WO2024037185A1

WO2024037185A1 - Image acquisition method, electronic device, and computer readable storage medium

Info

Publication number: WO2024037185A1
Application number: PCT/CN2023/102197
Authority: WO
Inventors: 陈嘉伟
Original assignee: Oppo广东移动通信有限公司
Priority date: 2022-08-15
Filing date: 2023-06-25
Publication date: 2024-02-22
Also published as: CN115379116A

Abstract

An image acquisition method, comprising: acquiring an initial position of a second lens group; according to a photographing mode of a camera, adjusting the position of the second lens group to a focusing position corresponding to the photographing mode; when the focusing position is at a first preset position, the camera executing telephoto photographing to output a telephoto image; and when the focusing position is at a second preset position, the camera executing microscopic photographing to output an original image, and a processor executing image recovery processing on the original image to output a microscopic image.

Description

Image acquisition method, electronic device and computer-readable storage medium

priority information

This application requests the priority and rights of the patent application with patent application number 2022109755637, which was submitted to the State Intellectual Property Office of China on August 15, 2022, and its full text is incorporated herein by reference.

Technical field

The present application relates to the field of imaging technology, and more specifically, to an image acquisition method, electronic device and computer-readable storage medium.

Background technique

In recent years, with the continuous development of electronic devices such as mobile phones, tablets, and laptops, users expect more and more functions from electronic devices. For example, users hope that electronic devices can simultaneously achieve telephoto shooting, microscopic shooting and other shooting functions. Current electronic devices can be equipped with multiple cameras to meet different shooting functions.

Contents of the invention

Embodiments of the present application provide an image acquisition method, electronic device, and computer-readable storage medium.

The image acquisition method of the camera according to the embodiment of the present application, the camera includes a lens, along the direction from the image side to the object side, the lens includes a first lens group, a second lens group and a third lens group; the image The acquisition method includes: acquiring the initial position of the second lens group; adjusting the position of the second lens group according to the shooting mode of the camera to a focus position corresponding to the shooting mode; and when the focus position is in the first In the case of the preset position, the camera performs telephoto shooting to output a telephoto image; and in the case where the focus position is in the second preset position, the camera performs microscopic photography to output the original image, and processes The processor performs image restoration processing on the original image to output a microscopic image.

The electronic device in the embodiment of the present application includes a camera, a processor and a driver. The camera includes a lens, which includes a first lens group, a second lens group and a third lens group in the direction from the image side to the object side; the processor is used to obtain the initial image of the second lens group. position; the driver is used to drive the second lens group to the focus position corresponding to the shooting mode according to the shooting mode of the camera; when the focus position is at the first preset position, the The camera performs telephoto shooting to output a telephoto image; when the focus position is at the second preset position, the camera performs microscopic shooting to output an original image, and the processor is also used to process the original image. Image performs image restoration processing to output a microscopic image.

The computer-readable storage medium storing a computer program according to the embodiment of the present application, when the computer program is executed by one or more processors, implements the following image acquisition method: acquires the initial position of the second lens group; according to The shooting mode of the camera adjusts the position of the second lens group to the focus position corresponding to the shooting mode; when the focus position is at the first preset position, the camera performs telephoto shooting to Output a telephoto image; and the focus position is at the In the case of two preset positions, the camera performs microscopic photography to output an original image, and the processor performs image restoration processing on the original image to output a microscopic image.

The image acquisition method, electronic device and computer-readable storage medium of the embodiments of the present application adjust the initial position of the second lens group so that the camera can focus in different shooting modes, so that the electronic device can complete long-distance shooting in one camera. The focus shooting function and microscopic shooting function reduce the space occupied by the camera, simplify the overall structure of electronic equipment, and reduce production costs.

Additional aspects and advantages of embodiments of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of the application.

Description of drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

Figure 1 is a schematic flowchart of an image acquisition method in some embodiments of the present application;

Figure 2 is a schematic structural diagram of an electronic device according to certain embodiments of the present application;

Figure 3 is a schematic structural diagram of a camera in an electronic device according to certain embodiments of the present application;

Figure 4 is a schematic structural diagram of a camera in an electronic device according to certain embodiments of the present application;

Figure 5 is a schematic structural diagram of a camera in an electronic device according to certain embodiments of the present application;

Figure 6 is a schematic flowchart of an image acquisition method according to certain embodiments of the present application;

Figure 7 is a schematic structural diagram of a camera in an electronic device according to certain embodiments of the present application;

Figure 8 is a schematic flowchart of an image acquisition method according to certain embodiments of the present application;

Figure 9 is a schematic flowchart of an image acquisition method according to certain embodiments of the present application;

Figure 10 is a schematic flowchart of an image acquisition method according to certain embodiments of the present application;

Figure 11 is a schematic diagram of the principle of acquiring microscopic images in the image acquisition method of some embodiments of the present application;

Figure 12 is a schematic structural diagram of a camera in an image acquisition method according to some embodiments of the present application;

Figure 13 is a schematic diagram of the connection state between a computer-readable storage medium and a processor in some embodiments of the present application.

