WO2022217728A1 - 一种智能终端获取图像的方法及智能终端拍摄系统 - Google Patents

一种智能终端获取图像的方法及智能终端拍摄系统 Download PDF

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Publication number
WO2022217728A1
WO2022217728A1 PCT/CN2021/098780 CN2021098780W WO2022217728A1 WO 2022217728 A1 WO2022217728 A1 WO 2022217728A1 CN 2021098780 W CN2021098780 W CN 2021098780W WO 2022217728 A1 WO2022217728 A1 WO 2022217728A1
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Prior art keywords
image
intelligent terminal
camera
lens
telephoto
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PCT/CN2021/098780
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English (en)
French (fr)
Inventor
孙成龙
尚春莉
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广东小天才科技有限公司
广东艾檬电子科技有限公司
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Publication of WO2022217728A1 publication Critical patent/WO2022217728A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/21—Combinations with auxiliary equipment, e.g. with clocks or memoranda pads
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/667—Camera operation mode switching, e.g. between still and video, sport and normal or high- and low-resolution modes

Definitions

  • the present application relates to the technical field of intelligent terminals, and in particular, to a method for acquiring images by an intelligent terminal and a photographing system for an intelligent terminal.
  • Smart terminals in related technologies such as mobile phones, tablet computers, or smart wearable devices, are generally integrated with camera modules to meet basic shooting requirements.
  • Some smart terminals integrate telephoto lenses, but these telephoto lenses have limited magnification and cannot meet the needs of shooting farther objects.
  • Some smart terminals shoot distant images by installing telescopes. Compared with shooting with telephoto lenses, they can achieve greater magnification and are more suitable for shooting and observing the details of distant objects.
  • Galilean telescopes or Kepler telescopes can be used for smart terminals.
  • the objective lens of the Galileo telescope is a convex lens
  • the eyepiece is a concave lens, which can form a positive image
  • the length of the lens barrel is short, but the observed field of view will be relatively small, which has certain limitations on the imaging effect.
  • both the eyepiece and the objective lens are convex lenses, the field of view is wider, and the magnification is easily larger, but its inverted image generally needs to be added to the telescope.
  • an erect image system is added inside the telescope, the length of the lens barrel will be longer, and the weight of the telescope will be increased, resulting in inconvenient use and installation of the telescope.
  • the requirements for the optical parameters of the erection system will be relatively high, resulting in increased costs.
  • One of the purposes of the embodiments of the present application is to provide a method for acquiring images by an intelligent terminal, which can acquire images of objects farther away through an external telescopic head, and the telescopic head has a larger field of view, higher magnification, and lower cost,
  • the output telephoto image is a positive image.
  • the second purpose of the embodiments of the present application is to provide another method for acquiring images by an intelligent terminal, which can output both ordinary images and telephoto images, so as to ensure that the camera can be used normally.
  • the third purpose of the embodiments of the present application is to provide an intelligent terminal photographing system, which can obtain images of objects farther away through an external telescopic head, and the telescopic head has a larger field of view and higher magnification, lower cost, and higher output. Telephoto images are positive images.
  • a method for acquiring an image by an intelligent terminal comprising:
  • the telescopic head is installed on the intelligent terminal, so that an optical path channel is formed between the camera of the intelligent terminal, the eyepiece of the telescopic head, and the objective lens of the telescopic head; the eyepiece and the objective lens are both convex lenses;
  • the second image is output.
  • a method for acquiring an image by an intelligent terminal comprising:
  • the ordinary image output step includes: outputting the first image
  • the step of outputting the telephoto image includes: rotating the first image by 180 degrees to obtain a second image; and outputting the second image.
  • An intelligent terminal shooting system comprising an intelligent terminal and a telescopic head
  • the intelligent terminal includes a camera and an image processing unit electrically connected to the camera;
  • the telescopic head includes an eyepiece and an objective lens arranged at intervals, and both the eyepiece and the objective lens are convex lenses; the telescopic head is provided with a mounting portion, and the telescopic head is detachably mounted on the smart terminal through the mounting portion , so that an optical path is formed between the camera head, the eyepiece, and the objective lens;
  • the image processing unit is configured to rotate the first image captured by the camera by 180 degrees to obtain a second image.
  • a method for acquiring an image by an intelligent terminal and the intelligent terminal photographing system the image can be erected through the image processing unit of the intelligent terminal, the telescopic lens has a high magnification, a large field of view, and no erection system needs to be set, which can achieve both Telephoto photography, while miniaturizing the telephoto lens and reducing the cost;
  • Another method for acquiring images by an intelligent terminal is to determine the shooting mode before outputting the image, and it can output a normal image or a telephoto image to ensure that the camera of the intelligent terminal can be used normally without a telephoto lens.
