CN112399091A - Image processing method and device and electronic equipment - Google Patents
Image processing method and device and electronic equipment Download PDFInfo
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- CN112399091A CN112399091A CN202011153020.4A CN202011153020A CN112399091A CN 112399091 A CN112399091 A CN 112399091A CN 202011153020 A CN202011153020 A CN 202011153020A CN 112399091 A CN112399091 A CN 112399091A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/73—Circuitry for compensating brightness variation in the scene by influencing the exposure time
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/62—Control of parameters via user interfaces
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/63—Control of cameras or camera modules by using electronic viewfinders
- H04N23/631—Graphical user interfaces [GUI] specially adapted for controlling image capture or setting capture parameters
- H04N23/632—Graphical user interfaces [GUI] specially adapted for controlling image capture or setting capture parameters for displaying or modifying preview images prior to image capturing, e.g. variety of image resolutions or capturing parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/741—Circuitry for compensating brightness variation in the scene by increasing the dynamic range of the image compared to the dynamic range of the electronic image sensors
Abstract
The application discloses an image processing method, an image processing device and electronic equipment, and belongs to the technical field of communication. The problem of poor shooting effect of the image can be solved. The method comprises the following steps: receiving a first input under the condition that the electronic equipment displays the preview image according to the first exposure parameter, wherein the first input is used for adjusting the exposure parameter of the preview image from the first exposure parameter to a second exposure parameter; responding to the first input, updating and displaying the preview image by the second exposure parameter, and determining a target exposure parameter according to the first exposure parameter and the second exposure parameter, wherein the target exposure parameter at least comprises the first exposure parameter and the second exposure parameter; receiving a second input; and responding to the second input, acquiring at least two images according to the target exposure parameters, and synthesizing the at least two images into a target high dynamic range image. The method can be applied to scenes in which images are taken in a professional mode.
Description
Technical Field
The embodiment of the application relates to the technical field of communication, in particular to an image processing method and device and electronic equipment.
Background
With the development of the photographing technology, the electronic device can have a plurality of photographing modes to meet various photographing requirements of users. Among them, the professional mode is favored by more users because it includes more adjustment parameters as the professional camera.
At present, under the condition that the photographing mode of the electronic device is a professional mode, a user can manually adjust various exposure parameters to adjust the exposure of the whole image. For example, when a user takes an image in the professional mode, if the user feels that a local area of the current image is dark (which may be called a dark-tone area) and details are not clear enough, the user may increase the exposure amount of the entire image by adjusting the exposure parameters, so that the details of the dark-tone area are clearer. Since the exposure parameter is used to control the exposure of the whole image, when the details of the dark tone area are clear, it may cause the highlight overflow in the highlight area of the current image to be adjusted, thereby resulting in poor image capturing effect.
Disclosure of Invention
The embodiment of the application aims to provide an image processing method, an image processing device and electronic equipment, which can solve the problem of poor image shooting effect.
In order to solve the technical problem, the present application is implemented as follows:
in a first aspect, an embodiment of the present application provides an image processing method, including: receiving a first input under the condition that the electronic equipment displays the preview image according to the first exposure parameter, wherein the first input is used for adjusting the exposure parameter of the preview image from the first exposure parameter to a second exposure parameter; responding to the first input, updating and displaying the preview image by the second exposure parameter, and determining a target exposure parameter according to the first exposure parameter and the second exposure parameter, wherein the target exposure parameter at least comprises the first exposure parameter and the second exposure parameter; receiving a second input; and responding to the second input, acquiring at least two images according to the target exposure parameters, and synthesizing the at least two images into a target high dynamic range image.
In a second aspect, an embodiment of the present application provides an image processing apparatus, including: the device comprises a receiving module and a processing module; the receiving module is used for receiving a first input under the condition that the electronic equipment displays the preview image according to the first exposure parameter, wherein the first input is used for adjusting the exposure parameter of the preview image from the first exposure parameter to a second exposure parameter; the processing module is used for responding to the first input received by the receiving module, updating and displaying the preview image by the second exposure parameter, and determining a target exposure parameter according to the first exposure parameter and the second exposure parameter, wherein the target exposure parameter at least comprises the first exposure parameter and the second exposure parameter; the receiving module is also used for receiving a second input; and the processing module is also used for responding to the second input received by the receiving module, acquiring at least two images according to the target exposure parameter and synthesizing the at least two images into a target high dynamic range image.
In a third aspect, embodiments of the present application provide an electronic device, which includes a processor, a memory, and a program or instructions stored on the memory and executable on the processor, where 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, embodiments of the present application provide a chip, where the chip includes a processor and a communication interface, and 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 the embodiment of the application, in the case that the electronic device displays the preview image with the first exposure parameter, the electronic device may receive a first input, where the first input is used to adjust the exposure parameter of the preview image from the first exposure parameter to the second exposure parameter; and in response to the first input, updating and displaying the preview image with the second exposure parameters, and determining target exposure parameters according to the first exposure parameters and the second exposure parameters (the target exposure parameters at least comprise the first exposure parameters and the second exposure parameters); and receiving a second input; and in response to the second input, the electronic device may acquire at least two images according to the target exposure parameters and synthesize the at least two images into a target high dynamic range image. By the method, a user can manually adjust the second exposure parameter according to the requirement, and then the electronic equipment is triggered to obtain at least two images according to the target exposure parameter, and a high dynamic range image is synthesized. Compared with the related art, the method for adjusting the highlight area and the dark tone area of the image can be used for the electronic equipment, so that the shooting effect of the image is improved.
