WO2015131491A1 - 一种提示用户的方法、电子设备及计算机存储介质 - Google Patents

一种提示用户的方法、电子设备及计算机存储介质 Download PDF

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Publication number
WO2015131491A1
WO2015131491A1 PCT/CN2014/084162 CN2014084162W WO2015131491A1 WO 2015131491 A1 WO2015131491 A1 WO 2015131491A1 CN 2014084162 W CN2014084162 W CN 2014084162W WO 2015131491 A1 WO2015131491 A1 WO 2015131491A1
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WO
WIPO (PCT)
Prior art keywords
angle
electronic device
optical axis
solar
axis direction
Prior art date
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PCT/CN2014/084162
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English (en)
French (fr)
Inventor
吕程
Original Assignee
中兴通讯股份有限公司
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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Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US15/326,269 priority Critical patent/US20170201678A1/en
Publication of WO2015131491A1 publication Critical patent/WO2015131491A1/zh

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Classifications

    • 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
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C1/00Measuring angles
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/78Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using electromagnetic waves other than radio waves
    • G01S3/782Systems for determining direction or deviation from predetermined direction
    • G01S3/785Systems for determining direction or deviation from predetermined direction using adjustment of orientation of directivity characteristics of a detector or detector system to give a desired condition of signal derived from that detector or detector system
    • G01S3/786Systems for determining direction or deviation from predetermined direction using adjustment of orientation of directivity characteristics of a detector or detector system to give a desired condition of signal derived from that detector or detector system the desired condition being maintained automatically
    • G01S3/7861Solar tracking systems
    • 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
    • H04N23/61Control of cameras or camera modules based on recognised objects
    • 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
    • H04N23/64Computer-aided capture of images, e.g. transfer from script file into camera, check of taken image quality, advice or proposal for image composition or decision on when to take image

Definitions

  • the present invention relates to the field of digital photography, and more particularly to a method, an electronic device and a computer storage medium for prompting a user. Background technique
  • image collection devices for photographing are also provided on devices such as smart phones, tablet computers, superbooks, multimedia players, and the like. So that users can take photos anytime, anywhere.
  • embodiments of the present invention are expected to provide a method for prompting a user, an electronic device, and a computer storage medium to improve photographing efficiency, facilitate user operation, and provide a good user experience.
  • an embodiment of the present invention provides a method for prompting a user, which is applied to an electronic device.
  • the method includes:
  • the obtaining the solar azimuth of the current time includes: obtaining a latitude of the current location of the electronic device, a solar declination of the current time, and a solar elevation angle of the current time;
  • the solar azimuth is obtained by the solar declination and the solar elevation angle.
  • the obtaining an optical axis direction angle of the lens disposed on the electronic device includes: obtaining an orientation direction of the lens; determining an angle between the orientation direction and the reference direction as the Optical axis direction angle.
  • the determining the to-be-adjusted angle based on the current shooting angle includes: determining a corresponding preset threshold when the current shooting angle meets a preset condition; Before determining the corresponding preset threshold when the current shooting angle meets the preset condition, the method further includes: determining a type of the shooting object, and determining the preset condition according to the type.
  • an embodiment of the present invention provides an electronic device, where the electronic device includes: a first obtaining unit configured to obtain a solar azimuth angle of a current moment and an optical axis direction angle of a lens disposed on the electronic device, where The sun azimuth has the same reference direction as the optical axis direction angle;
  • a second obtaining unit configured to obtain a current shooting angle based on the solar azimuth angle and the optical axis direction angle
  • a first determining unit configured to determine an angle to be adjusted based on the current shooting angle;
  • the unit is configured to prompt the user to adjust based on the to-be-adjusted angle.
  • the first obtaining unit is configured to obtain a latitude of a location where the electronic device is currently located, a solar declination of the current time, and a solar elevation angle of the current time; based on the latitude, the solar declination And the solar elevation angle, the solar azimuth angle is obtained.
  • the first obtaining unit is configured to obtain an orientation direction of the lens; and determine an angle between the orientation direction and the reference direction as the optical axis direction angle.
  • the first determining unit is configured to: when the current shooting angle meets a preset condition, determine a corresponding preset threshold; determine a difference between the current shooting angle and the preset threshold For the angle to be adjusted.
  • the electronic device further includes: a second determining unit, configured to: when the current capturing angle meets a preset condition, the second obtaining unit determines the corresponding target before determining the corresponding preset threshold Type, and determining the preset condition according to the type.
  • an embodiment of the present invention provides a computer storage medium, where the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the foregoing method.
  • the method includes: first obtaining a solar azimuth angle at a current time and an optical axis direction angle of a lens set on the electronic device, where The solar azimuth has the same reference direction as the optical axis direction angle, and then, based on the solar azimuth and the optical axis direction angle, the current shooting angle, that is, the position of the sun relative to the object, is obtained, and then, the current shooting angle is determined to be adjusted. Angle, and prompt the user to adjust to the angle to be adjusted.
