WO2019223521A1 - Module d'imagerie, dispositif électronique, procédé de traitement d'image et support d'informations - Google Patents

Module d'imagerie, dispositif électronique, procédé de traitement d'image et support d'informations Download PDF

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Publication number
WO2019223521A1
WO2019223521A1 PCT/CN2019/085609 CN2019085609W WO2019223521A1 WO 2019223521 A1 WO2019223521 A1 WO 2019223521A1 CN 2019085609 W CN2019085609 W CN 2019085609W WO 2019223521 A1 WO2019223521 A1 WO 2019223521A1
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WIPO (PCT)
Prior art keywords
light
imaging
concave lens
image
display screen
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Application number
PCT/CN2019/085609
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English (en)
Chinese (zh)
Inventor
张磊
孙景阳
杨乐
Original Assignee
Oppo广东移动通信有限公司
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.)
Filing date
Publication date
Priority claimed from CN201810500609.3A external-priority patent/CN110536045A/zh
Priority claimed from CN201820778482.7U external-priority patent/CN208386719U/zh
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Publication of WO2019223521A1 publication Critical patent/WO2019223521A1/fr

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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/20—Circuitry for controlling amplitude response
    • H04N5/202—Gamma control

Definitions

  • the present disclosure relates to the technical field of mobile terminals, and in particular, to an imaging module, an electronic device, an image processing method, and a storage medium.
  • a preset position of the display screen is hollowed out, or a preset position of the display screen is set to transmit light, and then the front camera is set below the preset position of the display screen, thereby The front camera can capture images through hollowed out positions or light-transmitting areas.
  • the present disclosure provides an imaging module, an electronic device, an image processing method, and a storage medium, so as to display a larger framing range in the same imaging area, which can effectively improve the user's photographing experience, and is used to solve the problems in the prior art.
  • the technical problem that the front camera is set below the light-transmitting area of the display screen and the viewfinder range of the front camera is small.
  • An embodiment of one aspect of the present disclosure proposes an imaging module.
  • the imaging module is disposed below a display screen of an electronic device and corresponds to a light-transmitting area of the display screen.
  • the imaging module includes: a concave lens, and an imaging module. Lens group and image sensor;
  • the concave lens is disposed at a position corresponding to the light-transmitting area of the display screen, and is used to diffuse the light passing through the light-transmitting area;
  • the imaging lens group is disposed on one side of the light-emitting surface of the concave lens, and is used for optically transforming the light diffused by the concave lens;
  • the image sensor is disposed on one side of a light emitting surface of the imaging lens group, and is configured to collect an imaging image according to light emitted from the imaging lens group.
  • the imaging module in the embodiment of the present disclosure uses a concave lens at a position corresponding to the light-transmitting area of the display screen to diffuse the light transmitted through the light-transmitting area, and then uses an imaging lens group disposed on the light-emitting surface side of the concave lens to The divergent light is optically transformed, and then an image sensor is used to acquire an imaged image based on the light emitted from the imaging lens group by using an image sensor disposed on the light emitting surface side of the imaging lens group.
  • a concave lens at a position corresponding to the light-transmitting area of the display screen a larger framing range can be displayed in the same imaging area, which can effectively improve the photographing experience of the user.
  • An embodiment of another aspect of the present disclosure provides an electronic device, where the electronic device includes a display screen and an imaging module;
  • the display screen includes a light-transmitting area and a non-light-transmitting area, wherein the light-transmitting area is provided with a concave lens for diverging light;
  • the imaging module is disposed on one side of the light-emitting surface of the concave lens, and is configured to perform imaging according to the light emitted by the concave lens.
  • the electronic device diffuses light by providing a concave lens in a light-transmitting area of a display screen of the electronic device, and then uses an imaging module on the light emitting surface side of the concave lens to perform imaging based on the light emitted by the concave lens. Therefore, a larger framing range can be displayed in the same imaging area, which can effectively improve the user's photographing experience.
