性的,在所述第一拍摄模式时,调整所述拍摄装置的焦距使所述拍摄装置的变焦倍数增大;在所述第二拍摄模式时,调整所述拍摄装置的焦距使所述拍摄装置的变焦倍数降低。
可以理解的,在所述第一拍摄模式时,所述可移动平台和所述拍摄装置沿拍摄方向后移,以远离目标对象,目标对象在所述拍摄图像中有变小的趋势,此时通过调整拍摄装置的变焦倍数增大,可以保持目标对象在所述拍摄图像的尺寸基本保持不变。在所述第二拍摄模式时,所述可移动平台和所述拍摄装置沿拍摄方向前移,以靠近目标对象,目标对象在所述拍摄图像中有变大的趋势,此时通过调整拍摄装置的变焦倍数降低,可以保持目标对象在所述拍摄图像的尺寸基本保持不变。
在一些实施方式中,所述目标对象在所述拍摄图像中的尺寸基本保持不变,包括:所述目标对象在所述拍摄图像中的尺寸,与初始尺寸的差值不大于第一预设阈值或比值不大于第二预设阈值。可以理解的,由于拍摄装置焦距调整的滞后性等因素,会使视频录制过程中目标对象在所述拍摄图像中的尺寸存在些微变化,也应理解为本申请实施例的保持目标对象在所述拍摄图像的尺寸保持不变。
示例性的,可以根据所述用户选取的拍摄模式,确定所述目标对象在所述拍摄图像中的初始尺寸。示例性的,所述第一拍摄模式时所述目标对象的初始 尺寸可以大于、等于或小于所述第二拍摄模式时所述目标对象的初始尺寸。可以实现不同的拍摄效果。
示例性的,可以根据开始进行视频录制时所述目标对象在所述拍摄图像中的边界框的尺寸,确定所述目标对象在所述拍摄图像中的初始尺寸。可以使得录制的视频中各帧视频图像的目标对象的尺寸基本保持不变。
示例性的,可以根据前一帧拍摄图片中所述目标对象的边界框的尺寸,确定所述目标对象在所述拍摄图像中的初始尺寸。可以使得录制的视频中各帧视频图像的目标对象的尺寸基本保持不变。
示例性的,可以根据所述预设尺寸调整所述拍摄装置的焦距,以使所述目标对象在所述拍摄图像中的尺寸与所述预设尺寸基本相同。例如,所述预设尺寸可以是拍摄图像的30%至60%的方形或矩形区域。
在一些实施方式中,如图6和图7所示,所述方法还包括:显示所述目标对象在所述拍摄图像中的初始尺寸103。以便用户预判录制视频的效果,具体的便于用户了解当前录制的视频中目标对象在所述拍摄图像中的尺寸的变化幅度。如图6所示,当前拍摄图像中目标对象的尺寸和初始尺寸基本相同,则可以确定拍摄效果较好。如果当前拍摄图像中目标对象的尺寸和初始尺寸差别较大,则可以确定拍摄效果较差,需要重新开始拍摄。
在一些实施方式中,所述方法还包括:在所述视频录制过程中,根据用户选取的拍摄模式输出移动方向提示信息,所述移动方向提示信息用于指示用户将所述可移动平台和所述拍摄装置前移或后移。
示例性的,所述第一拍摄模式对应的移动方向提示信息用于指示用户将所述可移动平台和所述拍摄装置沿拍摄方向后移,以远离目标对象;所述第二拍摄模式对应的移动方向提示信息用于指示用户将所述可移动平台和所述拍摄装置前移,以靠近目标对象。
示例性的,所述移动方向提示信息包括以下至少一种:文字、语音、图像、动画。
示例性的,如图6所示,在所述显示界面的上部显示所述用户选取的拍摄模式“背景靠近”模式对应的移动方向提示信息“请您逐步远离目标”,以提示用户当前的拍摄模式的拍摄要点。如图7所示,显示动画形式的移动方向提示信息104,提示用户逐步远离目标。例如,通过箭头指示可移动平台前移或 后移。
在一些实施方式中,所述方法还包括:获取所述可移动平台和/或所述拍摄装置的移动方向;根据所述可移动平台和/或所述拍摄装置的移动方向和所述用户选取的拍摄模式,输出提示信息。
示例性的,所述根据所述可移动平台和/或所述拍摄装置的移动方向和所述用户选取的拍摄模式,输出提示信息,包括:若所述可移动平台和/或所述拍摄装置的移动方向与所述拍摄模式对应的移动方向相反或未移动,输出用于提示用户移动方向错误的提示信息和/或输出所述拍摄模式对应的移动方向提示信息。
示例性的,若在步骤S110确定用户选取的拍摄模式为“背景靠近”的模式,但是在所述视频录制过程中,所述可移动平台和/或所述拍摄装置前移靠近目标对象或者可移动平台和/或所述拍摄装置未移动,则如图7所示,输出用于提示用户移动方向错误的提示信息“移动方向错误!请调整方向后逐步远离目标”。如图7所示,显示动画形式的移动方向提示信息104,提示用户逐步远离目标。
示例性的,当检测到所述可移动平台和/或所述拍摄装置的左右移动的幅度过大,为了防止画面太过于晃动,可提醒用户调整沿直线行走。除此之外,可以在显示界面上显示基准线,当用户偏左时,显示在所述基准线左边的点或轨迹;当用户偏右时,显示在所述基准线右边的点或轨迹,以提醒用户及时调整所述可移动平台和/或所述拍摄装置的移动,以实现顺滑不突兀的画面效果。