  • the electronic device can automatically acquire the current shooting angle and determine the angle to be adjusted, then the user only needs to adjust to the angle to be adjusted according to the prompt, and can obtain a better photographing effect without having to go over and over again.
  • the technical problem of low photographing efficiency existing in the prior art is effectively solved, the photographing efficiency is improved, the user operation is facilitated, and a good user experience is provided.
  • FIG. 1 is a schematic flowchart of a method for prompting a user in an embodiment of the present invention
  • FIG. 2 is a schematic view of a solar azimuth angle in an embodiment of the present invention.
  • FIG. 3 is a schematic view showing an optical axis direction angle in an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a current shooting angle in an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of a method for prompting a user in a backlighting scenario according to an embodiment of the present invention
  • FIG. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present invention. detailed description
  • Embodiments of the present invention provide a method for prompting a user, which is applied to an electronic device such as a smart phone, a tablet computer, a SLR camera, a digital camera, a multimedia player, and the like.
  • an electronic device such as a smart phone, a tablet computer, a SLR camera, a digital camera, a multimedia player, and the like.
  • These electronic devices are provided with an image collecting device for photographing, and are also provided with a Global Positioning System (GPS) module, and devices such as a gyroscope and an electronic compass.
  • GPS Global Positioning System
  • FIG. 1 is a schematic flowchart of a method for prompting a user in an embodiment of the present invention. Referring to FIG. 1, the method includes:
  • S101 obtaining a solar azimuth angle of the current moment and an optical axis direction angle of the lens disposed on the electronic device, wherein the solar azimuth angle and the optical axis direction angle have the same reference direction;
  • the electronic device obtains the latitude ⁇ of its current location, and obtains the current date and time t.
  • the electronic device can obtain the latitude of the current location through the GPS module, obtain the current date and time through the clock module, and of course, obtain the current date and time through the synchronization time of the GPS module and the satellite.
  • the invention is not specifically limited.
  • the electronic device calculates the sun declination and the solar elevation angle at the current time;
  • the number of days in the current date is, for example, the number of days on January 1 is 1, and the number of days W on December 31 is 365.
  • the latitude ⁇ , the time angle, and the solar declination are brought into the formula (3) to calculate the solar elevation angle.
  • the solar elevation angle refers to the angle between the incident direction of the sunlight and the ground plane.
  • the electronic device obtains the solar azimuth angle at the current moment based on the latitude, the solar declination, and the solar elevation angle;
  • the electronic device calculates the solar azimuth angle by the following formula (4); wherein, the solar azimuth angle is the starting direction of the north direction of the object, and the incident direction of the sunlight is the ending direction, in a clockwise direction
  • the angle of measurement, as shown in Figure 2, at this time, the reference direction is the true north direction of the position where the subject is located.
  • the orientation direction of the lens of the image collecting device is obtained by a device such as a gyroscope or an electronic compass, and the orientation direction and the reference direction, that is, the object to be photographed, are obtained.
  • the angle between the true north directions of the position is determined to be light Axis direction angle.
  • the optical axis direction angle is the clockwise angle between the vector pointing the subject and the reference direction.
  • the optical axis direction angle is recorded as shown in Fig. 3.
  • S102 Obtain a current shooting angle based on a solar azimuth angle and an optical axis direction angle
  • the difference between the solar azimuth angle and the optical axis direction angle is the current shooting angle, that is, between the incident direction of the sunlight and the back of the subject. Angle.
  • the solar azimuth 90°
  • the optical axis direction angle ⁇ 270°
  • the current shooting angle
  • 180. .
  • S103 Determine an angle to be adjusted based on the current shooting angle, and prompt the user to adjust according to the angle to be adjusted.
  • the electronic device determines a corresponding angle preset threshold according to the current shooting angle, and then determines a difference between the current shooting angle and the preset threshold as the to-be-adjusted angle. Finally, the electronic device prompts the user to adjust according to the angle to be adjusted.
  • three shooting angle ranges are defined: [0. , 20. ] and [340. , 360° ) is defined as the range of the back light angle; [160° , 200° ] is defined as the range of the angle of the light; (20., 160.) and (200., 340.) are defined as the range of the soft angle.
  • the preset condition may be one or more of the current shooting angle being within the range of the backlight angle, the current shooting angle being within the range of the smoothing angle, or the current shooting angle being within the range of the softening angle, and of course other The conditions are not specifically limited in the present invention.
  • the electronic device determines that the current shooting angle is within the range of the smoothing angle, and satisfies the preset condition.
  • the electronic device determines an angle preset threshold corresponding to the range of the smoothing angle, That is, the two boundary values of the range of the angle of the light, that is, 160° and The adjustment angle is 20°.