Drawings
Fig. 1 is a schematic diagram of an image processing method according to an embodiment of the present disclosure;
fig. 2 is a second schematic diagram of an image processing method according to an embodiment of the present application;
fig. 3 is a third schematic diagram of an image processing method according to an embodiment of the present application;
fig. 4 is a fourth schematic diagram of an image processing method according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of an image processing apparatus according to an embodiment of the present disclosure;
fig. 6 is a second schematic structural diagram of an image processing apparatus according to an embodiment of the present disclosure;
fig. 7 is a hardware schematic diagram of an electronic device according to an embodiment of the present disclosure;
fig. 8 is a second hardware schematic diagram 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, 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 is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein. The objects distinguished by "first", "second", and the like are usually a class, and the number of the objects is not limited, and for example, the first object may be one or a plurality of objects. 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.
The image processing method 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.
In the embodiment of the application, the method can be applied to the following scenes:
and in a scene 1, the electronic equipment shoots in a professional mode, and after the exposure parameters can be adjusted by a user if the dark tone area of the current image is darker, the dark tone area of the shot image is normally exposed, and the highlight area is excessively exposed.
And in a scene 2, the electronic equipment shoots in a professional mode, and after the exposure parameters can be adjusted by a user if the highlight area of the current image is bright, the highlight area of the shot image is normal, and the dark tone area is underexposed.
In the case that the electronic device displays the preview image, in the case that the electronic device displays the preview image with the first exposure parameter, the electronic device may receive a first input for adjusting the exposure parameter of the preview image from the first exposure parameter to the second exposure parameter; and in response to the first input, updating and displaying the preview image with the second exposure parameters, and determining target exposure parameters according to the first exposure parameters and the second exposure parameters (the target exposure parameters at least comprise the first exposure parameters and the second exposure parameters); and receiving a second input; and in response to the second input, the electronic device may acquire at least two images according to the target exposure parameters and synthesize the at least two images into a target high dynamic range image. By the method, a user can manually adjust the second exposure parameter according to the requirement, and then the electronic equipment is triggered to obtain at least two images according to the target exposure parameter, and a high dynamic range image is synthesized. Compared with the related art, the method for adjusting the highlight area and the dark tone area of the image can be used for the electronic equipment, so that the shooting effect of the image is improved.
As shown in fig. 1, an embodiment of the present application provides an image processing method, which may include steps 101 to 104 described below.
Step 101, the electronic device receives a first input when the electronic device displays the preview image with the first exposure parameter.
The first input is used for adjusting the exposure parameter of the preview image from the first exposure parameter to the second exposure parameter.
Optionally, in this embodiment of the application, the electronic device may display the preview image on a target interface, where the target interface is a preview interface of a professional mode of the electronic device, and the professional mode is a mode in which the electronic device captures an image, and the professional mode includes some adjustment parameters that are the same as those of a professional camera, for example, an exposure value EV, a sensitivity ISO, and an exposure time shutter. That is, the electronic device may display the preview image in a preview interface that displays a professional mode with a plurality of adjustment parameters.
Optionally, in this embodiment of the application, the first input is used to adjust an exposure parameter of the electronic device. Specifically, the first input may be a click input to a physical key of the electronic device; the first input can also be a voice input, and the voice input is used for instructing the electronic equipment to adjust the exposure parameters; the first input may also be a touch input to an adjustment control displayed in a display interface (e.g., the target interface) of the preview image, where the adjustment control may be used to adjust an exposure parameter of the electronic device, and the touch input may be any of: single-click input, double-click input, long-press input, drag input, gesture input, and the like. The determination may be specifically performed according to actual use requirements, and the embodiment of the present application is not specifically limited.
Optionally, in this embodiment of the application, the first input may be one input, and the one input may adjust a plurality of exposure parameters at one time; the first input may comprise a plurality of sub-inputs, each sub-input being for adjusting one exposure sub-parameter, such that a plurality of exposure sub-parameters may be adjusted to adjust an exposure parameter of the electronic device. It should be noted that the input manner of the sub-input included in the first input may refer to the input manner of the first input, which is not described herein again.
In this embodiment, the first exposure parameter is an exposure parameter of the preview image before the first input is received. The first exposure parameter is an exposure parameter which is automatically determined by the electronic equipment according to the shooting environment and the shot image. The second exposure parameter is an exposure parameter obtained by adjusting the preview image after receiving the first input.
In addition, in the embodiment of the present application, each of the first exposure parameter and the second exposure parameter may include a plurality of exposure parameters, that is, the first exposure parameter is a set of parameter values, and the second exposure parameter is a set of parameter values. For example, if the first exposure parameter is represented by the shot exposure value EV1, the first exposure parameter may include a set of sub-exposure parameters: exposure value, sensitivity, exposure time, etc. The specific method for calculating the second exposure parameter EV2 according to each sub-exposure parameter is described in detail in the following embodiments, and will not be described herein.
