WO2024067300A1 - 一种人脸图像采集装置和测肤仪 - Google Patents

一种人脸图像采集装置和测肤仪 Download PDF

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Publication number
WO2024067300A1
WO2024067300A1 PCT/CN2023/120107 CN2023120107W WO2024067300A1 WO 2024067300 A1 WO2024067300 A1 WO 2024067300A1 CN 2023120107 W CN2023120107 W CN 2023120107W WO 2024067300 A1 WO2024067300 A1 WO 2024067300A1
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WO
WIPO (PCT)
Prior art keywords
camera
shooting position
face
slide
image acquisition
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Application number
PCT/CN2023/120107
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English (en)
French (fr)
Inventor
孙建美
靳晨英
刘汀科
Original Assignee
厦门松霖科技股份有限公司
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Publication of WO2024067300A1 publication Critical patent/WO2024067300A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
    • F16M11/08—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting around a vertical axis, e.g. panoramic heads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M13/00—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles
    • F16M13/02—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle

Definitions

  • the present invention relates to cosmetic products, in particular to a skin tester.
  • the main technical problem to be solved by the present invention is to provide a facial image acquisition device that can use a camera to complete the acquisition of facial images.
  • the present invention provides a face image acquisition device. It comprises: a guide rail extending horizontally along the width direction of the face, a slide table movably connected to the guide rail, and a camera rotatably matched with the slide table;
  • the slide drives the camera to move to a first shooting position, a second shooting position and a third shooting position along the direction in which the guide rail extends; the second shooting position and the third shooting position are respectively located on the left and right sides of the first shooting position; when the camera moves to the second shooting position or the third shooting position, the camera rotates relative to the slide in the direction opposite to the movement of the slide.
  • the guide rail includes a threaded rod and a first motor for driving the threaded rod to rotate, and the output shaft of the first motor cooperates with a worm gear sleeved on one end of the threaded rod through a worm.
  • the slide is rotatably matched with the camera through a second motor.
  • the slide is L-shaped, the side surface of the vertical part of the slide has a threaded hole for the threaded rod to pass through, and the upper surface of the horizontal part is provided with the second motor.
  • the first shooting position is a central position, and when the camera is located at the first shooting position, the angle between the central axis of the camera and the central axis of the slide is 0 degrees.
  • the camera when the camera moves from the first position to the left to the second shooting position, the camera rotates to the right by an angle ⁇ relative to the slide; when the camera moves from the first position to the right to the third shooting position, the camera rotates to the left by an angle ⁇ relative to the slide.
  • the angle ⁇ is 15°.
  • the present invention also provides a skin tester, comprising: an outer shell, an inner shell, a base, a light shield, a light source board and a face image acquisition device as described above;
  • the inner shell has a containing space, one side of which is an opening surface;
  • the shading cover is rotatably connected to the housing to open or close the opening surface; when the shading cover is rotated to the open position, the shading cover surrounds a space for accommodating the user's head; the light source panel is arranged on one side of the accommodating space facing the opening surface;
  • the outer shell is sleeved outside the inner shell, and a sandwich is defined between the outer shell and the inner shell, and the face image acquisition device is arranged in the sandwich; the light source board is respectively provided with clearance openings at the parts corresponding to the first shooting position, the second shooting position and the third shooting position.
  • a fixing seat is respectively provided at both ends of the guide rail along the length direction, and the fixing seat includes a lug for connecting the guide rail and a platform for the inner and outer walls.
  • the inner shell is provided with a forehead positioning rod and a chin support seat at the opening surface of the accommodating space; the forehead positioning rod is connected to the top inner wall of the accommodating space, and the chin support seat is connected to the bottom inner wall of the accommodating space.
  • the present invention provides a facial image acquisition device, which uses a single camera to first shoot at the first shooting position in the middle; secondly, the camera is moved to the second shooting position through a worm gear transmission, and then the second motor on the slide is started to rotate a specific angle, so that the left face picture can be completely taken; finally, the right face picture information is also collected.
  • a single camera is formed to automatically collect full-face picture data under different light sources (white light, parallel polarized light, cross polarized light, UV light, blue light, brown light) from three angles of left, middle and right, and the WIFI signal data is transmitted back to the back-end database or the APP local algorithm is used to reconstruct the 3D face model, and the data algorithm is operated and analyzed to form a complete facial health status report.