  • the electronic device generates an angle adjustment display interface, prompting the user to move the subject to the left or right by 20°, or to move the left or right by 20°, and adjust the shooting angle to soft light. In the range of angles, the photos taken at this time have a better effect.
  • the method further includes: determining a type of the subject, and determining a preset condition according to the type. That is to say, before determining the corresponding preset threshold, the electronic device needs to determine a corresponding preset condition according to the type of the photographic object.
  • the electronic device obtains a cache image of the current shooting angle through the image collecting device, and performs processing such as face recognition, object recognition, and the like on the image to determine the type of the captured object. For example, after the face recognition of the cached image, the electronic device recognizes that there is at least one face, and then determines that the subject is a person; or, after the face recognition of the cached image, the electronic device recognizes that there is no one in the object. Preferably, the electronic device determines whether the value of the solar elevation angle obtained in the above step is close to 0°, and if so, the electronic device determines that the subject is the sun at sunrise or sunset. Of course, there are other ways of determining the type of the subject, which are not specifically limited by the present invention.
  • the corresponding preset condition may be: the current shooting angle is within the range of the backlight angle, or the current shooting angle is within the range of the angle of the light; and the type of the object is sunrise or sunset.
  • the corresponding preset condition can be: The current shooting angle is in the range of the angle of the light or the angle of the soft light.
  • the electronic device determines that the current shooting angle satisfies the After the preset condition, the corresponding angle preset threshold is determined according to the current shooting angle, and then the difference between the current shooting angle and the preset threshold is determined as the to-be-adjusted angle. Finally, the electronic device prompts the user to perform the adjustment based on the angle to be adjusted. Adjustment.
  • the current time is from 11:00 am on the summer of 2014 to June 21, the user takes a photo in Shanghai, the subject is a person, and the shooting scene is a backlit scene.
  • FIG. 5 is a schematic flowchart of a method for prompting a user in a backlighting scenario according to an embodiment of the present invention. Referring to FIG. 5, the method includes:
  • S508 Face recognition of the subject, determine the current type of subject is human;
  • S509 Determine the angle of backlight Within the range, and determine the corresponding preset threshold, which is 340. And 20. ;
  • S511 Generate a prompt interface, prompting the user to move the subject to the left or right A; that is, prompting the user to move 10 to the left. Or move 40 to the right. .
  • the current shooting angle is also displayed in real time on the prompting interface to prompt the user for the remaining number of degrees of rotation.
  • the electronic device can automatically acquire the current shooting angle and determine the angle to be adjusted. Then, the user only needs to adjust the angle to be adjusted according to the prompt, so that a better photographing effect can be obtained without having to go over and over again. In this way, the technical problem of low photographing efficiency existing in the prior art is effectively solved, the photographing efficiency is improved, the user operation is facilitated, and a good user experience is provided.
  • the embodiment of the invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the foregoing method for prompting a user.
  • an embodiment of the present invention provides an electronic device that is consistent with an electronic device in one or more of the above embodiments.
  • FIG. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
  • the electronic device includes: a first obtaining unit 61 configured to obtain a solar azimuth of a current moment and a light of a lens disposed on the electronic device. An axial direction angle, wherein the solar azimuth has the same reference direction as the optical axis direction angle; the second obtaining unit 62 is configured to obtain a current shooting angle based on the solar azimuth and the optical axis direction angle; the first determining unit 63 is configured to The angle to be adjusted is determined based on the current shooting angle; the prompting unit 64 is configured to prompt the user to adjust based on the angle to be adjusted.
  • the first obtaining unit 61 is configured to obtain the latitude of the current location of the electronic device, the solar declination of the current time, and the solar elevation angle of the current time; based on the latitude, the current time of the sun declination, and the current time The sun's elevation angle, the sun's azimuth.
  • the first obtaining unit 61 is configured to obtain an orientation direction of the lens; and an angle between the orientation direction and the reference direction is determined as an optical axis direction angle.
  • the first determining unit 63 is configured to determine a preset threshold corresponding to the current shooting angle; and determine a difference between the current shooting angle and the preset threshold as the to-be-adjusted angle.
  • the electronic device further includes: a second determining unit configured to determine a type of the photographic object before determining the corresponding preset threshold when the second obtaining unit 62 determines that the current shooting angle meets the preset condition, and according to the shooting The type of the object determines the preset condition.
  • the first obtaining unit 61, the second obtaining unit 62, the first determining unit 63, the prompting unit 64, and the second determining unit may be, for example, a central processing unit CPU, an advanced reduced instruction in the electronic device.