And 102, the electronic equipment responds to the first input, updates and displays the preview image by using a second exposure parameter, and determines a target exposure parameter according to the first exposure parameter and the second exposure parameter.
The target exposure parameters at least comprise a first exposure parameter and a second exposure parameter.
Optionally, in this embodiment of the application, the updating and displaying the preview image with the second exposure parameter means that the electronic device adjusts the exposure parameter of the first input preview image from the first exposure parameter to the second exposure parameter, and displays the adjusted preview image on a screen of the electronic device.
The above-described display mode of the updated preview image may refer to the related art, and the embodiment of the present application is not particularly limited.
Optionally, with reference to fig. 1, as shown in fig. 2, the step 102 may specifically include a step 102a and a step 102 b.
Step 102a, the electronic device responds to the first input, and adjusts the exposure parameter of the preview image from the first exposure parameter to the second exposure parameter.
In the embodiments of the present application, the following embodiments take the first input as a plurality of sub-inputs as an example for explanation.
Optionally, in this embodiment of the application, the first input may be an input for setting a target parameter, where the target parameter includes at least one of the following: exposure value, sensitivity, exposure time, etc. Each sub-input of the first input may be used to control one of the adjustment target parameters.
Optionally, before "adjusting the exposure parameter of the preview image from the first exposure parameter to the second exposure parameter" in step 2, the image processing method provided in this embodiment of the present application may further include the following step a.
And step A, the electronic equipment determines a second exposure parameter according to the target parameter.
Specifically, the calculation can be obtained by the following formula:
wherein the content of the first and second substances,
EV2representing a second exposure parameter;
EV0representing a first exposure parameter;
shutter0 denotes the exposure time in the first exposure parameter;
ISO0 denotes sensitivity in the first exposure parameter;
EV1an exposure value representing a first input adjustment;
shutter1 indicates the first input adjusted exposure time;
ISO1 denotes the sensitivity of the first input adjustment.
The EV is described above0Shutter0 and ISO0 are each sub-parameters in the first exposure parameter; the above EV1Shutter1 and ISO1 may each control the adjustment by three sub-inputs of the first input. The user can adjust the EV according to the actual use requirement1At least one of shutter1, and ISO1 to generate new second exposure parameters.
Step 102b, the electronic device responds to the first input, and determines a target exposure parameter according to the first exposure parameter and the second exposure parameter.
The target exposure parameters at least comprise a first exposure parameter and a second exposure parameter.
Optionally, in this embodiment of the application, the target exposure parameter may include other exposure parameters besides the first exposure parameter and the second exposure parameter. For example at least one third exposure parameter between the values of the first exposure parameter and the second exposure parameter. The determination may be specifically performed according to actual use requirements, and the embodiment of the present application is not specifically limited.
Optionally, in this embodiment of the application, the mode of determining the target exposure parameter by the electronic device may be any of the following modes: in the mode 1, the electronic device may determine, according to a size relationship between a difference between the first exposure parameter and the second exposure parameter and the first threshold, the number of the third exposure parameters to be added, and add the third exposure parameters according to a preset addition rule. The preset adding rule may be that a second threshold is added on the basis of the first exposure parameter, or the third exposure parameter is uniformly added between the first exposure parameter and the second exposure parameter. In the mode 2, the electronic device may obtain an absolute value of a difference between the first exposure parameter and the second exposure parameter, determine a value (e.g., a target value described below) corresponding to a threshold interval to which the absolute value belongs, and determine the target exposure parameter according to the value, the first exposure parameter, and the second exposure parameter. The determination may be specifically performed according to actual use requirements, and the embodiment of the present application is not specifically limited.
It should be noted that, the following embodiments are exemplarily illustrated by using the method for determining the target exposure parameter in the formula 2, and specific reference may be made to the descriptions in step 102b1 to step 102b3 of the following embodiments, which are not repeated herein.
Step 103, the electronic device receives a second input.
Optionally, in this embodiment of the application, the second input is used to trigger the electronic device to capture and acquire an image. Specifically, the second input may be a pressing input to a physical key of the electronic device, for example, a long press should be well established; the second input can also be voice input, and the voice input is used for indicating the electronic equipment to shoot and acquire an image according to the target exposure parameter; the second input may also be a touch input to a shooting control displayed in the preview image, where the shooting control may be used to trigger the electronic device to shoot an image, and the touch input may be any of: single-click input, double-click input, long-press input, drag input, gesture input, and the like. The determination may be specifically performed according to actual use requirements, and the embodiment of the present application is not specifically limited.
And 104, the electronic equipment responds to the second input, acquires at least two images according to the target exposure parameters and synthesizes the at least two images into a target high dynamic range image.
It should be noted that, in the embodiment of the present application, the High Dynamic Range (HDR) is a Low Dynamic Range (LDR) image with different exposure times, and an image capable of reflecting more dynamic range and details and better reflecting the visual effect in the real environment is synthesized. In the embodiment of the present application, at least two images obtained according to the target exposure parameter are low dynamic range images.
