CN115278057A

CN115278057A - Image acquisition method and device, electronic equipment and storage medium

Info

Publication number: CN115278057A
Application number: CN202210731333.6A
Authority: CN
Inventors: 王丹; 王春
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-06-24
Filing date: 2022-06-24
Publication date: 2022-11-01

Abstract

The application discloses an image acquisition method, an image acquisition device, electronic equipment and a storage medium, and belongs to the technical field of camera shooting. The method comprises the following steps: controlling an image sensor to collect a first image and determining a purple boundary range of the first image; determining target adjustment parameters of a target photosensitive unit in the image sensor based on a purple boundary range, a blue light calibration matrix and a red light calibration matrix, wherein the blue light calibration matrix is used for indicating a blue light color difference range, and the red light calibration matrix is used for indicating a red light color difference range; adjusting parameters corresponding to the target photosensitive unit through the target adjustment parameters; and acquiring a second image through the adjusted image sensor.

Description

Image acquisition method and device, electronic equipment and storage medium

Technical Field

The application belongs to the technical field of camera shooting, and particularly relates to an image acquisition method and device, electronic equipment and a storage medium.

Background

At present, when a user shoots through an electronic device, the edge of an image shot by the electronic device may have a purple fringing phenomenon in a highlight scene of the image due to diffraction generated when light is incident on an image sensor in the electronic device.

Generally, the electronic device may remove a portion of short wavelength (i.e., blue) light and a portion of long wavelength (i.e., red) light in the captured image by lens optimization. However, in the above method, although there is a certain help to purple fringing, the perception of other colors is also affected, resulting in a decrease in the color and light sensitivity of the pixel.

Thus, the quality of the image taken by the electronic device is low.

Disclosure of Invention

An object of the embodiments of the present application is to provide a method and an apparatus for adjusting a photosensitive parameter, an electronic device, and a storage medium, which can solve the problem that an image captured by the electronic device has purple fringing.

In a first aspect, an embodiment of the present application provides an image acquisition method, where the image acquisition method includes: controlling an image sensor to collect a first image and determining a purple boundary range of the first image; determining a target adjustment parameter of a target photosensitive unit in the image sensor based on a purple boundary range, a blue light calibration matrix and a red light calibration matrix, wherein the blue light calibration matrix is used for indicating a blue light color difference range, and the red light calibration matrix is used for indicating a red light color difference range; adjusting parameters corresponding to the target photosensitive unit through the target adjustment parameters; and acquiring a second image through the adjusted image sensor.

In a second aspect, an embodiment of the present application provides an image capturing apparatus, including an image sensor, the image sensor including a photosensitive unit; this sensitization parameter adjusting device includes: the device comprises a processing module, a determining module, an adjusting module and an acquiring module. And the processing module is used for controlling the image sensor to collect the first image and determining the purple boundary range of the first image. The determining module is used for determining target adjusting parameters of a target photosensitive unit in the image sensor based on the purple-edge range, the blue-light calibration matrix and the red-light calibration matrix, wherein the blue-light calibration matrix is used for indicating the blue-light color difference range, and the red-light calibration matrix is used for indicating the red-light color difference range. And the adjusting module is used for adjusting the parameters corresponding to the target photosensitive unit through the target adjusting parameters. And the acquisition module is used for acquiring a second image through the adjusted image sensor.

In a third aspect, embodiments of the present application provide an electronic device, which includes a processor and a memory, where the memory stores a program or instructions executable on the processor, and the program or instructions, when executed by the processor, implement the steps of the method according to the first aspect.

In a fourth aspect, embodiments of the present application provide a readable storage medium, on which a program or instructions are stored, which when executed by a processor implement the steps of the method according to the first aspect.

In a fifth aspect, an embodiment of the present application provides a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a program or instructions to implement the method according to the first aspect.

In a sixth aspect, embodiments of the present application provide a computer program product, which is stored in a storage medium and executed by at least one processor to implement the method according to the first aspect.

In the embodiment of the application, the image acquisition device can determine the purple boundary range of the first image according to the first image by acquiring the first image, determine the target adjustment parameters of the target photosensitive unit in the image sensor based on the purple boundary range, the blue light calibration matrix and the red light calibration matrix, and adjust the parameters corresponding to the target photosensitive unit through the target adjustment parameters; and acquiring a second image through the adjusted image sensor. In the scheme, the image acquisition device can adjust the target photosensitive units corresponding to the blue light calibration matrix and the red light calibration matrix according to the purple boundary range, the blue light calibration matrix corresponding to the purple boundary range and the red light calibration matrix corresponding to the purple boundary range by determining the purple boundary range in the first image, so that the second image is acquired through the adjusted image sensor, namely the image acquisition device can calibrate the purple boundary range based on the first image, the blue light calibration matrix and the red light calibration matrix and perform parameter adjustment on the target photosensitive units corresponding to the purple boundary range so as to perform exposure compensation on the target photosensitive units, thereby achieving the purpose of eliminating the purple boundary and improving the quality of images shot by the electronic equipment.

Drawings

FIG. 1 is a diagram illustrating chromatic aberration in a related art system provided by an embodiment of the present application;

fig. 2 is a flowchart of an image acquisition method provided in an embodiment of the present application;

fig. 3 is a schematic structural diagram of an image sensor provided in an embodiment of the present application;

fig. 4 is a schematic diagram illustrating an example of an image capturing method according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a light transmission control layer according to an embodiment of the present disclosure;

fig. 6 is a second schematic view of a structure of a light transmission control layer according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a signal control circuit according to an embodiment of the present disclosure;

fig. 8 is a second schematic structural diagram of a signal control circuit according to an embodiment of the present disclosure;

fig. 9 is a third schematic structural diagram of a signal control circuit according to an embodiment of the present application;

fig. 10 is a fourth schematic structural diagram of a signal control circuit according to an embodiment of the present disclosure;

fig. 11 is a schematic structural diagram of an image capturing device according to an embodiment of the present application;

fig. 12 is a schematic hardware structure diagram of an electronic device according to an embodiment of the present application;

fig. 13 is a second schematic diagram of a hardware structure of an electronic device according to an embodiment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

Terms referred to in the embodiments of the present application will be described below.

(1) Purple border

For a bayer array image sensor, one pixel may be covered by one of R, G, B color filters, and these pixels are then processed by colorization interpolation using the camera internal software to "guess" and interpolate other colors using the peripheral pixel information. The key point of purple fringing is in the color interpolation process, the interpolation process cannot completely reflect the real color distribution, the algorithm in the camera can only 'guess' the real full color distribution through the peripheral pixels, a series of problems such as unclear edges, color interference and the like are caused, and the dazzling purple fringing is also generated. In addition, when an Image Signal Processor (ISP) processes Automatic White Balance (AWB) at the back end, the intensity of R and B signals is further increased, and the red and blue are mixed and strengthened, thereby forming a purple fringing phenomenon.

(2) Diffraction of

Diffraction, a fundamental property of light waves, is based on the theory that light is a wave with a certain wavelength. When light passes through a few small holes or narrow slits, a light wave dispersion phenomenon occurs at the edge of an object. It will be appreciated that in a high contrast backlit scene, when glare passes its edges, diffraction phenomena (coloured edges) are already created and then imaged through the lens. The diffraction phenomenon of red is often more obvious, and the refraction of blue wave band is more obvious. As shown in fig. 1, diffraction is essentially longitudinal chromatic aberration, which is a phenomenon of lens aberration, and the corresponding other phenomenon is lateral chromatic aberration, which is also one of the factors that cause color separation and cause purple fringing.

The method for adjusting the light sensing parameter provided by the embodiment of the present application is described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

At present, with the development of communication technology, functions in electronic devices are increasing, so that a user can meet their own needs through a shooting function in the electronic device, however, the quality of an image shot by the electronic device is generally affected by the environment where the user is located, for example, under a highlight environment, a purple edge phenomenon exists at the edge of a highlight area of the image shot by the electronic device, and similar situations also occur in High-Dynamic Range (HDR), highlight area, and super wide-angle scenes, and the above phenomena are mainly common in security and panoramic cameras; the factors causing purple fringing are: (1) dispersion; (2) diffraction of light generated in the image sensor; the main cause is also caused by chromatic aberration (dispersion) of the lens.