在一些实施方式中,所述方法还包括:根据对所述控制图标的操作,结束视频录制。
如图6和图7所示,控制图标101显示为录制状态,若再次检测到用户对所述控制图标的操作,可以结束视频录制,生成录制的视频进行存储和/或播放。
在一些实施方式中,还可以在实时调整所述拍摄装置的焦距的过程中,显示所述拍摄装置的变焦倍数和/或焦距。如图5至图7所示,显示变焦倍数。示例性的,在未开始进行视频录制时,可以在实时调整所述拍摄装置的焦距的过程中,显示所述拍摄装置的变焦倍数和/或焦距。如图5所示,显示当前拍摄装置的变焦倍数为1.0。
示例性的,在开始进行视频录制时,可以在实时调整所述拍摄装置的焦距的过程中,显示所述拍摄装置的变焦倍数和/或焦距。如图6所示,在视频录制 的第五秒,显示当前拍摄装置的变焦倍数为1.5倍。在所述视频录制过程中,实时调整所述拍摄装置的焦距,如图7所示,在视频录制的第十秒,显示当前拍摄装置的变焦倍数为2.5倍。
在一些实施方式中,所述方法还包括:若调整所述拍摄装置的焦距使得所述拍摄装置的变焦倍数达到预设变焦倍数,结束视频录制。
示例性的,在所述第一拍摄模式进行视频录制时,调整所述拍摄装置的焦距使所述拍摄装置的变焦倍数增大,当所述拍摄装置的变焦倍数达到预设变焦倍数,如拍摄装置的最大变焦倍数的0.8至1倍时,可以结束视频录制,生成录制的视频进行存储和/或播放。
示例性的,在所述第二拍摄模式进行视频录制时,调整所述拍摄装置的焦距使所述拍摄装置的变焦倍数降低,当所述拍摄装置的变焦倍数达到预设变焦倍数,如拍摄装置的最小变焦倍数的1至1.5倍时,可以结束视频录制,生成录制的视频进行存储和/或播放。
示例性的,也可以在调整所述拍摄装置的焦距使得所述拍摄装置的变焦倍数达到预设变焦倍数时,保持所述焦距继续拍摄预设时长(如两秒)后结束视频录制;或者可以在调整所述拍摄装置的焦距使得所述拍摄装置的变焦倍数达到预设变焦倍数时,保持所述焦距继续拍摄至整个视频录制的时长达到预设的拍摄时长。也可以得到较好的拍摄效果和拍摄风格。
在一些实施方式中,所述方法还包括:显示视频录制的时长。示例性的,在开始进行视频录制时,开始对视频录制的时长进行计时,以及实时显示当前视频录制的时长。如图6所示,显示当前视频录制的时长为5秒,如图7所示,显示视频录制的时长为10秒。通过显示视频录制的时长,提示用户拍摄的进程,用户可以根据视频录制的时长调整沿拍摄方向前移或后移的速度。
示例性的,在所述视频录制过程中,根据所述视频录制的时长,可以实时调整所述可移动平台沿所述拍摄方向前移或后移的速度,以取得较好的拍摄效果和拍摄进程。
在一些实施方式中,所述方法还包括:若所述视频录制的时长达到预设的拍摄时长,如15秒,结束视频录制。可以得到特定时长的视频。
在一些实施方式中,所述方法还可以包括:在所述视频录制过程中,控制所述可移动平台调整所述拍摄装置的姿态,以使所述目标对象在所述拍摄图像 中的位置基本保持不变。例如可以通过控制所述可移动平台调整所述拍摄装置的姿态使所述目标对象在所述拍摄图像中一直处于中部位置,可以保证较好的拍摄效果,突出目标对象的主体地位。当然也可以通过控制所述可移动平台调整所述拍摄装置的姿态使所述目标对象在所述拍摄图像中一直处于上侧位置、下侧位置、左侧位置、右侧位置或者左上角位置等。
示例性的,在拍摄过程中,实时跟踪所述目标对象的位置和尺寸,并在图像中显示跟踪框,该跟踪框能包绕所述目标对象的人脸或头肩。
示例性的,可以根据所述用户选取的拍摄模式,确定所述目标对象在所述拍摄图像中的初始位置。例如,不同的拍摄模式对应的初始位置可以不同,可以实现不同风格的拍摄效果。
示例性的,可以根据开始进行视频录制时所述目标对象在所述拍摄图像中的边界框的位置,确定所述目标对象在所述拍摄图像中的初始位置。
例如,在步骤S130对所述控制图标进行操作之前,通过调整所述拍摄装置的拍摄方向,使所述目标对象处于所述初始位置,如中部、上侧位置、左上角位置等;之后在步骤S130对所述控制图标进行操作,开始进行视频录制,以得到目标对象在所述拍摄图像中处于相应位置的视频。
在一些实施方式中,如图5和图6所示,还可以在显示界面中显示主界面返回标识1051,根据用户对所述主界面返回标识1051的操作,可以返回拍摄装置的主界面,主界面例如用于显示拍摄装置的设置选项、应用程序图标等中的至少一种。