  • the dimensions of the analysis include blackheads, pores, porphyrin, acne, texture, sensitivity, wrinkles, spots, dark circles, etc., and the severe position of each dimension is accurately marked on the corresponding position of the face.
  • the present invention provides a face image acquisition device, the guide rail used is a linear guide rail, and the camera is driven to rotate by a second motor, so that the camera can still be aimed at the face to shoot after moving to both sides of the face on the linear guide rail.
  • the structure is relatively simple and easy to implement.
  • FIG1 is a three-dimensional diagram of a skin tester in a preferred embodiment of the present invention.
  • FIG2 is a side view of a skin tester in a preferred embodiment of the present invention.
  • FIG3 is a front view of a skin tester in a preferred embodiment of the present invention.
  • FIG4 is a schematic diagram of a camera located at a first shooting position in a preferred embodiment of the present invention.
  • FIG5 is a schematic diagram of a camera located at a second shooting position in a preferred embodiment of the present invention.
  • FIG6 is a schematic diagram of a camera located at a third shooting position in a preferred embodiment of the present invention.
  • FIG7 is a three-dimensional diagram of a facial image acquisition device in a preferred embodiment of the present invention.
  • FIG8 is a front view of a facial image acquisition device in a preferred embodiment of the present invention.
  • FIG9 is a top view of a facial image acquisition device in a preferred embodiment of the present invention.
  • FIG. 10 is a flow chart of a face reconstruction algorithm in a preferred embodiment of the present invention.
  • connection can be a wall-mounted connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
  • this embodiment provides a skin tester, comprising: an outer shell 1, an inner shell 2, a base 3, a light shield 4, a light source panel 5 and a face image acquisition device 6; the base 3 is used to support the outer shell 1, and the outer shell 1 can be placed stably on a supporting surface.
  • the face image acquisition device 6 comprises: a guide rail 61 extending horizontally along the width direction of the face, a slide 62 movably connected to the guide rail 61, and a camera 63 rotatably matched with the slide 62; the slide 62 drives the camera 63 to move to a first shooting position, a second shooting position and a third shooting position along the direction in which the guide rail 61 extends; the second shooting position and the third shooting position are respectively located on the left and right sides of the first shooting position; when the camera 63 moves to the second shooting position or the third shooting position, the camera 63 moves against the slide relative to the slide 62.
  • the direction in which the stage 62 moves is rotated.
  • the inner shell 2 has a accommodating space, one side of which is an opening surface; the hood 4 is rotatably connected to the outer shell 1 to open or close the opening surface; when the hood 4 is rotated to the open position, the hood 4 surrounds a space for accommodating the user's head; the light source board 5 is arranged on the side of the accommodating space facing the opening surface; the outer shell 1 is sleeved on the outside of the inner shell 2, and an interlayer is defined between the outer shell 1 and the inner shell 2, and the face image acquisition device 6 is arranged in the interlayer; the light source board 5 is respectively provided with a clearance opening 51 at the parts corresponding to the first shooting position, the second shooting position and the third shooting position.
  • the inner shell 2 is provided with a forehead positioning rod 21 and a chin support seat 22 at the opening surface of the accommodating space; the forehead positioning rod 21 is connected to the top inner wall of the accommodating space, and the chin support seat 22 is connected to the bottom inner wall of the accommodating space.
  • the forehead positioning rod 21 and the chin support seat 22 can be used to position and support the user's head, so that the user's head can remain still during the entire shooting process, ensuring that the camera 63 can capture clear images.
  • the light shield 4 when the user's head is placed on the opening surface of the accommodating space, by opening the light shield 4, it is possible to prevent external light from interfering with image acquisition, and it is also possible to prevent the light emitted by the light source plate 5 from leaking out.
  • the light emitted by the light source plate 5 shines on the user's face, and after reflection, enters the camera 63 through the opening, thereby completing the shooting process. Since the camera 63 can be moved between three positions through the slide 62, such a camera 63 can complete image acquisition at three positions: the center, left side, and right side of the face. And after the camera 63 moves to the second shooting position and the third shooting position, it will rotate a certain angle relative to the slide 62, thereby ensuring that the camera 63 can be facing the user and ensuring the image acquisition effect.
