CN109218626B - Photographing method and terminal - Google Patents
Photographing method and terminal Download PDFInfo
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- CN109218626B CN109218626B CN201811406422.3A CN201811406422A CN109218626B CN 109218626 B CN109218626 B CN 109218626B CN 201811406422 A CN201811406422 A CN 201811406422A CN 109218626 B CN109218626 B CN 109218626B
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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
- H04N23/70—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
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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
- H04N23/80—Camera processing pipelines; Components thereof
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Abstract
The invention provides a photographing method and a terminal, wherein the photographing method comprises the following steps: acquiring an overexposure preview image and an underexposure preview image of a shooting scene; displaying the overexposure preview image and the underexposure preview image; receiving a first input of a user; responding to the first input, adjusting exposure values of the overexposure preview image and the underexposure preview image, and obtaining adjusted exposure values; receiving a second input of the user; and responding to the second input, photographing according to the adjusted exposure value, and outputting a target image. Therefore, the scheme of the invention solves the problem that the HDR image shot by the traditional shooting method has poor effect in a scene with high contrast.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a photographing method and a terminal.
Background
High Dynamic Range (HDR) images have become a hot research field at home and abroad due to their rich levels, strong sense of realism of pictures, large Dynamic Range of images, and capability of more realistically restoring a light and shadow effect approximating a real scene. Therefore, in the prior art, a camera of a mobile phone can adopt an HDR scheme to take pictures, so that mobile phone photography and photography are more and more refined, and an effect comparable to unity and adverse can be achieved under certain conditions.
However, in the HDR scheme of the current mobile phone, the exposure degree is preset, and if a high-contrast scene is encountered, the photographing effect is not good.
Disclosure of Invention
The embodiment of the invention provides a photographing method and a terminal, and aims to solve the problem that HDR images photographed by a traditional photographing method are poor in effect in a scene with high contrast.
In a first aspect, an embodiment of the present invention provides a photographing method, which is applied to a terminal, and the photographing method includes:
acquiring an overexposure preview image and an underexposure preview image of a shooting scene;
displaying the overexposure preview image and the underexposure preview image;
receiving a first input of a user;
responding to the first input, adjusting exposure values of the overexposure preview image and the underexposure preview image, and obtaining adjusted exposure values;
receiving a second input of the user;
and responding to the second input, photographing according to the adjusted exposure value, and outputting a target image.
In a second aspect, an embodiment of the present invention provides a terminal, including:
the preview image acquisition module is used for acquiring an overexposure preview image and an underexposure preview image of a shooting scene;
the preview image display module is used for displaying the overexposure preview image and the underexposure preview image;
the first receiving module is used for receiving a first input of a user;
an exposure value adjusting module, configured to adjust exposure values of the overexposure preview image and the underexposure preview image in response to the first input, to obtain an adjusted exposure value;
the second receiving module is used for receiving a second input of the user;
and the photographing module is used for responding to the second input, photographing according to the adjusted exposure value and outputting a target image.
In a third aspect, an embodiment of the present invention provides a terminal, including a memory, a processor, and a computer program stored on the memory and executable on the processor; the processor implements the photographing method described above when executing the program.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps in the photographing method described above.
In the embodiment of the invention, the exposure values of the overexposure preview image and the underexposure preview image of the shooting scene are adjusted according to the first input of the user, so that the adjusted exposure values are adaptive to the contrast of the shooting scene, and the high-dynamic-range image with clearer details of a dark part and a bright part can be shot according to the adjusted exposure values.
Drawings
FIG. 1 is a flow chart of a photographing method according to an embodiment of the present invention;
fig. 2 is a schematic view showing an interface display of a terminal in the photographing method according to the embodiment of the present invention;
FIG. 3 is a second schematic view of an interface display of a terminal in the photographing method according to the embodiment of the invention;
fig. 4 is a third schematic view illustrating an interface display of a terminal in the photographing method according to the embodiment of the present invention;
FIG. 5 is a fourth schematic diagram illustrating an interface display of a terminal in the photographing method according to the embodiment of the invention;
FIG. 6 is a fifth schematic view illustrating an interface display of a terminal in the photographing method according to the embodiment of the invention;
fig. 7 shows a sixth schematic view of an interface display of a terminal in the photographing method according to the embodiment of the invention;
fig. 8 is a seventh schematic view illustrating an interface display of a terminal in the photographing method according to the embodiment of the present invention;
fig. 9 is a block diagram of a terminal according to an embodiment of the present invention;
fig. 10 is a schematic diagram illustrating a hardware structure of a terminal according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. 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 invention.