In order to solve the above problems, in the related art, an optimized lens or a purple fringing correction algorithm is generally used to process purple fringing existing in an image, and it can be understood that since purple fringing is often caused by light energy of red and blue bands, a user can correct the purple fringing phenomenon by filtering out a part of short wavelength (blue) and long wavelength (red) when light passes through the lens. Through the purple fringing Correction algorithm, usually there are two purple fringing removing modules in the ISP module, such as C hrmatic a percent Correction (CAC) and depurple, where CAC is a purple fringing caused by correcting chromatic aberration of a lens, an electronic device may process in a raw domain or a yuv domain, and depurple is a purple fringing caused by processing the former without being processed cleanly or due to other reasons. However, in the above lens optimization method, the electronic device filters a part of short and long wavelengths, which is helpful for purple fringing, but the perception of other colors is also affected, resulting in a decrease in the color and light sensitivity of the pixel; the software correction method can increase the calculation amount of the ISP to cause the overall performance to be reduced and the photographing fluency to be influenced on one hand, and on the other hand, the saturation after the software correction treatment is often reduced, so that the photographed image is unnatural. Thus, the quality of the image taken by the electronic device is low.

In the embodiment of the application, the image acquisition device can determine the purple boundary range of the first image according to the first image by acquiring the first image, determine the target adjustment parameters of the target photosensitive unit in the image sensor based on the purple boundary range, the blue light calibration matrix and the red light calibration matrix, and then adjust the parameters corresponding to the target photosensitive unit through the target adjustment parameters; and acquiring a second image through the adjusted image sensor. In the scheme, the image acquisition device can determine the purple boundary range in the first image, so that the blue light calibration matrix corresponding to the purple boundary range and the red light calibration matrix corresponding to the purple boundary range are determined according to the purple boundary range, and then the exposure parameters of the target photosensitive units corresponding to the blue light calibration matrix and the red light calibration matrix can be adjusted, so that the second image is acquired through the adjusted image sensor, namely the image acquisition device can calibrate the purple boundary range based on the first image, the blue light calibration matrix and the red light calibration matrix, and can adjust the parameters of the target photosensitive units corresponding to the purple boundary range, so that the exposure compensation can be performed on the target photosensitive units, the purpose of eliminating the purple boundaries is achieved, and the quality of images shot by the electronic equipment is improved.

The embodiment of the application provides a method for adjusting photosensitive parameters, and fig. 2 shows a flowchart of an image acquisition method provided by the embodiment of the application. As shown in fig. 2, the image capturing method provided in the embodiment of the present application may include steps 201 to 204 described below.

Step 201, an image acquisition device controls an image sensor to acquire a first image and determines a purple boundary range of the first image.

In the embodiment of the application, the image acquisition device can acquire the first image with the light source through the image sensor, and determine the purple boundary range in the first image according to the light source, so that the image acquisition device can adjust the target photosensitive unit corresponding to the purple boundary range in the image sensor according to the purple boundary range in the first image, and the image acquisition device can acquire the second image according to the adjusted image sensor, namely, the purple boundary phenomenon does not exist in the acquired second image.

Alternatively, in the embodiment of the present application, the Light source may be a natural Light source (e.g., light irradiated by the sun or Light irradiated by the moon) or an artificial Light source (e.g., light irradiated by a tungsten lamp, light irradiated by a fluorescent lamp, light irradiated by a Light Emitting Diode (LED)).

Optionally, in this embodiment of the present application, the light source may be a point light source, or a line light source composed of the points, or a surface light source composed of the points.

Alternatively, in the embodiment of the present application, the image sensor may be an all-in-one (e.g., four-in-one, nine-in-one, or sixteen-in-one) image sensor.

For example, in an all-in-one image sensor, taking 4-in-1 as an example, as shown in fig. 3, the physical ordering of the photosensitive pixels in the image sensor arranges 4R photosensitive pixels together, 4 Gb photosensitive pixels together, and 4B photosensitive pixels together.

Optionally, in this embodiment of the application, the arrangement of the pixels in the image sensor may be any of the following: RGGB, RYYB, RGBW, RGBIR. The method can be determined according to actual use requirements, and the embodiment of the application is not limited.

In RGBW, W is a white pixel, and IR in the above-described rgbair is an infrared pixel.

Alternatively, in this embodiment of the application, the first image may be an image (i.e., a RAW image) obtained by the image acquisition device and converted from an optical signal to a digital signal.

Optionally, in this embodiment of the application, before the image capturing device acquires the first image in which the light source exists, the user may perform a first input on the image capturing device to trigger the image capturing device to capture the first image in which the light source exists.

Optionally, in this embodiment of the present application, the first input may be any one of the following: click input, long-press input, sliding input and preset track input; or a physical key combination (e.g., power key and volume key). Specifically, the method may be determined according to actual use requirements, and the embodiment of the present application is not limited.

Step 202, the image acquisition device determines target adjustment parameters of a target photosensitive unit in the image sensor based on the purple-fringed range, the blue light calibration matrix and the red light calibration matrix.

In the embodiment of the present application, the blue calibration matrix is used to indicate a blue color difference range, and the red calibration matrix is used to indicate a red color difference range.

In the embodiment of the application, the image acquisition device can adjust the target adjustment parameters of the target photosensitive unit corresponding to the purple boundary range according to the pre-stored blue light calibration matrix and the pre-stored red light calibration matrix.

It should be noted that, the purple boundary range is that the light source is not in focus on the blue light channel, so that the light source is not a clear point in the blue light channel, but includes a pixel region having a circular ring or a circular spot, that is, a light-sensitive region of the light source on the blue light channel is a circular ring or a circular spot; the red light channel is the same, and will not be described here.

Optionally, in this embodiment of the application, one or more target photosensitive units may be provided.

Optionally, in an embodiment of the present application, the target adjustment parameter may include at least one of: the amount of light entering the pixel and the exposure gain of the pixel.

Optionally, in an embodiment of the present application, the image capturing device includes a lens; before step 202, the image capturing method provided in the embodiment of the present application further includes steps 301 and 302 described below.

Step 301, the image acquisition device controls the image sensor to shoot the target point light source, and G channel image data, B channel image data and R channel image data are obtained.

In the embodiment of the application, the definition of the G channel image data meets the preset condition, and the target point light source is located on the optical axis of the lens.

In the embodiment of the application, after the image acquisition device controls the image sensor to acquire the target point light source, the target point light source can be respectively imaged in a G channel, a B channel and an R channel in the image sensor to obtain image data of corresponding channels.

It should be noted that the G channel, the B channel, and the R channel correspond to the green channel, the blue channel, and the red channel, respectively.

It should be noted that the point light source is a light source located on the axis of the lens in the image sensor, that is, the point light source is parallel to the lens in the image sensor.

Optionally, in this embodiment of the present application, the lens may be any one of the following: wide-angle lenses, ultra-wide-angle lenses, macro lenses, variable focal length lenses, and the like. The method can be determined according to actual conditions, and the embodiment of the application is not limited.

Optionally, in this embodiment of the application, the image acquisition device may obtain G-channel image data, B-channel image data, and R-channel image data of different spot light source positions according to the difference of the spot light source positions.

Optionally, in this embodiment of the application, in a case that the image capture device displays a system desktop, the user may perform a second input on a target application (for example, a camera application) to cause the image capture device to display a shooting preview interface, so that a target point light source may be shot.

Optionally, in this embodiment of the application, the second input may be any one of: click input, long-press input, sliding input and preset track input; or a physical key combination (e.g., power key and volume key). The method can be determined according to actual use requirements, and the embodiment of the application is not limited.

Step 302, the image acquisition device obtains a blue light calibration matrix based on the B channel image data, and obtains a red light calibration matrix based on the R channel image data.

In the embodiment of the application, the image acquisition device can focus the point light source on the G channel to obtain a focus on the G channel, and under the condition that a lens in the image acquisition device has chromatic aberration, the point light source is not in a focusing state on the B channel, so that the light source is not a clear light source pixel area but a pixel area with a circular ring or a circular spot in the B channel, and the image acquisition device can determine the pixel area with the circular ring or the circular spot as a blue light calibration matrix; the R channel is the same, and is not described herein.

Optionally, in this embodiment of the present application, the color difference may be any of: lateral chromatic aberration or longitudinal chromatic aberration.

For example, taking calibration of longitudinal chromatic aberration as an example, as shown in fig. 4, after the point light source is obtained by the image acquisition device, the image acquisition device may perform focusing processing on the point light source on the G channel, that is, find the clearest point on the G channel, and if the point light source is displayed on the B channel, it is not a point but a ring (that is, the point light source has blue chromatic aberration on the B channel), then, the blue pixel point range covered by the ring in the B channel is taken as the area to be corrected.

It should be noted that, the foregoing example only describes the longitudinal chromatic aberration in the blue channel, and if there is a longitudinal chromatic aberration in the red channel in the image sensor, the same method may be used to record the range of the red pixel point corresponding to the ring in the red channel, and in order to avoid repetition, details are not repeated here; the above method is also applicable to lateral chromatic aberration, and the implementation manner is the same, and is not described herein again to avoid repetition.