  • the light source board 5 in this embodiment There are a variety of light sources with different wavelengths, which are specifically divided into white light, parallel polarized light, cross polarized light, UV light, blue light, and brown light. Among them, brown light can show the degree of dryness and dehydration of the lips, and is used to detect the smoothness of the lips. Under UV light, the skin surface will show brick-red fluorescent dots, which are used to detect porphyrins (porphyrins). At the same time, UV light can detect cotton wool on the surface of the face and ultraviolet spots (sun spots) deep in the skin.
  • Cross polarization can completely filter out the interference of mirror reflection light on the surface of the skin, and can observe the diffuse reflection light deeper in the skin, which is used to detect the sensitivity of the deep skin and brown spots.
  • Parallel polarization can detect problems such as oil and texture on the surface of the skin. Blue light can detect and analyze the bacteria that cause acne in the sebaceous glands, so as to deduce the probability of skin causing acne in the near future, and blue light can also be used to see skin problems that cannot be identified by the naked eye.
  • the camera 63 is located at the middle starting position, that is, the first shooting position. At this time, the angle between the central axis of the camera 63 and the central axis of the slide 62 is 0 degrees.
  • the camera 63 captures whether all facial features are within the frame, and prompts the user to rotate left and right and swing accordingly through voice, reminds the user to close their eyes and keep still before taking pictures, and then switches different light sources to take corresponding pictures of the front face;
  • the slide 62 drives the camera 63 to move to the left to the second shooting position. After reaching the second shooting position, the camera 63 rotates 15° to the right, and then switches to a different light source to shoot the corresponding picture of the left side of the face again.
  • the rotation angle does not have to be 15°, but it is only necessary to rotate the left side of the face so that it can be clearly presented in the shooting area of the camera 63.
  • the specific angle can be set arbitrarily according to the different imaging angles of the camera 63.
  • the slide 62 drives the camera 63 to move rightward back to the first shooting position.
  • the camera 63 The slide 62 drives the camera 63 to move rightward to the third shooting position again. After reaching the third shooting position, the camera 63 rotates 15° to the left, and then switches to a different light source to shoot the corresponding picture of the right side of the face again.
  • the slide 62 drives the camera 63 to move leftward to return to the first shooting position, and the camera 63 rotates rightward to return to its original position.
  • the full face data images collected from the left, middle and right angles are transmitted back to the back-end database through WIFI signal data or the local algorithm of the APP is used to reconstruct the 3D face model.
  • the data algorithm is operated and analyzed to form a complete facial health status report.
  • the analysis dimensions include blackheads, pores, porphyria, acne, texture, sensitivity, wrinkles, spots, dark circles, etc., and the severe position of each dimension is accurately marked on the corresponding position of the face.
  • the face can be expressed in 2D or 3D.
  • the first shooting position is used as an example, followed by the second shooting position, and finally the third shooting position.
  • this order should not be used as a limitation. In fact, there is no strict order in which the three shooting positions are shot. It does not matter which position is shot first, as long as one front face picture and two side face pictures can be obtained in the end.
  • the reconstruction of the 3D face model in step 5 specifically includes: 1) inputting the three face images into the target detection algorithm respectively to detect the relative position of the person; 2) cropping the three face images respectively to obtain cropped portrait images; 3) inputting the cropped portrait images into the 3D reconstruction algorithm model respectively to obtain face point cloud data; 4) splicing the point cloud data of the three faces; 5) the system is reconstructed and runs to output 3D face data.
  • the guide rail 61 includes a threaded rod 611 and a first motor 612 for driving the threaded rod 611 to rotate.
  • the output shaft of the first motor 612 is connected to the sleeve through a worm 613.
  • the worm gear 614 provided at one end of the threaded rod 611 is in driving cooperation.
  • the slide 62 is in rotation cooperation with the camera 63 through the second motor 64.
  • the slide 62 is L-shaped, a side surface of a vertical portion thereof is provided with a threaded hole for the threaded rod 611 to pass through, and an upper surface of a horizontal portion is provided with the second motor 64 .
  • the threaded rod 611 and the first motor 612 are matched with each other through the worm gear mechanism, and the worm gear mechanism meshes with the worm 614 fixed on the threaded rod 611 through the worm 613 on the output shaft of the first motor, and the worm gear 614 drives the threaded rod 611 to rotate, thereby driving the slide 62 on the threaded rod 611 to move left or right by virtue of the meshing of the screw teeth; the moving direction of the slide 62 is controlled by the forward or reverse rotation of the first motor 612.