Detailed ways

The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of the present application and cannot be understood as limiting the embodiments of the present application.

In the description of the embodiments of the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, features defined as “first” and “second” may explicitly or implicitly include one or more of the described features. In the description of the embodiments of this application, “plurality” means two One or more than two, unless otherwise expressly and specifically limited.

In recent years, with the continuous development of electronic devices such as mobile phones, tablets, and laptops, users expect more and more functions from electronic devices. For example, users hope that electronic devices can simultaneously achieve telephoto shooting, microscopic shooting and other shooting functions. Current electronic devices can be equipped with multiple cameras to meet different shooting functions. However, installing multiple cameras will cause the overall structure of the electronic device to be complex, occupy a large space, and increase production costs. To solve this problem, the present application provides an image acquisition method, an electronic device 100 (shown in FIG. 2 ), and a computer-readable storage medium 200 (shown in FIG. 13 ).

Please refer to Figures 1 to 3. The image acquisition method according to the embodiment of the present application includes:

01: Get the initial position of the second lens group G2;

03: Adjust the position of the second lens group G2 according to the shooting mode of the camera 10 to the focus position corresponding to the shooting mode;

05: When the focus position is at the first preset position, the camera 10 performs telephoto shooting to output a telephoto image; and

07: With the focus position at the second preset position, the camera 10 performs microscopic photography to output the original image, and the processor 20 performs image restoration processing on the original image to output the microscopic image.

In some embodiments, electronic device 100 includes camera 10, driver 12, and one or more processors 20. The camera 10 includes a lens 11. The lens 11 includes a first lens group G1, a second lens group G2 and a third lens group G3 in the direction from the image side to the object side. The processor 20 is used to execute the image acquisition method in 01 and part of the image acquisition method in 07, the driver 12 is used to execute the image acquisition method in 03, and the camera 10 is used to execute the image acquisition method in 05 and part of the image acquisition in 07. method. That is, the processor 20 is used to obtain the initial position of the second lens group G2. The driver 12 is used to drive the second lens group G2 to move to a focus position corresponding to the shooting mode according to the shooting mode of the camera 10 . When the focus position is at the first preset position, the camera 10 performs telephoto photography to output a telephoto image; when the focus position is at the second preset position, the camera 10 performs microscopic photography to output an original image. The processor 20 is also used to perform image restoration processing on the original image to output a microscopic image.

In some embodiments, the electronic device 100 may be a mobile phone, a tablet, a laptop, a personal computer, a smart watch, a car, a drone, a robot, or other device with a shooting function. The embodiment of the present application is explained by taking the electronic device 100 as a mobile phone as an example. It should be noted that the specific form of the electronic device 100 is not limited to a mobile phone.

Please refer to Figures 3 and 4. In some embodiments, the lens 11 includes a plurality of lenses 113 arranged sequentially along the optical axis. The plurality of lenses 113 can constitute more than one lens group, and each lens group can include a or more than one lens 113. In the embodiment of the present application, the plurality of lenses 113 can constitute three lens groups (the first lens group G1, the second lens group G2, and the third lens group G3). Wherein, in the direction from the image side to the object side, the second lens group G2 is located between the first lens group G1 and the third lens group G3. The driver 12 can drive the second lens group G2, and then adjust the position of the second lens group G2 to the focus position corresponding to the shooting mode, so that the camera 10 focuses in different shooting modes. In some embodiments, if the lens groups formed by the plurality of lenses 113 are greater than or equal to three, the driver 12 can move one or more lenses between the lens group closest to the image side and the lens group closest to the object side. The position of the group is adjusted to the focus position corresponding to the shooting mode, so that the camera 10 can operate in different shooting modes. Focus. For example, the plurality of lenses 113 constitute four lens groups (a first lens group G1, a second lens group G2, a third lens group G3, and a fourth lens group G4 (not shown)). Wherein, in the direction from the image side to the object side, the second lens group G2 and the third lens group G3 are located between the first lens group G1 and the fourth lens group G4. The driver 12 can adjust the position of the second lens group G2 and/or the third lens group G3 to the focus position corresponding to the shooting mode, so that the camera 10 focuses in different shooting modes. At this time, the driver 12 may drive the second lens group G2 and the third lens group G3 synchronously, or may drive the second lens group G2 and the third lens group G3 separately.

