WO2015158284A1 - 具有动态追拍功能的移动终端及其动态追拍方法 - Google Patents

具有动态追拍功能的移动终端及其动态追拍方法 Download PDF

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Publication number
WO2015158284A1
WO2015158284A1 PCT/CN2015/076770 CN2015076770W WO2015158284A1 WO 2015158284 A1 WO2015158284 A1 WO 2015158284A1 CN 2015076770 W CN2015076770 W CN 2015076770W WO 2015158284 A1 WO2015158284 A1 WO 2015158284A1
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Prior art keywords
moving
moving object
motor
vector
target
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PCT/CN2015/076770
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English (en)
French (fr)
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钞晨
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深圳市世尊科技有限公司
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Publication of WO2015158284A1 publication Critical patent/WO2015158284A1/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
    • H04N23/695Control of camera direction for changing a field of view, e.g. pan, tilt or based on tracking of objects

Definitions

  • the present invention relates to the field of photography, and in particular to a mobile terminal having a dynamic tracking function and a dynamic tracking method thereof.
  • the photographing technology of the ordinary mobile terminal blurs the image taken when the moving object is photographed, and the user cannot obtain a clear image.
  • the solution to the above problem is to shorten the exposure time of the lens in the mobile terminal, so that the amount of movement of the image formed by the moving object is reduced, and the blurring of the obtained captured image is improved to some extent, but the image movement cannot be fundamentally solved.
  • the problem of illusion In addition, the shortening of the exposure time causes the exposure amount to decrease, and the image quality to deteriorate; especially in the low light and night state, the shortening of the exposure time causes the captured image to be blurred.
  • the photographing method of the above mobile terminal needs to sacrifice the resolution of the image or the exposure time to obtain a clear photograph of the moving object.
  • a dynamic tracking method for a mobile terminal including:
  • the lens is moved in the opposite direction of the moving direction according to the motion vector.
  • the movement information includes: a moving image of the target moving object
  • the moving information of the moving object of the target is collected in real time by the camera module, including:
  • the target moving object is photographed at a preset time interval by the camera module to obtain a moving image of the plurality of target moving objects.
  • calculating a dynamic vector of the target moving object according to the movement information including:
  • the dynamic vector of the target moving object is calculated by the smart terminal microprocessor combined with the moving images of the plurality of target moving objects.
  • calculating the dynamic vector of the target moving object by using the smart terminal microprocessor and combining the moving images of the plurality of target moving objects including:
  • the displacement vector of the target moving object obtained after each comparison is recorded by the intelligent terminal microprocessor; the displacement vector includes the displacement magnitude and the displacement direction.
  • the lens moves in the opposite direction of the moving direction, including:
  • the motion vector includes a moving speed and a moving direction
  • control motor drives the lens to move at the same speed as the moving speed in the opposite direction to the moving direction during the exposure time.
  • a mobile terminal having a dynamic tracking function including: a smart terminal microprocessor and a camera module;
  • the camera module includes: an image sensor, a motor control chip, a motor drive, a motor, and a lens; wherein
  • the smart terminal microprocessor is connected to the image sensor and is configured to calculate a motion vector of the target moving object according to the motion information collected by the image sensor, where the motion vector includes a moving speed and a moving direction;
  • a motor control chip is respectively connected to the intelligent terminal microprocessor and the motor drive for controlling the motor driving operation according to the dynamic vector calculated by the intelligent terminal microprocessor when the shutter is pressed;
  • a motor coupled to the motor drive, for operation under motor-driven control
  • the lens is coupled to the motor for movement in the opposite direction of movement under the control of the motor.
  • the image sensor is further configured to: in the preview mode, photograph the target moving object at a preset time interval to obtain a moving image of the plurality of target moving objects; wherein the moving information includes the target moving object Motion image.
  • the image sensor is further configured to: send the obtained moving image of the plurality of target moving objects to the smart terminal microprocessor;
  • the intelligent terminal microprocessor is further configured to calculate a motion vector of the target moving object according to the moving image of the plurality of target moving objects.
  • the smart terminal microprocessor is further configured to compare each of the plurality of moving images with the previous moving image; and record the displacement of the target moving object obtained after each comparison.
  • Vector includes displacement magnitude and displacement direction.
  • the smart terminal microprocessor is further configured to stop comparing the plurality of moving images when the shutter is pressed; acquire the displacement vector after the last comparison; according to the preset time interval and finally Calculating the motion vector of the moving image by using the compared displacement vector; the motion vector includes the moving speed and the moving direction; and transmitting the dynamic vector to the motor control chip through the I 2 C interface;
  • the motor control chip is further configured to, according to the motion vector, cause the motor drive control motor to drive the lens in a direction opposite to the moving direction during the exposure time to translate at the same speed as the moving speed.
  • the mobile terminal with the dynamic pursuit function and the dynamic pursuit method thereof include: collecting the movement information of the target moving object in real time through the camera module; calculating the motion vector of the target moving object according to the movement information, and the dynamic vector includes Moving speed and moving direction; when the shutter is pressed, the lens is moved in the opposite direction of the moving direction according to the motion vector, and the photographing method of the mobile terminal in the prior art needs to sacrifice the resolution or the exposure time of the image to obtain the movement.
  • the photographing method of the mobile terminal in the prior art needs to sacrifice the resolution or the exposure time of the image to obtain the movement.