  • the rotation direction of the camera 63 relative to the slide 62 is controlled by the forward or reverse rotation of the second electrode.
  • a fixing seat 65 is respectively provided at both ends of the threaded rod 611 along the length direction, and the fixing seat 65 includes a lug for connecting the guide rail 61 and a platform for the inner and outer walls.
  • the fixing seat can be installed on the threaded rod 611 through the lug, and the worm gear 614 can be fixed to the side of the fixing seat 65 through the locking nut, thereby completing the fixing of the worm gear 614 and the fixing seat 65.
  • the present invention discloses a facial image acquisition device, which uses a single camera to capture images from three sides: left, middle and right.
  • the 3D face model is reconstructed by the back-end database or the local algorithm of the APP through the WIFI signal data, and the data algorithm is operated and analyzed to form a complete facial health report.
  • the dimensions of the analysis include blackheads, pores, porphyria, acne, texture, sensitivity, wrinkles, spots, dark circles, etc., and the severe position of each dimension is accurately marked on the corresponding position of the face.
  • the invention has a wide range of uses and can be used for a variety of skin testers.

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Abstract

一种人脸图像采集装置（6）以及包括人脸图像采集装置（6）的测肤仪。人脸图像采集装置（6）包括：沿着人脸宽度方向水平延伸的导轨（61）、与导轨（61）活动连接的滑台（62）和与滑台（62）转动配合的摄像头（63）；滑台（62）沿着导轨（61）延伸的方向带动摄像头（63）移动至第一拍摄位置、第二拍摄位置和第三拍摄位置；第二拍摄位置和第三拍摄位置分别位于第一拍摄位置的左右两侧；摄像头（63）移动至第二拍摄位置或第三拍摄位置时，摄像头（63）相对于滑台（62）逆着滑台（62）移动的方向转动。人脸图像采集装置（6）能够使用一个摄像头（63）完成对人脸图像的采集。测肤仪包括：外壳（1）、内壳（2）、底座（3）、遮光罩（4）、光源板（5）和人脸图像采集装置（6）。

Description

一种人脸图像采集装置和测肤仪 技术领域
本发明涉及美容用品，尤其涉及测肤仪。
背景技术