  • the invention is not limited by the invention, which is implemented by a machine ARM, a digital signal processing DSP, or a microprocessor MPU, or a field programmable gate array FPGA.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment of a combination of software and hardware. Moreover, the invention can be embodied in the form of a computer program product embodied on one or more computer usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded into a computer or other programmable data processing device Having a series of operational steps performed on a computer or other programmable device to produce computer-implemented processing, such that instructions executed on a computer or other programmable device are provided for implementing a process or processes in a flowchart and/or Or block diagram the steps of a function specified in a box or multiple boxes.
  • an electronic device, and a computer storage medium for prompting a user includes: obtaining a solar azimuth angle at a current time and an optical axis direction angle of a lens disposed on an electronic device, the solar azimuth angle and The optical axis direction angles have the same reference direction. Based on the solar azimuth angle and the optical axis direction angle, the current shooting angle is obtained, the angle to be adjusted is determined based on the current shooting angle, and the user is prompted to adjust to the angle to be adjusted.
  • the user only needs to adjust to the angle to be adjusted according to the prompt, so that a better photographing effect can be obtained without the need to try again and again, thus effectively solving the low photographing efficiency existing in the prior art.
  • Technical problems improve camera efficiency, user-friendly operation, and provide a good user experience.

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Abstract

一种提示用户的方法以及电子设备,该方法应用于电子设备,该方法包括:(S101)获得当前时刻的太阳方位角以及所述电子设备上设置的镜头的光轴方向角,其中,所述光轴方向角与所述太阳方位角具有相同的基准方向;(S102)基于所述太阳方位角和所述光轴方向角,获得当前拍摄角度;(S103)基于所述拍摄角度确定待调整角度,并提示用户基于所述待调整角度进行调整。

Description

一种提示用户的方法、 电子设备及计算积 储介质 技术领域
本发明涉及数码摄影领域, 尤其涉及一种提示用户的方法、 电子设备 及计算机存储介质。 背景技术
为了满足用户对于拍照的需求, 除了在单反相机、 数码相机等专业的 摄影设备之外, 在如智能手机、 平板电脑、 超级本、 多媒体播放器等设备 上也设置有用于拍照的图像釆集装置, 这样用户就能够随时随地进行拍照 了。