According to the embodiment of the application, the image acquisition device acquires the target point light source at the G channel image data, the B channel image data and the R channel image data, so that the blue light calibration matrix and the red light calibration matrix are obtained, the image acquisition device can determine the target adjustment parameters of the target photosensitive unit in the image sensor through the blue light calibration matrix and the red light calibration matrix, and the accuracy of image processing of the image acquisition device is improved.

And 203, adjusting the corresponding parameters of the target photosensitive unit by the image acquisition device through the target adjustment parameters.

Optionally, in this embodiment of the application, the image capturing device may adjust a parameter corresponding to the target photosensitive unit by adjusting the light transmittance or adjusting the output voltage of the signal control circuit, so as to remove a purple fringing phenomenon in the image captured by the image capturing device.

And step 204, the image acquisition device acquires a second image through the adjusted image sensor.

Optionally, in this embodiment of the application, the image capturing apparatus may process the captured second image through an ISP, and output image data to a shooting preview interface or a target application program (e.g., an album application program).

The embodiment of the application provides an image acquisition method, wherein an image acquisition device can determine a purple-edge range of a first image according to the first image by acquiring the first image, determine a target adjustment parameter of a target photosensitive unit in an image sensor based on the purple-edge range, a blue light calibration matrix and a red light calibration matrix, and adjust a parameter corresponding to the target photosensitive unit through the target adjustment parameter; and acquiring a second image through the adjusted image sensor. In the scheme, the image acquisition device can determine the purple border range in the first image, so that the blue light calibration matrix corresponding to the purple border range and the red light calibration matrix corresponding to the purple border range are determined according to the purple border range, and then the exposure parameters of the target photosensitive units corresponding to the blue light calibration matrix and the red light calibration matrix can be adjusted, so that the second image is acquired through the adjusted image sensor, namely the image acquisition device can calibrate the purple border range based on the first image, the blue light calibration matrix and the red light calibration matrix, and adjust the parameters of the target photosensitive units corresponding to the purple border range, namely the target photosensitive units can be subjected to exposure compensation, the purpose of eliminating the purple borders is achieved, and the quality of images shot by electronic equipment is improved.

Optionally, in this embodiment of the application, the image capturing device includes a light transmission control layer, the light transmission control layer is disposed corresponding to the image sensor, and the target adjustment parameter includes: a first light transmittance; the step 203 can be specifically realized by the step 203a described below.

Step 203a, the image acquisition device adjusts the light transmittance of the light transmittance control layer corresponding to the target photosensitive unit to be a first light transmittance through the light transmittance control layer.

In this application embodiment, the electronic device may apply a voltage to two ends of the light transmission control layer in the image sensor, so that the light transmission control layer may adjust the light transmittance of the light transmission control layer corresponding to the target photosensitive unit to be the first light transmittance.

In this embodiment, the light transmission control layer may be made of an electrochromic material.

Alternatively, in this embodiment, the electrochromic material may be a redox reaction material or a dispersed liquid crystal material.

For example, taking the light transmission control layer as a dispersed liquid crystal material, as shown in fig. 5 (a), when a voltage is not applied across the image sensor 12, the liquid droplets in the liquid crystal interlayer are in a disordered state, when light enters, the refractive index of the liquid droplets is greatly different from that of the substrate, the light is scattered when passing through the liquid droplets, and the dispersed liquid crystal material 13 is arranged in a disordered manner (i.e., the light cannot enter into a plurality of photosensitive pixels); as shown in fig. 5 (B), when a voltage is applied across the image sensor 12, the dispersed liquid crystal material may adjust the small liquid droplets in the liquid crystal interlayer according to the voltage, so that the refractive indexes of the substrates are relatively close, that is, when light enters, the dispersed liquid crystal material 13 is aligned, so that the light can enter the plurality of photosensitive pixels through the dispersed liquid crystal material 13.

Further illustratively, the voltage may be specifically 0V to 2.8V.

It should be noted that, for clarity of understanding of the image sensor provided in the embodiments of the present application, fig. 4 is a cross-sectional view of the image sensor.

Optionally, in this embodiment of the application, the light transmission control layer may be one or more layers.

Optionally, in this embodiment of the application, the light transmission control layer includes at least one light transmission unit, and each light transmission unit in the at least one light transmission unit is disposed corresponding to the at least one filtering unit.

Optionally, in this embodiment of the application, one light-transmitting unit is correspondingly disposed on each row of the filter units in the at least one filter unit, or one light-transmitting unit is correspondingly disposed on each column of the filter units in the at least one filter unit.

Specifically, the one light-transmitting unit may cover a row of the at least one filtering unit in a row, or the one light-transmitting unit may cover each column of the at least one filtering unit in a column.

Illustratively, as shown in fig. 6 (a), the image sensor includes a 3-row and 2-column photosensitive cell matrix 14, and the light transmission control layer 13 may cover the photosensitive cell matrix 14 completely in a row covering manner, so that each photosensitive cell may correspond to one light transmission control layer, thereby changing the light incoming amount of the corresponding photosensitive cell.

As shown in fig. 6 (B), the image sensor includes a matrix 14 of photosensitive cells with 3 rows and 2 columns, and the light transmission control layer 13 covers the matrix 14 of photosensitive cells completely in a column covering manner, so that each photosensitive cell can correspond to one light transmission control layer, thereby changing the light input amount of the corresponding photosensitive cell.

As another example, as shown in fig. 6 (C), the image sensor includes a 3-row and 2-column photosensitive cell matrix 14, and the light transmission control layer 13 covers the photosensitive cell matrix 14 completely in a block covering manner, so that each photosensitive cell can correspond to one light transmission control layer, thereby changing the light incoming amount of the corresponding photosensitive cell.

Optionally, in an embodiment of the present application, the number of the light transmission control layers is at least two, and the at least two light transmission control layers are stacked.

Illustratively, as shown in (D) of fig. 6, the image sensor includes a 3-row and 2-column photosensitive cell matrix 14, and the light transmission control layer 13 covers the photosensitive cell matrix 14 completely in a column covering manner and a row covering manner, so that each photosensitive cell can correspond to two light transmission control layers, thereby changing the light entering amount of the corresponding photosensitive cell.

In the embodiment of the application, the light transmittance that image acquisition device can correspond target sensitization unit through the printing opacity control layer among the image sensor is adjusted to first light transmittance, eliminates the purple fringing phenomenon that the user exists at the shooting in-process, has promoted the flexibility that electronic equipment handled the image when having promoted the image definition that electronic equipment shot.

Optionally, in this embodiment of the present application, after step 204, the image acquisition method provided in this embodiment of the present application further includes step 401 described below.

Step 401, the image acquisition device adjusts the light transmittance of the light transmittance control layer corresponding to the target photosensitive unit to a second light transmittance when the second image has purple fringing.

In the embodiment of the present application, the first transmittance is greater than the second transmittance.

In this embodiment of the present application, when the image capturing device detects that the purple fringing exists in the target image, the image capturing device may adjust the light transmittance of the light transmission control layer corresponding to the target photosensitive unit again by using the method in the foregoing embodiment until the purple fringing does not exist in the second image. For a specific implementation manner, reference may be made to the foregoing embodiments, and details are not described herein again to avoid repetition.

Exemplarily, assuming that the exposure transmittance of the target area acquired by the image acquisition device is 100%, the exposure transmittance for first reducing the light transmittance of the light transmittance control layer corresponding to the target photosensitive unit is 50%, plotting and detecting whether the purple fringing phenomenon exists in the second image, if the purple fringing phenomenon exists in the second image, the exposure transmittance for second reducing the light transmittance of the light transmittance control layer corresponding to the target photosensitive unit is 25%, plotting again whether the purple fringing phenomenon exists in the target image, and repeating until the purple fringing phenomenon does not exist in the final image.

In the embodiment of the application, the light transmittance of the light transmittance control layer corresponding to the target photosensitive unit can be adjusted to the second light transmittance by the image acquisition device through the light transmittance control layer in the image sensor, so that the purple fringing phenomenon existing in the shooting process of a user is eliminated, and the flexibility of processing images by the image acquisition device is improved while the image definition shot by the image acquisition device is improved.

Optionally, in an embodiment of the present application, the image sensor includes: the signal control circuit, this signal control circuit is connected with the sensitization unit, and the target adjustment parameter includes: a first target gain; the step 203 can be specifically realized by the step 203b described below.

Step 203b, the image acquisition device adjusts the gain value corresponding to the target photosensitive unit to a first target gain value through the signal control circuit.