随着科技的发展，人们越来越关心健康和美容，而对人脸皮肤的检测是重要的一部分，定量分析皮肤的色斑，痤疮，毛孔，皱纹，纹理，油份，皮肤颜色，紫外斑，粉刺，红色敏感度和色素问题，不仅可以检测已经暴露在肌肤表面的问题，还能够通过定量分析隐藏在皮肤基底层的问题，让您能够有充分的时间将这些问题扑灭在萌芽状态，让客户直观、快速了解自己的皮肤状况，并根据客户的肌肤状况更加有效地进行皮肤治疗给出相应的治疗方案和推荐使用的产品，现有的对皮肤进行检测的皮肤检测装置需要使用额头定位杆和下巴垫来对使用者的头部进行定位固定，然后再进行拍照。为了能够采集到整张脸的图像，传统的测肤仪往往需要三个摄像头，分别从正面、左侧和右侧对人脸进行图像采集，这种方式成本比较高。
发明内容
本发明所要解决的主要技术问题是提供一种人脸图像采集装置，能够使用一个摄像头完成对人脸图像的采集。
为了解决上述的技术问题，本发明提供了一种人脸图像采集装置， 包括：沿着人脸宽度方向水平延伸的导轨、与导轨活动连接的滑台和与所述滑台转动配合的摄像头；
所述滑台沿着导轨延伸的方向带动摄像头移动至第一拍摄位置、第二拍摄位置和第三拍摄位置；所述第二拍摄位置和第三拍摄位置分别位于第一拍摄位置的左右两侧；所述摄像头移动至第二拍摄位置或第三拍摄位置时，所述摄像头相对于滑台逆着滑台移动的方向转动。
在一较佳实施例中：所述导轨包括螺纹杆和用于驱动螺纹杆转动的第一电机，所述第一电机的输出转轴通过蜗杆与套设在螺纹杆一端的蜗轮传动配合。
在一较佳实施例中：所述滑台通过第二电机和摄像头转动配合。
在一较佳实施例中：所述滑台为L型，其竖直部分的侧面具有供所述螺纹杆穿过的螺纹孔，水平部分的上表面设置有所述第二电机。
在一较佳实施例中：所述第一拍摄位置为居中位置，所述摄像头位于第一拍摄位置时，摄像头中轴线与滑台中轴线之间的夹角为0度。
在一较佳实施例中：所述摄像头由第一位置向左移动至第二拍摄位置时，所述摄像头相对于滑台向右转动角度α；所述摄像头由第一位置向右移动至第三拍摄位置时，所述摄像头相对于滑台向左转动角度α。
在一较佳实施例中：所述角度α为15°。
本发明还提供了测肤仪，包括：外壳、内壳、底座、遮光罩、光源板和如上所述的一种人脸图像采集装置；
所述内壳具有一容置空间，所述容置空间的一侧为开口面；所述 遮光罩与外壳转动连接以打开或关闭所述开口面；所述遮光罩转动至打开位置时，所述遮光罩包围出一容置使用者头部的空间；所述光源板设置在容置空间朝向所述开口面的一侧；
所述外壳套设在内壳外，并在外壳和内壳之间定义出一夹层，所述一种人脸图像采集装置设置在夹层内；所述光源板在对应第一拍摄位置、第二拍摄位置和第三拍摄位置的部分分别设置有让位开口。
在一较佳实施例中：所述导轨沿着长度方向的两端分别设置有一固定座，所述固定座包括用于连接导轨的凸耳和用于内外外壁的平台。
在一较佳实施例中：所述内壳在容置空间的开口面处设置有额头定位杆和下巴支撑座；所述额头定位杆与容置空间的顶部内壁连接，下巴支撑座与容置空间的底部内壁连接。
相较于现有技术，本发明的技术方案具备以下有益效果：
1.本发明提供了一种人脸图像采集装置，采用单个摄像头，先在中间的第一拍摄位置拍摄；其次通过涡轮蜗杆传动，将摄像头移动到第二拍摄位置，再启动滑座上的第二电机，转动特定角度，这样可完整拍摄左侧人脸图片；最后同样采集右侧人脸图片信息。从而形成单个摄像头从左中右侧三个角度，自动采集不同光源下(白光、平行偏正光、交叉偏正光、UV光、蓝光、棕色光)的全脸图片数据，通过WIFI信号数据回传后端数据库或利用APP本地算法，重建3D人脸模型，数据算法运算分析，形成一份完整的面部健康状况报告，分析的维度有黑头、毛孔、紫质、痤疮、纹理、敏感、皱纹、色斑、黑眼圈等，并将各个维度的重度位置准确标识在人脸对应位置上。
2.本发明提供了一种人脸图像采集装置，所用的导轨为直线型导轨，并且通过第二电机带动摄像头转动，从而实现摄像头在直线型的导轨上移动至人脸两侧后仍然可以对准人脸进行拍摄。结构比较简单容易实现。
附图说明
图1为本发明优选实施例中测肤仪的立体图；
图2为本发明优选实施例中测肤仪的侧视图；
图3为本发明优选实施例中测肤仪的正视图；
图4为本发明优选实施例中摄像头位于第一拍摄位置的示意图；
图5为本发明优选实施例中摄像头位于第二拍摄位置的示意图；
图6为本发明优选实施例中摄像头位于第三拍摄位置的示意图；
图7为本发明优选实施例中一种人脸图像采集装置的立体图；
图8为本发明优选实施例中一种人脸图像采集装置的正视图；