  • FIG. 1 is a schematic diagram of a method for acquiring an image by an intelligent terminal according to an embodiment of the present application
  • FIG. 2 is a schematic diagram of a method for acquiring an image by an intelligent terminal according to another embodiment of the present application
  • FIG. 3 is a schematic diagram of the working principle of the telescopic head according to the embodiment of the application.
  • FIG. 4 is a schematic diagram of a first image output by an intelligent terminal according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of the rotation axis of the first image according to an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a second image output by the smart terminal according to an embodiment of the present application.
  • connection and “fixed” should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection or an integral body; it may be a mechanical connection , it can also be an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of the two elements or the interaction relationship between the two elements.
  • connection and “fixed” should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection or an integral body; it may be a mechanical connection , it can also be an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of the two elements or the interaction relationship between the two elements.
  • a first feature "on” or “under” a second feature may include direct contact between the first and second features, or may include the first and second features Not directly but through additional features between them.
  • the first feature being “above”, “over” and “above” the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level above the second feature.
  • the first feature is “below”, “below” and “below” the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.
  • the present application proposes a method for acquiring an image by an intelligent terminal.
  • a forward telephoto image can be captured and output, and the magnification of the Kepler-type telescopic head can be preserved. It has the advantages of higher height and larger viewing angle; and, through the software of the smart terminal, the inverted image can be turned into an upright image, and there is no need to set up an erect image system in the telescopic head. In this way, the telescopic head can be miniaturized and the cost can be reduced.
  • the method for acquiring an image by an intelligent terminal includes:
  • Installation steps first install the external telescopic head on the smart terminal.
  • the eyepiece of the telescopic head and the camera of the smart terminal are aligned.
  • the camera of the smart terminal, the eyepiece of the telescopic head, and the telescopic head An optical path is formed between the objective lenses, so that the camera can collect images of distant objects through an external telescopic lens; among them, the telescopic lens used is a Kepler-type telescopic lens without a built-in erection system, and the eyepiece of the telescopic lens is used. and the objective lens are convex lenses;
  • the first image is processed by the image processing unit, and the first image is rotated by 180 degrees to obtain a second image, and the second image is an upright image; Compared with the actual image, the up and down directions are the same, and the left and right directions are the same (as shown in Figure 6);
  • Outputting step outputting the second image; according to different preset programs of the intelligent terminal, the second image can be output to the memory, or the display screen, or other unit modules.
  • the telephoto image is an enlarged image of a distant scene.
  • an axis perpendicular to the image or a plane parallel to the image is used as the rotation axis, and the first image is rotated around the rotation axis.
  • O1-O7 are axes perpendicular to the image or perpendicular to the plane parallel to the image.
  • the first image is processed by software, and the first image is rotated around any rotation axis of O1-O7 to obtain a positive image.
  • This application does not limit the rotation axis, nor does it limit the rotation direction of the first image (clockwise or counterclockwise); in other embodiments, the first image can also be rotated clockwise or counterclockwise around other rotation axes, as long as It is possible to convert an inverted image to a positive image.
  • a Kepler-type telescopic head is connected to the intelligent terminal, and through the telescopic head magnifying the distant scene, the camera of the intelligent terminal can collect the image of the distant scene through the telescopic head (this image is the first image of the distant scene).
  • the eyepiece and objective lens of the Kepler-type telescopic head are both convex lenses.
  • the Kepler-style telescopic head has a larger field of view and a larger magnification; at the same time, through the The software in the smart terminal rotates the image collected by the camera, and can obtain and output an upright image (this image is the second image), so that there is no need to set up an upright system in the telescopic head, and a positive view can also be output.
  • Telephoto images can not only reduce cost and weight, and be easy to carry and use, but also can shoot and output higher-quality telephoto images on smart terminals.
  • the present application also proposes another method for acquiring images by an intelligent terminal, which realizes telephoto photography through the cooperation of an external telescopic lens with the software inside the intelligent terminal; and, when the telescopic lens is not added, the camera of the terminal device can also Normal use, to achieve normal photography.
  • the method for acquiring an image by the intelligent terminal includes:
  • Shooting step start the camera of the smart terminal to obtain the first image
  • Judging step judging the shooting mode; when judging that the shooting mode is the ordinary shooting mode, then executing the ordinary image output step; when judging that the shooting mode is the telephoto shooting mode, then executing the telephoto image outputting step; wherein,
  • the ordinary image output steps are: outputting the first image
  • the telephoto image output step includes: an image processing step and an output step; the image processing step includes: rotating the first image by 180 degrees to obtain a second image; the output step: outputting the second image.