An embodiment of the present invention provides a photographing method, as shown in fig. 1, the method including:
step 101: and acquiring an overexposed preview image and an underexposed preview image of the shooting scene.
Step 102: and displaying the overexposure preview image and the underexposure preview image.
According to the photographing method provided by the embodiment of the invention, after the terminal enters the photographing mode, the normal exposure preview image, the overexposure preview image and the underexposure preview image can be displayed in real time in the photographing preview interface. The overexposure preview image is used for obtaining details of highlight parts, and the underexposure preview image is used for obtaining details of dark parts.
Step 103: a first input is received from a user.
The first input may be a click input, a slide input, a long press input, or the like.
Step 104: and responding to the first input, adjusting the exposure values of the overexposure preview image and the underexposure preview image, and obtaining the adjusted exposure value.
After the terminal enters a photographing mode, an overexposure preview image and an underexposure preview image of a photographing scene can be captured in real time, and whether a first input of a user is received or not is judged. And when the first input is received, adjusting the exposure values of the overexposed preview image and the underexposed preview image according to the first input.
After the exposure values of the overexposure preview image and the underexposure preview image are adjusted, the exposure values can be adapted to the contrast of a shooting scene, so that the details of the dark part and the bright part of the finally shot image can be clearer.
Step 105: a second input by the user is received.
Step 106: and responding to the second input, photographing according to the adjusted exposure value, and outputting a target image.
Therefore, as can be seen from the above description, according to the embodiment of the present invention, the exposure values of the overexposed preview image and the underexposed preview image of the shooting scene are adjusted according to the first input of the user, so that the adjusted exposure values are adapted to the contrast of the shooting scene, and thus a high dynamic range image with clearer details of the dark portion and the bright portion can be shot according to the adjusted exposure values, so as to solve the problem of poor effect of the HDR image shot by using the conventional shooting method in the high-contrast scene.
Preferably, the acquiring of the overexposed preview image and the underexposed preview image of the shooting scene includes: acquiring a normal exposure preview image of a shooting scene; according to a preset first exposure value, performing image processing on the normal exposure preview image to obtain an overexposure preview image; and according to a preset second exposure value, carrying out image processing on the normal exposure preview image to obtain an underexposure preview image.
After the terminal enters a shooting mode, an overexposure preview image and an underexposure preview image of a shooting scene captured in real time are respectively obtained after image processing is carried out on a normal exposure preview image according to a default exposure value. Therefore, the overexposure preview image and the underexposure preview image are obtained by processing the same normal exposure preview image, so that the same image content in the overexposure preview image and the underexposure preview image is ensured.
Preferably, the first input comprises a first sub-input and a second sub-input; the adjusting the exposure values of the overexposure preview image and the underexposure preview image in response to the first input to obtain an adjusted exposure value includes: responding to the first sub-input, adjusting the exposure value of the overexposure preview image, and obtaining a first target exposure value with clear highlight part details of the overexposure preview image; responding to the second sub-input, adjusting the exposure value of the under-exposed preview image, and obtaining a second target exposure value with clear dark part details of the under-exposed preview image; wherein the adjusted exposure value comprises the first target exposure value and the second target exposure value.
For example, as shown in fig. 3, selecting the overexposure preview image 4, and finely adjusting the exposure degree, for example, if the upward sliding is bright and the downward sliding is dark, obtaining the details of the dark part satisfied by the user; the underexposed preview image 5 is operated in the same manner, and highlight detail satisfactory to the user is acquired.
According to the method, the purpose of adjusting the exposure value of the overexposure preview image according to the first sub-input of the user is to acquire a first target exposure value when the details of the highlight part in the overexposure preview image are clear; the purpose of adjusting the exposure value of the under-exposed preview image according to the second word input is to acquire a second target exposure value when the details of the dark part in the under-exposed preview image are clear. When the exposure values of the overexposure preview image and the underexposure preview image are adjusted in a mode of adjusting the highlight part of the overexposure preview image to be clear and adjusting the dark part of the underexposure preview image to be clear, the adjustment mode of the exposure values is simple and convenient, and the adjustment effect is clear at a glance.
And displaying the overexposure preview image after the exposure value is adjusted on the terminal in real time in the process of adjusting the exposure value of the overexposure preview image. Similarly, in the process of adjusting the exposure value of the under-exposed preview image, the under-exposed preview image after the adjustment of the exposure value can be displayed on the terminal in real time. Therefore, the user can watch the image effect after the exposure value is adjusted in real time.