图9为本发明优选实施例中一种人脸图像采集装置的俯视图；
图10为本发明优选实施例中人脸重建算法的流程图。
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；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做出创造性劳动前提下所获得的所有其他实施例， 都属于本发明保护的范围。
在本发明的描述中，需要说明的是，术语“上”、“下”、“内”、“外”、“顶/底端”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，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发明的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“设置有”、“套设/接”、“连接”等，应做广义理解，例如“连接”，可以是壁挂连接，也可以是可拆卸连接，或一体地连接，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，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发明中的具体含义。
参考图1-图10，本实施例提供了测肤仪，包括：外壳1、内壳2、底座3、遮光罩4、光源板5和一种人脸图像采集装置6；底座3用于支撑外壳1，并且将外壳1能够平稳地放置在支撑面上。
所述一种人脸图像采集装置6，包括：沿着人脸宽度方向水平延伸的导轨61、与导轨61活动连接的滑台62和与所述滑台62转动配合的摄像头63；所述滑台62沿着导轨61延伸的方向带动摄像头63移动至第一拍摄位置、第二拍摄位置和第三拍摄位置；所述第二拍摄位置和第三拍摄位置分别位于第一拍摄位置的左右两侧；所述摄像头63移动至第二拍摄位置或第三拍摄位置时，所述摄像头63相对于滑台62逆着滑 台62移动的方向转动。
所述内壳2具有一容置空间，所述容置空间的一侧为开口面；所述遮光罩4与外壳1转动连接以打开或关闭所述开口面；所述遮光罩4转动至打开位置时，所述遮光罩4包围出一容置使用者头部的空间；所述光源板5设置在容置空间朝向所述开口面的一侧；所述外壳1套设在内壳2外，并在外壳1和内壳2之间定义出一夹层，所述一种人脸图像采集装置6设置在夹层内；所述光源板5在对应第一拍摄位置、第二拍摄位置和第三拍摄位置的部分分别设置有让位开口51。
所述内壳2在容置空间的开口面处设置有额头定位杆21和下巴支撑座22；所述额头定位杆21与容置空间的顶部内壁连接，下巴支撑座22与容置空间的底部内壁连接。通过额头定位杆21和下巴支撑座22就可以对用户的头部进行定位和支撑，这样用户的头部在整个拍摄过程中就能保持静止不动，确保摄像头63能够拍摄到清晰的图像。
这样当使用者的头部放置在容置空间的开口面时，通过将遮光罩4打开，就可以避免外界光线照射对图像采集造成干扰，也可以避免光源板5发出的光线外泄。光源板5发出的光线照射在使用者面部，反射后通过让位开口进入摄像头63中，从而完成拍摄过程。由于摄像头63通过滑台62可以在三个位置之间移动，这样一个摄像头63就可以完成人脸居中、左侧和右侧三个位置的图像采集。并且摄像头63移动到第二拍摄位置和第三拍摄位置后，都会相对于滑台62转动一定的角度，从而确保摄像头63可以朝向使用者，保证图像采集的效果。
为了从多个维度判断人脸所存在的问题，本实施例中光源板5上 设置有多种不同波长的光源，具体分为白光、平行偏正光、交叉偏正光、UV光、蓝光、棕色光。其中棕色光可显现嘴唇干燥缺水程度，用于检测唇润度。在UV光下皮肤表面会显示出砖红色荧光点状，用于检测紫质(卟啉)。同时UV光可以检测脸部表面的棉絮物以及皮肤深层的紫外斑(晒斑)等。交叉偏光可以完全过滤皮肤表面的镜面反射光干扰，可以观察皮肤更深层次的漫反射光，用于检测皮肤深层的敏感度以及棕色斑。平行偏光可以检测皮肤表层的油脂、纹理等问题。蓝光可以检测皮脂腺内引发痤疮的细菌并进行分析，从而得出近期内皮肤引发痤疮几率的大小，还可以通过蓝光看到肉眼无法识别的皮肤问题。
具体来说，整个测肤过程表述如下：