In the embodiment of the application, the image acquisition device can adjust the gain value corresponding to the target photosensitive unit to be the first target gain value through the signal control circuit in the image sensor, acquire the second image through the adjusted target photosensitive unit, and perform image detection on the second image to determine whether the purple fringing phenomenon exists in the second image.

In the embodiment of the application, the image acquisition device can adjust the gain value corresponding to the target photosensitive unit into the second target gain value through the signal control circuit in the image sensor, so that the purple fringing phenomenon of a user in the shooting process is eliminated, the image definition shot by the image acquisition device is improved, and the flexibility of processing images by the image acquisition device is improved.

Optionally, in this embodiment of the application, as shown in fig. 7, the signal control circuit includes: the first control module 10, the first control module 10 is connected to the first end of the photosensitive unit PD1, the first control module 10 is configured to adjust a signal voltage corresponding to the photosensitive unit, and the second end of the photosensitive unit PD1 is grounded; a second control module 11, wherein the second control module 11 is connected to the first control module 10, the second control module 11 is further connected to an output terminal (indicated by Vout in fig. 7) of the signal control circuit, and the second control module 11 is configured to adjust the conversion gain; the conversion gain is used for indicating the gain for converting the signal voltage corresponding to the first control module into the output voltage; the step 203b can be specifically realized by the step 203b1 described below.

Step 203b1, the image acquisition device adjusts the gain value corresponding to the target photosensitive unit to a first target gain value based on the target control module.

In an embodiment of the present application, the target control module includes at least one of: the device comprises a first control module and a second control module.

In the embodiment of the application, the image acquisition device can respectively obtain 1 to 7 times of the capacitor combination of the FD1 by controlling the switch of the target control module, so that the gain value corresponding to the target photosensitive unit is adjusted to be the first target gain value.

For example, assuming that the capacitance ratio of FD1: FD2: FD3 is set as 1. Therefore, the FD1 has an amplification power of 1 to 7 times.

Optionally, in this embodiment of the application, the photosensitive unit PD1 may include one photosensitive unit or multiple photosensitive units, and the photosensitive unit PD1 may specifically be a photodiode.

It is understood that, when the photosensitive unit PD1 performs the exposure, the photosensitive unit PD1 may generate electrons and holes according to the optical signal, wherein the electrons may move to the N region of the photosensitive unit PD1 and the holes may move to the P region of the photosensitive unit PD1, so that the photosensitive unit PD1 may generate and output the charge signal.

Alternatively, in the embodiment of the present application, with reference to fig. 7, the cathode electrode of the photosensitive unit PD1 may be grounded, and the anode electrode (i.e., the first end) of the photosensitive unit PD1 may be connected to the first control module 10 through the switching tube TX1, so that the charge signal generated by the photosensitive unit PD1 may enter the first control module 10; wherein the first end of the photosensitive unit PD1 is an anode electrode of the photosensitive unit PD 1.

In the embodiment of the present application, the first control module 10 is configured to perform an amplification or reduction process on the charge signal output by the photosensitive unit PD 1.

Optionally, in this embodiment of the application, with reference to fig. 7, as shown in fig. 8, the first control module includes: a first capacitor FD1, wherein a first end of the first capacitor FD1 is grounded, and a second end of the first capacitor FD1 is connected to the first end of the photosensitive element PD1 through a first switching tube TG 1; a second capacitor FD2, a first end of the second capacitor FD2 is grounded, and a second end of the second capacitor FD2 is connected to the first end of the photosensitive element PD1 through a second switching tube TG 2; a third capacitor FD3, a first end of the third capacitor FD3 is grounded, and a second end of the third capacitor FD3 is connected to the first end of the photosensitive element PD1 through a third switching tube TG 3; the step 203b1 can be specifically realized by the step 203b1a described below.

Step 203b1a, under the condition that the target control module comprises the first control module, the image acquisition device controls the first target switch tube to be in a connected state, and the gain value corresponding to the target photosensitive unit is adjusted to be the first target gain value.

In an embodiment of the present application, the first target switch tube includes at least one of: the first switch tube, the second switch tube and the third switch tube.

In the embodiment of the present application, the first capacitor, the second capacitor, and the third capacitor may be regarded as charge storage capacitors.

Optionally, in this embodiment of the application, the first switching tube TG1, the second switching tube TG2, and the third switching tube TG3 may be: mos tubes.

Optionally, in this embodiment of the present application, the first capacitor and the second capacitor may be any one of the following: electrolytic capacitor, mica capacitor, and ceramic capacitor.

It should be noted that, regarding the number of the capacitors, a person skilled in the art may select the capacitors according to the size requirement of the signal control circuit, and the embodiment of the present application is not limited thereto.

Optionally, in this embodiment of the application, the types of the first capacitor and the second capacitor may be the same or different; the capacitance values of the first capacitor and the second capacitor can be the same or different.

For example, assuming that the plurality of capacitors includes a capacitor 1, a capacitor 2, and a capacitor 3, capacitance values of the plurality of capacitors may be the same, for example, capacitance value of the capacitor 1 may be a, capacitance value of the capacitor 2 may be a, and capacitance value of the capacitor 3 may be a, and a ratio of capacitance values of the capacitor 1, the capacitor 2, and the capacitor 3 may be 1.

Further exemplarily, assuming that the plurality of capacitors includes a capacitor 1, a capacitor 2, and a capacitor 3, capacitance values of the plurality of capacitors may be different, for example, capacitance value of the capacitor 1 may be a, capacitance value of the capacitor 2 may be 2a, and capacitance value of the capacitor 3 may be 4a, and a ratio of capacitance values of the capacitor 1, the capacitor 2, and the capacitor 3 may be 1.

Optionally, in this embodiment of the present application, a plurality of capacitors may be connected in parallel.

Optionally, in this embodiment, the second terminal of each capacitor in the plurality of capacitors may be grounded.

Optionally, in this embodiment of the application, the first end of each of the plurality of capacitors may be connected to the first end of the photo sensing unit PD1 through the switch tube TX1, so that the first control module 10 may adjust the number of capacitors connected to the photo sensing unit PD1 by adjusting whether the switch tube is in an on state or an off state.

Further optionally, in this embodiment of the application, a ratio of capacitance values of the first capacitor FD1, the second capacitor FD2, and the third capacitor FD3 may specifically be: 1:2:4.

It will be appreciated that the magnification of the first control module 10 may be: the second amplification factor is 1 to 7 times, and the second amplification factor may be specifically the amplification factor of the first control module 10 when only the first capacitor FD1 is connected to the light sensing unit PD 1.

For example, in a case where the first switching tube TG1 is in a conducting state, and the second switching tube TG2 and the third switching tube TG3 are in a blocking state, the amplification factor of the first amplification module 10 may be 1 times of the second amplification factor.

When the first switch tube TG1, the second switch tube TG2 and the third switch tube TG3 are all in the on state, the amplification factor of the first amplification module 10 may be 7 times that of the second amplification factor.

Therefore, the signal output by the photosensitive unit can be amplified through at least one of the first capacitor, the second capacitor and the third capacitor to obtain a shot image with higher definition and dynamic range, and more capacitors are not required to be arranged, so that the size of the signal control circuit can be reduced, and the cost can be saved.

Optionally, in this embodiment of the present application, the first control module 10 may further perform reduction processing on the signal output by the photosensitive unit through capacitance values of the FD1, the FD2, and the FD3, so that the charge signal output by the photosensitive unit PD1 may enter a smaller capacitance, and thus the signal sensing capability (sensitivity) of the photosensitive unit PD1 may be improved, so as to improve the definition of the captured image.

Optionally, in this embodiment of the present application, with reference to fig. 8, the second end of the first capacitor FD1 is further connected to the second amplifying module 11 through the first switch tube TG 1; the second end of the second capacitor FD2 is further connected to the second amplifying module 11 through a second switch tube TG 2; the second end of the third capacitor FD3 is further connected to the second amplifying module 11 through a third switching tube TG 3.

Further alternatively, in the embodiment of the present application, after the photo sensing unit PD1 outputs all the charge signals, the switch tube TX1 may be controlled to be in a turned-off state, so that the first capacitor FD1, and/or the second capacitor FD2, and/or the third capacitor FD3 may output the voltage signals to the second amplifying module 11.

In this embodiment, when the photo sensing unit PD1 performs exposure, if the photo sensing unit PD1 reaches full well capacity (saturation), the charge signal output by the photo sensing unit PD1 may enter the first control module 10, so that the first control module 10 may adjust the number of the switching tubes in a conducting state in the plurality of switching tubes connected to the first ends of the plurality of capacitors, so as to adjust the number of the capacitors connected to the photo sensing unit PD1, and further adjust the magnification or reduction factor of the first control module 10.