  • the installation step can be selectively performed or not performed, and the installation steps are:
  • the eyepiece of the telescopic head should be aligned with the camera of the smart terminal. An optical path is formed between them, so that the camera can collect images of distant objects through an external telescopic lens; among them, the telescopic lens used is a Kepler-type telescopic lens without a built-in erector system, and the eyepiece and objective lens of the telescopic lens are both is a convex lens;
  • the photographing mode is the telephoto photographing mode.
  • the judgment step is implemented in the following manner:
  • the shooting mode is judged to be the normal shooting mode
  • the recognition result is yes, that is, the recognition result is that a telephoto lens has been installed, it is determined that the shooting mode is the telephoto shooting mode.
  • the intelligent terminal can identify whether to install a telescopic lens through detection components (hardware), and can also identify whether to install a telescopic lens through software analysis. In this embodiment, whether the telephoto lens is installed is automatically identified by the intelligent terminal, and unnecessary operations by the user are not required.
  • the intelligent terminal When the intelligent terminal is shooting, it can intelligently enter the normal shooting mode or the telephoto shooting mode, which is more convenient for the user to use and has a better experience.
  • At least one of the following methods can be used to actively identify whether a telephoto lens is installed on the smart terminal:
  • Embodiment 1 Identify vignetting features through software.
  • the identification result is that a telephoto lens has been installed.
  • the method for identifying the telescopic head in this embodiment can be used, which can be used.
  • the principle of camera imaging is as follows: the optical image is projected on the image sensor, the image sensor converts the optical image into an electrical signal, and through the AD converter, the viewpoint signal on each pixel is converted into a digital signal, and the processing chip converts the digital signal. Processed into a digital image (ie, the first image).
  • the image sensor can sense the vignetting feature, and the first image also reflects the vignetting feature; the vignetting feature of the image sensor or the first image can be identified.
  • the shooting mode is the telephoto shooting mode.
  • the corner area of the first image when judging whether there is vignetting in the corner area of the first image, it can be judged by the symmetry of the radial gradient distribution of the first image; or by extracting the brightness information of the corner area of the first image and the brightness of multiple central areas information for analysis and judgment.
  • Embodiment 2 Recognition through sensors.
  • a position sensor is installed on the smart terminal.
  • the position sensor senses that the telescopic head is installed at the designated position on the terminal device, the position sensor sends a signal in place, and the recognition result is that the telescopic head has been installed.
  • a Hall sensor can be used to identify the telescopic head, a Hall sensor is set on the smart terminal, a magnetic column is set on the telescopic head, and the Hall element of the Hall sensor conducts current. In the direction of the current and the magnetic field, a potential difference will be generated. The potential difference is called the Hall output voltage. The Hall output voltage is detected and compared with the preset voltage value. When the Hall output voltage exceeds the threshold, the identification result is Telescope installed.
  • position sensors can be classified as contact sensors or other proximity sensors, such as photoelectric sensors and the like.
  • Embodiment 3 Identify by means of NFC communication.
  • NFC identification module NFC main module
  • NFC target module NFC slave module
  • Embodiment 4 Identify the password information on the telephoto lens through software.
  • an infrared code is set on the telescopic head.
  • the external light passes through the infrared code, only infrared light can pass through to enter the camera. If the image collected by the camera is at the position corresponding to the infrared code, If infrared information is included, the recognition result is that the telephoto lens is installed.
  • the secret code is set at the corner of the telephoto lens, and before outputting the second image to the screen, the corner containing the infrared information on the second image may be cropped by software.
  • the camera lens of the camera is double-pass, which can pass visible light or infrared light, and can realize double-pass through coating.
  • the present application also proposes an intelligent terminal photographing system, which can acquire images of objects farther away through an external telescopic head, and the telescopic head has a larger field of view, higher magnification, and lower cost.
  • the intelligent terminal photographing system includes: an intelligent terminal and a telescopic lens
  • the intelligent terminal includes a camera and an image processing unit electrically connected to the camera;
  • the telescopic head includes an eyepiece and an objective lens arranged at intervals, and both the eyepiece and the objective lens are convex lenses; the telescopic head is provided with an installation part, and the telescopic head is detachably installed on the intelligent terminal through the installation part, so that an optical path is formed between the camera head, the eyepiece and the objective lens;
  • the image processing unit is used for rotating the first image collected by the camera by 180 degrees to obtain the second image.
  • the smart terminal can be, but is not limited to, a mobile phone, a tablet computer, a smart wearable device, and the like.