目前, 用户在使用上述电子设备进行拍照时, 大多根据肉眼观察或者 个人经验来选取合适拍摄角度, 以获得较为理想的照片效果。 但是由于个 人经验的差异, 往往得不到理想的照片, 此时, 用户就需要对拍摄拍摄角 度进行调整, 以得到最为理想的照片效果, 但是在调整过程中, 用户需要 一边调整一边尝试拍摄, 然后根据尝试拍摄的照片确定出最佳的拍摄拍摄 角度。 这样, 就使得这个拍照的过程耗时较多, 又因为整个调整过程均由 用户手工进行, 所以, 就存在现有技术中拍照效率低的技术问题。 发明内容
为解决现有存在的技术问题, 本发明实施例期望提供一种提示用户的 方法、 电子设备及计算机存储介质, 以提高拍照效率, 方便用户操作, 提 供良好的用户体验。
本发明的技术方案是这样实现的:
第一方面, 本发明实施例提供一种提示用户的方法, 应用于电子设备, 所述方法包括:
获得当前时刻的太阳方位角以及所述电子设备上设置的镜头的光轴方 向角, 其中, 所述太阳方位角与所述光轴方向角具有相同的基准方向; 基 于所述太阳方位角和所述光轴方向角, 获得当前拍摄角度; 基于所述当前 拍摄角度确定待调整角度, 并提示用户基于所述待调整角度进行调整。
上述方案中, 所述获得当前时刻的太阳方位角, 包括: 获得所述电子 设备当前所处的位置的纬度、 当前时刻的太阳赤纬以及当前时刻的太阳高 度角; 基于所述纬度、 所述太阳赤纬以及所述太阳高度角, 获得所述太阳 方位角。
上述方案中, 所述获得所述电子设备上设置的镜头的光轴方向角, 包 括: 获得所述镜头的朝向方向; 将所述朝向方向与所述基准方向之间的夹 角确定为所述光轴方向角。
上述方案中, 所述基于所述当前拍摄角度确定待调整角度, 包括: 当 所述当前拍摄角度满足预设条件时, 确定对应的预设门限; 将所述当前拍 上述方案中, 在所述当所述当前拍摄角度满足预设条件时, 确定对应 的预设门限之前, 所述方法还包括: 确定拍摄对象的类型, 并根据所述类 型确定所述预设条件。
第二方面, 本发明实施例提供一种电子设备, 所述电子设备包括: 第一获得单元, 配置为获得当前时刻的太阳方位角以及所述电子设备 上设置的镜头的光轴方向角, 其中, 所述太阳方位角与所述光轴方向角具 有相同的基准方向;
第二获得单元, 配置为基于所述太阳方位角和所述光轴方向角, 获得 当前拍摄角度;
第一确定单元, 配置为基于所述当前拍摄角度确定待调整角度; 提示 单元, 配置为提示用户基于所述待调整角度进行调整。
上述方案中, 所述第一获得单元, 配置为获得所述电子设备当前所处 的位置的纬度、 当前时刻的太阳赤纬以及当前时刻的太阳高度角; 基于所 述纬度、 所述太阳赤纬以及所述太阳高度角, 获得所述太阳方位角。
上述方案中, 所述第一获得单元, 配置为获得所述镜头的朝向方向; 将所述朝向方向与所述基准方向之间的夹角确定为所述光轴方向角。
上述方案中, 所述第一确定单元, 配置为当所述当前拍摄角度满足预 设条件时, 确定对应的预设门限; 将所述当前拍摄角度与所述预设门限之 间的差值确定为所述待调整角度。
上述方案中, 所述电子设备, 还包括: 第二确定单元, 配置为在所述 第二获得单元当所述当前拍摄角度满足预设条件时, 确定对应的预设门限 之前, 确定拍摄对象的类型, 并根据所述类型确定所述预设条件。
第三方面, 本发明实施例提供一种计算机存储介质, 所述计算机存储 介质中存储有计算机可执行指令, 所述计算机可执行指令用于执行前述的 方法。
本发明实施例所提供的提示用户的方法、 电子设备和计算机存储介质 中, 所述方法包括: 首先获得当前时刻的太阳方位角以及电子设备上设置 的镜头的光轴方向角, 这里所说的太阳方位角与光轴方向角具有相同的基 准方向, 然后, 基于太阳方位角和光轴方向角, 获得当前拍摄角度, 也就 是太阳相对于拍摄对象的位置, 接下来, 基于当前拍摄角度确定待调整角 度, 并提示用户调整至待调整角度。 也就是说, 电子设备能够自动获取当 前拍摄角度, 并确定出待调整角度, 那么, 用户就只需要根据提示, 调整 到待调整角度, 就能够获得较佳的拍照效果, 而不需要一遍一遍的尝试, 如此, 有效地解决了现有技术中存在的拍照效率低的技术问题, 提高拍照 效率, 方便用户操作, 提供良好的用户体验。 附图说明
图 1为本发明实施例中的提示用户的方法的流程示意图;
图 2为本发明实施例中的太阳方位角的示意图;
图 3为本发明实施例中的光轴方向角的示意图;
图 4为本发明实施例中的当前拍摄角度的示意图;
图 5为本发明实施例中的逆光场景下提示用户的方法的流程示意图; 图 6为本发明实施例中的电子设备的结构示意图。 具体实施方式
下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进 行清楚、 完整地描述。
本发明实施例提供一种提示用户的方法, 应用于如智能手机、 平板电 脑、 单反相机、 数码相机、 多媒体播放器等电子设备中。 这些电子设备中 设置有用于拍照的图像釆集装置, 还设置有全球定位系统 (GPS, Global Positioning System )模块, 以及陀螺仪、 电子罗盘等装置。