The first control module 10 can adjust the amplification factor of the first control module 10 according to the capacitance value of the capacitor connected to the photosensitive unit PD1, so that the charge signal output by the photosensitive unit PD1 can enter the capacitor with large capacitance, the full-well capacity of the photosensitive unit PD1 can be improved, the strong light signal detection capability of the photosensitive unit PD1 can be improved, and the dynamic range of the shot image can be improved.

The first control module 10 can reduce the amplification factor of the first amplification module 10 according to the capacitance value of the capacitor connected to the photosensitive unit PD1, so that the charge signal output by the photosensitive unit PD1 can enter the capacitor with smaller capacitance, and the signal sensing capability (sensitivity) of the photosensitive unit PD1 can be improved, thereby improving the definition of the photographed image.

It can be understood that, since the capacitance value of the capacitor is inversely proportional to the voltage under the condition that the charge signal is fixed, after the charge signal output by the photosensitive unit PD1 enters the smaller capacitor of the first control module 10, the smaller capacitor can convert the charge signal into a larger voltage signal, and therefore, the signal sensing capability of the photosensitive unit PD1 can be improved.

In this embodiment, after the first control module 10 adjusts the amplification factor of the first control module 10, the capacitor connected to the photosensitive unit PD1 may convert the charge signal output by the photosensitive unit PD1 into a voltage signal, and output the voltage signal to the second control module 11, so that the voltage signal may enter the second control module 11 after being superimposed (i.e., amplified according to the adjusted amplification factor).

In this embodiment, the second control module 11 is configured to amplify or reduce the voltage signal output by the first control module 10.

Optionally, in this embodiment of the application, with reference to fig. 7 and 8, as shown in fig. 9, the second control module includes: a first target source follower SF1, wherein a first end of the first target source follower SF1 is connected to the first control module 10 through a fourth switching tube TG 4; a second target source follower SF2, a first end of the second target source follower SF2 being connected to the first control module 10 through a fifth switching tube TG5, the first end of the second target source follower SF2 being further connected to a second end of the first target source follower SF 1; a third target source follower SF3, a first end of the third target source follower SF3 is connected to the first control module 10 through a sixth switching tube TG6, the first end of the third target source follower SF3 is further connected to a second end of the second target source follower SF2, and the second end of the third target source follower SF3 is connected to an output end of the signal control circuit; the step 203b1 can be specifically realized by the step 203b1b described below.

Step 203b1b, under the condition that the target control module comprises a second control module, the image acquisition device controls a second target switch tube to be in a connected state, and the gain value corresponding to the target photosensitive unit is adjusted to be the first target gain value.

In an embodiment of the present application, the second target switch tube includes at least one of: a fourth switching tube, a fifth switching tube and a sixth switching tube.

In the embodiment of the present application, the first target source follower, the second target source follower and the third target source follower may be regarded as voltage signal amplifiers.

It should be noted that, regarding the number and parameters of the target source followers, a person skilled in the art may select the target source followers according to the amplification or reduction of the signal gain value, and the embodiment of the present application does not limit this.

Optionally, in this embodiment of the application, for each target source follower in the plurality of target source followers, the gain (gain) of one target source follower is greater than 1, that is, the amplification factor of the one target source follower is greater than 1.

For each target source follower in the target source followers, a target mode may be adopted for one target source follower, so that the amplification factor of the target source follower is greater than 1, and the amplification factor of the target source follower may also be smaller than 1.

The target mode includes at least one of: and a pixel stack (stacked pixel), wherein a target transistor is adopted, the quality of a gate oxide layer is improved, and the thickness of the gate oxide layer is reduced.

The above "pixel stack" can be understood as: the signal control circuit may be disposed under the photosensitive layer. The above "employing the target transistor" can be understood as: taking a target transistor as a target source follower, wherein the target transistor can be any one of the following: a Fin-shaped Field Effect Transistor (FinFET) -like Transistor, a P-type metal-oxide-semiconductor Field Effect Transistor (mos) tube.

Optionally, in this embodiment of the application, the amplification factors of the first target source follower SF1, the second target source follower SF2 and the third target source follower SF3 may be the same or different.

Specifically, the amplification factors of the first target source follower SF1, the second target source follower SF2, and the third target source follower SF3 may be: 1.2 times.

It is understood that the amplification factor of the second amplification module 11 may be: 1.2 to 1.73 times.

For example, in the case that the sixth switching tube TG6 is in the on state, and the fourth switching tube TG4 and the fifth switching tube TG5 are in the off state, the amplification factor of the second amplification module 11 may be 1.2 times, that is, the voltage signal is amplified by the third target source follower SF 3. Under the condition that the fifth switching tube TG5 is in a conducting state and the fourth switching tube TG4 and the sixth switching tube TG6 are in a blocking state, the amplification factor of the second amplification module 11 may be 1.44 times, that is, the voltage signal is amplified by the second target source follower SF2 and the third target source follower SF 3. Under the condition that the fourth switching tube TG4 is in a conducting state, and the fifth switching tube TG5 and the sixth switching tube TG6 are in an off state, the amplification factor of the second amplifying module 11 may be 1.73 times, that is, the voltage signal is amplified by the first target source follower SF1, the second target source follower SF2, and the third target source follower SF 3.

Alternatively, in this embodiment, the first target source follower SF1, the second target source follower SF2, and the third target source follower SF3 may be connected in series.

Optionally, in this embodiment of the application, for each target source follower in the plurality of target source followers, the third terminal of one target source follower may be connected to one power supply to supply power to the one target source follower through the one power supply.

Optionally, in this embodiment of the application, the first end of each target source follower in the plurality of target source followers may be connected to the first control module 10 through a switch tube; a second end of a first target source follower in the plurality of target source followers is connected with a first end of a second target source follower, a second end of the second target source follower is connected with a first end of a third target source follower, a second end of the third target source follower is connected with a first end of a fourth target source follower, and so on; therefore, the second control module 11 can adjust the number of the target source followers connected to the first control module 10 by adjusting the switching tube to be in the on state or the off state.

In this embodiment, when the voltage signal enters the second control module 11, the second control module 11 may adjust a certain switch tube of the plurality of switch tubes connected to the first ends of the plurality of target source followers to be in a conducting state, and other switch tubes (i.e., the switch tubes of the plurality of switch tubes except the certain switch tube) to be in a blocking state, so as to adjust the number of the target source followers connected to the first control module 10, and further adjust the amplification factor of the second control module 11.

Under the condition that a first target switch tube of the plurality of switch tubes connected to the first ends of the plurality of target source followers is in a conducting state and other switch tubes (i.e. switch tubes of the plurality of switch tubes except the first target switch tube) are in a cut-off state, the second control module 11 may adjust a second target switch tube of the plurality of switch tubes connected to the first ends of the plurality of target source followers to be in a conducting state, so as to adjust an amplification factor of the second control module 11, that is, a voltage signal may be amplified by more target source followers or amplified by fewer target source followers, and thus, a dynamic range of a captured image may be increased; moreover, noise introduced by amplification of the target source follower is less than noise introduced by analog gain (analog gain) of the ISP, so that the definition of a shot image can be improved.

Optionally, in this embodiment of the application, the first target switch tube and the second target switch tube may be one or more than one.

In this embodiment, after the second control module 11 adjusts the amplification factor of the second control module 11, the target source follower connected to the first control module 10 may amplify the voltage signal, and output the amplified voltage signal to the output end of the signal control circuit.

Optionally, in this embodiment, with reference to fig. 9, the second control module 11 may be connected to the output terminal Vout of the signal control circuit through a switch transistor SET, the switch transistor SET is further connected to a first terminal of the direct current power supply DC, and a second terminal of the direct current power supply DC is grounded.

Therefore, the signal output by the first amplification module can be amplified through at least one target source follower of the first target source follower, the second target source follower and the third target source follower, so that a shot image with high definition and dynamic range can be obtained, and more target source followers do not need to be arranged, so that the size of the signal control circuit can be reduced, and the cost can be saved.

Optionally, in this embodiment of the application, the first control module 10 may further perform a reduction process on the signal output by the photosensitive unit according to the number of the target source followers, so that the signal sensing capability (sensitivity) of the photosensitive unit PD1 may be improved, and thus, the definition of the captured image may be improved.

Optionally, in this embodiment of the application, after the light-entering amount of the collected image is reduced by the image collection device through the light-transmitting control layer, if the image collection device detects that a purple fringing phenomenon exists in the collected image, the gain corresponding to the target photosensitive unit may be adjusted through the signal control circuit, so as to improve the quality of the shot image.

Of course, in order to further reduce the noise of the signal control circuit, a reset module may be further provided to reset the first amplification module 10 and the second amplification module 11 through the reset module, which will be exemplified below.