  • An embodiment of another aspect of the present disclosure provides an image processing method, where the method includes:
  • the image processing method includes acquiring an imaging image acquired by an image sensor; performing interpolation processing on gray values of at least two adjacent pixel points in the imaging image to obtain gray values of the interpolation pixel points; and according to the interpolation pixels
  • the gray value of the point is used to correct the image.
  • correction of the compressed imaging image can be achieved, distortion of the imaging image can be reduced, and the imaging effect can be effectively improved, which can be beneficial to overall Development of display electronic equipment.
  • An embodiment of yet another aspect of the present disclosure provides another electronic device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor.
  • the processor executes the program, the processor implements the present invention.
  • the image processing method proposed by the foregoing embodiment is disclosed.
  • An embodiment of still another aspect of the present disclosure provides a computer-readable storage medium on which a computer program is stored, which is characterized in that when the program is executed by a processor, the image processing method according to the foregoing embodiment of the present disclosure is implemented.
  • FIG. 1 is a schematic diagram of a light path when a conventional front camera collects an imaging image
  • FIG. 2 is a schematic structural diagram of an imaging module according to a first embodiment of the present disclosure
  • FIG. 3 is a schematic diagram of an optical path when an imaging module collects an imaging image in an embodiment of the present disclosure
  • FIG. 4 is a schematic structural diagram of an electronic device according to a second embodiment of the present disclosure.
  • FIG. 5 is a schematic structural diagram of an electronic device according to a third embodiment of the present disclosure.
  • FIG. 6 is a schematic flowchart of an image processing method according to a fourth embodiment of the present disclosure.
  • FIG. 7 is a schematic diagram of a correspondence relationship between a gray value and brightness of a pixel in an embodiment of the present disclosure
  • FIG. 8 is a schematic diagram of determining interpolation pixels in an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of an electronic device according to a fifth embodiment of the present disclosure.
  • a preset position of the display screen is hollowed out, or a preset position of the display screen is set to transmit light, and then the front camera is set below the preset position of the display screen, thereby The front camera can capture images through hollowed out positions or light-transmitting areas.
  • FIG. 1 is a schematic diagram of an optical path when a conventional front camera collects an imaging image.
  • 11 indicates a non-transparent area of the display screen
  • the front camera includes: an imaging lens group 12 and an image sensor 13.
  • the imaging lens group 12 receives light from a light-transmitting area in the middle of the non-light-transmitting area 11 of the display screen, and emits the light to the image sensor 13 so that the image sensor 13 can collect an imaging image.
  • the image sensor 13 in FIG. 1 is a complementary metal oxide semiconductor device (Complementary Metal Oxide Semiconductor) (CMOS for short), and the CMOS collects an imaging image according to the light emitted from the imaging lens group 12.
  • CMOS complementary metal oxide semiconductor device
  • the CMOS collects an imaging image according to the light emitted from the imaging lens group 12.
  • CMOS can only capture 4 image points, resulting in the framing screen not being fully displayed.
  • the front-facing camera has a smaller viewing range.
  • the present disclosure is mainly directed to the technical problem that the front camera is set under the light-transmitting area of the display screen, which causes the viewfinder image to be incompletely displayed, that is, the front camera has a small viewfinder range, and proposes an imaging module.
  • a concave lens is provided at a position corresponding to the light transmitting area of the display screen to diffuse the light transmitted through the light transmitting area, and then the imaging lens group provided on the light emitting surface side of the concave lens is used to diffuse the concave lens.
  • the light is optically transformed, and then an image sensor disposed on the light emitting surface side of the imaging lens group is used to acquire an imaging image according to the light emitted from the imaging lens group.
  • FIG. 2 is a schematic structural diagram of an imaging module provided in Embodiment 1 of the present disclosure.
  • the connection relationship between the concave lens 110, the imaging lens group 120, and the image sensor 130 in FIG. 2 represents a light transmission sequence, and light passes from the concave lens 110 to the imaging lens.