图 1为本发明实施例中的提示用户的方法的流程示意图, 参考图 1所 示, 该方法包括:
S 101: 获得当前时刻的太阳方位角以及电子设备上设置的镜头的光轴 方向角, 其中, 太阳方位角与光轴方向角具有相同的基准方向;
具体来说, 第一步, 电子设备获得自身当前所处位置的纬度 Φ, 同时 获得当前的日期和时刻 t。
在实际应用中,电子设备可以通过 GPS模块获得当前所处位置的纬度, 通过时钟模块获得当前的日期和时刻, 当然, 也可以通过 GPS模块与卫星 的同步时间, 获得当前的日期和时刻, 本发明不做具体限定。 第二步, 电 子设备计算获得当前时刻的太阳赤纬以及太阳高度角;
在实际应用中, 电子设备可以先通过公式(1 )计算当前时刻 ί的时角 /7 = 0- 12) x l5。 (1 ) 其中, 时角 在正午时为 0。 ; 在上午, 也就是 0点至 12点之间为 负 在下午, 也就是 12点至 24点之间为正。
然后, 将时角 带入公式(2 ), 计算太阳赤纬 。
Figure imgf000007_0001
其中, 是当前日期在一年中的日数, 比如, 1月 1 日的日数 为 1, 12月 31 日的日数 W为 365。
接着, 将纬度 Φ、 时角 及太阳赤纬 带入公式(3 ), 计算出太阳高 度角 ; 其中, 这里所说的太阳高度角是指太阳光的入射方向与地平面之 间的夹角。
6S =arccos( cos zcos^cosO + sin δ sin Φ) ( 3 ) 第三步, 电子设备基于纬度、 太阳赤纬以及太阳高度角, 获得当前时 刻的太阳方位角;
具体来说, 电子设备通过以下公式(4 ), 计算太阳方位角 ; 其中, 太阳方位角是以拍摄对象的正北方向为起始方向, 以太阳光的入射方向为 终止方向, 按顺时针方向所测量的角度, 如图 2 所示, 此时, 基准方向就 是拍摄对象所处位置的正北方向。
Figure imgf000007_0002
在电子设备通过上述步骤获得太阳方位角的同时, 还通过如陀螺仪、 电子罗盘等装置获得图像釆集装置的镜头的朝向方向, 并将该朝向方向与 上述基准方向, 也就是拍摄对象所处位置的正北方向之间的夹角确定为光 轴方向角。
在实际应用中, 由于镜头始终朝向拍摄对象, 所以, 光轴方向角就是 由镜头指向拍摄对象的向量与基准方向之间的顺时针夹角。 在本实施例中 将光轴方向角记为 , 如图 3所示。
S102: 基于太阳方位角和光轴方向角, 获得当前拍摄角度;
具体来说, 由于太阳方位角与光轴方向角具有相同的基准方向, 那么, 太阳方位角与光轴方向角的差值就是当前拍摄角度, 也就是太阳光入射方 向与拍摄对象背面之间的夹角。
例如, 如图 4所示, 太阳方位角 = 90°, 光轴方向角^ =270°, 当前 拍摄角度 =| | =180。。
S103 : 基于当前拍摄角度确定待调整角度, 并提示用户基于待调整角 度进行调整。
具体来说, 电子设备在确定当前拍摄角度满足预设条件时, 根据当前 拍摄角度, 确定相应的角度预设门限, 然后, 将当前拍摄角度与预设门限 之间的差值确定为待调整角度, 最后, 电子设备提示用户按照待调整角度 进行调整。
在本实施例中, 定义三个拍摄角度范围: 将 [0。 , 20。 ]以及 [340。 , 360° )定义为逆光角度范围; 将 [160° , 200° ] 定义为顺光角度范围; 将 (20。 , 160。 )以及 (200。 , 340。 )定义为柔光角度范围。
那么, 上述预设条件就可以为当前拍摄角度处于逆光角度范围内、 当 前拍摄角度处于顺光角度范围内或当前拍摄角度处于柔光角度范围内中的 一种或多种, 当然也可以为其他条件, 本发明不做具体限定。
例如, 当前拍摄角度 A =|A-A| =180°, 电子设备确定当前拍摄角度处 于顺光角度范围内, 满足预设条件, 接下来, 电子设备确定与顺光角度范 围对应的角度预设门限, 也就是顺光角度范围的两个边界值, 即 160° 和 调整角度, 均为 20° , 最后, 电子设备生成一个角度调整显示界面, 提示 用户需要将拍摄对象向左或者右移动 20° , 或者自行向左或右移动 20° , 调整后拍摄角度处于柔光角度范围内, 此时拍摄出的照片具有较理想的效 果。
在另一实施例中, 由于用户的拍摄对象可能是人, 也可能是物, 所以, 为了区别不同类型的拍摄对象, 在步骤当当前拍摄角度满足预设条件时, 确定对应的预设门限之前, 方法还包括: 确定拍摄对象的类型, 并根据所 述类型确定预设条件。 也就是说, 电子设备在确定对应的预设门限之前, 需要根据拍摄对象的类型确定对应的预设条件。
在具体实施过程中, 电子设备通过图像釆集装置获得一张当前拍摄角 度的緩存图像, 并对该图像进行如人脸识别, 物体识别等处理, 来确定拍 摄对象的类型。 例如, 电子设备在对緩存图像进行人脸识别后, 识别出有 至少一个人脸, 那么, 确定拍摄对象为人; 或者, 电子设备在对緩存图像 进行人脸识别后, 识别出拍摄对象中没有人, 较佳地, 电子设备判断对上 述步骤获得的太阳高度角 的值是否接近 0° , 若是, 电子设备确定拍摄对 象为日出或者日落时的太阳。 当然, 还有其他的确定拍摄对象的类型的方 式, 本发明不做具体限定。