在一些实施方式中,如图5和图6所示,还可以在显示界面中显示拍摄参数1052。示例性的,所述拍摄参数1052可以包括拍摄图像的分辨率、帧率等信息。
在一些实施方式中,如图5和图6所示,还可以在显示界面中显示图像效果设置图标1053。示例性的,根据用户对所述图像效果设置图标1053的操作,对所述拍摄图像进行图像处理,如美颜、增加对比度、加滤镜等处理,以提高录制视频的质量或调整视频风格。
本申请实施例提供的变焦视频拍摄方法,通过确定用户选取的拍摄模式,在所述拍摄装置的显示界面中显示所述拍摄装置的拍摄图像以及显示控制图标,以及获取用户对所述控制图标的操作,并根据对所述控制图标的操作,开始进 行视频录制,在所述视频录制过程中,在所述可移动平台沿拍摄方向前移或后移时实时调整所述拍摄装置的焦距,以使所述目标对象在所述拍摄图像中的尺寸基本保持不变。用户不需要手动调整拍摄焦距,操作简单,可以方便拍摄希区柯克效果的视频,且取得较好的拍摄效果。可以提高复杂拍摄的自动化程度,简化了希区柯克变焦的拍摄方式,降低了普通用户拍摄希区柯克变焦的门槛,使得普通用户可以较为轻松地进行希区柯克变焦拍摄。
采用本发明实施例的方案,无需用户手动输入或选择变焦变化范围和持续时间,也无需用户在拍摄过程中手动调节焦距,在操作上实现便捷性,也能根据目标对象在画面中的大小实时调节焦距,保证目标对象在所述拍摄图像中的尺寸基本保持不变。
在另一个实施例中,一种变焦视频拍摄方法,用于一种拍摄系统,所述拍摄系统包括,遥控终端,与所述遥控终端通信连接的一可移动平台通信连接以及搭载在所述可移动平台上的拍摄装置,所述方法包括:
通过所述遥控终端确定用户选取的拍摄模式;所述拍摄模式用于指示所述可移动平台沿拍摄方向前移靠近目标对象或后移远离目标对象;可以通过在遥控终端的显示界面上显示拍摄模式图标,以供用户选择;
在所述遥控终端的显示界面中显示所述拍摄装置的拍摄图像以及显示控制图标;
获取用户对所述控制图标的操作,并根据对所述控制图标的操作,控制所述拍摄装置开始进行视频录制;
在所述视频录制过程中,在所述可移动平台沿拍摄方向前移或后移时所述拍摄装置实时调整焦距,以使所述目标对象在所述遥控终端的显示界面显示的拍摄图像中的尺寸基本保持不变。
示例性的,所述确定用户选取的拍摄模式,包括:
在所述显示界面显示待选的拍摄模式;
根据用户在所述显示界面的模式选取操作确定所述用户选取的拍摄模式。
示例性的,所述方法还包括:
根据用户选取的拍摄模式输出移动方向提示信息,所述移动方向提示信息用于指示用户将所述可移动平台和所述拍摄装置前移或后移。例如,在所述遥控终端的显示界面上显示移动方向提示信息。
示例性的,所述拍摄模式包括第一拍摄模式和/或第二拍摄模式;
所述第一拍摄模式对应的移动方向提示信息用于指示用户将所述可移动平台和所述拍摄装置沿拍摄方向后移,以远离目标对象;
所述第二拍摄模式对应的移动方向提示信息用于指示用户将所述可移动平台和所述拍摄装置前移,以靠近目标对象。
示例性的,在所述第一拍摄模式时,调整所述拍摄装置的焦距使所述拍摄装置的变焦倍数增大;在所述第二拍摄模式时,调整所述拍摄装置的焦距使所述拍摄装置的变焦倍数降低。
示例性的,所述方法还包括:
获取所述可移动平台和/或所述拍摄装置的移动方向;
根据所述可移动平台和/或所述拍摄装置的移动方向和所述用户选取的拍摄模式,输出提示信息。例如,在所述遥控终端的显示界面上显示提示信息。
示例性的,所述根据所述可移动平台和/或所述拍摄装置的移动方向和所述用户选取的拍摄模式,输出提示信息,包括:
若所述可移动平台和/或所述拍摄装置的移动方向与所述拍摄模式对应的移动方向相反或未移动,输出用于提示用户移动方向错误的提示信息和/或输出所述拍摄模式对应的移动方向提示信息。
示例性的,所述移动方向提示信息包括以下至少一种:文字、语音、图像、动画。
示例性的,所述方法还包括:
根据对所述控制图标的操作,结束视频录制。
示例性的,所述方法还包括:
若调整所述拍摄装置的焦距使得所述拍摄装置的变焦倍数达到预设变焦倍数,结束视频录制。
示例性的,所述方法还包括:
显示视频录制的时长。
示例性的,所述方法还包括:
显示所述用户选取的拍摄模式。
示例性的,所述方法还包括:
在实时调整所述拍摄装置的焦距的过程中,显示所述拍摄装置的变焦倍数 和/或焦距。
示例性的,所述方法还包括:
根据所述用户选取的拍摄模式,确定所述目标对象在所述拍摄图像中的初始尺寸。
示例性的,所述方法还包括:
根据开始进行视频录制时所述目标对象在所述拍摄图像中的边界框的尺寸,确定所述目标对象在所述拍摄图像中的初始尺寸。