  • the group 120 is incident on the image sensor 130 to form an image.
  • the imaging module 100 is disposed below a display screen of an electronic device and corresponds to a transparent area of the display screen.
  • the imaging module 100 includes a concave lens 110, an imaging lens group 120, and an image sensor 130. among them,
  • the concave lens 110 is disposed at a position corresponding to the light-transmitting area of the display screen, and is used to diffuse the light passing through the light-transmitting area.
  • a concave lens 110 may be provided at a position corresponding to the light-transmitting area of the display screen, so that the light passing through the light-transmitting area can be diffused by the concave lens 110.
  • the concave lens 110 may be a plano-concave lens, a light incident surface side of the concave lens 110 is a concave surface, and a light emitting surface side of the concave lens 120 is a flat surface.
  • the non-light-transmitting area of the display screen may be covered with a cover plate, and the light-transmitting area of the display screen may not be covered with the cover plate. Further, in order to ensure that the light path is clean, the edge of the concave lens 110 may be connected to the edge of the cover plate.
  • the thickness of the concave lens 110 may match the thickness of the cover plate, and the upper edge of the concave lens 110 is flush with the upper edge of the cover plate.
  • both the light-transmitting area 220 and the non-light-transmitting area 210 of the display screen 200 may cover the cover plate, and the light incident side of the concave lens 110 is adhered to the surface of the cover plate, or the light output of the concave lens 110 is One side of the surface is in contact with the cover surface.
  • the imaging lens group 120 is disposed on the light-emitting surface side of the concave lens 110 and is used for optically transforming the light emitted by the concave lens 110.
  • the imaging lens group 120 may be set to meet the imaging requirements and achieve the specified optical performance such as relative aperture and field of view.
  • the imaging lens group 120 may be disposed on the light emitting surface side of the concave lens 110 to perform optical conversion on the light emitted by the concave lens 110.
  • the optical conversion process here is mainly used for clear imaging at the image sensor 130, including focus adjustment, depth of field adjustment, and the like.
  • the optical axis of the concave lens 110 may be coaxial with the optical axis of the imaging lens group 120.
  • the image sensor 130 is disposed on a light emitting surface side of the imaging lens group 120, and is configured to collect an imaging image according to light emitted from the imaging lens group 120.
  • the image sensor 130 may be used to acquire images for imaging.
  • the image sensor 130 may be a charge coupled device (CCD) or a CMOS, which is not limited.
  • the image sensor 130 may be disposed on the light-emitting surface side of the imaging lens group 120, and the image sensor 130 acquires an imaging image according to light emitted from the imaging lens group 120.
  • FIG. 3 is a schematic diagram of an optical path when an imaging module collects an imaging image in an embodiment of the present disclosure.
  • 210 represents a non-light-transmitting area of the display screen.
  • FIG. 3 only uses the concave lens 110 as a plano-concave lens, and the image sensor 130 is a CMOS example.
  • the non-light-transmitting area 210 of the display screen is covered with a cover plate.
  • the light-transmitting area of the display screen does not cover the cover plate, and the edge of the concave lens 110 may be connected to the edge of the cover plate.
  • FIG. 3 is only an example in which the edge of the concave lens 110 is not in contact with the edge of the cover plate.
  • the concave lens 110 when the concave lens 110 is provided on the electronic device, the concave lens 110 diffuses the light transmitted through the light-transmitting area, and can display 8 image points on 4 CMOS, that is, when set on the electronic device After the concave lens 110, a larger framing range can be displayed in the same imaging area.
  • the imaging module 100 provides a concave lens 110 at a position corresponding to a light-transmitting area of a display screen to diffuse light transmitted through the light-transmitting area, and then uses an imaging lens group provided on the light-emitting surface side of the concave lens 110 120. Optically transform the light diffused by the concave lens 110, and then use the image sensor 130 disposed on the light-emitting surface side of the imaging lens group 120 to acquire an imaging image according to the light emitted from the imaging lens group 120.