Further, the photographing and outputting the target image according to the adjusted exposure value includes: controlling a camera to shoot a normal exposure image; according to the first target exposure value, carrying out image processing on the normal exposure image to obtain a first image; according to the second target exposure value, carrying out image processing on the normal exposure image to obtain a second image; and carrying out image synthesis on the normal exposure image, the first image and the second image, and outputting a target image.
For example, when a user clicks a photographing button, a normal exposure image is photographed, and then the photographed normal exposure image is subjected to algorithm processing according to the adjusted exposure value to obtain an overexposed image and an underexposed image. Finally, as shown in FIG. 4, the user drags the two images of the secondary screen 2 back to the primary screen 1 to compose the final high quality HDR photograph.
The first target exposure value is the exposure value when the details of the highlight part in the overexposure preview image are clear, so the details of the highlight part of the first image obtained after the normal exposure image is subjected to image processing according to the first target exposure value are clear. Since the second target exposure value is the exposure value when the details of the dark part in the underexposed preview image are clear, the details of the dark part of the second image obtained by image processing the normal exposed image according to the second target exposure value are clear. Therefore, the target image obtained by the synthesizing process of the normal exposure image, the first image, and the second image has higher definition.
Further, the photographing and outputting the target image according to the adjusted exposure value includes: converting the first target exposure value into a first shutter duration; converting the second target exposure value into a second shutter duration; controlling the camera to respectively adopt preset normal exposure parameters, the first shutter duration and the second shutter duration to carry out exposure, and obtaining a normal exposure image, a first image and a second image; and carrying out image synthesis on the normal exposure image, the first image and the second image, and outputting a target image.
For example, when a user clicks a photographing button, a normal exposure image is photographed, the adjusted exposure value is converted into a corresponding shutter duration, the normal exposure image is photographed according to the normal exposure parameters, and an overexposed image and an underexposed image are photographed according to the converted shutter duration. Finally, as shown in FIG. 4, the user drags the two images of the secondary screen 2 back to the primary screen 1 to compose the final high quality HDR photograph.
The first target exposure value and the second target exposure value are converted into corresponding shutter time lengths, so that the photographing effect of the first image and the second image obtained by photographing through the converted shutter time lengths is more real.
Further, after obtaining the first target exposure value at which details of highlight parts of the overexposure preview image are clear, the method further comprises: displaying the first target exposure value;
after obtaining the second target exposure value with clear dark part details of the under-exposed preview image, the method further comprises: and displaying the second target exposure value.
The adjusted exposure value is displayed, so that the user can make more clear the specific adjustment degree of the exposure value, basis can be provided for the user in the subsequent photographing process, and the user can accumulate photographing experience.
Preferably, the acquiring of the overexposed preview image and the underexposed preview image of the shooting scene includes:
acquiring a normal exposure preview image of a shooting scene;
according to a first quantity of preset overexposure preview images and an exposure value interval, carrying out image processing on the normal exposure preview images to obtain the first quantity of overexposure preview images;
according to a second quantity of preset underexposure preview images and the exposure value interval, carrying out image processing on the normal exposure preview images to obtain the second quantity of underexposure preview images;
and the exposure value interval is the difference of the exposure values of any two adjacent images after the normal exposure preview image, the overexposure preview image and the underexposure preview image are arranged according to the sequence of the exposure values from small to large.
Therefore, the overexposed preview image and the underexposed preview image may be not limited to one image, but may be a plurality of images. That is, the overexposed preview image may further include a plurality of preview images with different degrees of overexposure, and the underexposed preview image may further include a plurality of images with different degrees of underexposure. And when the terminal enters a photographing mode, acquiescently obtaining the overexposure preview images according to a preset first quantity, and obtaining the underexposure preview images according to a preset second quantity. Wherein the first number and the second number may be the same.
The exposure degrees of the first number of overexposure preview images, the normal exposure preview images and the second number of underexposure preview images are gradually decreased, so that the definition degrees of different details of the same shooting scene under different exposure degrees can be displayed.
Further, the first input comprises a third sub-input and a fourth sub-input;
and responding to the first input, adjusting the exposure values of the overexposure preview image and the underexposure preview image, and obtaining the adjusted exposure values, wherein the step of adjusting the exposure values comprises
In response to the third sub-input, adjusting the number of over-exposed preview images and the number of under-exposed preview images, wherein the number of over-exposed preview images and the number of under-exposed preview images are associated with the input parameters of the third sub-input;
adjusting the exposure value interval in response to the fourth sub-input, wherein the exposure value interval is associated with an input parameter of the fourth sub-input;
determining an exposure value of each overexposure preview image according to the number of the adjusted overexposure preview images and the adjusted exposure value interval;
determining an exposure value of each under-exposed preview image according to the number of the adjusted under-exposed preview images and the adjusted exposure value interval;
wherein the number of the over-exposed preview images is the same as the number of the under-exposed preview images.