那么, 针对拍摄对象的类型为人时, 对应的预设条件可以为: 当前拍 摄角度处于逆光角度范围内, 或者当前拍摄角度处于顺光角度范围内; 而 针对拍摄对象的类型为日出或者日落的太阳时, 对应的预设条件可以为: 当前拍摄角度处于顺光角度范围或者柔光角度范围内。
当然, 对于不同类型拍摄对象, 对应的预设条件还可以有其他条件, 以实际应用为准, 本发明不做具体限定。
那么, 在确定了预设条件之后, 电子设备在确定当前拍摄角度满足该 预设条件之后, 根据当前拍摄角度, 确定相应的角度预设门限, 然后, 将 当前拍摄角度与预设门限之间的差值确定为待调整角度, 最后, 电子设备 提示用户基于待调整角度进行调整。
下面以具体实例来对上述一个或者多个实施例中所述的提示用户的方 法进行说明,
殳设, 当前时刻为 2014年夏至 6月 21 日上午 11点, 用户在上海进行 拍照, 拍摄对象为人, 拍摄场景为逆光场景。
图 5 为本发明实施例中的逆光场景下提示用户的方法的流程示意图, 参考图 5所示, 该方法包括:
S501: 通过电子设备上设置的 GPS 模块得到上海的纬度 Φ, 即 Φ =31.22° ;
S502: 由公式( 1 )计算得到时角 /?, 即 /2=(11-12)χ15。 =-15。 ; S503: 由公式 (2)计算得到太阳赤纬 , 即 =23.45。;
S504: 由公式(3)计算得到太阳高度角 , 即 =74.6°;
S505: 由公式(4)计算得到太阳方位角^, 即 =116.6。;
S506: 由电子罗盘获得电子设备的光轴方向角 4, 即 =126.6°;
S507: 将^和 A之间做差并取绝对值得到当前拍摄角度, 即 Δ^ = 10°; S508: 对拍摄对象进行人脸识别, 确定当前的拍摄对象类型为人; S509:确定 处于逆光角度范围内,并确定对应的预设门限,即 340。 和 20。 ;
S510: 将 与预设门限分别做差, 得到待调整角度 , 即 Δ =10°, 以及 Δ =-330°;
S511: 生成提示界面, 提示用户将拍摄对象向左或向右移动 A ; 也 就是提示用户向左移动 10。 或者向右移动 40。 。 较佳地, 在该提示界面上还是实时显示当前拍摄角度, 来提示用户剩 余需要旋转的度数。
由上述可知, 电子设备能够自动获取当前拍摄角度, 并确定出待调整 角度, 那么, 用户就只需要根据提示, 调整到待调整角度, 就能够获得较 佳的拍照效果, 而不需要一遍一遍的尝试, 如此, 有效地解决了现有技术 中存在的拍照效率低的技术问题, 提高拍照效率, 方便用户操作, 提供良 好的用户体验。
本发明实施例还提供了一种计算机存储介质, 所述计算机存储介质中 存储有计算机可执行指令, 所述计算机可执行指令用于执行前述的提示用 户的方法。
基于同一发明构思, 本发明实施例提供一种电子设备, 该电子设备与 上述一个或者多个实施例中的电子设备一致。
图 6为本发明实施例中的电子设备的结构示意图, 参考图 6所示, 该 电子设备包括: 第一获得单元 61, 配置为获得当前时刻的太阳方位角以及 电子设备上设置的镜头的光轴方向角, 其中, 太阳方位角与光轴方向角具 有相同的基准方向; 第二获得单元 62, 配置为基于太阳方位角和光轴方向 角, 获得当前拍摄角度; 第一确定单元 63, 配置为基于当前拍摄角度确定 待调整角度; 提示单元 64, 配置为提示用户基于待调整角度进行调整。
较佳地, 第一获得单元 61, 配置为获得电子设备当前所处的位置的纬 度、 当前时刻的太阳赤纬以及当前时刻的太阳高度角; 基于纬度、 当前时 刻的太阳赤纬以及当前时刻的太阳高度角, 获得太阳方位角。
较佳地, 第一获得单元 61, 配置为获得镜头的朝向方向; 将朝向方向 与基准方向之间的夹角确定为光轴方向角。
较佳地, 第一确定单元 63, 配置为确定与当前拍摄角度对应的预设门 限; 将当前拍摄角度与预设门限之间的差值确定为待调整角度。 较佳地, 电子设备还包括: 第二确定单元, 配置为在第二获得单元 62 确定当前拍摄角度满足预设条件时, 确定对应的预设门限之前, 确定拍摄 对象的类型, 并根据该拍摄对象的类型确定预设条件。
在实际应用中, 所述的第一获得单元 61、 第二获得单元 62、 第一确定 单元 63、提示单元 64及第二确定单元均可以由电子设备中的如中央处理单 元 CPU、高级精简指令集机器 ARM、数字信号处理 DSP、或微处理器 MPU、 或现场可编程门阵列 FPGA等来实现, 本发明不做具体限定。