  • a larger framing range can be displayed in the same imaging area, which can effectively improve the photographing experience of the user.
  • the present disclosure also proposes an electronic device.
  • FIG. 4 is a schematic structural diagram of an electronic device according to a second embodiment of the present disclosure.
  • the electronic device includes a display screen 200 and an imaging module 100. among them,
  • the display screen 200 includes a non-light-transmitting area 210 and a light-transmitting area 220.
  • the light-transmitting area 220 is provided with a concave lens 110 for diverging light.
  • a concave lens 110 may be provided at a position corresponding to the light-transmitting area 220 of the display screen 200, so that the light passing through the light-transmitting area 220 can be diffused by the concave lens 110.
  • the concave lens 110 may be a plano-concave lens, a light incident surface side of the concave lens 110 is a concave surface, and a light emitting surface side of the concave lens 120 is a flat surface.
  • the non-light-transmitting area 210 of the display screen 200 may be covered with a cover plate, and the light-transmitting area 220 of the display screen 200 may not cover the cover plate. Further, in order to ensure that the light path is clean, the edge of the concave lens 110 may be connected to the edge of the cover plate.
  • the thickness of the concave lens 110 may match the thickness of the cover plate, and the upper edge of the concave lens 110 is flush with the upper edge of the cover plate.
  • both the light-transmitting area 220 and the non-light-transmitting area 210 of the display screen 200 may cover the cover plate, and the light incident side of the concave lens 110 is adhered to the surface of the cover plate, or the light output of the concave lens 110 is One side of the surface is in contact with the cover surface.
  • the non-light-transmitting area 210 of the display screen 200 is covered with the cover plate, and the light-transmitting area 220 is not covered with the cover plate, and the upper edge of the concave lens 110 is flush with the upper edge of the cover plate.
  • the imaging module 100 is disposed on one side of the light-emitting surface of the concave lens 110, and is configured to perform imaging according to the light emitted by the concave lens 110.
  • imaging module 100 in the embodiment of FIG. 2 is also applicable to the imaging module 100 in this embodiment, and details are not described herein again.
  • the optical axis of the concave lens 110 may be coaxial with the optical axis of the imaging module 100.
  • a concave lens 110 is provided on the light-transmitting area 220 of the display screen 200 of the electronic device to diffuse the light, and then the imaging module 100 on the light emitting surface side of the concave lens 110 is used to diffuse the light according to the concave lens 110.
  • the electronic device may further include a processor 300, wherein the imaging module 100 and the processor 300 Electrical connection.
  • the processor 300 is configured to obtain an imaging image from the imaging module 100, perform interpolation processing on at least two adjacent pixel points in the imaging image according to the gray values of the prime points of the at least two adjacent images, and obtain interpolation pixel points.
  • the gray value of the image is corrected according to the gray value of the interpolation pixel.
  • the electronic device obtains an imaging image from an imaging module through a processor in the electronic device, and determines at least two adjacent pixel points in the imaging image according to the gray values of the prime points of the at least two adjacent images. Interpolation processing is performed to obtain the gray value of the interpolated pixel; according to the gray value of the interpolated pixel, the imaging image is corrected.
  • interpolation processing is performed to obtain the gray value of the interpolated pixel; according to the gray value of the interpolated pixel, the imaging image is corrected.
  • by inserting interpolation pixel points between at least two adjacent pixel points it is possible to correct the compressed imaged image, reduce distortion of the imaged image, and thereby improve the imaging effect.
  • the present disclosure also proposes an image processing method.
  • FIG. 6 is a schematic flowchart of an image processing method according to a fourth embodiment of the present disclosure.
  • the image processing method may include the following steps:
  • Step 101 Acquire an imaging image collected by an image sensor.
  • the image sensor is a photosensitive element, such as a CCD or a CMOS, which is not limited.