The third sub-input and the fourth sub-input may be different inputs or may be the same input, for example, a slide input, a click input, a long-press input, and the like. Specifically, for example, the numbers of the overexposed preview images and the underexposed preview images can be adjusted by sliding up and down, and the exposure value interval can be adjusted by sliding left and right; alternatively, as shown in fig. 8, the number of overexposed preview images and underexposed preview images is adjusted by sliding up and down at the display positions of the number of overexposed preview images and underexposed preview images, and the exposure value interval is adjusted by sliding up and down at the display position of the exposure value interval.
In addition, more overexposure preview images and underexposure preview images with different exposure degrees can be obtained by adjusting the number of the overexposure preview images and the underexposure preview images and the exposure value interval, so that the finally shot picture has a higher dynamic range.
Further, the photographing and outputting the target image according to the adjusted exposure value includes: controlling a camera to shoot a normal exposure image; sequentially carrying out image processing on the normal exposure image according to the exposure value of each overexposure preview image to obtain an overexposure image; sequentially carrying out image processing on the normal exposure image according to the exposure value of each under-exposure preview image to obtain an under-exposure image; and carrying out image synthesis on the normal exposure image, the overexposure image and the underexposure image, and outputting a target image.
For example, if the number of the adjusted overexposure preview images and the number of the adjusted underexposure preview images are two, when the user clicks the photographing button, one normal exposure image is photographed, and then the photographed normal exposure image is subjected to algorithm processing according to the adjusted exposure value, so that two overexposure images and two underexposure images are obtained. Finally, the user drags the four images of the secondary screen back to the main screen to compose a high-quality HDR photo.
The exposure degrees of the overexposed image, the normal exposure image and the underexposed image are gradually decreased, so that the details of each part of the target image obtained by the synthesis processing of the overexposed image, the normal exposure image and the underexposed image are clearer. Namely, a sharp and clear picture can be shown through more overexposed images and underexposed images with different degrees, so that a picture with a higher dynamic range can be shot.
Further, the photographing and outputting the target image according to the adjusted exposure value includes: respectively converting the exposure value of each overexposure preview image and the exposure value of each underexposure preview image into shutter duration; controlling the camera to respectively expose by adopting a predetermined normal exposure parameter and each shutter duration obtained by conversion to obtain a normal exposure image, an overexposure image and an underexposure image; and carrying out image synthesis on the normal exposure image, the overexposure image and the underexposure image, and outputting a target image.
For example, the number of the adjusted overexposure preview images and the number of the adjusted underexposure preview images are two, when the user clicks a photographing button, one normal exposure image is photographed, the adjusted exposure value is converted into the corresponding shutter duration, the normal exposure image is photographed according to the normal exposure parameters, and the two overexposure images and the two underexposure images are photographed according to the converted shutter duration. Finally, the user drags the four images of the secondary screen back to the main screen to compose a high-quality HDR photo.
The exposure value of each overexposure preview image and the exposure value of each underexposure preview image are respectively converted into shutter time lengths, so that the photographing effect of the overexposure image and the underexposure image obtained by photographing with the converted shutter time lengths is more real, and the effect of the target image obtained by synthesizing the overexposure image, the normal exposure image and the underexposure image is more real.
Preferably, after the adjusting the number of over-exposed preview images and the number of under-exposed preview images, the method further comprises: displaying the number of the adjusted overexposure preview images and the number of the underexposure preview images;
after the adjusting the exposure value interval, the method further comprises: the adjusted exposure value interval is displayed.
The number of the adjusted overexposure preview images, the number of the underexposure preview images and the exposure value interval are displayed, so that a user can clearly see the specific value of the adjusted object, a basis can be provided for the user in the subsequent shooting process, and the shooting experience can be accumulated for the user. Specifically, the sum of the number of over-exposure preview images, the number of under-exposure preview images, and the number of normal exposure preview images may be displayed, and for example, "number of sheets 5" shown in fig. 7 indicates two over-exposure preview images, two under-exposure preview images, and one normal exposure preview image.
Preferably, before the acquiring the overexposed preview image and the underexposed preview image of the shooting scene, the method further includes:
receiving a third input of the user;
and responding to the third input, and executing the step of acquiring the overexposed preview image and the underexposed preview image of the shooting scene.
The third input may be a slide input, a click input, a long-press input, or the like. The step of acquiring the overexposed preview image and the underexposed preview image of the shooting scene is triggered when a third input of the user is received. And when the third input of the user is not received, the overexposure preview image and the underexposure preview image of the shooting scene are not acquired, so that the electric quantity of the terminal is saved.