Optionally, in this embodiment of the application, with reference to fig. 9 and as shown in fig. 10, the signal control circuit further includes: a target power supply VDD1; a reset switch RST1, a first end of the reset switch RST1 is connected to the target power supply VDD1, and a second end of the reset switch RST1 is connected to the first control block 10 and the second control block 11, respectively.

Further optionally, in this embodiment of the application, the reset switch RST1 may specifically be: mos tubes.

In this embodiment, the target power supply VDD1 is configured to send a reset signal to the first control module 10 and the second control module 11 through the reset switch RST1, so as to reset the first control module 10 and the second control module 11.

Further alternatively, in this embodiment of the application, before the exposure of the photosensitive unit PD1, the target power supply VDD1 may send a reset signal to the first control module 10 and the second control module 11 through the reset switch RST 1; alternatively, after the photosensitive unit PD1 is exposed, the switching tube TX1 may be controlled to be in the off state, and then the target power supply VDD1 may send a reset signal to the first control module 10 and the second control module 11 through the reset switch RST 1.

Therefore, the first amplification module and the second amplification module can be reset through the target power supply, so that the noise of the first amplification module and the noise of the second amplification module can be reduced, the noise of the signal output by the signal control circuit can be reduced, and the definition of the shot image can be improved.

Optionally, in this embodiment of the present application, after step 204, the image acquisition method provided in this embodiment of the present application further includes step 501 described below.

Step 501, under the condition that the second image has purple fringing, the image acquisition device adjusts the gain value corresponding to the target photosensitive unit to a second target gain value.

In this embodiment, the first target gain value is greater than the second target gain value.

In this embodiment of the application, when the image capturing device detects that the second image has a purple fringe, the electronic device may adjust the gain value corresponding to the target photosensitive unit again by using the method in the foregoing embodiment until the target image does not have a purple fringe. For a specific implementation manner, reference may be made to the above embodiments, and details are not described here to avoid repetition.

Exemplarily, assuming that a gain value corresponding to the target photosensitive unit acquired by the image acquisition device is 2X, an exposure gain corresponding to the target photosensitive unit is reduced for the first time is 1X, the image is plotted, whether the purple fringing phenomenon exists in the second image is detected, if the purple fringing phenomenon exists in the second image, the exposure gain of the target photosensitive unit is reduced for the second time is 0.5X, and whether the purple fringing phenomenon exists in the second image is plotted again, and the process is repeated until the final second image does not include the purple fringing phenomenon.

It should be noted that, in the image capturing method provided in the embodiment of the present application, the execution subject may be an image capturing device. In the embodiment of the present application, an image acquisition method executed by an image acquisition device is taken as an example to describe the image acquisition device provided in the embodiment of the present application.

Fig. 11 shows a schematic diagram of a possible structure of an image capturing apparatus according to an embodiment of the present application. The image capturing apparatus includes an image sensor including a photosensitive unit, as shown in fig. 11, the image capturing apparatus 70 may further include: a processing module 71, a determination module 72, an adjustment module 73 and an acquisition module 74.

The processing module 71 is configured to control the image sensor to acquire the first image and determine a purple boundary range of the first image. A determining module 72, configured to determine a target adjustment parameter of a target light-sensing unit in the image sensor based on the purple-fringing range, the blue-light calibration matrix and the red-light calibration matrix, where the blue-light calibration matrix is used to indicate the blue-light color difference range and the red-light calibration matrix is used to indicate the red-light color difference range. And the adjusting module 73 is configured to adjust a parameter corresponding to the target photosensitive unit according to the target adjustment parameter. And the acquisition module 74 acquires a second image through the adjusted image sensor.

In a possible implementation manner, the image capturing device includes a lens, the processing module 71 is further configured to control the image sensor to shoot a target point light source before the determining module 72 determines a target adjustment parameter of a target photosensitive unit in the image sensor based on a purple-edge range, a blue-light calibration matrix, and a red-light calibration matrix, so as to obtain G-channel image data, B-channel image data, and R-channel image data, where a definition of the G-channel image data satisfies a preset condition, and the target point light source is located on an optical axis of the lens; and obtaining a blue light calibration matrix based on the B channel image data, and obtaining a red light calibration matrix based on the R channel image data.

In a possible implementation manner, the image capturing device includes a light transmission control layer, the light transmission control layer is disposed corresponding to the image sensor, and the target adjustment parameter includes: a first light transmittance; the adjusting module 73 is specifically configured to adjust the light transmittance of the light transmission control layer corresponding to the target photosensitive unit to be the first light transmittance through the light transmission control layer.

In a possible implementation manner, the adjusting module 73 is further configured to, after acquiring a second image through the adjusted image sensor, adjust the light transmittance of the light transmittance control layer corresponding to the target photosensitive unit to a second light transmittance under the condition that the second image has a purple fringe, where the first light transmittance is greater than the second light transmittance.

In one possible implementation, the image sensor includes: the signal control circuit is connected with the photosensitive unit, and the target adjustment parameters comprise: a first target gain; the adjusting module 73 is specifically configured to adjust the gain value corresponding to the target light-sensing unit to a first target gain value through the signal control circuit.

In a possible implementation manner, the adjusting module 73 is further configured to, after the acquiring module 74 acquires the second image through the adjusted image sensor, adjust the gain value corresponding to the target photosensitive unit to a second target gain value when the second image has purple fringing, where the first target gain value is greater than the second target gain value.

In one possible implementation manner, the signal control circuit includes: the first control module is connected with the first end of the photosensitive unit and used for adjusting the signal voltage corresponding to the photosensitive unit, and the second end of the photosensitive unit is grounded; the second control module is connected with the first control module, is also connected with the output end of the signal control circuit, and is used for adjusting conversion gain; the conversion gain is used for indicating the gain for converting the signal voltage corresponding to the first control module into the output voltage; the adjusting module 73 is specifically configured to adjust a gain value corresponding to the target light-sensing unit to a first target gain value based on the target control module; wherein the target control module comprises at least one of: the device comprises a first control module and a second control module.

In a possible implementation manner, the first control module includes: the first end of the first capacitor is grounded, and the second end of the first capacitor is connected with the first end of the photosensitive element through a first switching tube; the first end of the second capacitor is grounded, and the second end of the second capacitor is connected with the first end of the photosensitive element through a second switching tube; a first end of the third capacitor is grounded, and a second end of the third capacitor is connected with the first end of the photosensitive element through a third switching tube; the adjusting module is specifically configured to control the first target switching tube to be in a connected state, and adjust a gain value corresponding to the target photosensitive unit to a first target gain value; wherein the first target switch tube comprises at least one of: the first switch tube, the second switch tube, the third switch tube.

In a possible implementation manner, the second control module includes: the first end of the first target source electrode follower is connected with the first control module through a fourth switching tube; the first end of the second target source electrode follower is connected with the first control module through a fifth switching tube, and the first end of the second target source electrode follower is also connected with the second end of the first target source electrode follower; the first end of the third target source electrode follower is connected with the first control module through a sixth switching tube, the first end of the third target source electrode follower is also connected with the second end of the second target source electrode follower, and the second end of the third target source electrode follower is connected with the output end of the signal control circuit; the adjusting module is specifically configured to control the second target switching tube to be in a connected state, and adjust a gain value corresponding to the target photosensitive unit to a first target gain value; wherein the second target switch tube comprises at least one of the following: a fourth switching tube, a fifth switching tube and a sixth switching tube.

The embodiment of the application provides an image acquisition device, because image acquisition device can be through confirming the purple border scope in the first image, thereby confirm the blue light calibration matrix that corresponds with this purple border scope and the ruddiness calibration matrix that corresponds with this purple border scope according to this purple border scope, and then can adjust the exposure parameter of the target sensitization unit that blue light calibration matrix and ruddiness calibration matrix correspond, with through the image sensor after the adjustment, the collection obtains the second image, also the image acquisition device can be based on first image, blue light calibration matrix and ruddiness calibration matrix demarcation purple border scope, and carry out parameter adjustment to the target sensitization unit that this purple border scope corresponds, can expose compensation to the target sensitization unit, reach the purpose of eliminating the purple border, the quality of image acquisition device shooting image has been promoted.

The image acquisition device in the embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in an electronic device. The device can be mobile electronic equipment or non-mobile electronic equipment. The Mobile electronic Device may be, for example, a Mobile phone, a tablet computer, a notebook computer, a palm computer, an in-vehicle electronic Device, a Mobile Internet Device (MID), an Augmented Reality (AR)/Virtual Reality (VR) Device, a robot, a wearable Device, an ultra-Mobile personal computer (UMPC), a netbook or a Personal Digital Assistant (PDA), and the like, and may also be a server, a Network Attached Storage (Network Attached Storage, NAS), a personal computer (NAS PC), a Television (TV), a teller machine, a self-service machine, and the like, and the embodiments of the present application are not limited in particular.