Please refer to FIG. 4 again. In some embodiments, the number of lenses 113 in the lens 11 is not limited. Optionally, the lens 11 includes 4 lenses 113 , or the lens 11 assembly includes 5 lenses 113 , or the lens 11 assembly includes 6 lenses 113 . In the embodiment of the present application, the number of lenses 113 in the lens 11 is four. Among them, in the direction from the object side to the image side of the camera 10, the lens 11 sequentially includes a cover plate 112, an aperture STO, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, and a filter. 114 and image sensor 13. In one embodiment, the first lens group G1 includes the first lens L1, the second lens group G2 includes the second lens L2 and the third lens L3, the third lens group G3 includes the fourth lens L4, and the driver 12 moves the second lens The positions of L2 and the third lens L3 are adjusted to the focus position corresponding to the shooting mode; in another embodiment, the first lens group G1 includes the first lens L1 and the second lens L2, and the second lens group G2 includes the third lens L3, the third lens group G3 includes the fourth lens L4; in another embodiment, the first lens group G1 includes the first lens L1, the second lens group G2 includes the second lens L2, and the third lens group G3 includes the third lens L3. Lens L3 and fourth lens L4.

In some embodiments, the lens 113 can be a spherical lens, an aspherical lens, a free-form lens, etc., which is not limited here. The lens 113 is made of plastic, glass, or a mixed material of plastic and glass, which is not limited here.

In certain embodiments, the diaphragm STO may be an aperture diaphragm or a field diaphragm. The embodiment of the present application is explained by taking the diaphragm STO as an aperture diaphragm as an example. The diaphragm STO can be disposed between the first lens L1 and the object 111 , or on the surface of any one lens 113 , or between any two lenses 113 . In the embodiment of the present application, the aperture STO is disposed between the first lens L1 and the object 111 to control the amount of light entering and improve the imaging effect. Among them, the object side refers to the side where the object 111 is located, and the image side refers to the side where the image sensor 13 images.

In some embodiments, the filter 114 is disposed between the fourth lens L4 and the image sensor 13 for filtering out light of a specific wavelength. In some embodiments, filter 114 is an infrared filter. When the camera 10 is used for imaging, the light emitted or reflected by the object 111 enters the camera 10 from the object side direction, and passes through the first lens L1, the second lens L2, the third lens L3, the fourth lens L4 and the filter in sequence. 114, and finally converge on the imaging surface 115 of the image sensor 13.

In some embodiments, image sensor 13 may be a solid-state image sensor 13. The image sensor 13 includes a charge-coupled device (CCD), a metal-oxide semiconductor device (Complementary Metal-Oxide Semiconductor, CMOS) and other optoelectronic devices. The image sensor 13 uses the photoelectric conversion function of the photoelectric device to convert the light image on the imaging surface 115 into an electrical signal that is proportional to the light image.

Referring to Figure 3, in some embodiments, the driver 12 may include an electric driver, an electromagnetic driver, a hydraulic driver, Drives such as pneumatic drives are not limited here. The driver 12 is connected to the second lens group G2. It should be noted that the connection between the driver 12 and the second lens group G2 may be a direct connection between the driver 12 and the second lens group G2, or the driver 12 may be indirectly connected to the second lens group G2 through other structures. When the driver 12 is directly connected to the second lens group G2, the connection method between the driver 12 and the second lens group G2 may be snap connection, screw connection, welding, etc. The direct connection between the driver 12 and the second lens group G2 is beneficial to simplifying the structure of the camera 10 and reducing production costs. When the driver 12 and the second lens group G2 are indirectly connected to the second lens group G2 through other structures, the driver 12 and the second lens group G2 may be connected through structures such as reeds, guide rods, and suspension wires. The indirect connection between the driver 12 and the second lens group G2 through other structures can reduce the layout difficulty of the driver 12 in the camera 10, avoid interference between the driver 12 and other devices in the camera 10, and improve the stability of driving the second lens group G2.

Specifically, after the processor 20 obtains the initial position of the second lens group G2, the processor 20 can control the driver 12 according to the shooting mode of the camera 10 to adjust the position of the second lens group G2 to the focus position corresponding to the shooting mode, so as to achieve The camera 10 focuses in different shooting modes. Wherein, when the focus position is at the first preset position, the processor 20 controls the camera 10 to perform telephoto shooting to output a telephoto image. When the focus position is at the second preset position, the processor 20 controls the camera 10 to perform microscopic photography to output the original image, and then the processor 20 performs image restoration processing on the original image to output the microscopic image. The driver 12 is used to drive the second lens group G2 to move to a focus position corresponding to the shooting mode according to the shooting mode of the camera 10 . It can be understood that the distance between the second lens group G2 and the image sensor 13 when it is in the initial position is different from the distance between the second lens group G2 and the image sensor 13 when it is in the focus position. In other words, the focal length of the camera 10 is different when the second lens group G2 is in the initial position and the focus position.