1)摄像头63位于在中部起始位，也就是第一拍摄位置。此时，摄像头63中轴线与滑台62中轴线之间的夹角为0度。摄像头63捕捉人脸特征是否全部在图框内，并通过语音提示用户进行相应的左右转动及摆动，拍照前提醒用户请闭眼且保持不动，然后通过切换不同光源，拍摄正脸的相应图片；
2)滑台62带动摄像头63向左移动至第二拍摄位置，到位后摄像头63向右转动15°，然后通过切换不同光源，再次拍摄左侧脸的相应图片；需要说明的是，这个转动的角度不是一定要15°，只是通过转动这个角度让人脸的左侧能够清晰呈现在摄像头63的拍摄区域内就可以了，具体的角度可以根据摄像头63成像角度的不同可以任意设置。
3)滑台62带动摄像头63向右移动回到第一拍摄位置，摄像头63 向左转动回位。滑台62再次带动摄像头63向右移动至第三拍摄位置，到位后摄像头63向左转动15°，然后通过切换不同光源，再次拍摄右侧脸的相应图片；
4)滑台62带动摄像头63向左移动回到第一拍摄位置，摄像头63向右转动回位。
5)从左中右侧三个角度采集到的全脸数据图片，通过WIFI信号数据回传后端数据库或利用APP本地算法，重建3D人脸模型，数据算法运算分析，形成一份完整的面部健康状况报告，分析的维度有黑头、毛孔、紫质、痤疮、纹理、敏感、皱纹、色斑、黑眼圈等，并将各个维度的重度位置准确标识在人脸对应位置上，人脸可以采用2D或3D的表现方式。
本实施例中以先在第一拍摄位置拍摄、然后第二拍摄位置拍摄、最后第三拍摄位置拍摄为例。但是不应以此顺序为限制，实际上这三个拍摄位置的拍摄顺序没有严格的先后区分，先在哪个位置拍摄都是可以的，只要最终能够得到一张正脸图片和两张侧脸图片就可以了。
具体来说，步骤5中重建3D人脸模型具体包括：1)分别将三张人脸图输入到目标检测算法中，检测人相对位置；2)分别裁剪三张人脸图片，得到裁剪后的人像图；3)分别将裁剪后人像图输入3D重建算法模型中，得到人脸点云数据；4)将三张人脸的点云数据做人脸拼接；5)系统重建运行，输出3D人脸数据。
本实施例中，所述导轨61包括螺纹杆611和用于驱动螺纹杆611转动的第一电机612，所述第一电机612的输出转轴通过蜗杆613与套 设在螺纹杆611一端的蜗轮614传动配合。为了实现摄像头63相对滑台62的转动，所述滑台62通过第二电机64和摄像头63转动配合。
具体来说，所述滑台62为L型，其竖直部分的侧面具有供所述螺纹杆611穿过的螺纹孔，水平部分的上表面设置有所述第二电机64。
经过上述设计后，螺纹杆611和第一电机612之间就通过蜗轮蜗杆机构实现传动配合，蜗轮蜗杆机构通过第一电机输出转轴上的蜗杆613与固定在螺纹杆611上的蜗轮614啮合，蜗轮614带动螺纹杆611转动，从而依靠螺牙啮合，带动螺纹杆611上的滑台62进行向左或者向右移动；滑台62的移动方向是通过第一电机612的正向或反向转动来进行控制的。而摄像头63相对于滑台62的转动方向是通过第二电极的正向或者反向转动来进行控制的。
此外，为了安装所述一种人脸图像采集装置6，所述螺纹杆611沿着长度方向的两端分别设置有一固定座65，所述固定座65包括用于连接导轨61的凸耳和用于内外外壁的平台。这样通过凸耳就可以将固定座安装在螺纹杆611上，再通过锁紧螺母就可以将蜗轮614固定在固定座65的侧面，从而完成了蜗轮614和固定座65的固定。
以上所述，仅为本发明较佳的具体实施方式，但本发明的设计构思并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，利用此构思对本发明进行非实质性的改动，均属于侵犯本发明保护范围的行为。
工业实用性
本发明一种人脸图像采集装置，通过单个摄像头从左中右侧三个 角度，自动采集不同光源下的全脸图片数据，通过WIFI信号数据回传后端数据库或利用APP本地算法，重建3D人脸模型，数据算法运算分析，形成一份完整的面部健康状况报告，分析的维度有黑头、毛孔、紫质、痤疮、纹理、敏感、皱纹、色斑、黑眼圈等，并将各个维度的重度位置准确标识在人脸对应位置上。本发明使用范围广，可用于多种测肤仪。

Claims (13)

  1. 一种人脸图像采集装置，其特征在于包括：沿着人脸宽度方向水平延伸的导轨、与导轨活动连接的滑台和与所述滑台转动配合的摄像头；
    所述滑台沿着导轨延伸的方向带动摄像头移动至第一拍摄位置、第二拍摄位置和第三拍摄位置；所述第二拍摄位置和第三拍摄位置分别位于第一拍摄位置的左右两侧；所述摄像头移动至第二拍摄位置或第三拍摄位置时，所述摄像头相对于滑台逆着滑台移动的方向转动。