The image acquisition device in the embodiment of the present application may be a device having an operating system. The operating system may be an Android operating system, an IOS operating system, or other possible operating systems, which is not specifically limited in the embodiment of the present application.

The image acquisition device provided by the embodiment of the application can realize each process realized by the method embodiments of fig. 1 to fig. 10, achieve the same technical effect, and is not repeated here for avoiding repetition.

Optionally, as shown in fig. 12, an electronic device 90 is further provided in the embodiment of the present application, and includes a processor 91 and a memory 92, where the memory 92 stores a program or an instruction that can be executed on the processor 91, and when the program or the instruction is executed by the processor 91, the steps of the embodiment of the image acquisition method are implemented, and the same technical effects can be achieved, and are not described again here to avoid repetition.

It should be noted that the electronic device in the embodiment of the present application includes the mobile electronic device and the non-mobile electronic device described above.

Fig. 13 is a schematic hardware structure diagram of an electronic device implementing the embodiment of the present application.

The electronic device 100 includes, but is not limited to: a radio frequency unit 101, a network module 102, an audio output unit 103, an input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, and a processor 110.

Those skilled in the art will appreciate that the electronic device 100 may further comprise a power source (e.g., a battery) for supplying power to various components, and the power source may be logically connected to the processor 110 through a power management system, so as to implement functions of managing charging, discharging, and power consumption through the power management system. The electronic device structure shown in fig. 13 does not constitute a limitation of the electronic device, and the electronic device may include more or less components than those shown, or combine some components, or arrange different components, and thus, the description is omitted here.

In an embodiment of the present application, the electronic device includes an image sensor including a photosensitive unit.

The processor 110 is configured to control the image sensor to acquire a first image and determine a purple boundary range of the first image; determining target adjustment parameters of a target photosensitive unit in the image sensor based on a purple edge range, a blue light calibration matrix and a red light calibration matrix, wherein the blue light calibration matrix is used for indicating a blue light color difference range, and the red light calibration matrix is used for indicating a red light color difference range; adjusting parameters corresponding to the target photosensitive unit through the target adjustment parameters; and acquiring a second image through the adjusted image sensor.

The embodiment of the application provides an electronic device, because electronic device can be through confirming the purple border scope in the first image, thereby confirm the blue light calibration matrix that corresponds with this purple border scope and the ruddiness calibration matrix that corresponds with this purple border scope according to this purple border scope, and then can adjust the exposure parameter of the target sensitization unit that blue light calibration matrix and ruddiness calibration matrix correspond, with through the image sensor after the adjustment, gather and obtain the second image, also that image acquisition device can be based on first image, blue light calibration matrix and ruddiness calibration matrix demarcation purple border scope, and carry out parameter adjustment to the target sensitization unit that this purple border scope corresponds, can expose compensation to the target sensitization unit, reach the mesh of eliminating the purple border, the quality that electronic device shoots the image has been promoted

Optionally, in this embodiment of the present application, the image capturing apparatus includes a lens, and the processor 110 is further configured to control the image sensor to shoot the target point light source before determining a target adjustment parameter of the target photosensitive unit in the image sensor based on the purple-fringed range, the blue-light calibration matrix, and the red-light calibration matrix, so as to obtain G-channel image data, B-channel image data, and R-channel image data, where a definition of the G-channel image data satisfies a preset condition, and the target point light source is located on an optical axis of the lens; and obtaining a blue light calibration matrix based on the B channel image data, and obtaining a red light calibration matrix based on the R channel image data.

Optionally, in this embodiment of the application, the image capturing device includes a light transmission control layer, the light transmission control layer is disposed corresponding to the image sensor, and the target adjustment parameter includes: a first light transmittance; the processor 110 is specifically configured to adjust the light transmittance of the light transmission control layer corresponding to the target photosensitive unit to be the first light transmittance through the light transmission control layer.

Optionally, in this embodiment of the application, the processor 110 is further configured to, after acquiring a second image through the adjusted image sensor, adjust the light transmittance of the light transmittance control layer corresponding to the target photosensitive unit to a second light transmittance under the condition that the second image has purple fringing, where the first light transmittance is greater than the second light transmittance.

Optionally, in an embodiment of the present application, the image sensor includes: the signal control circuit is connected with the photosensitive unit, and the target adjustment parameters comprise: a first target gain; the processor 110 is specifically configured to adjust a gain value corresponding to the target light-sensing unit to a first target gain value through the signal control circuit.

Optionally, in this embodiment of the application, the processor 110 is further configured to, after acquiring a second image through the adjusted image sensor, adjust a gain value corresponding to the target photosensitive unit to a second target gain value under the condition that the second image has purple fringing, where the first target gain value is greater than the second target gain value.

Optionally, in an embodiment of the present application, the signal control circuit includes: the first control module is connected with the first end of the photosensitive unit, the first control module is used for adjusting the signal voltage corresponding to the photosensitive unit, and the second end of the photosensitive unit is grounded; the second control module is connected with the first control module, is also connected with the output end of the signal control circuit, and is used for adjusting conversion gain; the conversion gain is used for indicating the gain for converting the signal voltage corresponding to the first control module into the output voltage; the processor 110 is specifically configured to adjust a gain value corresponding to the target light-sensing unit to a first target gain value based on the target control module; wherein the target control module comprises at least one of: the device comprises a first control module and a second control module.

Optionally, in this embodiment of the application, the first control module includes: the first end of the first capacitor is grounded, and the second end of the first capacitor is connected with the first end of the photosensitive element through a first switching tube; a first end of the second capacitor is grounded, and a second end of the second capacitor is connected with the first end of the photosensitive element through a second switching tube; a first end of the third capacitor is grounded, and a second end of the third capacitor is connected with the first end of the photosensitive element through a third switching tube; the processor 110 is specifically configured to control the first target switch tube to be in a connected state, and adjust a gain value corresponding to the target light sensing unit to a first target gain value; wherein the first target switch tube comprises at least one of: the first switch tube, the second switch tube and the third switch tube.

Optionally, in this embodiment of the application, the second control module includes: the first end of the first target source electrode follower is connected with the first control module through a fourth switching tube; a first end of the second target source follower is connected with the first control module through a fifth switching tube, and the first end of the second target source follower is also connected with a second end of the first target source follower; a first end of the third target source follower is connected with the first control module through a sixth switching tube, the first end of the third target source follower is also connected with a second end of the second target source follower, and the second end of the third target source follower is connected with the output end of the signal control circuit; the processor 110 is specifically configured to control the second target switch tube to be in a connected state, and adjust a gain value corresponding to the target light sensing unit to a first target gain value; wherein the second target switch tube comprises at least one of: a fourth switching tube, a fifth switching tube and a sixth switching tube.

The electronic device provided by the embodiment of the application can realize each process realized by the method embodiment, and can achieve the same technical effect, and for avoiding repetition, the details are not repeated here.

The beneficial effects of the various implementation manners in this embodiment may specifically refer to the beneficial effects of the corresponding implementation manners in the above method embodiments, and are not described herein again to avoid repetition.

It should be understood that, in the embodiment of the present application, the input Unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042, and the Graphics Processing Unit 1041 processes image data of a still picture or a video obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The display unit 106 may include a display panel 1061, and the display panel 1061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 107 includes at least one of a touch panel 1071 and other input devices 1072. The touch panel 1071 is also referred to as a touch screen. The touch panel 1071 may include two parts of a touch detection device and a touch controller. Other input devices 1072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

The memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a first storage area storing a program or an instruction and a second storage area storing data, wherein the first storage area may store an operating system, an application program or an instruction (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, memory 109 may comprise volatile memory or non-volatile memory, or memory 109 may comprise both volatile and non-volatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. The volatile Memory may be a Random Access Memory (RAM), a Static Random Access Memory (Static RAM, SRAM), a Dynamic Random Access Memory (Dynamic RAM, DRAM), a Synchronous Dynamic Random Access Memory (Synchronous DRAM, SDRAM), a Double Data Rate Synchronous Dynamic Random Access Memory (Double Data Rate SDRAM, ddr SDRAM), an Enhanced Synchronous SDRAM (ESDRAM), a Synchronous Link DRAM (SLDRAM), and a Direct Memory bus RAM (DRRAM). The memory 109 in the embodiments of the subject application includes, but is not limited to, these and any other suitable types of memory.