Optionally, in this embodiment of the application, the "acquiring at least two images according to the target exposure parameter" in the step 104 may be specifically implemented by the following step 104 a.
And step 104a, the electronic equipment respectively acquires an image according to each exposure parameter in the target exposure parameters.
Optionally, in this embodiment of the application, the electronic device may respectively capture and acquire an image according to each exposure parameter in the target exposure parameters, and further synthesize a high dynamic range image after acquiring at least all images. Wherein each exposure parameter acquires an image.
It can be understood that, because the electronic device can respectively obtain one image according to each exposure parameter in the target exposure parameters, a plurality of images are obtained, and then the electronic device can synthesize an image with a target high dynamic range according to the plurality of images, so as to improve the shooting effect of the image.
Specifically, the electronic device may continuously adjust the exposure parameters (e.g., adjust the first exposure parameter to the second exposure parameter) through one camera to capture the image. For example, the electronic device may capture a first image using a first exposure parameter and then capture a second image after adjusting to a second exposure parameter, and the electronic device may combine the first image and the second image into a high dynamic range image, i.e., a target high dynamic range image.
In the embodiment of the present application, the method of synthesizing the target high dynamic range image is not particularly limited, and a synthesis algorithm in the related art may be referred to. The following embodiments are exemplified by a mean synthesis algorithm, which is not intended to specifically limit the embodiments of the present application. The principle of the mean synthesis algorithm is as follows: and solving the arithmetic mean value of the RGB values of the corresponding pixel points in each image in the low dynamic range image to obtain the RGB value of one pixel point in the target high dynamic range image, namely, regarding each pixel point in the target high dynamic range image, taking the arithmetic mean value of the RGB values of the corresponding pixel points in all the low dynamic range images as the RGB value of one pixel point in the target high dynamic range image.
For example, in the case that the professional-mode shooting interface of the electronic device displays the preview image, the user may perform a sliding adjustment on an adjustment control of the interface, and the electronic device is triggered to adjust the exposure parameter of the preview image from the first exposure parameter to the second exposure parameter in response to the sliding adjustment input (i.e., the first input), and determine the target exposure parameter including the first exposure parameter and the second exposure parameter according to the first exposure parameter and the second exposure parameter. Then, the user may click the shooting control in the interface, and the electronic device may, in response to the click input (i.e., the second input), respectively shoot one image according to each exposure parameter in the target exposure parameters, thereby obtaining a plurality of shot images, and then, the electronic device may synthesize the images into an image in the dynamic range.
The embodiment of the application provides an image processing method, wherein under the condition that an electronic device displays a preview image according to a first exposure parameter, the electronic device can receive a first input, and the first input is used for adjusting the exposure parameter of the preview image from the first exposure parameter to a second exposure parameter; and in response to the first input, updating and displaying the preview image with the second exposure parameters, and determining target exposure parameters according to the first exposure parameters and the second exposure parameters (the target exposure parameters at least comprise the first exposure parameters and the second exposure parameters); and receiving a second input; and in response to the second input, the electronic device may acquire at least two images according to the target exposure parameters and synthesize the at least two images into a target high dynamic range image. By the method, a user can manually adjust the second exposure parameter according to the requirement, and then the electronic equipment is triggered to obtain at least two images according to the target exposure parameter, and a high dynamic range image is synthesized. Compared with the related art, the method for adjusting the highlight area and the dark tone area of the image can be used for the electronic equipment, so that the shooting effect of the image is improved. Optionally, with reference to fig. 2, as shown in fig. 3, the step 102b may be specifically implemented by the following steps 102b1 to 102b 3.
Step 102b1, the electronic device obtains the absolute value of the difference between the first exposure parameter and the second exposure parameter.
It should be noted that, in the embodiment of the present application, since the user performs adjustment according to the actual use requirement, the values of the second exposure parameter and the first exposure parameter cannot be accurately determined. That is, the second exposure parameter may be greater than the first exposure parameter, the second exposure parameter may also be equal to the first exposure parameter, and the second exposure parameter may also be less than the first exposure parameter. The size relationship between the two is not particularly limited in the embodiment of the application, and can be determined according to actual use requirements.
In step 102b2, the electronic device determines a target value corresponding to the threshold interval to which the absolute value belongs.
The absolute value is an absolute value of a difference between the first exposure parameter and the second exposure parameter, and the target value is used for indicating the number of the exposure parameters included in the target exposure parameter.
It should be noted that, in the embodiment of the present application, the threshold interval is composed of a plurality of thresholds, each threshold interval corresponds to one target value, and the electronic device may determine the threshold interval in which the absolute value is located, so as to determine the target value.
Optionally, in this embodiment of the application, the threshold interval may be a first interval [ X0, X1), a second interval [ X1, X2), a third interval [ X2, X3), … …, and an i-th interval [ Xi-1, Xi "). Where X0 is 0, and each threshold Xi is a preset value. For example, assume that the first interval [ X0, X1) corresponds to a target value of 2, the second interval [ X1, X2) corresponds to a target value of 3, and the third interval [ X2, X3) corresponds to a target value of 4. If the absolute value belongs to the second interval [ X1, X2), the electronic device directly determines that the target value is 3, that is, the target exposure parameter includes 3 exposure parameters, that is, the target exposure parameter includes a third exposure parameter in addition to the first exposure parameter and the second exposure parameter.