本领域内的技术人员应明白, 本发明的实施例可提供为方法、 系统、 或计算机程序产品。 因此, 本发明可釆用硬件实施例、 软件实施例、 或结 合软件和硬件方面的实施例的形式。 而且, 本发明可釆用在一个或多个其 中包含有计算机可用程序代码的计算机可用存储介质 (包括但不限于磁盘 存储器和光学存储器等 )上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、 设备(系统)、 和计算机程序 产品的流程图和 /或方框图来描述的。 应理解可由计算机程序指令实现流程 图和 /或方框图中的每一流程和 /或方框、以及流程图和 /或方框图中的流程和 /或方框的结合。 可提供这些计算机程序指令到通用计算机、 专用计算机、 嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器, 使得 在流程图一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功 能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理 设备以特定方式工作的计算机可读存储器中, 使得存储在该计算机可读存 储器中的指令产生包括指令装置的制造品, 该指令装置实现在流程图一个 流程或多个流程和 /或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备 上, 使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机 实现的处理, 从而在计算机或其他可编程设备上执行的指令提供用于实现 在流程图一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功 能的步骤。
以上所述, 仅为本发明的较佳实施例而已, 并非用于限定本发明的保 护范围。 工业实用性
本发明实施例所提供的提示用户的方法、 电子设备和计算机存储介质 中, 所述方法包括: 获得当前时刻的太阳方位角以及电子设备上设置的镜 头的光轴方向角, 该太阳方位角与光轴方向角具有相同的基准方向, 基于 太阳方位角和光轴方向角, 获得当前拍摄角度, 基于当前拍摄角度确定待 调整角度, 并提示用户调整至待调整角度。 也就是说, 用户就只需要根据 提示, 调整到待调整角度, 就能够获得较佳的拍照效果, 而不需要一遍一 遍的尝试, 如此, 有效地解决了现有技术中存在的拍照效率低的技术问题, 提高拍照效率, 方便用户操作, 提供良好的用户体验。

Claims

权利要求书
1、 一种提示用户的方法, 应用于电子设备, 所述方法包括: 获得当前时刻的太阳方位角以及所述电子设备上设置的镜头的光轴方 向角, 其中, 所述太阳方位角与所述光轴方向角具有相同的基准方向; 基于所述太阳方位角和所述光轴方向角, 获得当前拍摄角度; 基于所述当前拍摄角度确定待调整角度, 并提示用户基于所述待调整 角度进行调整。
2、 根据权利要求 1所述的方法, 其中, 所述获得当前时刻的太阳方位 角, 包括:
获得所述电子设备当前所处的位置的纬度、 当前时刻的太阳赤纬以及 当前时刻的太阳高度角;
基于所述纬度、 所述太阳赤纬以及所述太阳高度角, 获得所述太阳方 位角。
3、 根据权利要求 1所述的方法, 其中, 所述获得所述电子设备上设置 的镜头的光轴方向角, 包括:
获得所述镜头的朝向方向;
将所述朝向方向与所述基准方向之间的夹角确定为所述光轴方向角。
4、 根据权利要求 1至 3任一项所述的方法, 其中, 所述基于所述当前 拍摄角度确定待调整角度, 包括:
当所述当前拍摄角度满足预设条件时, 确定对应的预设门限; 度。
5、 根据权利要求 4所述的方法, 其中, 在所述当所述当前拍摄角度满 足预设条件时, 确定对应的预设门限之前, 所述方法还包括: 确定拍摄对象的类型, 并根据所述类型确定所述预设条件。
6、 一种电子设备, 所述电子设备包括:
第一获得单元, 配置为获得当前时刻的太阳方位角以及所述电子设备 上设置的镜头的光轴方向角, 其中, 所述太阳方位角与所述光轴方向角具 有相同的基准方向;
第二获得单元, 配置为基于所述太阳方位角和所述光轴方向角, 获得 当前拍摄角度;
第一确定单元, 配置为基于所述当前拍摄角度确定待调整角度; 提示单元, 配置为提示用户基于所述待调整角度进行调整。
7、 根据权利要求 6所述的电子设备, 其中,
所述第一获得单元, 配置为获得所述电子设备当前所处的位置的纬度、 当前时刻的太阳赤纬以及当前时刻的太阳高度角; 基于所述纬度、 所述太 阳赤纬以及所述太阳高度角, 获得所述太阳方位角。
8、 根据权利要求 6所述的电子设备, 其中,
所述第一获得单元, 配置为获得所述镜头的朝向方向; 将所述朝向方 向与所述基准方向之间的夹角确定为所述光轴方向角。
9、 根据权利要求 6至 8任一项所述的电子设备, 其中,
所述第一确定单元, 配置为当所述当前拍摄角度满足预设条件时, 确 定对应的预设门限; 将所述当前拍摄角度与所述预设门限之间的差值确定 为所述待调整角度。
10、 根据权利要求 9所述的电子设备, 其中, 所述电子设备还包括: 第二确定单元, 配置为在所述第二获得单元确定当所述当前拍摄角度满足 预设条件时, 确定对应的预设门限之前, 确定拍摄对象的类型, 并根据所 述类型确定所述预设条件。
11、 一种计算机存储介质, 所述计算机存储介质中存储有计算机可执 行指令, 所述计算机可执行指令用于执行权利要求 1至 5任一项所述的方 法。
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