Further, the normal exposure preview image is displayed in a first area, and the overexposure preview image and the underexposure preview image are displayed in a second area; the third input is a sliding input, the sliding start position of the sliding input is located in the first area, and the sliding end position of the sliding input is located in the second area; the receiving a first input of a user comprises:
receiving a first input of a user in a second area;
the first area and the second area are different areas of the same display screen; or the terminal comprises a first screen and a second screen, wherein the first area is positioned on the first screen, and the second area is positioned on the second screen.
For example, when the terminal includes a main screen 1 and a sub-screen 2, as shown in fig. 3 and 7, a normal exposure preview image 3 is displayed on the main screen 1, and an overexposure preview image 4 and an underexposure preview image 5 are displayed on the sub-screen 2.
In addition, as shown in fig. 2, the user slides on the main screen 1 to the sub-screen 2 with two fingers, and two floating frames are generated on the sub-screen 2, so as to display the main screen camera preview interface. Wherein one floating frame on the sub-screen displays an overexposed preview image (e.g., default to overexposed +2EV), and the other floating frame displays an underexposed preview image (e.g., default to-2 EV). Alternatively, as shown in fig. 5, the user slides the main screen 1 to the sub-screen 2 with a single finger, a floating frame is generated on the sub-screen, and the main screen camera preview interface is displayed, and then as shown in fig. 6, the user presses the floating frame of the sub-screen 2 with two fingers, and the two fingers slide the screen separately, so that two overexposed preview images 4 and two underexposed preview images 5 with exposure value intervals of 1EV are displayed by default as shown in fig. 7.
An embodiment of the present invention further provides a terminal, as shown in fig. 9, where the terminal 900 includes:
a preview image acquiring module 901, configured to acquire an overexposure preview image and an underexposure preview image of a shooting scene;
a preview image display module 902, configured to display the overexposed preview image and the underexposed preview image;
a first receiving module 903, configured to receive a first input of a user;
an exposure value adjusting module 904, configured to adjust exposure values of the overexposure preview image and the underexposure preview image in response to the first input, to obtain an adjusted exposure value;
a second receiving module 905, configured to receive a second input of the user;
and the photographing module 906 is configured to perform photographing according to the adjusted exposure value in response to the second input, and output a target image.
Preferably, the preview image acquiring module 901 includes:
a first acquisition unit configured to acquire a normal exposure preview image of a shooting scene;
the first processing unit is used for carrying out image processing on the normal exposure preview image according to a preset first exposure value to obtain an overexposure preview image;
and the second processing unit is used for carrying out image processing on the normal exposure preview image according to a preset second exposure value to obtain an underexposure preview image.
Preferably, the first input comprises a first sub-input and a second sub-input; the exposure value adjustment module 904 comprises:
a first adjusting unit, configured to adjust an exposure value of the overexposure preview image in response to the first sub-input, and obtain a first target exposure value at which details of highlight portions of the overexposure preview image are clear;
a second adjusting unit, configured to adjust an exposure value of the under-exposed preview image in response to the second sub-input, and obtain a second target exposure value at which details of a dark portion of the under-exposed preview image are clear;
wherein the adjusted exposure value comprises the first target exposure value and the second target exposure value.
Preferably, the photographing module 906 includes:
the first shooting unit is used for controlling the camera to shoot a normal exposure image;
the third processing unit is used for carrying out image processing on the normal exposure image according to the first target exposure value to obtain a first image;
the fourth processing unit is used for carrying out image processing on the normal exposure image according to the second target exposure value to obtain a second image;
and the first synthesizing unit is used for carrying out image synthesis on the normal exposure image, the first image and the second image and outputting a target image.
Preferably, the photographing module 906 includes:
a first conversion unit configured to convert the first target exposure value into a first shutter duration;
a second conversion unit configured to convert the second target exposure value into a second shutter duration;
the second shooting unit is used for controlling the camera to respectively adopt preset normal exposure parameters, the first shutter duration and the second shutter duration to carry out exposure so as to obtain a normal exposure image, a first image and a second image;
and the second synthesis unit is used for carrying out image synthesis on the normal exposure image, the first image and the second image and outputting a target image.
Preferably, the terminal 900 further includes:
a first display module for displaying the first target exposure value;
and the second display module is used for displaying the second target exposure value.