Step 102b3, the electronic device determines a target exposure parameter according to the target value, the first exposure parameter and the second exposure parameter.
Optionally, in this embodiment of the present application, the target value is N, and N is an integer greater than 2. The step 102b3 can be specifically realized by the following steps 102b3A and 102b 3B.
And 102b3A, the electronic equipment determines (N-2) third exposure parameters according to the target value.
And the value of each third exposure parameter is between the first exposure parameter and the second exposure parameter.
Optionally, in this embodiment of the application, a value of each of the third exposure parameters is between the first exposure parameter and the second exposure parameter. Specifically, when the first exposure parameter is smaller than the second exposure parameter, the third exposure parameter is larger than the first exposure parameter, and the third exposure parameter is smaller than the second exposure parameter. And when the first exposure parameter is equal to the second exposure parameter, the first exposure parameter, the second exposure parameter and the third exposure parameter are equal. When the first exposure parameter is larger than the second exposure parameter, the third exposure parameter is larger than the second exposure parameter, and the third exposure parameter is smaller than the first exposure parameter.
It should be noted that, in the embodiment, the target value is the total number of exposure parameters included in the target exposure parameter, that is, the number after including the first exposure parameter and the second exposure parameter. Thus, in determining the number of third exposure parameters, a first exposure parameter and a second exposure parameter need to be subtracted from the target value. I.e. when the target value is N, there are (N-2) third exposure parameters.
Step 102b3B, the electronic device determines the first exposure parameter, the second exposure parameter and the (N-2) third exposure parameters as the target exposure parameters.
Optionally, in this embodiment of the application, the manner in which the electronic device determines the (N-2) third exposure parameters may specifically be: selecting (N-2) exposure parameters from the first exposure parameter to the second exposure parameter, and uniformly dividing the interval from the first exposure parameter to the second exposure parameter into (N-1) intervals.
In the embodiment of the present application, the target exposure parameters include: a first exposure parameter, a second exposure parameter, and (N-2) third exposure parameters.
Optionally, in this embodiment of the application, the variation of the exposure parameter may be specifically calculated by the following formula 1, and the absolute value of the difference between the first exposure parameter and the second exposure parameter is calculated by the following formula 2, and the formula 3 is used to determine the value of each third exposure parameter. The specific formula is as follows:
equation 1: Δ EV ═ EV2-EV0
Equation 2: r1 ═ Δ EV | ═ EV2-EV0|
Equation 3:
wherein the content of the first and second substances,
EV2is shown asTwo exposure parameters;
EV0representing a first exposure parameter;
Δ EV represents the amount of change in the exposure parameter;
r1 represents the absolute value of the difference between the first exposure parameter and the second exposure parameter;
EV3jrepresents a jth third exposure parameter;
j is a positive integer less than N-1, N being the target value determined according to R1.
In the embodiment of the present application, the electronic device may determine the adjustment state of the current exposure parameter according to the magnitude relationship between the variation (i.e., Δ EV) of the exposure parameter and 0. Specifically, when the variation of the exposure parameter is greater than 0, it indicates that the user needs to increase the exposure value, and when the variation of the exposure parameter is less than 0, it indicates that the user needs to decrease the exposure value.
It is understood that the electronic device may determine the number of the third exposure parameters according to the target value, and further, the electronic device may determine the target exposure parameters according to the number of the third exposure parameters, the first exposure parameters, and the second exposure parameters. Therefore, the electronic equipment can acquire the image according to the target exposure parameter and further synthesize the image with the high dynamic range of the target, so that the shooting effect of the image is improved, and the use experience of a user is improved.
Illustratively, assume that the first exposure parameter is 1 (i.e., EV)01), the second exposure parameter is-3.3 (i.e., EV)2-3.3), the absolute value of the difference between the first exposure parameter and the second exposure parameter is 4.3 (i.e., R1 ═ 4.3), and the electronic device may determine that the target value is 3 (i.e., N ═ 3) according to the threshold interval to which the absolute value belongs, i.e., the target exposure parameter includes 3 exposure parameters, that is, until a third exposure parameter is included. Tool the above equation 3 yields:
the target exposure parameters thus obtained are: first exposure parameter EV0Second exposure parameter EV2And a third exposure parameter EV31So that the electronic device canAnd acquiring an image according to the target exposure parameter, and further synthesizing the image with the high dynamic range of the target.
It can be understood that, in the embodiment of the present application, the electronic device may determine an absolute value of a difference between the first exposure parameter and the second exposure parameter, determine a corresponding target value according to a threshold interval to which the absolute value belongs, and further determine a target exposure parameter of the electronic device according to the first exposure parameter, the second exposure parameter, and the target value. Therefore, the electronic equipment can acquire the image according to the target exposure parameter and further synthesize the image with the high dynamic range of the target, so that the shooting effect of the image is improved, and the use experience of a user is improved.