示例性的,所述目标对象在所述拍摄图像中的尺寸基本保持不变,包括:
所述目标对象在所述拍摄图像中的尺寸,与初始尺寸的差值不大于第一预设阈值或比值不大于第二预设阈值。
示例性的,所述方法还包括:
在所述视频录制过程中,控制所述可移动平台调整所述拍摄装置的姿态,以使所述目标对象在所述拍摄图像中的位置基本保持不变。
示例性的,所述方法还包括:
根据所述用户选取的拍摄模式,确定所述目标对象在所述拍摄图像中的初始位置。
示例性的,所述方法还包括:
根据开始进行视频录制时所述目标对象在所述拍摄图像中的边界框的位置,确定所述目标对象在所述拍摄图像中的初始位置。
请参阅图8,图8是本申请实施例提供的拍摄系统500的示意性框图,拍摄系统500包括手持云台和搭载于手持云台的拍摄装置。
示例性的,手持云台与拍摄装置可拆卸连接,或者拍摄装置也可以和手持云台一体式设置,在此不做限制。
该拍摄系统500包括一个或多个处理器501,一个或多个处理器501单独地或共同地工作,用于执行前述的变焦视频拍摄方法的步骤。
示例性的,拍摄系统500还包括存储器502。
示例性的,处理器501和存储器502通过总线503连接,该总线503比如为I2C(Inter-integrated Circuit)总线。
具体地,处理器501可以是微控制单元(Micro-controller Unit,MCU)、中央处理单元(Central Processing Unit,CPU)或数字信号处理器(Digital  Signal Processor,DSP)等。
具体地,存储器502可以是Flash芯片、只读存储器(ROM,Read-Only Memory)磁盘、光盘、U盘或移动硬盘等。
其中,所述处理器501用于运行存储在存储器502中的计算机程序,并在执行所述计算机程序时实现前述的变焦视频拍摄方法。
示例性的,所述处理器501用于运行存储在存储器502中的计算机程序,并在执行所述计算机程序时实现如下步骤:
确定用户选取的拍摄模式;所述拍摄模式用于指示所述手持云台沿拍摄方向前移靠近目标对象或后移远离目标对象;
在所述拍摄装置的显示界面中显示所述拍摄装置的拍摄图像以及显示控制图标;
获取用户对所述控制图标的操作,并根据对所述控制图标的操作,开始进行视频录制;
在所述视频录制过程中,在所述手持云台沿拍摄方向前移或后移时实时调整所述拍摄装置的焦距,以使所述目标对象在所述拍摄图像中的尺寸基本保持不变。
本申请实施例提供的拍摄系统的具体原理和实现方式均与前述实施例的变焦视频拍摄方法类似,此处不再赘述。
本申请实施例还提供一种计算机可读存储介质,所述计算机可读存储介质存储有计算机程序,所述计算机程序中包括程序指令,所述计算机程序被处理器执行时使所述处理器实现上述实施例提供的变焦视频拍摄方法的步骤。
其中,所述计算机可读存储介质可以是前述任一实施例所述的拍摄系统的内部存储单元,例如所述拍摄系统的硬盘或内存。所述计算机可读存储介质也可以是所述拍摄系统的外部存储设备,例如所述拍摄系统上配备的插接式硬盘,智能存储卡(Smart Media Card,SMC),安全数字(Secure Digital,SD)卡,闪存卡(Flash Card)等。
请结合上述实施例参阅图9,图9是本申请实施例提供的拍摄装置600的示意性框图。该拍摄装置600能够搭载于云台。
该拍摄装置600包括一个或多个处理器601,一个或多个处理器601单独地或共同地工作,用于执行前述的变焦视频拍摄方法的步骤。
示例性的,拍摄装置600还包括存储器602。
示例性的,处理器601和存储器602通过总线603连接,该总线603比如为I2C(Inter-integrated Circuit)总线。
具体地,处理器601可以是微控制单元(Micro-controller Unit,MCU)、中央处理单元(Central Processing Unit,CPU)或数字信号处理器(Digital Signal Processor,DSP)等。
具体地,存储器602可以是Flash芯片、只读存储器(ROM,Read-Only Memory)磁盘、光盘、U盘或移动硬盘等。
其中,所述处理器601用于运行存储在存储器602中的计算机程序,并在执行所述计算机程序时实现前述的变焦视频拍摄方法。
示例性的,所述处理器601用于运行存储在存储器602中的计算机程序,并在执行所述计算机程序时实现如下步骤:
确定用户选取的拍摄模式;所述拍摄模式用于指示所述可移动平台沿拍摄方向前移靠近目标对象或后移远离目标对象;