  • the telescopic head can be detachably installed on the smart terminal by means of magnetic attraction, snap connection, etc., or can be detachably installed on the smart terminal by means of a protective cover, a clip, a bracket, etc., this embodiment does not install the telescopic head. way to limit.
  • the magnification of the telescopic head can be set to be 8 times to 20 times.
  • the smart terminal further includes a register electrically connected to the image processing unit, the register provides configuration information for the image processing unit, and the configuration information includes the image rotation angle; the image processing unit Process the image according to the read configuration information.
  • the configuration information of the normal shooting mode and the configuration information of the telephoto shooting mode are configured in the register; the configuration information of the telephoto shooting mode includes the image rotation angle.
  • a detection element is provided on the terminal device, and the detection element is used to detect the telescopic head of the smart terminal; the detection element is a position sensor or an NFC identification module.
  • a password is set on the telescopic head
  • the intelligent terminal includes an image analysis unit electrically connected to the image sensor of the camera, and the image analysis unit is used to analyze whether the image collected on the image sensor contains password information.
  • the secret code on the telescopic head is an infrared secret code
  • the infrared secret code is used to filter infrared light.
  • the infrared code is invisible to the naked eye and does not affect the appearance of the telescopic lens.
  • optical secret codes may also be set on the telescopic head.
  • the smart terminal includes an image analysis unit that is electrically connected to an image sensor of the camera, and the image analysis unit is configured to analyze whether there is vignetting information on the image collected by the camera.

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Abstract