  • the scheme of the clear photo of the object it controls the lens to move in the opposite direction to the target moving object according to the moving speed of the moving object, thereby canceling the relative movement of the moving object and the lens, which can bring the following beneficial effects:
  • FIG. 1 is a schematic structural diagram of a mobile terminal with a dynamic tracking function according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a dynamic tracking method of a mobile terminal according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a dynamic tracking method of another mobile terminal according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of still another method for dynamically capturing a mobile terminal according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of still another mobile terminal with dynamic tracking function according to an embodiment of the present invention.
  • the mobile terminal of the present invention is provided with a camera module 11 and a smart terminal microprocessor 12; wherein the camera module 11 mainly includes a motor control chip 110, a motor drive 111 and a motor 112, wherein the motor drive 111 can be driven by a multi-axis motor, the motor can be a multi-axis focus motor, and the motor 112 is provided with a lens 113; wherein the motor drive 111 and the motor 112 It can be an existing three-axis motor drive and a three-axis focus motor and a lens; and the camera module 11 is further provided with an image sensor 114, the image sensor 114 For converting the acquired image information into an electronic signal; in the mobile terminal, the motor control chip 110 can control the motor drive 111 to drive the lens on the motor 112 113 Mobile; in addition, data communication between the image sensor 114 and the smart terminal microprocessor 12, and the
  • An embodiment of the present invention provides a dynamic tracking method for a mobile terminal, as shown in FIG. 2, which specifically includes:
  • the moving image of the target moving object that is, the moving information of the target moving object
  • the target moving object is a moving object that the user wants to capture.
  • the moving image of the moving object is collected in multiple frames in real time according to one of the moving objects captured by the image sensor.
  • the movement information specifically includes a moving image of the target moving object, and determines a moving displacement of the moving object according to the moving image of the moving object at different time; according to the moving displacement, the moving speed and the moving direction of the moving object of the target are calculated by a comparison algorithm. .
  • the lens is moved in the opposite direction of the moving direction according to the motion vector.
  • the mobile terminal transmits the motion vector to the motor control chip through the smart terminal microprocessor.
  • the horizontal plane of the lens is the X axis and the vertical plane of the lens is Y
  • the axis establishes a Cartesian coordinate system
  • the motor control chip causes the motor drive control to move the multi-axis motor at the same speed as the moving speed and the direction opposite to the moving direction according to the motion vector (ie, the magnitude and direction of the moving speed), thereby being multi-axis
  • the motor drives the lens at The X and Y directions are translated accordingly to offset the movement of the image on the image sensor.
  • the dynamic tracking method for the mobile terminal with the dynamic tracking function provided by the embodiment of the present invention includes: collecting the movement information of the target moving object in real time through the camera module; calculating the dynamic vector of the target moving object according to the movement information, dynamic The vector includes the moving speed and the moving direction; when the shutter is pressed, the lens is moved in the opposite direction of the moving direction according to the dynamic vector, and the photographing method of the mobile terminal in the prior art needs to sacrifice the resolution or the exposure time of the image.
  • the control lens moves in a direction opposite to the moving object of the target according to the moving speed of the moving object, thereby canceling the relative movement of the moving object and the lens, which can bring the following beneficial effects. :
  • the embodiment of the invention provides a dynamic tracking method for a mobile terminal, as shown in FIG. 3, which is specifically:
  • the user can touch the mobile application 'camera' by hand.
  • the camera enters the preview mode; for non-intelligent mobile terminals, the user can manually press the mobile application to control the 'camera'
  • the button is used to turn on the camera. At this time, the camera also enters the preview mode.
  • the target moving object is photographed at a preset time interval by the camera module to obtain a moving image of the plurality of target moving objects.
  • the image sensor in the camera module takes a picture of the target moving object at a specific frame frequency; the frame frequency is a preset value, that is, each camera module corresponds to one frame frequency.
  • the frame frequency of different camera modules is different; specifically, the user can determine the specific value of the frame frequency according to the camera module used by the mobile terminal.
  • the sending mode may be sent by using a wireless method, or may be sent through an interface between the camera module and the smart terminal microprocessor.
  • the smart terminal microprocessor receives the plurality of moving images in sequence, and determines the position of each received moving image (described by the pixel point where the image is located), and the moving image received by the latter one.
  • the pixel is compared with the pixel at which the previous image is located, and the dynamic moving direction of the image and the moving distance (in number of pixels) are calculated.
  • the position of the received first image is (x, y); the position of the second image is (x, y 1 ), thereby calculating the dynamic moving distance of the image as y 1 -y , if y 1 is greater than y , you can determine the dynamic movement direction of the image is horizontal to the right.
  • the displacement vector of the target moving object obtained after each comparison is recorded by the intelligent terminal microprocessor; the displacement vector includes the displacement magnitude and the displacement direction.
  • the smart terminal microprocessor After comparing each of the two moving images, the smart terminal microprocessor records the displacement vector (ie, the dynamic moving direction and the dynamic moving distance of the image), so as to acquire the displacement vector at a certain moment, and according to the moment The displacement vector calculates the motion vector.
  • the displacement vector ie, the dynamic moving direction and the dynamic moving distance of the image
  • the smart terminal microprocessor records the first calculated displacement vector (ie, the dynamic moving direction and the dynamic moving distance of the image), when the second two After the moving image is compared, the intelligent terminal microprocessor replaces the displacement vector calculated for the second time with the displacement vector of the first time (ie, the dynamic moving direction and the dynamic moving distance of the image) and saves it.
  • the first calculated displacement vector ie, the dynamic moving direction and the dynamic moving distance of the image
  • the smart terminal microprocessor acquires the displacement vector of the last comparison, and sends the last compared displacement vector to the motor control chip, so that the motor control chip is based on the displacement vector after the last comparison. Calculate the motion vector.