Optionally, with reference to fig. 1, as shown in fig. 4, after the step 104, the image processing method provided in the embodiment of the present application may further include the following step 105.
And 105, the electronic equipment stores the target high dynamic range image and the target image.
And the target image is an image acquired according to a second exposure parameter.
Optionally, in this embodiment of the application, after the electronic device synthesizes the target high dynamic range image, the electronic device may display target prompt information, where the target prompt information is used to prompt a user to determine to store the target high dynamic range image, or the target high dynamic range image and the target image. In particular, the electronic device may receive a first target input of the target reminder information by the user and store a target high dynamic range image in response to the first target input. The electronic device may also receive a second target input of the target reminder information by the user and store a target high dynamic range image and a target image in response to the second target input.
Optionally, in this embodiment of the application, the target image may be used to indicate a shooting effect of the image obtained by the second exposure parameter. And then, when the user uses the image again, the exposure parameters can be finely adjusted after the target image and the target high dynamic range image are checked, so that a shot image which meets the use requirements of the user better is obtained.
It can be understood that the electronic device may store the target image obtained according to the second exposure parameter while storing the target high dynamic range image, so as to facilitate the user to compare the two images, and determine whether the obtained target high dynamic range image meets the user requirement, and the user may fine-tune the exposure parameter according to the target image and the target high dynamic range image to obtain the shot image which better meets the user requirement.
It should be noted that, in the image processing method provided in the embodiment of the present application, the execution subject may be an image processing apparatus, or a control module in the image processing apparatus for executing the image processing method. In the embodiment of the present application, an image processing apparatus executes an image processing method as an example, and the apparatus provided in the embodiment of the present application is described.
As shown in fig. 5, an embodiment of the present application provides an image processing apparatus 500. The image processing apparatus 500 may include: a receiving module 501 and a processing module 502. The receiving module 501 may be configured to receive a first input, where the electronic device displays the preview image with the first exposure parameter, where the first input is used to adjust the exposure parameter of the preview image from the first exposure parameter to the second exposure parameter. The processing module 502 may be configured to update and display the preview image with the second exposure parameter in response to the first input received by the receiving module 501, and determine a target exposure parameter according to the first exposure parameter and the second exposure parameter, where the target exposure parameter at least includes the first exposure parameter and the second exposure parameter. The receiving module 501 may further be configured to receive a second input. The processing module 502 may be further configured to, in response to the second input received by the receiving module 501, obtain at least two images according to the target exposure parameter, and synthesize the at least two images into a target high dynamic range image.
Optionally, in this embodiment of the application, the processing module 502 may be specifically configured to obtain an absolute value of a difference between the first exposure parameter and the second exposure parameter; determining a target value corresponding to a threshold interval to which the absolute value belongs, wherein the target value is used for indicating the number of exposure parameters included in the target exposure parameters; and determining a target exposure parameter according to the target value, the first exposure parameter and the second exposure parameter.
Optionally, in this embodiment of the present application, the target value is N, and N is an integer greater than 2. The processing module 502 may be specifically configured to determine (N-2) third exposure parameters according to the target value, where a value of each third exposure parameter is between the first exposure parameter and the second exposure parameter; and determining the first exposure parameter, the second exposure parameter and the (N-2) third exposure parameters as target exposure parameters.
Optionally, in this embodiment of the application, the processing module 502 may be specifically configured to obtain one image according to each exposure parameter in the target exposure parameters.
Optionally, in conjunction with fig. 5, as shown in fig. 6, the image processing apparatus 500 may further include a storage module 503.
The storage module 503 may be configured to store the target high dynamic range image and the target image after synthesizing the at least two images into the target high dynamic range image, where the target image is an image obtained according to the second exposure parameter.
The image processing apparatus in the embodiment of the present application may be a functional entity and/or a functional module in an electronic device, which executes an image processing method, or may be a component, an integrated circuit, or a chip in a terminal. The device can be mobile electronic equipment or non-mobile electronic equipment. By way of example, the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a palm top computer, a vehicle-mounted electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a Personal Digital Assistant (PDA), and the like, and the non-mobile electronic device may be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a Television (TV), a teller machine or a self-service machine, and the like, and the embodiments of the present application are not particularly limited.
The image processing apparatus in the embodiment of the present application may be an apparatus having an operating system. The operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, and embodiments of the present application are not limited specifically.
The image processing apparatus provided in the embodiment of the present application can implement each process implemented by the image processing apparatus in the method embodiments of fig. 1 to fig. 6, and for avoiding repetition, details are not repeated here.
The embodiment of the application provides an image processing device, wherein under the condition that the image processing device displays a preview image by using a first exposure parameter, the image processing device can receive a first input, and the first input is used for adjusting the exposure parameter of the preview image from the first exposure parameter to a second exposure parameter; and in response to the first input, updating and displaying the preview image with the second exposure parameters, and determining target exposure parameters according to the first exposure parameters and the second exposure parameters (the target exposure parameters at least comprise the first exposure parameters and the second exposure parameters); and receiving a second input; and in response to the second input, the image processing apparatus may acquire at least two images according to the target exposure parameters and synthesize the at least two images into a target high dynamic range image. By the method, a user can manually adjust the second exposure parameter according to the requirement, and further trigger the image processing device to obtain at least two images according to the target exposure parameter and synthesize the high dynamic range image. Compared with the related art, the image processing device can adjust the highlight area and the dark tone area of the image by the method, so that the shooting effect of the image is improved.