Processor 110 may include one or more processing units; optionally, the processor 110 integrates an application processor, which primarily handles operations involving the operating system, user interface, and applications, etc., and a modem processor, which primarily handles wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 110.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements the processes of the foregoing method embodiments, and can achieve the same technical effects, and in order to avoid repetition, details are not repeated here.

The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read only memory ROM, a random access memory RAM, a magnetic or optical disk, and the like.

The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to execute a program or an instruction to implement each process of the foregoing method embodiments, and can achieve the same technical effect, and in order to avoid repetition, the details are not repeated here.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as a system-on-chip, or a system-on-chip.

Embodiments of the present application provide a computer program product, where the program product is stored in a storage medium, and the program product is executed by at least one processor to implement the processes of the foregoing image acquisition method embodiments, and can achieve the same technical effects, and in order to avoid repetition, details are not repeated here.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a component of' 8230; \8230;" does not exclude the presence of another like element in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

Through the description of the foregoing embodiments, it is clear to those skilled in the art that the method of the foregoing embodiments may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but in many cases, the former is a better implementation. Based on such understanding, the technical solutions of the present application may be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. An image acquisition method is applied to an image acquisition device, the image acquisition device comprises an image sensor, the image sensor comprises a photosensitive unit, and the method is characterized by comprising the following steps:

controlling the image sensor to acquire a first image and determining a purple boundary range of the first image;

determining target adjustment parameters of a target photosensitive unit in the image sensor based on the purple-edge range, the blue-light calibration matrix and the red-light calibration matrix, wherein the blue-light calibration matrix is used for indicating a blue-light color difference range, and the red-light calibration matrix is used for indicating a red-light color difference range;

adjusting parameters corresponding to the target photosensitive unit through the target adjustment parameters;

and acquiring a second image through the adjusted image sensor.

2. The method of claim 1, wherein the image capture device comprises a lens, and wherein before determining the target adjustment parameters for the target photosites in the image sensor based on the purple-fringed range, the blue calibration matrix, and the red calibration matrix, the method further comprises:

controlling the image sensor to shoot a target point light source to obtain G channel image data, B channel image data and R channel image data, wherein the definition of the G channel image data meets a preset condition, and the target point light source is positioned on the optical axis of the lens;

and obtaining a blue light calibration matrix based on the B channel image data, and obtaining a red light calibration matrix based on the R channel image data.

3. The method of claim 1, wherein the image capture device comprises a light transmission control layer disposed in correspondence with the image sensor, and wherein the target adjustment parameters comprise: a first light transmittance;

the adjusting the parameters corresponding to the target photosensitive unit through the target adjusting parameters includes:

and adjusting the light transmittance of the light transmission control layer corresponding to the target photosensitive unit to be the first light transmittance through the light transmission control layer.

4. The method of claim 3, wherein after acquiring the second image with the adjusted image sensor, the method further comprises:

and under the condition that purple edges exist in the second image, adjusting the light transmittance of the light transmittance control layer corresponding to the target photosensitive unit to be a second light transmittance, wherein the first light transmittance is greater than the second light transmittance.

5. The method of claim 1, wherein the image sensor comprises: the signal control circuit is connected with the photosensitive unit, and the target adjustment parameters comprise: a first target gain;

the adjusting the parameters corresponding to the target photosensitive unit through the target adjusting parameters comprises:

and adjusting the gain value corresponding to the target photosensitive unit to be the first target gain value through the signal control circuit.

6. The method of claim 5, wherein after acquiring the second image with the adjusted image sensor, the method further comprises:

and under the condition that purple edges exist in the second image, adjusting the gain value corresponding to the target photosensitive unit to be a second target gain value, wherein the first target gain value is larger than the second target gain value.

7. The method of claim 5, wherein the signal control circuit comprises:

the first control module is connected with the first end of the photosensitive unit, the first control module is used for adjusting the signal voltage corresponding to the photosensitive unit, and the second end of the photosensitive unit is grounded;

the second control module is connected with the first control module, is also connected with the output end of the signal control circuit, and is used for adjusting conversion gain;

the conversion gain is used for indicating the gain for converting the signal voltage corresponding to the first control module into the output voltage;

the adjusting, by the signal control circuit, the gain value corresponding to the target photosensitive unit to the first target gain value includes:

adjusting the gain value corresponding to the target photosensitive unit to be the first target gain value based on a target control module;

wherein the target control module comprises at least one of: the first control module and the second control module.

8. The method of claim 7, wherein the first control module comprises:

a first end of the first capacitor is grounded, and a second end of the first capacitor is connected with the first end of the photosensitive element through a first switching tube;

a first end of the second capacitor is grounded, and a second end of the second capacitor is connected with the first end of the photosensitive element through a second switching tube;

a first end of the third capacitor is grounded, and a second end of the third capacitor is connected with the first end of the photosensitive element through a third switching tube;

in a case that the target control module includes the first control module, the adjusting the gain value corresponding to the target photosensitive unit to the first target gain value based on the target control module includes:

controlling a first target switch tube to be in a connected state, and adjusting a gain value corresponding to the target photosensitive unit to be the first target gain value;

wherein the first target switch tube comprises at least one of: the first switch tube, the second switch tube and the third switch tube.

9. The image capturing method of claim 7, wherein the second control module comprises:

a first target source follower, a first end of which is connected with the first control module through a fourth switch tube;

a first end of the second target source follower is connected with the first control module through a fifth switching tube, and the first end of the second target source follower is also connected with a second end of the first target source follower;

a first end of the third target source follower is connected with the first control module through a sixth switching tube, the first end of the third target source follower is also connected with a second end of the second target source follower, and the second end of the third target source follower is connected with the output end of the signal control circuit;

in a case that the target control module includes the second control module, the adjusting the gain value corresponding to the target light-sensing unit to the first target gain value based on the target control module includes:

controlling a second target switching tube to be in a connected state, and adjusting the gain value corresponding to the target photosensitive unit to be the first target gain value;

wherein the second target switch tube comprises at least one of: the fourth switch tube, the fifth switch tube and the sixth switch tube.

10. An image capturing device, the image capturing device comprising an image sensor, the image sensor comprising a light sensing unit, the image capturing device comprising: the device comprises a processing module, a determining module, an adjusting module and an acquisition module;

the processing module is used for controlling the image sensor to acquire a first image and determining a purple boundary range of the first image;

the determining module is used for determining a target adjustment parameter of a target photosensitive unit in the image sensor based on the purple-edge range, a blue light calibration matrix and a red light calibration matrix, wherein the blue light calibration matrix is used for indicating a blue light color difference range, and the red light calibration matrix is used for indicating a red light color difference range;

the adjusting module is used for adjusting the parameters corresponding to the target photosensitive unit through the target adjusting parameters;

and the acquisition module is used for acquiring a second image through the adjusted image sensor.

11. The apparatus of claim 10, wherein the image capture device comprises a lens; the processing module is further configured to control the image sensor to shoot a target point light source before determining a target adjustment parameter of a target photosensitive unit in the image sensor based on the purple fringe range, the blue light calibration matrix and the red light calibration matrix, so as to obtain G channel image data, B channel image data and R channel image data, wherein the definition of the G channel image data meets a preset condition, and the target point light source is located on an optical axis of the lens; and obtaining a blue light calibration matrix based on the B channel image data, and obtaining a red light calibration matrix based on the R channel image data.

12. The apparatus of claim 10, wherein the image capturing device comprises a light transmission control layer disposed corresponding to the image sensor; the target adjustment parameters include: a first light transmittance;

the adjusting module is specifically configured to adjust, through the light transmission control layer, the light transmittance of the light transmission control layer corresponding to the target photosensitive unit to the first light transmittance.

13. The apparatus according to claim 12, wherein the control module is further configured to, after acquiring the second image through the adjusted image sensor, adjust light transmittance of the light transmittance control layer corresponding to the target light sensing unit to a second light transmittance when purple fringing exists in the second image, where the first light transmittance is greater than the second light transmittance.

14. The apparatus of claim 10, wherein the image sensor comprises: the signal control circuit is connected with the photosensitive unit, and the target adjustment parameters comprise: a first target gain;

the adjusting module is specifically configured to adjust, by the signal control circuit, the gain value corresponding to the target light sensing unit to the first target gain value.

15. The apparatus of claim 14, wherein the adjusting module is further configured to adjust a gain value corresponding to the target photosite unit to a second target gain value if purple fringing exists in the second image, and the first target gain value is greater than the second target gain value.

16. An electronic device comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, the program or instructions when executed by the processor implementing the steps of the image acquisition method according to any one of claims 1 to 9.

17. A readable storage medium, characterized in that it stores thereon a program or instructions which, when executed by a processor, implement the steps of the image acquisition method according to any one of claims 1 to 9.