在所述拍摄装置的显示界面中显示所述拍摄装置的拍摄图像以及显示控制图标;
获取用户对所述控制图标的操作,并根据对所述控制图标的操作,开始进行视频录制;
在所述视频录制过程中,在所述可移动平台沿拍摄方向前移或后移时实时调整所述拍摄装置的焦距,以使所述目标对象在所述拍摄图像中的尺寸基本保持不变。
本申请实施例提供的拍摄装置的具体原理和实现方式均与前述实施例的变焦视频拍摄方法类似,此处不再赘述。
本申请实施例还提供一种计算机可读存储介质,所述计算机可读存储介质存储有计算机程序,所述计算机程序中包括程序指令,所述处理器执行所述程序指令,实现上述实施例提供的变焦视频拍摄方法的步骤。
其中,所述计算机可读存储介质可以是前述任一实施例所述的拍摄装置的内部存储单元,例如所述拍摄装置的硬盘或内存。所述计算机可读存储介质也可以是所述拍摄装置的外部存储设备,例如所述拍摄装置上配备的插接式硬盘,智能存储卡(Smart Media Card,SMC),安全数字(Secure Digital,SD)卡,闪 存卡(Flash Card)等。
本申请实施例提供的拍摄装置、拍摄系统和计算机可读存储介质,通过确定用户选取的拍摄模式,在所述拍摄装置的显示界面中显示所述拍摄装置的拍摄图像以及显示控制图标,以及获取用户对所述控制图标的操作,并根据对所述控制图标的操作,开始进行视频录制,在所述视频录制过程中,在所述可移动平台沿拍摄方向前移或后移时实时调整所述拍摄装置的焦距,以使所述目标对象在所述拍摄图像中的尺寸基本保持不变。用户不需要手动调整拍摄焦距,操作简单,可以方便拍摄希区柯克效果的视频,且取得较好的拍摄效果。可以提高复杂拍摄的自动化程度,简化了希区柯克变焦的拍摄方式,降低了普通用户拍摄希区柯克变焦的门槛,使得普通用户可以较为轻松地进行希区柯克变焦拍摄。
应当理解,在此本申请中所使用的术语仅仅是出于描述特定实施例的目的而并不意在限制本申请。
还应当理解,在本申请和所附权利要求书中使用的术语“和/或”是指相关联列出的项中的一个或多个的任何组合以及所有可能组合,并且包括这些组合。
以上所述,仅为本申请的具体实施方式,但本申请的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本申请揭露的技术范围内,可轻易想到各种等效的修改或替换,这些修改或替换都应涵盖在本申请的保护范围之内。因此,本申请的保护范围应以权利要求的保护范围为准。

Claims (59)

  1. 一种变焦视频拍摄方法,其特征在于,用于拍摄装置,所述拍摄装置装载于一可移动平台,所述方法包括:
    确定用户选取的拍摄模式;所述拍摄模式用于指示所述可移动平台沿拍摄方向前移靠近目标对象或后移远离目标对象;
    在所述拍摄装置的显示界面中显示所述拍摄装置的拍摄图像以及显示控制图标;
    获取用户对所述控制图标的操作,并根据对所述控制图标的操作,开始进行视频录制;
    在所述视频录制过程中,在所述可移动平台沿拍摄方向前移或后移时实时调整所述拍摄装置的焦距,以使所述目标对象在所述拍摄图像中的尺寸基本保持不变。
  2. 根据权利要求1所述的变焦视频拍摄方法,其特征在于,所述确定用户选取的拍摄模式,包括:
    在所述显示界面显示待选的拍摄模式;
    根据用户在所述显示界面的模式选取操作确定所述用户选取的拍摄模式。
  3. 根据权利要求1所述的变焦视频拍摄方法,其特征在于,所述方法还包括:
    根据用户选取的拍摄模式输出移动方向提示信息,所述移动方向提示信息用于指示用户将所述可移动平台和所述拍摄装置前移或后移。
  4. 根据权利要求3所述的变焦视频拍摄方法,其特征在于,所述拍摄模式包括第一拍摄模式和/或第二拍摄模式;
    所述第一拍摄模式对应的移动方向提示信息用于指示用户将所述可移动平台和所述拍摄装置沿拍摄方向后移,以远离目标对象;
    所述第二拍摄模式对应的移动方向提示信息用于指示用户将所述可移动平台和所述拍摄装置前移,以靠近目标对象。
  5. 根据权利要求4所述的变焦视频拍摄方法,其特征在于,在所述第一拍摄模式时,调整所述拍摄装置的焦距使所述拍摄装置的变焦倍数增大;在所述 第二拍摄模式时,调整所述拍摄装置的焦距使所述拍摄装置的变焦倍数降低。
  6. 根据权利要求1-5中任一项所述的变焦视频拍摄方法,其特征在于,所述方法还包括:
    获取所述可移动平台和/或所述拍摄装置的移动方向;
    根据所述可移动平台和/或所述拍摄装置的移动方向和所述用户选取的拍摄模式,输出提示信息。