Preferably, the preview image acquiring module 901 includes:
a second acquisition unit configured to acquire a normal exposure preview image of a shooting scene;
a fifth processing unit, configured to perform image processing on the normal exposure preview image according to a preset first number of overexposure preview images and an exposure value interval, to obtain the first number of overexposure preview images;
a sixth processing unit, configured to perform image processing on the normal exposure preview images according to a preset second number of under-exposure preview images and the exposure value interval, to obtain the second number of under-exposure preview images;
and the exposure value interval is the difference of the exposure values of any two adjacent images after the normal exposure preview image, the overexposure preview image and the underexposure preview image are arranged according to the sequence of the exposure values from small to large.
Preferably, the first input comprises a third sub-input and a fourth sub-input; the exposure value adjustment module 904 comprises:
a third adjusting unit, configured to adjust, in response to the third sub-input, a number of over-exposed preview images and a number of under-exposed preview images, where the number of over-exposed preview images and the number of under-exposed preview images are associated with input parameters of the third sub-input;
a fourth adjusting unit for adjusting the exposure value interval in response to the fourth sub-input, wherein the exposure value interval is associated with the input parameter of the fourth sub-input;
the first determining unit is used for determining the exposure value of each overexposure preview image according to the number of the adjusted overexposure preview images and the adjusted exposure value interval;
a second determining unit, configured to determine an exposure value of each of the under-exposed preview images according to the adjusted number of the under-exposed preview images and the adjusted exposure value interval;
wherein the number of the over-exposed preview images is the same as the number of the under-exposed preview images.
Preferably, the photographing module 906 includes:
the third shooting unit is used for controlling the camera to shoot a normal exposure image;
the seventh processing unit is used for carrying out image processing on the normal exposure image according to the exposure value of each overexposure preview image in sequence to obtain an overexposure image;
the eighth processing unit is used for carrying out image processing on the normal exposure image according to the exposure value of each under-exposure preview image in sequence to obtain the under-exposure image;
and the third synthesis unit is used for carrying out image synthesis on the normal exposure image, the overexposure image and the underexposure image and outputting a target image.
Preferably, the photographing module 906 includes:
a third conversion unit configured to convert the exposure value of each overexposure preview image and the exposure value of each underexposure preview image into a shutter duration, respectively;
the fourth shooting unit is used for controlling the camera to respectively adopt the predetermined normal exposure parameters and each shutter duration obtained by conversion to carry out exposure so as to obtain a normal exposure image, an overexposure image and an underexposure image;
and the fourth synthesis unit is used for carrying out image synthesis on the normal exposure image, the overexposure image and the underexposure image and outputting a target image.
Preferably, the terminal 900 further includes:
the third display module is used for displaying the adjusted number of the overexposure preview images and the number of the underexposure preview images;
and the fourth display module is used for displaying the adjusted exposure value interval.
Preferably, the terminal 900 further includes:
the third receiving module is used for receiving a third input of the user;
and a response module, configured to respond to the third input, trigger the preview image acquiring module 901 to execute the step of acquiring the overexposed preview image and the underexposed preview image of the shooting scene.
Preferably, the normal exposure preview image is displayed in a first area, and the overexposure preview image and the underexposure preview image are displayed in a second area;
the third input is a sliding input, the sliding start position of the sliding input is located in the first area, and the sliding end position of the sliding input is located in the second area;
the first receiving module is specifically configured to:
receiving a first input of a user in a second area;
the first area and the second area are different areas of the same display screen; or the terminal comprises a first screen and a second screen, wherein the first area is positioned on the first screen, and the second area is positioned on the second screen.
As can be seen from the above, according to the terminal 900 in the embodiment of the present invention, the exposure values of the overexposed preview image and the underexposed preview image of the shooting scene are adjusted according to the first input of the user, so that the adjusted exposure values are adapted to the contrast of the shooting scene, and thus a high dynamic range image with clearer details of the dark portion and the bright portion can be shot according to the adjusted exposure values.
Embodiments of the present invention also provide a terminal, as shown in fig. 10, where the terminal 1000 includes, but is not limited to: a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a memory 10010, a processor 1010, and a power supply 1011. Those skilled in the art will appreciate that the terminal configuration shown in fig. 10 is not intended to be limiting, and that the terminal may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.
The processor 1010 is configured to obtain an overexposure preview image and an underexposure preview image of a shooting scene; displaying the overexposure preview image and the underexposure preview image; receiving a first input of a user; responding to the first input, adjusting exposure values of the overexposure preview image and the underexposure preview image, and obtaining adjusted exposure values; receiving a second input of the user; and responding to the second input, photographing according to the adjusted exposure value, and outputting a target image.
Therefore, according to the terminal 1000 in the embodiment of the present invention, the exposure values of the overexposed preview image and the underexposed preview image of the shooting scene are adjusted according to the first input of the user, so that the adjusted exposure values are adapted to the contrast of the shooting scene, and thus a high dynamic range image with clearer details of the dark portion and the bright portion can be shot according to the adjusted exposure values.