Referring to FIG. 5 , in some embodiments, the camera 10 may further include a housing 30 . The housing 30 is used to accommodate the lens 11 and the driver 12 . In the embodiment of the present application, the lens 11 and the driver 12 are both fixed in the housing 30 . Of course, in other embodiments, the driver 12 can also be fixed outside the housing 30 . It should be noted that each component in Figure 5 is only an exemplary component, and the actual shape, size, size and position information of the components are not limited to those listed in Figure 5 .

The image acquisition method and electronic device 100 in this application adjust the initial position of the second lens group G2 so that the camera 10 can focus in different shooting modes, and the electronic device 100 can complete the telephoto shooting function in one camera 10 and microscopic shooting function, reducing the space occupied by the camera 10, simplifying the overall structure of the electronic device 100, and reducing production costs.

In addition, the image acquisition method and electronic device 100 adjust the initial position of the second lens group G2 so that the camera 10 can focus in different shooting modes, thereby avoiding the problem of a large focus stroke caused by the overall movement of the lens 11 when the camera 10 focuses. , reducing the space occupied by the camera 10 in the electronic device 100, and improving the stability of shooting by the camera 10.

Please refer to Figure 6 and Figure 7. In some embodiments, 01: Obtain the initial position of the second lens group G2, including:

011: Obtain the magnetic field strength of the magnet 15 induced by the Hall sensor 14; and

013: Determine the initial position according to the magnetic field intensity and the preset mapping relationship, where the preset mapping relationship is the corresponding relationship between the initial position and the magnetic field intensity.

Please refer to FIG. 2 , the camera 10 also includes a Hall sensor 14 and a magnet 15 . Hall sensor 14 is used to sense the magnet 15 Magnetic field strength. One or more processors 20 are also used to execute the image acquisition methods in 011 and 013. That is, the processor 20 is also used to obtain the magnetic field intensity of the induction magnet 15 of the Hall sensor 14; and determine the initial position according to the magnetic field intensity and the preset mapping relationship, where the preset mapping relationship is the corresponding relationship between the initial position and the magnetic field intensity.

Specifically, in some embodiments, the Hall sensor 14 may be disposed on the second lens group G2, and correspondingly, the magnet 15 is disposed on the driver 12 or the housing 30. The processor 20 obtains the initial position of the second lens group G2 according to the magnetic field intensity sensed by the Hall sensor 14 . Of course, in other implementations, the Hall sensor 14 can be provided on the driver 12 and the magnet 15 can be provided on the second lens group G2.

In some embodiments, the Hall sensor 14 is disposed on the second lens group G2. When the magnet 15 is disposed on the driver 12 or the housing 30, the Hall sensor 14 is in contact with or opposite to the magnet 15. The Hall sensor 14 can detect the magnetic field strength of the magnet 15 and transmit the detected magnetic field strength to the processor 20. The processor 20 determines the magnetic field strength transmitted by the Hall sensor 14 and the preset magnetic field strength of the Hall sensor 14. The mapping relationship of the initial position of the second lens group G2 determines the position of the second lens group G2. It should be noted that when the driver 12 drives the second lens group G2 to move, the Hall sensor 14 is used to sense the magnetic field intensity of the magnet 15 provided on the driver 12 or the housing 30 . When the distance between the Hall sensor 14 and the magnet 15 decreases, the Hall sensor 14 detects the magnetic field generated by the magnet 15, and as the distance between the Hall sensor 14 and the magnet 15 decreases, the Hall sensor 14 detects The intensity of the magnetic field gradually increases.

Please refer to Figures 7 and 8. In some embodiments, 03: Adjust the position of the second lens group G2 according to the shooting mode of the camera 10 to the focus position corresponding to the shooting mode, including:

031: Get the distance between object 111 and camera 10;

033: Determine the shooting mode of camera 10 according to the distance;

035: When the shooting mode is the telephoto mode, the driver 12 drives the second lens group G2 to move the first stroke amount so that the focus position is at the first preset position; and

037: When the shooting mode is the microscopic mode, the driver 12 drives the second lens group G2 to move the second stroke amount so that the focus position is at the second preset position.

Please refer to Figure 2, the processor 20 is also used to obtain the distance between the object 111 and the camera 10, and determine the shooting mode of the camera 10 based on the distance; when the shooting mode is the telephoto mode, the driver 12 drives the second lens group G2 moves a first stroke amount so that the initial position is at the first preset position; when the shooting mode is the microscopic mode, the driver 12 drives the second lens group G2 to move a second stroke amount so that the initial position is at the second Default position.

In some embodiments, the shooting mode of the camera 10 may be determined by the distance between the object 111 and the camera 10 . Specifically, the processor 20 obtains the distance between the object 111 and the camera 10, and determines the shooting mode of the camera 10 based on the distance. For example, when the distance between the object 111 and the camera 10 is 1 m to 3 m, the shooting mode of the camera 10 is the telephoto shooting mode; when the distance between the object 111 and the camera 10 is 5 mm to 3 cm, the camera 10 The shooting mode of 10 is microscopic shooting mode.