Optionally, as shown in fig. 7, an electronic device 700 is further provided in this embodiment of the present application, and includes a processor 701, a memory 702, and a program or an instruction stored in the memory 702 and executable on the processor 701, where the program or the instruction is executed by the processor 701 to implement each process of the above-mentioned embodiment of the image processing method, and can achieve the same technical effect, and no further description is provided 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. 8 is a schematic diagram of a hardware structure of an electronic device implementing an embodiment of the present application.
The electronic device 2000 includes, but is not limited to: a radio frequency unit 2001, a network module 2002, an audio output unit 2003, an input unit 2004, a sensor 2005, a display unit 2006, a user input unit 2007, an interface unit 2008, a memory 2009, and a processor 2010.
Among other things, the input unit 2004 may include a graphic processor 20041 and a microphone 20042, the display unit 2006 may include a display panel 20061, the user input unit 2007 may include a touch panel 20071 and other input devices 20072, and the memory 2009 may be used to store software programs (e.g., an operating system, an application program required for at least one function), and various data.
Those skilled in the art will appreciate that the electronic device 2000 may further include a power supply (e.g., a battery) for supplying power to various components, and the power supply may be logically connected to the processor 2010 through a power management system, so as to manage charging, discharging, and power consumption management functions through the power management system. The electronic device structure shown in fig. 8 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.
The user input unit 2007 may be configured to receive a first input for adjusting the exposure parameter of the preview image from the first exposure parameter to the second exposure parameter when the electronic device displays the preview image with the first exposure parameter. A processor 2010, which may be configured to update and display the preview image with the second exposure parameter in response to the first input received by the user input unit 2007, and determine a target exposure parameter according to the first exposure parameter and the second exposure parameter, where the target exposure parameter includes at least the first exposure parameter and the second exposure parameter. The user input unit 2007 may also be used to receive a second input. The processor 2010, in response to the second input received by the user input unit 2007, may be further configured to obtain at least two images according to the target exposure parameters and to synthesize the at least two images into a target high dynamic range image.
The embodiment of the application provides electronic equipment, wherein under the condition that the electronic equipment displays a preview image according to a first exposure parameter, the electronic equipment can receive a first input, and the first input is used for adjusting the exposure parameter of the preview image from the first exposure parameter to a second exposure parameter; and in response to the first input, updating and displaying the preview image with the second exposure parameters, and determining target exposure parameters according to the first exposure parameters and the second exposure parameters (the target exposure parameters at least comprise the first exposure parameters and the second exposure parameters); and receiving a second input; and in response to the second input, the electronic device may acquire at least two images according to the target exposure parameters and synthesize the at least two images into a target high dynamic range image. By the method, a user can manually adjust the second exposure parameter according to the requirement, and then the electronic equipment is triggered to obtain at least two images according to the target exposure parameter, and a high dynamic range image is synthesized. Compared with the related art, the method for adjusting the highlight area and the dark tone area of the image can be used for the electronic equipment, so that the shooting effect of the image is improved.
Optionally, in this embodiment of the application, the processor 2010 may be specifically configured to obtain an absolute value of a difference between the first exposure parameter and the second exposure parameter; determining a target value corresponding to a threshold interval to which the absolute value belongs, wherein the target value is used for indicating the number of exposure parameters included in the target exposure parameters; and determining a target exposure parameter according to the target value, the first exposure parameter and the second exposure parameter.
It can be understood that, in the embodiment of the present application, the electronic device may determine an absolute value of a difference between the first exposure parameter and the second exposure parameter, determine a corresponding target value according to a threshold interval to which the absolute value belongs, and further determine a target exposure parameter of the electronic device according to the first exposure parameter, the second exposure parameter, and the target value. Therefore, the electronic equipment can acquire the image according to the target exposure parameter and further synthesize the image with the high dynamic range of the target, so that the shooting effect of the image is improved, and the use experience of a user is improved.
Optionally, in this embodiment of the present application, the target value is N, and N is an integer greater than 2. The processor 2010 may be specifically configured to determine (N-2) third exposure parameters according to the target value, where a value of each third exposure parameter is between the first exposure parameter and the second exposure parameter; and determining the first exposure parameter, the second exposure parameter and the (N-2) third exposure parameters as target exposure parameters.
It is understood that the electronic device may determine the number of the third exposure parameters according to the target value, and further, the electronic device may determine the target exposure parameters according to the number of the third exposure parameters, the first exposure parameters, and the second exposure parameters. Therefore, the electronic equipment can acquire the image according to the target exposure parameter and further synthesize the image with the high dynamic range of the target, so that the shooting effect of the image is improved, and the use experience of a user is improved.
Optionally, in this embodiment of the application, the processor 2010 may be specifically configured to obtain one image according to each exposure parameter in the target exposure parameters.