It should be understood that, in the embodiment of the present invention, the radio frequency unit 1001 may be used for receiving and sending signals during a message transmission or a call, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 1010; in addition, the uplink data is transmitted to the base station. In general, radio frequency unit 1001 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. Further, the radio frequency unit 1001 may also communicate with a network and other devices through a wireless communication system.
The terminal provides the user with wireless broadband internet access through the network module 1002, such as helping the user send and receive e-mails, browse webpages, access streaming media, and the like.
The audio output unit 1003 may convert audio data received by the radio frequency unit 1001 or the network module 1002 or stored in the memory 10010 into an audio signal and output as sound. Also, the audio output unit 1003 can provide audio output (e.g., a call signal reception sound, a message reception sound, etc.) related to a specific function performed by the terminal 1000. The audio output unit 1003 includes a speaker, a buzzer, a receiver, and the like.
The input unit 1004 is used to receive an audio or video signal. The input Unit 1004 may include a Graphics Processing Unit (GPU) 10041 and a microphone 10042, the Graphics processor 10041 Processing image data of still pictures or video obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 1006. The image frames processed by the graphic processor 10041 may be stored in the memory 10010 (or other storage medium) or transmitted via the radio frequency unit 1001 or the network module 1002. The microphone 10042 can receive sound and can process such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 1001 in case of a phone call mode.
Terminal 1000 can also include at least one sensor 1005 such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 10061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 10061 and/or a backlight when the terminal 1000 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the terminal posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensors 1005 may also include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, etc., which will not be described in detail herein.
The display unit 1006 is used to display information input by the user or information provided to the user. The Display unit 1006 may include a Display panel 10061, and the Display panel 10061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.
The user input unit 1007 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the terminal. Specifically, the user input unit 1007 includes a touch panel 10071 and other input devices 10072. The touch panel 10071, also referred to as a touch screen, may collect touch operations by a user on or near the touch panel 10071 (e.g., operations by a user on or near the touch panel 10071 using a finger, a stylus, or any other suitable object or attachment). The touch panel 10071 may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 1010, and receives and executes commands sent by the processor 1010. In addition, the touch panel 10071 may be implemented by various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 10071, the user input unit 1007 can include other input devices 10072. Specifically, the other input devices 10072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a track ball, a mouse, and a joystick, which are not described herein again.
Further, the touch panel 10071 can be overlaid on the display panel 10061, and when the touch panel 10071 detects a touch operation thereon or nearby, the touch operation is transmitted to the processor 1010 to determine the type of the touch event, and then the processor 1010 provides a corresponding visual output on the display panel 10061 according to the type of the touch event. Although in fig. 10, the touch panel 10071 and the display panel 10061 are two independent components for implementing the input and output functions of the terminal, in some embodiments, the touch panel 10071 and the display panel 10061 may be integrated for implementing the input and output functions of the terminal, which is not limited herein.
The memory 10010 can be used to store software programs as well as various data. The memory 10010 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 10010 can include high-speed random access memory and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.
The processor 1010 is a control center of the terminal, connects various parts of the entire terminal using various interfaces and lines, and performs various functions of the terminal and processes data by operating or executing software programs and/or modules stored in the memory 10010 and calling data stored in the memory 10010, thereby integrally monitoring the terminal. Processor 1010 may include one or more processing units; preferably, the processor 1010 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 1010.
Terminal 1000 can also include a power supply 1011 (e.g., a battery) for powering the various components, and preferably, power supply 1011 can be logically coupled to processor 1010 through a power management system that provides management of charging, discharging, and power consumption.
In addition, terminal 1000 can include some functional blocks not shown, which are not described herein.
Preferably, an embodiment of the present invention further provides a terminal, including a processor 1010, a memory 10010, and a computer program stored in the memory 10010 and capable of running on the processor 1010, where the computer program is executed by the processor 1010 to implement each process of the above-mentioned photographing method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the processes of the above-mentioned photographing method embodiment, and can achieve the same technical effects, and in order to avoid repetition, the descriptions thereof are omitted here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
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.