In some embodiments, the shooting mode of the camera 10 may also be directly selected by the user. When the user turns on the camera 10 for shooting, the user can select the shooting mode of the camera 10 by clicking on the shooting mode option. For example, when the user selects the telephoto mode, the shooting mode of the camera 10 changes to the telephoto shooting mode; when the user selects the microscopic mode, the shooting mode of the camera 10 changes to the microscopic shooting mode.

Specifically, when the shooting mode of the camera 10 is the telephoto shooting mode, the driver 12 can drive the second lens group G2 to move the first stroke amount from the initial position along the optical axis direction, so that the second lens group G2 is located in the telephoto shooting mode. The focus position is at the first preset position; when the shooting mode of the camera 10 is the microscopic shooting mode, the driver 12 drives the second lens group G2 to move a second stroke amount from the initial position along the optical axis direction, so that the second lens group The focus position of group G2 is at the second preset position.

Among them, the direction of the optical axis includes the forward direction of the optical axis and the reverse direction of the optical axis. The forward direction of the optical axis is the direction pointed by the image sensor 13 to the lens 113 (shown in FIG. 4 ). The optical axis is reversed, that is, the lens 113 points in the direction of the image sensor 13 . The driver 12 driving the second lens group G2 to move along the optical axis to the first preset position includes the driver 12 driving the second lens group G2 to move forward along the optical axis to the first preset position, or the driver 12 driving the second lens group G2 Move backward along the optical axis to the first preset position. The driver 12 driving the second lens group G2 to move along the optical axis to the second preset position includes the driver 12 driving the second lens group G2 to move forward along the optical axis to the second preset position, or the driver 12 driving the second lens group G2 Move in the opposite direction along the optical axis to the second preset position.

In some embodiments, the first preset position and the second preset position are different. The first preset position and the second preset position are both located between the first lens group G1 and the third lens group G3. The first preset position and the second preset position may be a fixed value, or the first preset position and the second preset position may be an area. The first preset position corresponds to the focus position of the telephoto shooting mode, and the second preset position corresponds to the focus position of the microscopic shooting mode.

In some embodiments, the camera 10 further includes a third preset position. The third preset position is located between the first preset position and the second preset position. The driver 12 can also drive the second lens group G2 to adjust the position of the second lens group G2 to the third preset position. When the second lens group G2 is in the third preset position, the camera is in other shooting modes. Among them, other shooting modes are different from telephoto shooting mode and microscopic shooting mode. It should be noted that in some implementations, there may be multiple third preset positions, and the multiple third preset positions may correspond to different shooting modes or the same shooting mode.

In some embodiments, when the shooting mode is the telephoto mode and the initial position is at the first preset position, the first stroke amount is 0; when the shooting mode is the telephoto mode and the initial position is at the second preset position Assuming the position, the first stroke amount is 300 μm to 600 μm.

Specifically, please refer to FIG. 7 . When the shooting mode of the camera 10 is the telephoto shooting mode and the initial position of the second lens group G2 is at the first preset position, the driver 12 drives the second lens group G2 to move. One stroke amount is 0, that is, the second lens group G2 may not move along the optical axis direction; when the shooting mode of the camera 10 is the telephoto mode, and the initial position of the second lens group G2 is at the second preset position , the driver 12 drives the second lens group G2 to move along the optical axis direction for a first stroke amount of 300 μm to 600 μm. At this time, the second lens group G2 moves forward along the optical axis. It should be noted that in some embodiments , when the shooting mode of the camera 10 is the telephoto shooting mode, and the initial position of the second lens group G2 is at the first preset position, the driver 12 can drive the second lens group G2 within the range of the first preset position. Make adjustments within the camera 10 to make the focus of the camera 10 clearer in the telephoto shooting mode and improve the shooting quality.

In some embodiments, when the first lens group G1 is located at the first preset position, the field of view angle of the camera 10 can be any value between 28° and 46°. Correspondingly, the focal length of the camera 10 is Any value between 50mm and 85mm.

In some embodiments, when the shooting mode is the microscopic mode and the initial position is at the first preset position, the second stroke amount is 300 μm to 600 μm; when the shooting mode is the microscopic mode and the initial position is at the first preset position In the case of the second preset position, the second stroke amount is 0.