本申请提供一种智能终端获取图像的方法及智能终端拍摄系统。一种智能终端获取图像的方法包括：安装望远镜头；摄像头拍摄第一图像；将第一图像旋转180度得到第二图像。另一种智能终端获取图像的方法包括：摄像头拍摄第一图像；判断拍摄模式；当拍摄模式为普通拍摄模式时，输出第一图像；当拍摄模式为望远拍摄模式时，将第一图像旋转180度得到第二图像。该智能终端拍摄系统包括智能终端以及望远镜头，智能终端包括图像处理单元。该智能终端获取图像的方法以及该智能终端拍摄系统，望远镜头倍率高、视野大且无需设置正像系统，使望远镜头小型化且降低成本。另一种智能终端获取图像的方法，可保证在未安装望远镜头时摄像头正常使用。

Description

一种智能终端获取图像的方法及智能终端拍摄系统 技术领域
本申请涉及智能终端技术领域，尤其涉及一种智能终端获取图像的方法及智能终端拍摄系统。
背景技术
相关技术中的智能终端，例如手机、平板电脑、或智能穿戴设备等，一般都集成有摄像头模组，以满足基本的拍摄需求。但是，人们在日常生活中，有拍摄观察远处物体的需求，一些智能终端内集成了长焦镜头，但是这些长焦镜头的放大倍率有限，无法满足对更远处的物体拍摄的需求。
一些智能终端通过安装望远镜拍摄远处图像，相比于采用长焦镜头拍摄，可以达到更大的放大倍率，更适合拍摄观察远处物体的细节。对于智能终端而言，可以采用伽利略望式望远镜或开普勒式望远镜。
其中，伽利略式望远镜的物镜是凸透镜，目镜是凹透镜，其可以成正像，镜筒长度短，但其所观察的视野会比较小，对成像效果有一定限制。而开普勒式望远镜，目镜和物镜都是凸透镜，视野更宽，放大倍数也容易更大，但其成倒像，一般需要在望远镜的内部增加正像系统(如棱镜正像系统或透镜正像系统)，以将倒立的像变为正立的像；但是，若在望远镜内部增加正像系统，会导致镜筒的长度较长，还会增加望远镜重量，导致使用不方便、望远镜安装不稳；同时，为了保证成像效果，对正像系统的光学参数的要求会比较高，导致成本增加。
发明内容
本申请实施例的目的之一在于：提供一种智能终端获取图像的方法，其可通过外接望远镜头获取更远处的物体的图像，且望远镜头具有更大视野更高倍率，成本更低，输出的望远图像为正像。
本申请实施例的目的之二在于：提供另一种智能终端获取图像的方法，其既可输出普通图像，也可以输出望远图像，保证摄像头能够正常使用。
本申请实施例的目的之三在于：提供一种智能终端拍摄系统，其可通过外接望远镜头获取更远处的物体的图像，且望远镜头具有更大视野更高倍率，成本更低，输出的望远图像为正像。
为达上述目的之一，本申请采用以下技术方案：
一种智能终端获取图像的方法，包括：
将望远镜头安装于智能终端，使所述智能终端的摄像头、所述望远镜头的目镜、所述望远镜头的物镜之间形成光路通道；所述目镜与所述物镜均为凸透镜；
启动智能终端的摄像头，所述摄像头拍摄第一图像；
处理所述第一图像，将所述第一图像旋转180度，得到第二图像；
输出所述第二图像。
为达上述目的之二，本申请采用以下技术方案：
一种智能终端获取图像的方法，包括：
启动智能终端的摄像头，获取第一图像；
判断拍摄模式；当拍摄模式为普通拍摄模式时，则执行普通图像输出步骤；当拍摄模式为望远拍摄模式时，则执行望远图像输出步骤；
所述普通图像输出步骤包括：输出所述第一图像；
所述望远图像输出步骤包括：将所述第一图像旋转180度，得到第二图像；输出所述第二图像。
为达上述目的之三，本申请采用以下技术方案：
一种智能终端拍摄系统，包括智能终端及望远镜头；
所述智能终端包括摄像头以及与所述摄像头电性连接的图像处理单元；
所述望远镜头包括间隔设置的目镜与物镜，所述目镜和所述物镜均为凸透镜；所述望远镜头设有安装部，所述望远镜头通过所述安装部可拆地安装于所述智能终端，以使所述摄像头、所述目镜、所述物镜之间形成光路通道；
所述图像处理单元用于对所述摄像头采集的第一图像旋转180度以得到第二图像。
本申请的有益效果为：智能终端获取图像的方法以及该智能终端拍摄系统，通过智能终端的图像处理单元实现图像的正立，望远镜头倍率高、视野大且无需设置正像系统，既可以实现望远拍照，同时可使望远镜头小型化且降低成本；
另一种智能终端获取图像的方法，在输出图像前判断拍摄模式，其可输出普通图像或望远图像，保证在不加望远镜头时，智能终端的摄像头能够正常使用。
附图说明
下面根据附图和实施例对本申请作进一步详细说明。
图1为本申请其一实施例所述智能终端获取图像的方法的示意图；
图2本申请另一实施例所述智能终端获取图像的方法的示意图；
图3为本申请实施例所述望远镜头的工作原理示意图；
图4为本申请其一实施例所述智能终端输出的第一图像示意图；
图5为本申请其一实施例所述第一图像的旋转轴线示意图；
图6为本申请其一实施例所述智能终端输出的第二图像示意图。
具体实施方式
为使本申请解决的技术问题、采用的技术方案和达到的技术效果更加清楚，下面将结合附图对本申请实施例的技术方案作进一步的详细描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域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，都属于本申请保护的范围。