  • the image sensor may collect an imaging image according to the light emitted from the imaging lens group.
  • Step 102 Interpolate the gray values of at least two adjacent pixels in the imaging image to obtain the gray values of the interpolated pixels.
  • the framing range when the framing range is enlarged by setting a concave lens, a larger framing range will be displayed in the same imaging area, resulting in compression of the imaged image, which may cause distortion of the imaged image. Therefore, in the present disclosure, in order to correct the compressed image and reduce the distortion of the image, thereby improving the imaging effect, the gray values of at least two adjacent pixels in the image can be interpolated. Get the gray value of the interpolated pixel.
  • a mapping relationship between the gray value of at least two adjacent pixel points and the gray value of the interpolated pixel point may be established in advance, and at least two adjacent pixel points in the imaging image may be determined.
  • the grayscale value of the interpolated pixel point corresponding to the grayscale value of at least two adjacent pixel points can be obtained by querying the above mapping relationship, and the operation is simple and easy to implement.
  • a grayscale value and a brightness value of a pixel have a non-linear relationship.
  • a correspondence between the grayscale value and the brightness value may be a gamma curve as shown in FIG. 7.
  • the gray value of the interpolated pixel point can be determined according to the non-linear relationship between the gray value and the brightness value of the pixel point.
  • a correspondence relationship between a gray value and a brightness value of a pixel can be established in advance. After determining a gray value of at least two adjacent pixels, a correspondence relationship between the gray value and the brightness value can be queried. To determine a brightness value corresponding to each pixel of at least two adjacent pixels. Then, the brightness value of the interpolated pixel point is determined according to the brightness value query of at least two adjacent pixel points. For example, the average value of the brightness value query of at least two adjacent pixel points may be calculated, and the average value may be used as Interpolate the brightness values of pixels. For example, see 8.
  • the luminance value of the pixel is interpolated points may be (S 1 + S 2) / 2.
  • any brightness value between the brightness values queried by at least two adjacent pixel points may be used as the brightness value of the interpolated pixel point.
  • the brightness value corresponding to A can be determined as S 1
  • the brightness value corresponding to B is S 2
  • the brightness value of the interpolation pixel can be Alternatively, the brightness value between the brightness values queried by at least two adjacent pixel points may be determined according to any other algorithm, which is not limited.
  • the corresponding relationship between the gray value and the brightness can be queried according to the brightness value of the interpolation pixel to obtain the gray value of the interpolation pixel.
  • the gray value of the interpolation pixel point can be determined according to the gamma curve.
  • Step 103 Perform correction processing on the imaged image according to the gray value of the interpolation pixel point.
  • a correction process may be performed on the imaging image according to the gray value of the interpolation pixel point.
  • an interpolation pixel point may be inserted between at least two adjacent pixel points to obtain a corrected imaging image.
  • the gray value c corresponding to the interpolation pixel point can be inserted between a and b.
  • the image processing method of this embodiment obtains an imaging image collected by an image sensor; performs interpolation processing on the gray values of at least two adjacent pixels in the imaging image to obtain the gray values of the interpolation pixels; and according to the interpolation pixels
  • the gray value of the image is corrected for the image.
  • correction of the compressed imaging image can be achieved, distortion of the imaging image can be reduced, and the imaging effect can be effectively improved, which can be beneficial to overall Development of display electronic equipment.
  • the present disclosure also proposes another electronic device.
  • FIG. 9 is a schematic structural diagram of an electronic device according to a fifth embodiment of the present disclosure.
  • the electronic device includes: a memory 401, a processor 402, and a computer program stored on the memory 401 and executable on the processor 402.
  • the processor 402 executes the program, the implementation as proposed in the foregoing embodiment of the present disclosure Image processing method.
  • the present disclosure also proposes a computer-readable storage medium on which a computer program is stored, which is characterized in that when the program is executed by a processor, the image processing method as proposed in the foregoing embodiment of the present disclosure is implemented.