  • the motion vector includes a moving speed and a moving direction.
  • the reciprocal of the frame frequency is a preset time interval of acquiring a moving image of the moving object of the target;
  • the intelligent terminal microprocessor on the mobile terminal transmits information including the moving speed and the moving direction of the target moving object to the motor control chip in the camera module through the I 2 C interface, so that the motor control chip performs subsequent information according to the information. operating.
  • the lens shift is driven in the opposite direction to the dynamic vector during the exposure time to eliminate the relative movement of the lens and the image.
  • the motor control chip After receiving the motion vector information of the moving speed and the moving direction of the target moving object, the motor control chip generates a control command, and sends the control command to the motor driving, and the motor driving controls the motor to drive the lens at the moving speed according to the control command. Moves in the opposite direction of the movement to counteract the movement of the image on the image sensor.
  • the dynamic tracking method for the mobile terminal with the dynamic tracking function provided by the embodiment of the present invention includes: collecting the movement information of the target moving object in real time through the camera module; calculating the dynamic vector of the target moving object according to the movement information, dynamic The vector includes the moving speed and the moving direction; when the shutter is pressed, the lens is moved in the opposite direction of the moving direction according to the dynamic vector, and the photographing method of the mobile terminal in the prior art needs to sacrifice the resolution or the exposure time of the image.
  • the control lens moves in a direction opposite to the moving object of the target according to the moving speed of the moving object, thereby canceling the relative movement of the moving object and the lens, which can bring the following beneficial effects. :
  • the embodiment of the invention further provides a dynamic tracking method for a mobile terminal, as shown in FIG. 4, which is specifically:
  • the image sensor collects the movement information of the target moving object in real time according to the preset frame frequency; wherein the movement information includes a moving image of the plurality of target moving objects.
  • the image sensor sends the moving image of the plurality of target moving objects to the smart terminal microprocessor.
  • the smart terminal microprocessor receives the moving images of the plurality of target moving objects, and compares each of the plurality of moving images with the previous moving image.
  • the smart terminal microprocessor records the displacement vector of the target moving object obtained after each comparison; the displacement vector includes the displacement magnitude and the displacement direction.
  • the smart terminal microprocessor stops comparing the plurality of moving images and acquires the displacement vector after the last comparison.
  • the smart terminal microprocessor calculates a motion vector of the moving image according to the preset frame frequency and the last compared displacement vector, and sends the obtained motion vector to the motor control chip through the I 2 C interface.
  • the motor control chip receives the motion vector through the I 2 C interface, generates a control command according to the motion vector, and sends the control command to the motor driver while pressing the shutter.
  • the motor drive receives the control command, and according to the control command, controls the motor to move the lens in a direction opposite to the moving direction at the moving speed to cancel the movement of the image on the image sensor.
  • the dynamic tracking method of the mobile terminal with the dynamic tracking function provided by the embodiment of the present invention includes: collecting the movement information of the target moving object in real time through the camera module; and calculating the dynamic vector of the target moving object according to the movement information,
  • the motion vector includes a moving speed and a moving direction; when the shutter is pressed, the lens is moved in the opposite direction of the moving direction according to the motion vector, and the photographing method of the mobile terminal in the prior art needs to sacrifice the resolution or the exposure time of the image.
  • the control lens moves in the opposite direction to the target moving object according to the moving speed of the moving object according to the target, thereby canceling the relative movement of the moving object and the lens, which can bring about the following benefits. effect:
  • a mobile terminal with a dynamic tracking function including: a smart terminal microprocessor 12 And camera module 11;
  • the camera module 11 includes: an image sensor 114, a motor control chip 110, a motor drive 111, and a motor 112. And lens 113; among them,
  • the image sensor 114 is configured to collect moving information of the target moving object in real time.
  • An intelligent terminal microprocessor 12 is coupled to the image sensor 114 for use in accordance with the image sensor 114
  • the collected motion information calculates a motion vector of the target moving object, and the motion vector includes a moving speed and a moving direction.
  • Motor control chip 110 respectively, with smart terminal microprocessor 12 and motor drive 111
  • the connection is used to control the motor drive 111 to operate according to the dynamic vector calculated by the smart terminal microprocessor 12 when the shutter is pressed.
  • Motor 112 is coupled to motor drive 111 for operation under the control of motor drive 111.
  • the lens 113 is coupled to the motor 112 for movement in the opposite direction of movement under the control of the motor 112.
  • the image sensor 114 Further, in the mobile terminal, the image sensor 114 Further, in the preview mode, the target moving object is photographed at a preset time interval to obtain a moving image of the plurality of target moving objects; wherein the moving information includes a moving image of the target moving object.
  • the image sensor 114 It is also used to transmit the obtained moving image of the plurality of target moving objects to the smart terminal microprocessor 12.
  • the intelligent terminal microprocessor 12 is further configured to calculate a motion vector of the target moving object according to the moving image of the plurality of target moving objects.
  • the smart terminal microprocessor 12 The method further comprises: comparing each of the plurality of moving images with the previous moving image; recording the displacement vector of the target moving object obtained after each comparison; the displacement vector includes the displacement magnitude and the displacement direction.
  • the smart terminal microprocessor 12 is further configured to stop comparing the plurality of moving images when the shutter is pressed, and obtain the displacement vector after the last comparison; according to the preset time interval and The displacement vector after the last comparison calculates the motion vector of the moving image; the motion vector includes the moving speed and the moving direction; and the motion vector is transmitted to the motor control chip 110 through the I 2 C interface.