在本申请的描述中，除非另有明确的规定和限定，术语“相连”、“固定”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅 仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
本申请提出一种智能终端获取图像的方法，通过智能终端与外置的开普勒式望远镜头的配合，可拍摄并输出正向的望远图像，保留了开普勒式望远镜头放大倍率可以更高，视角更大的优势；并且，通过智能终端的软件将倒立的像变为正立的像，无需在望远镜头内设正像系统，如此，望远镜头可以实现小型化并且降低了成本。
如图1-6所示，在本申请的智能终端获取图像的方法的一实施例中，智能终端获取图像的方法包括：
安装步骤：先将外部的望远镜头安装于智能终端上，安装望远镜头时，望远镜头的目镜与智能终端的摄像头对位，望远镜头安装到位后，智能终端的摄像头、望远镜头的目镜、望远镜头的物镜之间形成光路通道，以使摄像头能够通过外接的望远镜头采集到远处物体的图像；其中，采用的望远镜头为无内置正像系统的开普勒式望远镜头，该望远镜头的目镜和物镜均为凸透镜；
拍摄步骤：启动智能终端的摄像头，摄像头拍摄第一图像；由于采用无正像系统的开普勒式望远镜头，摄像头采集的第一图像为倒像；倒像即倒立的图像，倒像与人眼观测到的实际图像相比，上下方向相反，左右方向相反(如图4所示)；
处理步骤：通过图像处理单元对第一图像进行处理，将第一图像旋转180度，得到第二图像，第二图像为正像；正像即正立的图像，正像与人眼观测到的实际图像相比，上下方向一致，左右方向一致(如图6所示)；
输出步骤：输出第二图像；根据智能终端的预设程序的不同，第二图像可输出至存储器、或显示屏、或其他单元模块。
其中，望远图像即远处景物的放大图像。
在一实施例中，在将第一图像进行180度旋转时，以垂直于图像或垂直于与图像平行的平面的轴线为旋转轴线，第一图像绕旋转轴线旋转。
图5中，O1～O7为垂直穿过图像或垂直于与图像平行的平面的轴线，通过软件处理第一图像，使第一图像绕O1～O7中任一旋转轴线旋转以得到正像。本申请不对旋转轴线进行限制，也不对第一图像的旋转方向进行限制(顺时针或逆时针)；在其他实施例中，也可以让第一图像绕其他旋转轴线顺时针或逆时针旋转，只要能够将倒像转为正像即可。
本申请的智能终端获取图像的方法，在智能终端外接开普勒式望远镜头，通过望远镜头对远处景物的放大，智能终端的摄像头可以通过望远镜头采集远处景物的图像(该图像为第一图像)，开普勒式望远镜头的目镜和物镜均为凸透镜，其相对于伽利略式望远镜头而言，开普勒式望远镜头的视野更大，放大倍率可设置得更大；同时，通过智能终端内的软件，对摄像头采集到的图像进行旋转，可以得到并输出正立的图像(该图像为第二图像)，从而无需在望远镜头内设置正像系统，也可以输出正向的望远图像，既能够降低成本和重量，便于携带使用，也可以在智能终端上拍摄并输出更高质量的望远图像。
本申请还提出另一种智能终端获取图像的方法，其通过外接的望远镜头与智能终端内部的软件配合，实现望远拍照；并且，还可以在不加望远镜头时，终端设备的摄像头也可以正常使用，实现正常拍照。
如图1-6所示，在本申请的另一种智能终端获取图像的方法的一实施例中， 该智能终端获取图像的方法包括：
拍摄步骤：启动智能终端的摄像头，获取第一图像；
判断步骤：判断拍摄模式；当判断拍摄模式为普通拍摄模式时，则执行普通图像输出步骤；当判断拍摄模式为望远拍摄模式时，则执行望远图像输出步骤；其中，
普通图像输出步骤为：输出第一图像；
望远图像输出步骤包括：图像处理步骤以及输出步骤；图像处理步骤包括：将第一图像旋转180度，得到第二图像；输出步骤：输出第二图像。
其中，在拍摄步骤之前，可选择地执行或不执行安装步骤，安装步骤为：
先将外部的望远镜头安装于智能终端上，安装望远镜头时，望远镜头的目镜与智能终端的摄像头对位，望远镜头安装到位后，智能终端的摄像头、望远镜头的目镜、望远镜头的物镜之间形成光路通道，以使摄像头能够通过外接的望远镜头采集到远处物体的图像；其中，采用的望远镜头为无内置正像系统的开普勒式望远镜头，该望远镜头的目镜和物镜均为凸透镜；
若在拍摄步骤之前，执行了安装步骤，则在判断步骤中，判断拍摄模式为望远拍摄模式。
在本申请的智能终端获取图像的方法的又一实施例中，为了提升用户使用的便捷性，判断步骤通过如下方式实施：
通过识别智能终端上是否安装外置的望远镜头，从而判断拍摄模式；
若识别结果为否，即识别结果为未安装望远镜头，则判断拍摄模式为普通拍摄模式；
若识别结果为是，即识别结果为已安装望远镜头，则判断拍摄模式为望远 拍摄模式。
其中，智能终端可以通过检测元件(硬件)检测识别是否安装望远镜头，也可以通过软件分析识别是否安装望远镜头。本实施例中，通过智能终端自动识别是否安装望远镜头，无需用户进行多余操作，智能终端进行拍摄时，能够智能地进入普通拍摄模式或望远拍摄模式，用户使用更加方便，体验更佳。