It can be understood that, because the electronic device can respectively obtain one image according to each exposure parameter in the target exposure parameters, a plurality of images are obtained, and then the electronic device can synthesize an image with a target high dynamic range according to the plurality of images, so as to improve the shooting effect of the image.
Optionally, in this embodiment of the application, the memory 2009 may be configured to store the target high dynamic range image and the target image after synthesizing at least two images into the target high dynamic range image, where the target image is an image obtained according to the second exposure parameter.
It can be understood that the electronic device may store the target image obtained according to the second exposure parameter while storing the target high dynamic range image, so as to facilitate the user to compare the two images, and determine whether the obtained target high dynamic range image meets the user requirement, and the user may fine-tune the exposure parameter according to the target image and the target high dynamic range image to obtain the shot image which better meets the user requirement.
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 each process of the embodiment of the image processing method, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.
The processor is the processor in the electronic device in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and so on.
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 above-mentioned embodiment of the image processing method, and can achieve the same technical effect, and in order to avoid repetition, the description is omitted here.
It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as system-on-chip, system-on-chip or system-on-chip, etc.
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 phrase "comprising an … …" does not exclude the presence of other like elements 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. In addition, features described with reference to certain examples may be combined in other examples.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a 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, an air conditioner, 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 (12)
1. An image processing method, characterized in that the method comprises:
receiving a first input under the condition that the electronic equipment displays the preview image according to the first exposure parameter, wherein the first input is used for adjusting the exposure parameter of the preview image from the first exposure parameter to a second exposure parameter;
responding to the first input, updating and displaying the preview image with the second exposure parameters, and determining target exposure parameters according to the first exposure parameters and the second exposure parameters, wherein the target exposure parameters at least comprise the first exposure parameters and the second exposure parameters;
receiving a second input;
and responding to the second input, acquiring at least two images according to the target exposure parameters, and synthesizing the at least two images into a target high dynamic range image.
2. The method of claim 1, wherein determining a target exposure parameter based on the first exposure parameter and the second exposure parameter comprises:
acquiring an absolute value of a difference value between the first exposure parameter and the second exposure parameter;
determining a target value corresponding to a threshold interval to which the absolute value belongs, wherein the target value is used for indicating the number of exposure parameters included in the target exposure parameters;
and determining a target exposure parameter according to the target value, the first exposure parameter and the second exposure parameter.
3. The method of claim 2, wherein the target value is N, N being an integer greater than 2; determining a target exposure parameter according to the target value, the first exposure parameter and the second exposure parameter includes:
determining (N-2) third exposure parameters according to the target value, wherein the value of each third exposure parameter is between the first exposure parameter and the second exposure parameter;
determining the first exposure parameter, the second exposure parameter and the (N-2) third exposure parameters as target exposure parameters.
4. The method of claim 1, wherein said acquiring at least two images according to the target exposure parameters comprises:
and respectively acquiring an image according to each exposure parameter in the target exposure parameters.
5. The method of claim 1, wherein after the compositing the at least two images into a target high dynamic range image, the method further comprises:
and storing the target high dynamic range image and a target image, wherein the target image is an image obtained according to the second exposure parameter.
6. An image processing apparatus, characterized in that the apparatus comprises: the device comprises a receiving module and a processing module;
the receiving module is used for receiving a first input under the condition that the electronic equipment displays the preview image according to the first exposure parameter, wherein the first input is used for adjusting the exposure parameter of the preview image from the first exposure parameter to a second exposure parameter;
the processing module is configured to update and display the preview image with the second exposure parameter in response to the first input received by the receiving module, and determine a target exposure parameter according to the first exposure parameter and the second exposure parameter, where the target exposure parameter at least includes the first exposure parameter and the second exposure parameter;
the receiving module is further used for receiving a second input;
the processing module is further configured to, in response to the second input received by the receiving module, obtain at least two images according to the target exposure parameter, and synthesize the at least two images into a target high dynamic range image.
7. The apparatus according to claim 6, wherein the processing module is specifically configured to obtain an absolute value of a difference between the first exposure parameter and the second exposure parameter; determining a target value corresponding to a threshold interval to which the absolute value belongs, wherein the target value is used for indicating the number of exposure parameters included in the target exposure parameters; and determining a target exposure parameter according to the target value, the first exposure parameter and the second exposure parameter.
8. The apparatus of claim 7, wherein the target value is N, N being an integer greater than 2;
the processing module is specifically configured to determine (N-2) third exposure parameters according to the target value, where a value of each third exposure parameter is between the first exposure parameter and the second exposure parameter; and determining the first exposure parameter, the second exposure parameter and the (N-2) third exposure parameters as target exposure parameters.
9. The apparatus according to claim 6, wherein the processing module is specifically configured to obtain one image according to each of the target exposure parameters.
10. The apparatus of claim 6, further comprising a storage module;
the storage module is configured to store the target high dynamic range image and a target image after the at least two images are synthesized into the target high dynamic range image, where the target image is an image obtained according to the second exposure parameter.
11. An electronic device comprising a processor, a memory and a program or instructions stored on the memory and executable on the processor, which program or instructions, when executed by the processor, implement the steps of the image processing method according to any one of claims 1 to 5.
12. 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 processing method according to any one of claims 1 to 5.
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