  • the motor control chip 110 is further configured to cause the motor drive 111 to control the motor 112 based on the motion vector.
  • the lens 113 is driven in the opposite direction to the moving direction during the exposure time to translate at the same speed of movement.
  • the mobile terminal with the dynamic pursuit function provided by the embodiment of the invention includes: the intelligent terminal microprocessor 12 and the camera module 11; the camera module 11 includes: an image sensor 114, a motor control chip 110, a motor drive 111, a motor 112, and a lens 113; wherein, the image sensor 114 For real-time collection of mobile information of the target moving object.
  • An intelligent terminal microprocessor 12 is coupled to the image sensor 114 for use in accordance with the image sensor 114
  • the collected motion information calculates a motion vector of the target moving object, and the motion vector includes a moving speed and a moving direction.
  • Motor control chip 110 respectively, with smart terminal microprocessor 12 and motor drive 111
  • the connection is used to control the motor drive 111 to operate according to the dynamic vector calculated by the smart terminal microprocessor 12 when the shutter is pressed.
  • Motor 112 connected to motor drive 111 for motor drive Working under the control of 111.
  • a lens 113 connected to the motor 112 for use in the motor 112 Under the control, the moving direction is opposite to the moving direction.
  • it is necessary to sacrifice the resolution of the image or the exposure time to obtain a clear photo of the moving object, and the object is moved according to the target by controlling the lens.
  • the moving speed moves in the opposite direction to the moving object of the target, thereby canceling the relative movement of the moving object and the lens, which can bring about the following beneficial effects:

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Abstract

本发明提供的具有动态追拍功能的移动终端及其动态追拍方法,包括:通过摄像模组实时采集目标移动物体的移动信息;根据移动信息计算目标移动物体的动态矢量,动态矢量包括移动速度和移动方向;在快门被按下时,根据动态矢量控制镜头沿移动方向相反的方向进行移动。本发明通过控制镜头根据目标移动物体的移动速度以与目标移动物体相反的方向移动,从而抵消目标移动物体与镜头产生的相对移动,故当景物与拍摄者存在相对运动时,可在不损失图像分辨率和曝光时间的前提下,获得清晰图像;且不会过多占用系统资源据处理资源,同时还能够保持画幅和视角的不变。

Description

具有动态追拍功能的移动终端及其动态追拍方法 技术领域
本发明涉及摄影领域,具体而言,涉及一种具有动态追拍功能的移动终端及其动态追拍方法。
背景技术
随着科技的不断发展,人们对移动终端的拍照效果要求越来越高。普通移动终端的拍照技术在对移动物体进行拍照时,所拍得的图像虚化模糊,用户得不到清晰的图像。