本实施例中，至少可以通过如下任一方式主动识别智能终端上是否安装望远镜头：
实施方式一：通过软件识别暗角特征。
有时会由于技术匹配不良，在智能终端的摄像头上外接镜头时，会在摄像头的摄像镜头的边角处(1至4个边角处)，出现黑影遮挡的情况；或者当望远镜头的尺寸、当望远镜头的视野角度配置得略微小于摄像头的摄像镜头时，也会在拍摄时出现黑影遮挡的情况。
本实施方式中，通过识别暗角特征(即由于被遮挡产生的黑影特征)，当识别到暗角特征时，识别结果为已安装望远镜头。
本实施方式中，对于望远镜头与智能终端的存在适配缺陷的情况，采用本实施方式的识别望远镜头的方法，可以变废为用。
其中，摄像头拍摄成像的原理为：光学图像投到图像传感器上，图像传感器将光学图像转为电信号，通过AD转换器，将每个像素上的观点信号转成数码信号，处理芯片将数码信号处理成数码图像(即第一图像)。
当摄像镜头的边角区域被遮挡时，图像传感器可以感应到暗角特征，第一图像也体现暗角特征；可以通过识别图像传感器或第一图像的暗角特征。
本实施方式中，通过判断第一图像的边角区域是否存在暗角，若存在暗角， 则判断拍摄模式为望远拍摄模式。
其中，判断第一图像的边角区域是否存在暗角时，可以通过第一图像的径向梯度分布对称性来判断；或通过提取第一图像的边角区域亮度信息以及多个中部区域的亮度信息，进行分析判断。
实施方式二：通过传感器识别。
在智能终端上安装位置传感器，当位置传感器感应到望远镜头安装至终端设备上的指定位置时，位置传感器发出到位信号，识别结果为已安装望远镜头。
可以采用霍尔传感器识别望远镜头，在智能终端上设置霍尔传感器，在望远镜头上设置磁柱，霍尔传感器的霍尔元件通电流，当带磁场的磁柱接近霍尔元件时，在垂直于电流和磁场的方向，就会产生电位差，电位差称为霍尔输出电压，检测霍尔输出电压，并将其与预设电压值比较，当霍尔输出电压超过阈值时，识别结果为已安装望远镜头。
当然，位置传感器可以分为接触式传感器或其他接近式传感器，例如光电式传感器等等。
实施方式三：通过NFC通信的方式识别。
在智能终端设置NFC识别模块(NFC主模块)，在望远镜头设置NFC目标模块(NFC从模块)，当望远镜头安装到位时，NFC目标模块接近NFC识别模块，智能终端识别到望远镜头，识别结果为已安装望远镜头。
实施方式四：通过软件识别望远镜头上的暗码信息。
在望远镜头上设置暗码信息，如此，当外部光线穿过望远镜头射入摄像头时，会在摄像头的图像传感器上的光学图像上，或在摄像头的处理芯片输出的数码图像上，产生对应的暗码信息，判断摄像头采集的图像是否含有暗码信息， 若含有暗码信息，识别结果为已安装望远镜头。
本实施方式中，在望远镜头上设置红外暗码，外部光线穿过红外暗码处时，仅有红外光能够穿过，以射入摄像头内，若摄像头采集到的图像在与红外暗码对应的位置，包含红外信息，则识别结果为已安装望远镜头。
其中，可以通过摄像头的图像传感器的电信号判断时候包含红外暗码信息，也可以通过摄像头输出的数码图像(第一图像)判断是否包含红外暗码信息。
在一实施例中，将暗码设置在望远镜头的边角处，在将第二图像输出至屏幕之前，可以通过软件将第二图像上包含红外信息的边角处裁剪。
在一实施例中，摄像头的摄像镜头是双通的，其可以通过可见光，也可以通过红外光，可以通过镀膜实现双通。
本申请还提出一种智能终端拍摄系统，其可通过外接望远镜头获取更远处的物体的图像，且望远镜头具有更大视野更高倍率，成本更低。
如图1-5所示，在本申请的智能终端拍摄系统的一实施例中，该智能终端拍摄系统包括：智能终端以及望远镜头
智能终端包括摄像头以及与摄像头电性连接的图像处理单元；
望远镜头包括间隔设置的目镜与物镜，目镜和物镜均为凸透镜；望远镜头设有安装部，望远镜头通过安装部可拆地安装于智能终端，以使摄像头、目镜、物镜之间形成光路通道；
图像处理单元用于对摄像头采集的第一图像进行旋转，旋转180度，以得到第二图像。
其中，望远镜头的放大倍率由物镜焦距和目镜焦距确认，可根据实际需求调整放大倍率。智能终端可以为但不限于手机、平板电脑、智能穿戴设备等。
需要说明的是，望远镜头可以通过磁吸、卡接等方式实现可拆安装于智能终端，也可以通过保护套、夹子、支架等方式可拆安装于智能终端，本实施例不对望远镜头的安装方式进行限定。
在一实施例中，望远镜头的放大倍率可以设置为8倍～20倍。
在一实施例中，为了能够更加快速地实现图像的旋转处理，智能终端还包括与图像处理单元电性连接的寄存器，寄存器为图像处理单元提供配置信息，配置信息包括图像旋转角度；图像处理单元根据读取的配置信息处理图像。
在一实施例中，寄存器内配置了普通拍摄模式的配置信息，以及望远拍摄模式的配置信息；望远拍摄模式的配置信息包括图像旋转角度。
在一实施例中，终端设备上设有检测元件，检测元件用于检测智能终端的望远镜头；检测元件为位置传感器或NFC识别模块。
其中，检测元件的检测原理在上述实施例中已记载，此不赘述。