Specifically, please refer to FIG. 7 again. When the shooting mode of the camera 10 is the microscopic shooting mode and the initial position of the second lens group G2 is at the first preset position, the driver 12 drives the second lens group G2 along the light beam. The second stroke amount of the movement in the axial direction is 300 μm to 600 μm. At this time, the second lens group G2 moves in the reverse direction along the optical axis. When the shooting mode of the camera 10 is the microscopic shooting mode, and the initial position of the second lens group G2 is at the second preset position, the driver 12 drives the second lens group G2 to move the second stroke amount to 0, that is, The second lens group G2 may not move along the optical axis direction. It should be noted that in some embodiments, when the shooting mode of the camera 10 is the microscopic shooting mode and the initial position of the second lens group G2 is at the second preset position, the driver 12 can drive the second lens. Group G2 adjusts within the range of the second preset position to make the focus of the camera 10 clearer in the microscopic shooting mode and improve the shooting quality.

In some embodiments, when the second lens group G2 is located at the second preset position, the optical magnification of the camera 10 is 0.2 times to 0.6 times.

In some embodiments, when the driver 12 drives the second lens group G2 to move, the relative positions of the lenses 113 in the second lens group G2 along the optical axis remain unchanged, that is, the driver 12 treats the second lens group G2 as a The whole body is driven along the optical axis. For example, the driver 12 drives the first lens L1 in the second lens group G2 to move 50 μm along the optical axis toward the object 111. Correspondingly, the second lens L2 in the second lens group G2 also moves toward the object 111 along the optical axis. move 50μm in the direction.

Please refer to Figure 2 and Figure 9. In some embodiments, 07: The processor 20 performs image restoration processing on the original image to output a microscopic image, including:

071: Perform coded image processing on the original image to obtain a coded image with the same point spread function; and

073: Input the encoded image into the preset neural network model and perform convolution and deconvolution operations to output the microscopic image.

In some embodiments, one or more processors 20 are also used to execute the image acquisition methods in 071 and 073. That is, the processor 20 is also used to perform coded image processing on the original image to obtain a coded image with the same point spread function; input the coded image into a preset neural network model to perform convolution and deconvolution operations to output a microscopic image .

Please combine Figure 7 and Figure 10. When one or more processors 20 control the camera 10 to perform microscopic imaging, the camera 10 captures and obtains the original image (shown in (b) in Figure 10). However, at this time, the original image is obtained. There is a large aberration between the original image and the ideal image (shown in (a) in Figure 10), that is, the edges of the original image obtained by the camera 10 are more blurred, and the field of view performance is poorer. Difference. Therefore, the processor 20 in the electronic device 100 (shown in FIG. 2 ) is also used to perform encoded image processing on the original image to obtain an encoded image with the same point spread function; input the encoded image into a preset neural network model to perform convolution Product and deconvolution operations are performed to output microscopic images with better field of view performance.

Specifically, please combine Figure 11 and Figure 12. First, perform coded image processing on the original image (shown in (a) in Figure 11) to obtain a coded image with the same point spread function (shown in (b) in Figure 11 ); establish a mapping relationship between the point spread function and the neural network; perform image signal processing on the encoded image (shown in (c) in Figure 11) to output a microscopic image (shown in (d) in Figure 11). It should be noted that in some embodiments, the encoded image can be obtained by arranging a phase plate 116, and grinding and tempering the phase plate 116 to obtain an encoded image with the same point spread function. Specifically, the camera 10 may further include a phase plate 116 located on the imaging optical path. When the processor 20 controls the camera 10 to execute the microscopic photography mode, the driver 12 drives the second lens group G2 to move the second stroke amount so that the focus position is at the second preset position, and the camera 10 performs shooting so that the light passes through The phase plate 116 and the lens 11 are then imaged on the image sensor 13 to obtain an encoded image. Among them, the light entering the camera 10 can be phase-coded through the phase plate 116, so that the camera 10 can perform depth-of-field extension wavefront coding imaging of the object 111, which can not only greatly increase the depth of field of the camera 10, but also can correct Defocus aberration caused by installation errors, temperature changes, etc., to improve the imaging performance of the camera 10 .

In another embodiment, the coded image can also be obtained by setting an independent external device, that is, setting an external device in front of the lens 11 of the camera 10 to perform tempering processing on the coded image, thereby obtaining coding with the same point spread function. image.

Please refer to Figure 12 again. In some embodiments, the camera further includes a second driver 16. The second driver 16 drives the phase plate 116 to rotate, so that the phase plate 116 selectively blocks or opens the imaging light path. By arranging the phase plate 116, when the light reflected by the object 111 enters the camera 10 with the phase plate 116, an intermediate blurred image can be formed on the image sensor 13, and the blur degree of the image formed within a large depth of field range is ensured to be consistent, and then , taking advantage of the characteristics of consistent blur levels in the middle, using various algorithms such as frequency domain or spatial domain to restore their images, so as to obtain the final clear image.

In some embodiments, image signal processing includes a neural network model, that is, image signal processing is data processed by a neural network model. In specific applications, the encoded image is processed by image signal processing, that is, after being processed by a recovery algorithm, the output microscopic image. Among them, the neural network model can be a recovery algorithm, a convolution and deconvolution algorithm, or an AI algorithm, which is not limited here.