  2. 根据权利要求1所述的一种人脸图像采集装置，其特征在于：所述导轨包括螺纹杆和用于驱动螺纹杆转动的第一电机，所述第一电机的输出转轴通过蜗杆与套设在螺纹杆一端的蜗轮传动配合。
  3. 根据权利要求2所述的一种人脸图像采集装置，其特征在于：所述滑台通过第二电机和摄像头转动配合。
  4. 根据权利要求3所述的一种人脸图像采集装置，其特征在于：所述滑台为L型，其竖直部分的侧面具有供所述螺纹杆穿过的螺纹孔，水平部分的上表面设置有所述第二电机。
  5. 根据权利要求1所述的一种人脸图像采集装置，其特征在于：所述第一拍摄位置为居中位置，所述摄像头位于第一拍摄位置时，摄像头中轴线与滑台中轴线之间的夹角为0度。
  6. 根据权利要求5所述的一种人脸图像采集装置，其特征在于：所述摄像头由第一位置向左移动至第二拍摄位置时，所述摄像头相对于滑台向右转动角度α；所述摄像头由第一位置向右移动至第三拍摄 位置时，所述摄像头相对于滑台向左转动角度α。
  7. 根据权利要求6所述的一种人脸图像采集装置，其特征在于：所述角度α为15°。
  8. 测肤仪，其特征在于包括：外壳、内壳、底座、遮光罩、光源板和权利要求1-7中任一项所述的一种人脸图像采集装置；
    所述内壳具有一容置空间，所述容置空间的一侧为开口面；所述遮光罩与外壳转动连接以打开或关闭所述开口面；所述遮光罩转动至打开位置时，所述遮光罩包围出一容置使用者头部的空间；所述光源板设置在容置空间朝向所述开口面的一侧；
    所述外壳套设在内壳外，并在外壳和内壳之间定义出一夹层，所述一种人脸图像采集装置设置在夹层内；所述光源板在对应第一拍摄位置、第二拍摄位置和第三拍摄位置的部分分别设置有让位开口。
  9. 根据权利要求8所述的测肤仪，其特征在于：所述导轨沿着长度方向的两端分别设置有一固定座，所述固定座包括用于连接导轨的凸耳和用于内外外壁的平台。
  10. 根据权利要求8所述的测肤仪，其特征在于：所述内壳在容置空间的开口面处设置有额头定位杆和下巴支撑座；所述额头定位杆与容置空间的顶部内壁连接，下巴支撑座与容置空间的底部内壁连接。
  11. 根据权利要求8所述的测肤仪，其特征在于：所述光源板设置有多种不同波长的光源，包括：白光、平行偏正光、交叉偏正光、UV光、蓝光、棕色光。
  12. 根据权利要求8所述的测肤仪，其特征在于：所述人脸图像采 集包括：
    1)摄像头位于在中部起始位，即第一拍摄位置，摄像头捕捉人脸特征是否全部在图框内，并通过语音提示用户进行相应的左右转动及摆动，然后通过切换不同光源，拍摄正脸的相应图片；
    2)滑台带动摄像头向左移动至第二拍摄位置，到位后摄像头向右转动，然后通过切换不同光源，再次拍摄左侧脸的相应图片；
    3)滑台带动摄像头向右移动回到第一拍摄位置，摄像头向左转动回位；滑台再次带动摄像头向右移动至第三拍摄位置，到位后摄像头向左转动，然后通过切换不同光源，再次拍摄右侧脸的相应图片；
    4)滑台带动摄像头向左移动回到第一拍摄位置，摄像头向右转动回位；
    5)从左中右侧三个角度采集到的全脸数据图片，通过WIFI信号数据回传后端数据库或利用APP本地算法，重建3D人脸模型，数据算法运算分析，形成一份完整的面部健康状况报告，分析的维度有黑头、毛孔、紫质、痤疮、纹理、敏感、皱纹、色斑、黑眼圈，并将各个维度的重度位置准确标识在人脸对应位置上，人脸可以采用2D或3D的表现方式。
  13. 根据权利要求12所述的测肤仪，其特征在于：所述步骤5中重建3D人脸模型具体包括：
    1)分别将三张人脸图输入到目标检测算法中，检测人相对位置；2)分别裁剪三张人脸图片，得到裁剪后的人像图；3)分别将裁剪后人像图输入3D重建算法模型中，得到人脸点云数据；4)将三张人脸 的点云数据做人脸拼接；5)系统重建运行，输出3D人脸数据。
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KR20140129864A (ko) * 2012-10-31 2014-11-07 김종율 피부촬영장치
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