在一实施例中，望远镜头上设置暗码，智能终端包括与摄像头的图像传感器电连接的图像分析单元，图像分析单元用于分析图像传感器上采集到的图像是否含暗码信息。
在本实施例中，望远镜头上的暗码为红外暗码，红外暗码用于过滤红外光线。红外暗码肉眼不可见，不影响望远镜头外观。
在其他实施例中，望远镜头上还可以设置其他光学暗码。
在一实施例中，智能终端包括与摄像头的图像传感器电连接的图像分析单元，图像分析单元用于分析摄像头采集到的图像上是否有暗角信息。
于本文的描述中，需要理解的是，术语“上”、“下”、“左、”“右”等方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述和简化操作， 而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”，仅仅用于在描述上加以区分，并没有特殊的含义。
在本说明书的描述中，参考术语“一实施例”、“示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。
此外，应当理解，虽然本说明书按照实施方式加以描述，但并非每个实施方式仅包含一个独立的技术方案，说明书的这种叙述方式仅仅是为清楚起见，本领域技术人员应当将说明书作为一个整体，各实施例中的技术方案也可以适当组合，形成本领域技术人员可以理解的其他实施方式。
以上结合具体实施例描述了本申请的技术原理。这些描述只是为了解释本申请的原理，而不能以任何方式解释为对本申请保护范围的限制。基于此处的解释，本领域的技术人员不需要付出创造性的劳动即可联想到本申请的其它具体实施方式，这些方式都将落入本申请的保护范围之内。

Claims (10)

  1. 一种智能终端获取图像的方法，其中，包括：
    将望远镜头安装于智能终端，使所述智能终端的摄像头、所述望远镜头的目镜、所述望远镜头的物镜之间形成光路通道；所述目镜与所述物镜均为凸透镜；
    启动智能终端的摄像头，所述摄像头拍摄第一图像；
    处理所述第一图像，将所述第一图像旋转180度，得到第二图像；
    输出所述第二图像。
  2. 一种智能终端获取图像的方法，其中，包括：
    启动智能终端的摄像头，获取第一图像；
    判断拍摄模式；当拍摄模式为普通拍摄模式时，则执行普通图像输出步骤；当拍摄模式为望远拍摄模式时，则执行望远图像输出步骤；
    所述普通图像输出步骤包括：输出所述第一图像；
    所述望远图像输出步骤包括：将所述第一图像旋转180度，得到第二图像；输出所述第二图像。
  3. 根据权利要求2所述的智能终端获取图像的方法，其中，识别所述智能终端上是否安装望远镜头；
    若识别结果为否，则判断拍摄模式为所述普通拍摄模式，或提示望远镜头未装配好；若识别结果为是，则判断拍摄模式为所述望远拍摄模式。
  4. 根据权利要求3所述的智能终端获取图像的方法，其中，通过检测元件检测所述智能终端上是否安装望远镜头，或通过软件识别所述智能终端上是否安装望远镜头。
  5. 根据权利要求3所述的智能终端获取图像的方法，其中，所述识别 所述智能终端上是否安装望远镜头，包括：判断所述第一图像是否存在暗角；若存在暗角，则判断拍摄模式为所述望远拍摄模式。
  6. 根据权利要求3所述的智能终端获取图像的方法，其中，所述识别所述智能终端上是否安装外置的望远镜头，包括：判断所述摄像头采集到的图像是否含有暗码信息，若含有所述暗码信息，识别结果为已安装所述望远镜头。
  7. 一种智能终端拍摄系统，其中，包括智能终端及望远镜头；
    所述智能终端包括摄像头以及与所述摄像头电性连接的图像处理单元；
    所述望远镜头包括间隔设置的目镜与物镜，所述目镜和所述物镜均为凸透镜；所述望远镜头设有安装部，所述望远镜头通过所述安装部可拆地安装于所述智能终端，以使所述摄像头、所述目镜、所述物镜之间形成光路通道；
    所述图像处理单元用于对所述摄像头采集的第一图像旋转180度以得到第二图像。
  8. 根据权利要求7所述的智能终端拍摄系统，其中，所述智能终端还包括与所述图像处理单元电性连接的寄存器，所述寄存器为所述图像处理单元提供配置信息，所述配置信息包括图像旋转角度；所述图像处理单元根据读取的所述配置信息处理图像。
  9. 根据权利要求7所述的智能终端拍摄系统，其中，所述智能终端设有检测元件，所述检测元件用于检测所述智能终端的望远镜头；
    所述检测元件为位置传感器或NFC识别模块。
  10. 根据权利要求7所述的智能终端拍摄系统，其中，所述望远镜头上设置暗码，所述智能终端包括与所述摄像头的图像传感器电连接的图像分析单元，所述图像分析单元用于分析所述图像传感器上采集到的图像是否含暗码信息。
PCT/CN2021/098780 2021-04-15 2021-06-08 一种智能终端获取图像的方法及智能终端拍摄系统 WO2022217728A1 (zh)

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