  7. 根据权利要求6所述的变焦视频拍摄方法,其特征在于,所述根据所述可移动平台和/或所述拍摄装置的移动方向和所述用户选取的拍摄模式,输出提示信息,包括:
    若所述可移动平台和/或所述拍摄装置的移动方向与所述拍摄模式对应的移动方向相反或未移动,输出用于提示用户移动方向错误的提示信息和/或输出所述拍摄模式对应的移动方向提示信息。
  8. 根据权利要求3-5、7中任一项所述的变焦视频拍摄方法,其特征在于,所述移动方向提示信息包括以下至少一种:文字、语音、图像、动画。
  9. 根据权利要求1-8中任一项所述的变焦视频拍摄方法,其特征在于,所述方法还包括:
    根据对所述控制图标的操作,结束视频录制。
  10. 根据权利要求1-9中任一项所述的变焦视频拍摄方法,其特征在于,所述方法还包括:
    若调整所述拍摄装置的焦距使得所述拍摄装置的变焦倍数达到预设变焦倍数,结束视频录制。
  11. 根据权利要求1-10中任一项所述的变焦视频拍摄方法,其特征在于,所述方法还包括:
    显示视频录制的时长。
  12. 根据权利要求1-11中任一项所述的变焦视频拍摄方法,其特征在于,所述方法还包括:
    显示所述用户选取的拍摄模式。
  13. 根据权利要求1-12中任一项所述的变焦视频拍摄方法,其特征在于,所述方法还包括:
    在实时调整所述拍摄装置的焦距的过程中,显示所述拍摄装置的变焦倍数 和/或焦距。
  14. 根据权利要求1-13中任一项所述的变焦视频拍摄方法,其特征在于,所述方法还包括:
    根据所述用户选取的拍摄模式,确定所述目标对象在所述拍摄图像中的初始尺寸。
  15. 根据权利要求1-13中任一项所述的变焦视频拍摄方法,其特征在于,所述方法还包括:
    根据开始进行视频录制时所述目标对象在所述拍摄图像中的边界框的尺寸,确定所述目标对象在所述拍摄图像中的初始尺寸。
  16. 根据权利要求1-15中任一项所述的变焦视频拍摄方法,其特征在于,所述目标对象在所述拍摄图像中的尺寸基本保持不变,包括:
    所述目标对象在所述拍摄图像中的尺寸,与初始尺寸的差值不大于第一预设阈值或比值不大于第二预设阈值。
  17. 根据权利要求1-16中任一项所述的变焦视频拍摄方法,其特征在于,所述方法还包括:
    在所述视频录制过程中,控制所述可移动平台调整所述拍摄装置的姿态,以使所述目标对象在所述拍摄图像中的位置基本保持不变。
  18. 根据权利要求17所述的变焦视频拍摄方法,其特征在于,所述方法还包括:
    根据所述用户选取的拍摄模式,确定所述目标对象在所述拍摄图像中的初始位置。
  19. 根据权利要求17所述的变焦视频拍摄方法,其特征在于,所述方法还包括:
    根据开始进行视频录制时所述目标对象在所述拍摄图像中的边界框的位置,确定所述目标对象在所述拍摄图像中的初始位置。
  20. 根据权利要求1-19中任一项所述的变焦视频拍摄方法,其特征在于,所述可移动平台包括如下至少一种:云台、无人飞行器、无人车。
  21. 一种拍摄系统,其特征在于,所述拍摄系统包括手持云台和搭载于所述手持云台的拍摄装置;
    所述拍摄系统包括一个或多个处理器,单独地或共同地工作,用于执行如 下步骤:
    确定用户选取的拍摄模式;所述拍摄模式用于指示所述手持云台沿拍摄方向前移靠近目标对象或后移远离目标对象;
    在所述拍摄装置的显示界面中显示所述拍摄装置的拍摄图像以及显示控制图标;
    获取用户对所述控制图标的操作,并根据对所述控制图标的操作,开始进行视频录制;
    在所述视频录制过程中,在所述手持云台沿拍摄方向前移或后移时实时调整所述拍摄装置的焦距,以使所述目标对象在所述拍摄图像中的尺寸基本保持不变。
  22. 根据权利要求21所述的拍摄系统,其特征在于,所述处理器执行所述确定用户选取的拍摄模式时,用于执行:
    在所述显示界面显示待选的拍摄模式;
    根据用户在所述显示界面的模式选取操作确定所述用户选取的拍摄模式。
  23. 根据权利要求21所述的拍摄系统,其特征在于,所述处理器还用于执行:
    根据用户选取的拍摄模式输出移动方向提示信息,所述移动方向提示信息用于指示用户将所述手持云台和所述拍摄装置前移或后移。
  24. 根据权利要求23所述的拍摄系统,其特征在于,所述拍摄模式包括第一拍摄模式和/或第二拍摄模式;
    所述第一拍摄模式对应的移动方向提示信息用于指示用户将所述手持云台和所述拍摄装置沿拍摄方向后移,以远离目标对象;