Referring to Figures 1, 2, 3, 8 and 13, embodiments of the present application also provide a computer-readable storage medium 200 with a computer program 202 stored thereon. When the program is executed by the processor 20, the image acquisition method of any of the above embodiments is implemented.

For example, when the program is executed by the processor 20, the following image acquisition method is implemented:

01: Get the initial position of the second lens group G2;

07: With the focus position at the second preset position, the camera 10 performs microscopic shooting to output the original image and process The processor 20 performs image restoration processing on the original image to output a microscopic image.

For another example, when the program is executed by the processor 20, the following image acquisition method is implemented:

031: Get the distance between object 111 and camera 10;

033: Determine the shooting mode of camera 10 according to the distance;

It should be noted that the explanations of the image acquisition method and electronic device 100 in the embodiment of the present application in the foregoing embodiments are also applicable to the computer-readable storage medium 200 of the embodiment of the present application, and will not be further described here.

In the computer-readable storage medium 200 in this application, by adjusting the initial position of the second lens group G2, the camera 10 can focus in different shooting modes, and the electronic device 100 can complete telephoto shooting in one camera 10 The function and microscopic shooting function reduce the space occupied by the camera 10, simplify the overall structure of the electronic device 100, and reduce production costs.

It will be appreciated that computer program 202 includes computer program code. Computer program code can be in the form of source code, object code, executable file or some intermediate form, etc. Computer-readable storage media can include: any entity or device that can carry computer program code, recording media, USB flash drives, mobile hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM, Read-Only Memory), random access memory Access memory (RAM, Random Access Memory), and software distribution media, etc. The processor can be a central processing unit, or other general-purpose processor, digital signal processor (Digital Signal Processor, DSP), application specific integrated circuit (Application Specific Integrated Circuit, ASIC), field programmable gate array (Field-Programmable Gate) Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "an example," "specific examples," or "some examples" or the like means that specific features are described in connection with the embodiment or example. , structures, materials or features are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification unless they are inconsistent with each other.

Any process or method descriptions in flowcharts or otherwise described herein may be understood to represent modules, segments, or portions of code that include one or more executable instructions for implementing the specified logical functions or steps of the process. , and the scope of the preferred embodiments of the present application includes additional implementations in which functions may be performed out of the order shown or discussed, including in a substantially simultaneous manner or in the reverse order, depending on the functionality involved, which shall It should be understood by those skilled in the technical field to which the embodiments of this application belong.

Although the embodiments of the present application have been shown and described above, it can be understood that the above-mentioned embodiments are illustrative and cannot be understood as limitations of the present application. Those of ordinary skill in the art can make modifications to the above-mentioned embodiments within the scope of the present application. The embodiments are subject to changes, modifications, substitutions and variations.

Claims

An image acquisition method for a camera, wherein the camera includes a lens, along the direction from the image side to the object side, the lens includes a first lens group, a second lens group and a third lens group, including:

Obtain the initial position of the second lens group;

Adjust the position of the second lens group to the focus position corresponding to the shooting mode according to the shooting mode of the camera;

When the focus position is at the first preset position, the camera performs telephoto shooting to output a telephoto image; and

When the focus position is at the second preset position, the camera performs microscopic photography to output an original image, and the processor performs image restoration processing on the original image to output a microscopic image.
The image acquisition method according to claim 1, wherein the camera further includes a Hall sensor and a magnet, and acquiring the initial position of the second lens group includes:

Obtain the magnetic field strength of the magnet sensed by the Hall sensor; and

The initial position is determined according to the magnetic field intensity and a preset mapping relationship, where the preset mapping relationship is the corresponding relationship between the initial position and the magnetic field intensity.
The image acquisition method according to claim 1, wherein the camera further includes a driver, and the step of adjusting the position of the second lens group to a focus position corresponding to the shooting mode according to the shooting mode of the camera includes: :

Obtain the distance between the object and the camera;

Determine the shooting mode of the camera according to the distance;

When the shooting mode is the telephoto mode, the driver drives the second lens group to move a first stroke amount so that the focus position is at the first preset position; and

When the shooting mode is the microscopic mode, the driver drives the second lens group to move a second stroke amount so that the focus position is at the second preset position.
The image acquisition method according to claim 3, wherein,

When the shooting mode is the telephoto mode and the initial position is at the first preset position, the first stroke amount is 0; and

When the shooting mode is the telephoto mode and the initial position is at the second preset position, the first stroke amount is 300 μm˜600 μm.
The image acquisition method according to claim 3, wherein,

When the shooting mode is a microscopic mode and the initial position is at the first preset position, the second stroke amount is 300 μm˜600 μm; and