目前,解决上述问题的方法是缩短移动终端中镜头的曝光时间,使运动物体所成的像的移动量减小,所得拍摄图像的虚化会得到一定程度改善,但是不能从根本上解决图像移动带来的虚化问题。另外,曝光时间的缩短使得曝光量减小,图像质量变差;尤其在弱光和夜晚的状态下,曝光时间的缩短会令拍摄出的图像模糊不清。
上述移动终端的拍照方法,需要牺牲图像的分辨率或者曝光时间,才能获得移动物体的清晰照片。
发明内容
本发明的目的在于提供具有动态追拍功能的移动终端及其动态追拍方法,以解决上述的问题。
在本发明的实施例中提供了一种移动终端的动态追拍方法,包括:
通过摄像模组实时采集目标移动物体的移动信息;
根据移动信息计算目标移动物体的动态矢量,动态矢量包括移动速度和移动方向;
在快门被按下时,根据动态矢量控制镜头沿移动方向相反的方向进行移动。
进一步的,移动信息包括:目标移动物体的运动图像;
通过摄像模组实时采集目标移动物体的移动信息,包括:
启动移动终端上的相机应用的预览模式;
在预览模式中,通过摄像模组以预设的时间间隔对目标移动物体进行拍照,获得多张目标移动物体的运动图像。
进一步的,根据移动信息计算目标移动物体的动态矢量,包括:
通过摄像模组将获得的多张目标移动物体的运动图像发送给智能终端微处理器;
通过智能终端微处理器并结合多张目标移动物体的运动图像,计算目标移动物体的动态矢量。
进一步的,通过智能终端微处理器并结合多张目标移动物体的运动图像,计算目标移动物体的动态矢量,包括:
通过智能终端微处理器将多张运动图像中,每一张运动图像与其前一张运动图像进行比较;
通过智能终端微处理器记录每一次比较后得到的目标移动物体的位移矢量;位移矢量包括位移大小和位移方向。
进一步的,根据动态矢量控制镜头沿移动方向相反的方向进行移动,包括:
当快门被按下时,停止智能终端微处理器对多张运动图像进行比较;
通过智能终端微处理器获取最后一次比较后的位移矢量;
根据预设的时间间隔和最后一次比较后的位移矢量,计算运动图像的动态矢量;动态矢量包括移动速度和移动方向;
通过集成电路总线 I2C 接口将动态矢量发送给马达控制芯片;
通过马达控制芯片并结合动态矢量,控制马达在曝光时间内以与移动方向相反的方向带动镜头以移动速度相同的速度平移。
在本发明的实施例中提供了一种具有动态追拍功能的移动终端,包括:智能终端微处理器和摄像模组;
摄像模组包括:图像传感器、马达控制芯片、马达驱动、马达和镜头;其中,
图像传感器,用于实时采集目标移动物体的移动信息;
智能终端微处理器,与图像传感器连接,用于根据图像传感器采集的移动信息计算目标移动物体的动态矢量,动态矢量包括移动速度和移动方向;
马达控制芯片,分别与智能终端微处理器及马达驱动连接,用于在快门被按下时,根据智能终端微处理器计算得到的动态矢量控制马达驱动工作;
马达,与马达驱动连接,用于在马达驱动的控制下工作;
镜头,与马达连接,用于在马达的控制下沿移动方向相反的方向进行移动。
进一步的,该移动终端中,图像传感器还用于,在预览模式中,以预设的时间间隔对目标移动物体进行拍照,获得多张目标移动物体的运动图像;其中,移动信息包括目标移动物体的运动图像。
进一步的,该移动终端中,图像传感器还用于,将获得的多张目标移动物体的运动图像发送给智能终端微处理器;
智能终端微处理器还用于,根据多张目标移动物体的运动图像,计算目标移动物体的动态矢量。
进一步的,该移动终端中,智能终端微处理器还用于,将多张运动图像中,每一张运动图像与其前一张运动图像进行比较;记录每一次比较后得到的目标移动物体的位移矢量;位移矢量包括位移大小和位移方向。
进一步的,该移动终端中,智能终端微处理器还用于,当快门被按下时,停止对多张运动图像进行比较;获取最后一次比较后的位移矢量;根据预设的时间间隔和最后一次比较后的位移矢量,计算运动图像的动态矢量;动态矢量包括移动速度和移动方向;通过 I2C 接口将动态矢量发送给马达控制芯片;
马达控制芯片还用于,根据动态矢量,使马达驱动控制马达在曝光时间内以与移动方向相反的方向带动镜头以与移动速度相同的速度平移。
本发明实施例提供的具有动态追拍功能的移动终端及其动态追拍方法,包括:通过摄像模组实时采集目标移动物体的移动信息;根据移动信息计算目标移动物体的动态矢量,动态矢量包括移动速度和移动方向;在快门被按下时,根据动态矢量控制镜头沿移动方向相反的方向进行移动,与现有技术中移动终端的拍照方法,需要牺牲图像的分辨率或者曝光时间,才能获得移动物体的清晰照片的方案相比,其通过控制镜头根据目标移动物体的移动速度以与目标移动物体相反的方向移动,从而抵消目标移动物体与镜头产生的相对移动,能够带来如下有益效果:
1 、当景物与拍摄者存在相对运动时,可在不损失图像分辨率和曝光时间的前提下,获得清晰图像;
2 、不会过多占用系统资源据处理资源,同时还能够保持画幅和视角的不变。
附图说明
图 1 示出了本发明实施例提供的具有动态追拍功能的移动终端的结构示意图;
图 2 示出了本发明实施例提供一种移动终端的动态追拍方法的流程图;
图 3 示出了本发明实施例提供另一种移动终端的动态追拍方法的流程图;
图 4 示出了本发明实施例提供又一种移动终端的动态追拍方法的流程图;
图 5 示出了本发明实施例提供的又一种具有动态追拍功能的移动终端的结构示意图。
具体实施方式
下面将结合本实施例中的附图,对本实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
为便于对本实施例进行理解,首先对本实施例所基于的移动终端进行简要说明。如图 1 所示,本发明所涉及的移动终端上设置有摄像模组 11 和智能终端微处理器 12 ;其中,摄像模组 11 主要包括马达控制芯片 110 、马达驱动 111 和马达 112 ,其中,马达驱动 111 可以为多轴马达驱动,马达可以为多轴对焦马达,马达 112 上设置有镜头 113 ;其中,马达驱动 111 和马达 112 可以为现有的三轴马达驱动和三轴对焦马达和镜头;并且,摄像模组 11 上还设置有图像传感器 114 ,该图像传感器 114 用于将采集到的图像信息转换成电子信号;在该移动终端中,马达控制芯片 110 可以控制马达驱动 111 驱动马达 112 上的镜头 113 移动;另外,图像传感器 114 和智能终端微处理器 12 之间可以进行数据通信,且马达控制芯片 110 和智能终端微处理器 12 之间也能够进行数据通信。