    所述第二拍摄模式对应的移动方向提示信息用于指示用户将所述手持云台和所述拍摄装置前移,以靠近目标对象。
  25. 根据权利要求24所述的拍摄系统,其特征在于,在所述第一拍摄模式时,调整所述拍摄装置的焦距使所述拍摄装置的变焦倍数增大;在所述第二拍摄模式时,调整所述拍摄装置的焦距使所述拍摄装置的变焦倍数降低。
  26. 根据权利要求21-25中任一项所述的拍摄系统,其特征在于,所述处理器还用于执行:
    获取所述手持云台和/或所述拍摄装置的移动方向;
    根据所述手持云台和/或所述拍摄装置的移动方向和所述用户选取的拍摄模式,输出提示信息。
  27. 根据权利要求26所述的拍摄系统,其特征在于,所述处理器执行所述根据所述手持云台和/或所述拍摄装置的移动方向和所述用户选取的拍摄模式,输出提示信息时,用于执行:
    若所述手持云台和/或所述拍摄装置的移动方向与所述拍摄模式对应的移动方向相反或未移动,输出用于提示用户移动方向错误的提示信息和/或输出所述拍摄模式对应的移动方向提示信息。
  28. 根据权利要求23-25、27中任一项所述的拍摄系统,其特征在于,所述移动方向提示信息包括以下至少一种:文字、语音、图像、动画。
  29. 根据权利要求21-28中任一项所述的拍摄系统,其特征在于,所述处理器还用于执行:
    根据对所述控制图标的操作,结束视频录制。
  30. 根据权利要求21-29中任一项所述的拍摄系统,其特征在于,所述处理器还用于执行:
    若调整所述拍摄装置的焦距使得所述拍摄装置的变焦倍数达到预设变焦倍数,结束视频录制。
  31. 根据权利要求21-30中任一项所述的拍摄系统,其特征在于,所述处理器还用于执行:
    显示视频录制的时长。
  32. 根据权利要求21-31中任一项所述的拍摄系统,其特征在于,所述处理器还用于执行:
    显示所述用户选取的拍摄模式。
  33. 根据权利要求21-32中任一项所述的拍摄系统,其特征在于,所述处理器还用于执行:
    在实时调整所述拍摄装置的焦距的过程中,显示所述拍摄装置的变焦倍数和/或焦距。
  34. 根据权利要求21-33中任一项所述的拍摄系统,其特征在于,所述处理器还用于执行:
    根据所述用户选取的拍摄模式,确定所述目标对象在所述拍摄图像中的初 始尺寸。
  35. 根据权利要求21-33中任一项所述的拍摄系统,其特征在于,所述处理器还用于执行:
    根据开始进行视频录制时所述目标对象在所述拍摄图像中的边界框的尺寸,确定所述目标对象在所述拍摄图像中的初始尺寸。
  36. 根据权利要求21-35中任一项所述的拍摄系统,其特征在于,所述处理器执行所述目标对象在所述拍摄图像中的尺寸基本保持不变时,用于执行:
    所述目标对象在所述拍摄图像中的尺寸,与初始尺寸的差值不大于第一预设阈值或比值不大于第二预设阈值。
  37. 根据权利要求21-36中任一项所述的拍摄系统,其特征在于,所述处理器还用于执行:
    在所述视频录制过程中,控制所述手持云台调整所述拍摄装置的姿态,以使所述目标对象在所述拍摄图像中的位置基本保持不变。
  38. 根据权利要求37所述的拍摄系统,其特征在于,所述处理器还用于执行:
    根据所述用户选取的拍摄模式,确定所述目标对象在所述拍摄图像中的初始位置。
  39. 根据权利要求37所述的拍摄系统,其特征在于,所述处理器还用于执行:
    根据开始进行视频录制时所述目标对象在所述拍摄图像中的边界框的位置,确定所述目标对象在所述拍摄图像中的初始位置。
  40. 一种拍摄装置,其特征在于,所述拍摄装置包括一个或多个处理器,单独地或共同地工作,用于执行如下步骤:
    确定用户选取的拍摄模式;所述拍摄模式用于指示所述拍摄装置沿拍摄方向前移靠近目标对象或后移远离目标对象;
    在所述拍摄装置的显示界面中显示所述拍摄装置的拍摄图像以及显示控制图标;
    获取用户对所述控制图标的操作,并根据对所述控制图标的操作,开始进行视频录制;
    在所述视频录制过程中,在所述可移动平台沿拍摄方向前移或后移时实时 调整所述拍摄装置的焦距,以使所述目标对象在所述拍摄图像中的尺寸基本保持不变。
  41. 根据权利要求40所述的拍摄装置,其特征在于,所述处理器执行所述确定用户选取的拍摄模式时,用于执行:
    在所述显示界面显示待选的拍摄模式;
    根据用户在所述显示界面的模式选取操作确定所述用户选取的拍摄模式。