  • first and second are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as “first” and “second” may explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "plurality” is at least two, for example, two, three, etc., unless it is specifically and specifically defined otherwise.
  • any process or method description in a flowchart or otherwise described herein can be understood as representing a module, fragment, or portion of code that includes one or more executable instructions for implementing steps of a custom logic function or process
  • the scope of the preferred embodiments of the present disclosure includes additional implementations in which the functions may be performed out of the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved, which should It is understood by those skilled in the art to which the embodiments of the present disclosure belong.
  • a sequenced list of executable instructions that can be considered to implement a logical function can be embodied in any computer-readable medium,
  • the instruction execution system, device, or device such as a computer-based system, a system including a processor, or other system that can fetch and execute instructions from the instruction execution system, device, or device), or combine these instruction execution systems, devices, or devices Or equipment.
  • a "computer-readable medium” may be any device that can contain, store, communicate, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device.
  • computer readable media include the following: electrical connections (electronic devices) with one or more wirings, portable computer disk cartridges (magnetic devices), random access memory (RAM), Read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disk read-only memory (CDROM).
  • the computer-readable medium may even be paper or other suitable medium on which the program can be printed, because, for example, by optically scanning the paper or other medium, followed by editing, interpretation, or other suitable Processing to obtain the program electronically and then store it in computer memory.
  • portions of the present disclosure may be implemented in hardware, software, firmware, or a combination thereof.
  • multiple steps or methods may be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system.
  • Discrete logic circuits with logic gates for implementing logic functions on data signals Logic circuits, ASICs with suitable combinational logic gate circuits, programmable gate arrays (PGA), field programmable gate arrays (FPGAs), etc.
  • a person of ordinary skill in the art can understand that all or part of the steps carried by the methods in the foregoing embodiments may be implemented by a program instructing related hardware.
  • the program may be stored in a computer-readable storage medium.
  • the program is When executed, one or a combination of the steps of the method embodiment is included.
  • each functional unit in each embodiment of the present disclosure may be integrated into one processing module, or each unit may exist separately physically, or two or more units may be integrated into one module.
  • the above integrated modules can be implemented in the form of hardware or software functional modules. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.
  • the aforementioned storage medium may be a read-only memory, a magnetic disk, or an optical disk.

Abstract

L'invention concerne un module d'imagerie, un dispositif électronique, un procédé de traitement d'image et un support d'informations. Le module d'imagerie est agencé sous un écran d'affichage d'un dispositif électronique, à une position qui correspond à une région de transmission de lumière de l'écran d'affichage. Le module d'imagerie comprend : une lentille concave, un groupe de lentilles d'imagerie et un capteur d'image. La lentille concave est agencée à une position correspondant à la région de transmission de lumière de l'écran d'affichage, et est utilisée pour dévier la lumière traversant la région de transmission de lumière. Le groupe de lentilles d'imagerie est agencé sur un côté d'une face d'émergence de lumière de la lentille concave et est utilisé pour effectuer une transformation optique sur la lumière déviée par la lentille concave. Le capteur d'image est agencé sur un côté d'une face d'émergence de lumière du groupe de lentilles d'imagerie, et est utilisé pour collecter une image imagée en fonction de la lumière émise par le groupe de lentilles d'imagerie. Au moyen du module d'imagerie, une couverture de viseur plus grande peut être affichée dans la même région d'imagerie, ce qui améliore efficacement l'expérience de photographie d'un utilisateur.
PCT/CN2019/085609 2018-05-23 2019-05-06 Module d'imagerie, dispositif électronique, procédé de traitement d'image et support d'informations WO2019223521A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201810500609.3A CN110536045A (zh) 2018-05-23 2018-05-23 成像模组、电子设备、图像处理方法和存储介质
CN201820778482.7U CN208386719U (zh) 2018-05-23 2018-05-23 成像模组和电子设备
CN201810500609.3 2018-05-23
CN201820778482.7 2018-05-23

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