实施例 1
本发明实施例提供了一种移动终端的动态追拍方法,如图 2 所示,具体包括:
101 、通过摄像模组实时采集目标移动物体的移动信息。
本实施例中,通过摄像模组内的图像传感器采集多帧目标移动物体的运动图像,即目标移动物体的移动信息;其中,目标移动物体为用户想要拍摄的移动的物体。当一个镜头内同时有多个移动物体时,以图像传感器所捕捉到的其中一个移动物体为准,实时采集多帧该移动物体的运动图像。
102 、根据移动信息计算目标移动物体的动态矢量,动态矢量包括移动速度和移动方向。
具体的,移动信息具体包括目标移动物体的运动图像,根据不同时间目标移动物体的运动图像确定该目标移动物体的移动位移;根据移动位移,并通过比较算法计算目标移动物体的移动速度和移动方向。
103 、在快门被按下时,根据动态矢量控制镜头沿移动方向相反的方向进行移动。
具体的,在拍照快门启动的同时,移动终端通过智能终端微处理器将动态矢量传输给马达控制芯片。其中,以镜头所在水平面为 X 轴,以镜头所在竖直面为 Y 轴,建立直角坐标系,马达控制芯片根据动态矢量(即移动速度的大小和方向)使马达驱动控制以与移动速度相同的速度和与移动方向相反的方向带动多轴马达移动,从而是多轴马达带动镜头在 X 和 Y 方向做相应平移,以抵消图像在图像传感器上的移动。
本发明实施例提供的具有动态追拍功能的移动终端在拍照时的动态追拍方法,包括:通过摄像模组实时采集目标移动物体的移动信息;根据移动信息计算目标移动物体的动态矢量,动态矢量包括移动速度和移动方向;在快门被按下时,根据动态矢量控制镜头沿移动方向相反的方向进行移动,与现有技术中移动终端的拍照方法,需要牺牲图像的分辨率或者曝光时间,才能获得移动物体的清晰照片的方案相比,其通过控制镜头根据目标移动物体的移动速度以与目标移动物体相反的方向移动,从而抵消目标移动物体与镜头产生的相对移动,能够带来如下有益效果:
1 、当景物与拍摄者存在相对运动时,可在不损失图像分辨率和曝光时间的前提下,获得清晰图像;
2 、不会过多占用系统资源据处理资源,同时还能够保持画幅和视角的不变。
实施例 2
本发明实施例提供了一种移动终端的动态追拍方法,如图 3 所示,具体为:
201 、启动移动终端上的相机应用的预览模式。
具体的,对于智能移动终端,用户可以用手触碰移动应用 ' 相机 ' ,从而开打相机,此时,相机进入预览模式;对与非智能移动终端,用户可以手动按下移动应用中控制 ' 相机 ' 的按键,从而开打相机,此时,相机同样进入预览模式。
202 、在预览模式中,通过摄像模组以预设的时间间隔对目标移动物体进行拍照,获得多张目标移动物体的运动图像。
具体的,在预览模式中,摄像模组中的图像传感器以自身特定的帧频率对目标移动物体进行拍照;帧频率是一预设值,即每一个摄像模组都对应一个帧频率。其中,不同的摄像模组的帧频率不同;具体的,用户可根据移动终端使用的摄像模组来确定帧频率的具体数值。
203 、通过摄像模组将获得的多张目标移动物体的运动图像发送给智能终端微处理器。
具体的,发送方式可以是通过无线方式发送,也可以通过摄像模组与智能终端微处理器之间的接口进行发送。
204 、通过智能终端微处理器将多张运动图像中,每一张运动图像与其前一张运动图像进行比较。
具体的,智能终端微处理器按顺序接收多张运动图像,并确定接收到的每张运动图像所在的位置(以该图像所在的像素点来描述),将后一张接收到的运动图像的像素点与前一张图像所处的像素点进行比较,计算像的动态移动方向以及移动距离(以像素数为单位)。例如,接收到的第一张图像的位置是( x , y );第二张图像的位置是( x , y1 ),从而计算出像的动态移动距离为 y1-y ,若 y1 大于 y ,则可以确定像的动态移动方向为水平向右。
205 、通过智能终端微处理器记录每一次比较后得到的目标移动物体的位移矢量;位移矢量包括位移大小和位移方向。
具体的,每两张运动图像进行比较后,智能终端微处理器均记录下位移矢量(即像的动态移动方向和动态移动距离),以便获取其中的某一时刻的位移矢量,并根据该时刻的位移矢量计算动态矢量。
或者,当第一次的两张运动图像进行比较后,智能终端微处理器记录下第一次所计算的位移矢量(即像的动态移动方向和动态移动距离),当第二次的两张运动图像在进行比较后,智能终端微处理器将第二次所计算的位移矢量替换第一次的位移矢量(即像的动态移动方向和动态移动距离),并保存。
206 、当快门被按下时,停止智能终端微处理器对多张运动图像进行比较。
具体的,智能终端微处理器停止比较后,记录下所有比较后的位移矢量。
207 、通过智能终端微处理器获取最后一次比较后的位移矢量。
当快门被按下时,智能终端微处理器获取最后一次比较后的位移矢量,并将该最后一次比较后的位移矢量发送给马达控制芯片,以便马达控制芯片根据该最后一次比较后的位移矢量计算动态矢量。
208 、根据预设的时间间隔和最后一次比较后的位移矢量,计算运动图像的动态矢量;动态矢量包括移动速度和移动方向。
具体的,帧频率的倒数即为采集目标移动物体的运动图像的预设的时间间隔;马达控制芯片根据公式 v=s/t ,即可计算出目标移动物体的移动速度和移动方向。
209 、通过 I2C 接口将动态矢量发送给马达控制芯片。
具体的,移动终端上的智能终端微处理器通过 I2C 接口将包含目标移动物体的移动速度和移动方向的信息发送给摄像模组中的马达控制芯片,以便马达控制芯片根据该信息进行后续操作。