When the shooting mode is the microscopic mode and the initial position is at the second preset position, the second stroke amount is 0.
The image acquisition method according to claim 1, wherein the processor performs image restoration processing on the original image to output a microscopic image, including:

Perform coded image processing on the original image to obtain a coded image with the same point spread function; and

The encoded image is input into the preset neural network model to perform convolution and deconvolution operations to output a microscopic image.
An electronic device, including:

The camera includes a lens along the direction from the image side to the object side. The lens includes a first lens group, a second lens group and a third lens group;

A processor configured to obtain the initial position of the second lens group; and

A driver configured to drive the second lens group to a focus position corresponding to the shooting mode according to the shooting mode of the camera;

When the focus position is at the first preset position, the camera performs telephoto shooting to output a telephoto image; when the focus position is at the second preset position, the camera performs microscopy Capture to output an original image, and the processor is further configured to perform image restoration processing on the original image to output a microscopic image.
The electronic device according to claim 7, wherein the camera further includes:

magnet;

Hall sensor for sensing the magnetic field strength of the magnet;

The processor is also configured to obtain the magnetic field intensity of the magnet induced by the Hall sensor; and determine the initial position according to the magnetic field intensity and a preset mapping relationship, wherein the preset mapping relationship is the initial position. Correspondence between position and magnetic field strength.
The electronic device according to claim 7, wherein the camera further includes a driver;

The processor is also used to obtain the distance between the object and the camera, and determine the shooting mode of the camera according to the distance; when the shooting mode is the telephoto mode, the driver drives the The second lens group moves a first stroke amount so that the initial position is at a first preset position; when the shooting mode is a microscopic mode, the driver drives the second lens group to move a second stroke amount amount so that the initial position is at the second preset position.
The electronic device according to claim 9, wherein when the shooting mode is a telephoto mode and the initial position is at the first preset position, the first stroke amount is 0; When the shooting mode is the telephoto mode and the initial position is at the second preset position, the first stroke amount is 300 μm˜600 μm.
The electronic device according to claim 9, wherein when the shooting mode is a microscopic mode and the initial position is at the first preset position, the second stroke amount is 300 μm˜600 μm, So that the initial position is at the second preset position; when the shooting mode is the microscopic mode and the initial position is at the second preset position, the second stroke amount is 0.
The electronic device according to claim 7, wherein the processor is further configured to perform encoded image processing on the original image to obtain an encoded image with the same point spread function; and input the encoded image into a preset image Operations are performed in the recovery algorithm to output the microscopic image.
A computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, an image acquisition method of a camera is implemented. The camera includes a lens, along the direction from the image side to the object side. , the lens includes a first lens group, a second lens group and a third lens group, and the image acquisition method includes:

Obtain the initial position of the second lens group;

Adjust the position of the second lens group to the focus position corresponding to the shooting mode according to the shooting mode of the camera;

When the focus position is at the first preset position, the camera performs telephoto shooting to output a telephoto image; and

When the focus position is at the second preset position, the camera performs microscopic photography to output an original image, and the processor performs image restoration processing on the original image to output a microscopic image.
The computer-readable storage medium according to claim 13, wherein the camera further includes a Hall sensor and a magnet, and obtaining the initial position of the second lens group includes:

Obtain the magnetic field strength of the magnet sensed by the Hall sensor; and

The initial position is determined according to the magnetic field intensity and a preset mapping relationship, where the preset mapping relationship is the corresponding relationship between the initial position and the magnetic field intensity.
The computer-readable storage medium according to claim 13, wherein the camera further includes a driver that adjusts the position of the second lens group to a focus position corresponding to the shooting mode according to the shooting mode of the camera. ,include:

Obtain the distance between the object and the camera;

Determine the shooting mode of the camera according to the distance;

When the shooting mode is the telephoto mode, the driver drives the second lens group to move a first stroke amount so that the focus position is at the first preset position; and

When the shooting mode is the microscopic mode, the driver drives the second lens group to move a second stroke amount so that the focus position is at the second preset position.
The computer-readable storage medium of claim 15, wherein:

When the shooting mode is the telephoto mode and the initial position is at the first preset position, the first stroke amount is 0; and

When the shooting mode is the telephoto mode and the initial position is at the second preset position, the first stroke amount is 300 μm˜600 μm.
The computer-readable storage medium of claim 15, wherein:

When the shooting mode is a microscopic mode and the initial position is at the first preset position, the second stroke amount is 300 μm˜600 μm; and

When the shooting mode is the microscopic mode and the initial position is at the second preset position, the second stroke amount is 0.
The computer-readable storage medium of claim 13, wherein the processor performs image restoration processing on the original image to output a microscopic image, comprising:

Perform coded image processing on the original image to obtain a coded image with the same point spread function; and

The encoded image is input into the preset neural network model to perform convolution and deconvolution operations to output a microscopic image.