  42. 根据权利要求40所述的拍摄装置,其特征在于,所述处理器还用于执行:
    根据用户选取的拍摄模式输出移动方向提示信息,所述移动方向提示信息用于指示用户将所述拍摄装置前移或后移。
  43. 根据权利要求42所述的拍摄装置,其特征在于,所述拍摄模式包括第一拍摄模式和/或第二拍摄模式;
    所述第一拍摄模式对应的移动方向提示信息用于指示用户将所述拍摄装置沿拍摄方向后移,以远离目标对象;
    所述第二拍摄模式对应的移动方向提示信息用于指示用户将所述拍摄装置前移,以靠近目标对象。
  44. 根据权利要求43所述的拍摄装置,其特征在于,在所述第一拍摄模式时,调整所述拍摄装置的焦距使所述拍摄装置的变焦倍数增大;在所述第二拍摄模式时,调整所述拍摄装置的焦距使所述拍摄装置的变焦倍数降低。
  45. 根据权利要求40-44中任一项所述的拍摄装置,其特征在于,所述处理器还用于执行:
    获取所述拍摄装置的移动方向;
    根据所述拍摄装置的移动方向和所述用户选取的拍摄模式,输出提示信息。
  46. 根据权利要求45所述的拍摄装置,其特征在于,所述处理器执行所述根据所述拍摄装置的移动方向和所述用户选取的拍摄模式,输出提示信息时,用于执行:
    若所述拍摄装置的移动方向与所述拍摄模式对应的移动方向相反或未移动,输出用于提示用户移动方向错误的提示信息和/或输出所述拍摄模式对应的移动方向提示信息。
  47. 根据权利要求42-44、46中任一项所述的拍摄装置,其特征在于,所述 移动方向提示信息包括以下至少一种:文字、语音、图像、动画。
  48. 根据权利要求40-47中任一项所述的拍摄装置,其特征在于,所述处理器还用于执行:
    根据对所述控制图标的操作,结束视频录制。
  49. 根据权利要求40-48中任一项所述的拍摄装置,其特征在于,所述处理器还用于执行:
    若调整所述拍摄装置的焦距使得所述拍摄装置的变焦倍数达到预设变焦倍数,结束视频录制。
  50. 根据权利要求40-49中任一项所述的拍摄装置,其特征在于,所述处理器还用于执行:
    显示视频录制的时长。
  51. 根据权利要求40-50中任一项所述的拍摄装置,其特征在于,所述处理器还用于执行:
    显示所述用户选取的拍摄模式。
  52. 根据权利要求40-51中任一项所述的拍摄装置,其特征在于,所述处理器还用于执行:
    在实时调整所述拍摄装置的焦距的过程中,显示所述拍摄装置的变焦倍数和/或焦距。
  53. 根据权利要求40-52中任一项所述的拍摄装置,其特征在于,所述处理器还用于执行:
    根据所述用户选取的拍摄模式,确定所述目标对象在所述拍摄图像中的初始尺寸。
  54. 根据权利要求40-52中任一项所述的拍摄装置,其特征在于,所述处理器还用于执行:
    根据开始进行视频录制时所述目标对象在所述拍摄图像中的边界框的尺寸,确定所述目标对象在所述拍摄图像中的初始尺寸。
  55. 根据权利要求40-54中任一项所述的拍摄装置,其特征在于,所述处理器执行所述目标对象在所述拍摄图像中的尺寸基本保持不变时,用于执行:
    所述目标对象在所述拍摄图像中的尺寸,与初始尺寸的差值不大于第一预设阈值或比值不大于第二预设阈值。
  56. 根据权利要求40-55中任一项所述的拍摄装置,其特征在于,所述拍摄装置能够搭载于手持云台,所述处理器还用于执行:
    在所述视频录制过程中,控制所述手持云台调整所述拍摄装置的姿态,以使所述目标对象在所述拍摄图像中的位置基本保持不变。
  57. 根据权利要求56所述的拍摄装置,其特征在于,所述处理器还用于执行:
    根据所述用户选取的拍摄模式,确定所述目标对象在所述拍摄图像中的初始位置。
  58. 根据权利要求56所述的拍摄装置,其特征在于,所述处理器还用于执行:
    根据开始进行视频录制时所述目标对象在所述拍摄图像中的边界框的位置,确定所述目标对象在所述拍摄图像中的初始位置。
  59. 一种计算机可读存储介质,其特征在于,所述计算机可读存储介质存储有计算机程序,所述计算机程序被处理器执行时使所述处理器实现如权利要求1-20中任一项所述的变焦视频拍摄方法。
PCT/CN2020/111146 2020-08-25 2020-08-25 变焦视频拍摄方法、拍摄系统、拍摄装置和存储介质 WO2022040936A1 (zh)

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