210 、通过马达控制芯片并结合动态矢量控制马达在曝光时间内以与动态矢量相反的方向带动镜头平移,用以消除镜头与图像的相对移动。
具体的,马达控制芯片接收目标移动物体的移动速度和移动方向的动态矢量信息后,并生成控制指令,将该控制指令发送给马达驱动,马达驱动根据上述控制指令控制马达以上述移动速度带动镜头与移动方向相反的方向移动,用以抵消图像在图像传感器上的移动。
本发明实施例提供的具有动态追拍功能的移动终端在拍照时的动态追拍方法,包括:通过摄像模组实时采集目标移动物体的移动信息;根据移动信息计算目标移动物体的动态矢量,动态矢量包括移动速度和移动方向;在快门被按下时,根据动态矢量控制镜头沿移动方向相反的方向进行移动,与现有技术中移动终端的拍照方法,需要牺牲图像的分辨率或者曝光时间,才能获得移动物体的清晰照片的方案相比,其通过控制镜头根据目标移动物体的移动速度以与目标移动物体相反的方向移动,从而抵消目标移动物体与镜头产生的相对移动,能够带来如下有益效果:
1 、当景物与拍摄者存在相对运动时,可在不损失图像分辨率和曝光时间的前提下,获得清晰图像;
2 、不会过多占用系统资源据处理资源,同时还能够保持画幅和视角的不变。
实施例 3
本发明实施例还提供了一种移动终端的动态追拍方法,如图 4 所示,具体为:
301 、按下移动终端上的相机应用启动相机的预览模式。
302 、在预览模式中,图像传感器根据预设的帧频率实时采集目标移动物体的移动信息;其中,移动信息包括多张目标移动物体的运动图像。
303 、图像传感器将多张目标移动物体的运动图像发送给智能终端微处理器。
304 、智能终端微处理器接收多张目标移动物体的运动图像,并将多张运动图像中,每一张运动图像与其前一张运动图像进行比较。
305 、智能终端微处理器记录每一次比较后得到的目标移动物体的位移矢量;位移矢量包括位移大小和位移方向。
306 、当快门被按下时,智能终端微处理器停止对多张运动图像进行比较,并获取最后一次比较后的位移矢量。
307 、智能终端微处理器根据预设的帧频率和最后一次比较后的位移矢量,计算运动图像的动态矢量,并将得到的动态矢量通过 I2C 接口发送给马达控制芯片。
308 、马达控制芯片通过 I2C 接口接收动态矢量,在按下快门的同时,根据动态矢量生成控制指令,并将该控制指令发送给马达驱动。
309 、马达驱动接收控制指令,并根据该控制指令控制马达以上述移动速度带动镜头与移动方向相反的方向移动,用以抵消图像在图像传感器上的移动。
本发明实施例提供的具有动态追拍功能的移动终端的在拍照时的动态追拍方法,包括:通过摄像模组实时采集目标移动物体的移动信息;根据移动信息计算目标移动物体的动态矢量,动态矢量包括移动速度和移动方向;在快门被按下时,根据动态矢量控制镜头沿移动方向相反的方向进行移动,与现有技术中移动终端的拍照方法,需要牺牲图像的分辨率或者曝光时间,才能获得移动物体的清晰照片的方案相比,其通过控制镜头根据目标移动物体的移动速度以与目标移动物体相反的方向移动,从而抵消目标移动物体与镜头产生的相对移动,能够带来如下有益效果:
1 、当景物与拍摄者存在相对运动时,可在不损失图像分辨率和曝光时间的前提下,获得清晰图像;
2 、不会过多占用系统资源据处理资源,同时还能够保持画幅和视角的不变。
实施例 4
本发明实施例中提供了一种具有动态追拍功能的移动终端,如图 5 所示,包括:智能终端微处理器 12 和摄像模组 11 ;
摄像模组 11 包括:图像传感器 114 、马达控制芯片 110 、马达驱动 111 、马达 112 和镜头 113 ;其中,
图像传感器 114 ,用于实时采集目标移动物体的移动信息。
智能终端微处理器 12 ,与图像传感器 114 连接,用于根据图像传感器 114 采集的移动信息计算目标移动物体的动态矢量,动态矢量包括移动速度和移动方向。
马达控制芯片 110 ,分别与智能终端微处理器 12 及马达驱动 111 连接,用于在快门被按下时,根据智能终端微处理器 12 计算得到的动态矢量控制马达驱动 111 工作。
马达 112 ,与马达驱动 111 连接,用于在马达驱动 111 的控制下工作。
镜头 113 ,与马达 112 连接,用于在马达 112 的控制下沿移动方向相反的方向进行移动。
进一步的,该移动终端中,图像传感器 114 还用于,在预览模式中,以预设的时间间隔对目标移动物体进行拍照,获得多张目标移动物体的运动图像;其中,移动信息包括目标移动物体的运动图像。
进一步的,该移动终端中,图像传感器 114 还用于,将获得的多张目标移动物体的运动图像发送给智能终端微处理器 12 。
智能终端微处理器 12 还用于,根据多张目标移动物体的运动图像,计算目标移动物体的动态矢量。
进一步的,该移动终端中,智能终端微处理器 12 还用于,将多张运动图像中,每一张运动图像与其前一张运动图像进行比较;记录每一次比较后得到的目标移动物体的位移矢量;位移矢量包括位移大小和位移方向。
进一步的,该移动终端中,智能终端微处理器 12 还用于,当快门被按下时,停止对多张运动图像进行比较;获取最后一次比较后的位移矢量;根据预设的时间间隔和最后一次比较后的位移矢量,计算运动图像的动态矢量;动态矢量包括移动速度和移动方向;通过 I2C 接口将动态矢量发送给马达控制芯片 110 。
马达控制芯片 110 还用于,根据动态矢量,使马达驱动 111 控制马达 112 在曝光时间内以与移动方向相反的方向带动镜头 113 以移动速度相同的速度平移。
本发明实施例提供的具有动态追拍功能的移动终端,包括:智能终端微处理器 12 和摄像模组 11 ;摄像模组 11 包括:图像传感器 114 、马达控制芯片 110 、马达驱动 111 、马达 112 和镜头 113 ;其中,图像传感器 114 ,用于实时采集目标移动物体的移动信息。智能终端微处理器 12 ,与图像传感器 114 连接,用于根据图像传感器 114 采集的移动信息计算目标移动物体的动态矢量,动态矢量包括移动速度和移动方向。马达控制芯片 110 ,分别与智能终端微处理器 12 及马达驱动 111 连接,用于在快门被按下时,根据智能终端微处理器 12 计算得到的动态矢量控制马达驱动 111 工作。马达 112 ,与马达驱动 111 连接,用于在马达驱动 111 的控制下工作。镜头 113 ,与马达 112 连接,用于在马达 112 的控制下沿移动方向相反的方向进行移动,与现有技术中移动终端,需要牺牲图像的分辨率或者曝光时间,才能获得移动物体的清晰照片的方案相比,其通过控制镜头根据目标移动物体的移动速度以与目标移动物体相反的方向移动,从而抵消目标移动物体与镜头产生的相对移动,能够带来如下有益效果:
1 、当景物与拍摄者存在相对运动时,可在不损失图像分辨率和曝光时间的前提下,获得清晰图像;
2 、不会过多占用系统资源据处理资源,同时还能够保持画幅和视角的不变。
以上所述仅为本发明的优选实施例而已,并不用于限制本发明,对于本领域的技术人员来说,本发明可以有各种更改和变化。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种移动终端的动态追拍方法,其特征在于,包括: 通过摄像模组实时采集目标移动物体的移动信息; 根据所述移动信息计算所述目标移动物体的动态矢量,所述动态矢量包括移动速度和移动方向; 在快门被按下时,根据所述动态矢量控制镜头沿所述移动方向相反的方向进行移动。
  2. 根据权利要求 1 所述的方法,其特征在于,所述移动信息包括:目标移动物体的运动图像; 所述通过摄像模组实时采集目标移动物体的移动信息,包括: 启动移动终端上的相机应用的预览模式; 在所述预览模式中,通过所述摄像模组以预设的时间间隔对所述目标移动物体进行拍照,获得多张所述目标移动物体的运动图像。
  3. 根据权利要求 2 所述的方法,其特征在于,所述根据所述移动信息计算所述目标移动物体的动态矢量,包括: 通过所述摄像模组将获得的多张所述目标移动物体的运动图像发送给智能终端微处理器; 通过所述智能终端微处理器并结合所述多张所述目标移动物体的运动图像,计算所述目标移动物体的动态矢量。
  4. 根据权利要求 3 所述的方法,其特征在于,所述通过所述智能终端微处理器并结合所述多张所述目标移动物体的运动图像,计算所述目标移动物体的动态矢量,包括: 通过所述智能终端微处理器将多张所述运动图像中,每一张所述运动图像与其前一张所述运动图像进行比较; 通过所述智能终端微处理器记录每一次比较后得到的所述目标移动物体的位移矢量;所述位移矢量包括位移大小和位移方向。
  5. 根据权利要求 4 所述的方法,其特征在于,所述根据所述动态矢量控制镜头沿所述移动方向相反的方向进行移动,包括: 当快门被按下时,停止所述智能终端微处理器对多张所述运动图像进行比较; 通过所述智能终端微处理器获取最后一次比较后的位移矢量; 根据所述预设的时间间隔和所述最后一次比较后的位移矢量,计算所述运动图像的动态矢量;所述动态矢量包括移动速度和移动方向; 通过集成电路总线 I2C 接口将所述动态矢量发送给马达控制芯片; 通过所述马达控制芯片并结合所述动态矢量,控制马达在曝光时间内以与所述移动方向相反的方向带动所述镜头以所述移动速度相同的速度平移。
  6. 一种具有动态追拍功能的移动终端,其特征在于,包括:智能终端微处理器和摄像模组; 所述摄像模组包括:图像传感器、马达控制芯片、马达驱动、马达和镜头;其中, 所述图像传感器,用于实时采集目标移动物体的移动信息; 所述智能终端微处理器,与所述图像传感器连接,用于根据所述图像传感器采集的所述移动信息计算所述目标移动物体的动态矢量,所述动态矢量包括移动速度和移动方向; 所述马达控制芯片,分别与所述智能终端微处理器及所述马达驱动连接,用于在快门被按下时,根据所述智能终端微处理器计算得到的动态矢量控制所述马达驱动工作; 所述马达,与所述马达驱动连接,用于在所述马达驱动的控制下工作; 所述镜头,与所述马达连接,用于在所述马达的控制下沿所述移动方向相反的方向进行移动。
  7. 根据权利要求 6 所述的移动终端,其特征在于,所述图像传感器还用于,在预览模式中,以预设的时间间隔对所述目标移动物体进行拍照,获得多张所述目标移动物体的运动图像;其中,所述移动信息包括目标移动物体的运动图像。
  8. 根据权利要求 7 所述的移动终端,其特征在于, 所述图像传感器还用于,将获得的多张所述目标移动物体的运动图像发送给智能终端微处理器; 所述智能终端微处理器还用于,根据所述多张所述目标移动物体的运动图像,计算所述目标移动物体的动态矢量。
  9. 根据权利要求 8 所述的移动终端,其特征在于,所述智能终端微处理器还用于,将多张所述运动图像中,每一张所述运动图像与其前一张所述运动图像进行比较;记录每一次比较后得到的所述目标移动物体的位移矢量;所述位移矢量包括位移大小和位移方向。
  10. 根据权利要求 9 所述的移动终端,其特征在于,所述智能终端微处理器还用于,当快门被按下时,停止对多张所述运动图像进行比较;获取最后一次比较后的位移矢量;根据所述预设的时间间隔和所述最后一次比较后的位移矢量,计算所述运动图像的动态矢量;所述动态矢量包括移动速度和移动方向;通过 I2C 接口将所述动态矢量发送给马达控制芯片; 所述马达控制芯片还用于,根据所述动态矢量,使所述马达驱动控制所述马达在曝光时间内以与所述移动方向相反的方向带动所述镜头以与所述移动速度相同的速度平移。
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