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 invention 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 invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (14)
1. A photographing method is applied to a terminal, and is characterized by comprising the following steps:
acquiring an overexposure preview image and an underexposure preview image of a shooting scene;
displaying the overexposure preview image and the underexposure preview image;
receiving a first input of a user;
responding to the first input, adjusting exposure values of the overexposure preview image and the underexposure preview image, and obtaining adjusted exposure values;
receiving a second input of the user;
responding to the second input, photographing according to the adjusted exposure value, and outputting a target image;
the acquiring of the overexposure preview image and the underexposure preview image of the shooting scene comprises the following steps:
acquiring a normal exposure preview image of a shooting scene;
according to a first quantity of preset overexposure preview images and an exposure value interval, carrying out image processing on the normal exposure preview images to obtain the first quantity of overexposure preview images;
according to a second quantity of preset underexposure preview images and the exposure value interval, carrying out image processing on the normal exposure preview images to obtain the second quantity of underexposure preview images;
the exposure value interval is the difference of the exposure values of any two adjacent images after the normal exposure preview image, the overexposure preview image and the underexposure preview image are arranged according to the sequence of the exposure values from small to large;
the first input comprises a third sub-input and a fourth sub-input;
the adjusting the exposure values of the overexposure preview image and the underexposure preview image in response to the first input to obtain an adjusted exposure value includes:
in response to the third sub-input, adjusting the number of over-exposed preview images and the number of under-exposed preview images, wherein the number of over-exposed preview images and the number of under-exposed preview images are associated with the input parameters of the third sub-input;
adjusting the exposure value interval in response to the fourth sub-input, wherein the exposure value interval is associated with an input parameter of the fourth sub-input;
determining an exposure value of each overexposure preview image according to the number of the adjusted overexposure preview images and the adjusted exposure value interval;
determining an exposure value of each under-exposed preview image according to the number of the adjusted under-exposed preview images and the adjusted exposure value interval;
wherein the number of the over-exposed preview images is the same as the number of the under-exposed preview images.
2. The method of claim 1, wherein the obtaining of the overexposed and underexposed preview images of the captured scene comprises:
acquiring a normal exposure preview image of a shooting scene;
according to a preset first exposure value, performing image processing on the normal exposure preview image to obtain an overexposure preview image;
and according to a preset second exposure value, carrying out image processing on the normal exposure preview image to obtain an underexposure preview image.
3. The method of claim 1, wherein the first input comprises a first sub-input and a second sub-input;
the adjusting the exposure values of the overexposure preview image and the underexposure preview image in response to the first input to obtain an adjusted exposure value includes:
responding to the first sub-input, adjusting the exposure value of the overexposure preview image, and obtaining a first target exposure value with clear highlight part details of the overexposure preview image;
responding to the second sub-input, adjusting the exposure value of the under-exposed preview image, and obtaining a second target exposure value with clear dark part details of the under-exposed preview image;
wherein the adjusted exposure value comprises the first target exposure value and the second target exposure value.
4. The method according to claim 3, wherein the photographing and outputting the target image according to the adjusted exposure value comprises:
controlling a camera to shoot a normal exposure image;
according to the first target exposure value, carrying out image processing on the normal exposure image to obtain a first image;
according to the second target exposure value, carrying out image processing on the normal exposure image to obtain a second image;
and carrying out image synthesis on the normal exposure image, the first image and the second image, and outputting a target image.
5. The method according to claim 3, wherein the photographing and outputting the target image according to the adjusted exposure value comprises:
converting the first target exposure value into a first shutter duration;
converting the second target exposure value into a second shutter duration;
controlling the camera to respectively adopt preset normal exposure parameters, the first shutter duration and the second shutter duration to carry out exposure, and obtaining a normal exposure image, a first image and a second image;
and carrying out image synthesis on the normal exposure image, the first image and the second image, and outputting a target image.
6. The method according to claim 3, wherein after obtaining the first target exposure value at which details of highlight parts of the overexposed preview image are clear, the method further comprises:
displaying the first target exposure value;
after obtaining the second target exposure value with clear dark part details of the under-exposed preview image, the method further comprises:
and displaying the second target exposure value.
7. The method of claim 1, wherein said taking a picture and outputting the target image according to the adjusted exposure value comprises:
controlling a camera to shoot a normal exposure image;
sequentially carrying out image processing on the normal exposure image according to the exposure value of each overexposure preview image to obtain an overexposure image;
sequentially carrying out image processing on the normal exposure image according to the exposure value of each under-exposure preview image to obtain an under-exposure image;
and carrying out image synthesis on the normal exposure image, the overexposure image and the underexposure image, and outputting a target image.
8. The method of claim 1, wherein said taking a picture and outputting the target image according to the adjusted exposure value comprises:
respectively converting the exposure value of each overexposure preview image and the exposure value of each underexposure preview image into shutter duration;
controlling the camera to respectively expose by adopting a predetermined normal exposure parameter and each shutter duration obtained by conversion to obtain a normal exposure image, an overexposure image and an underexposure image;
and carrying out image synthesis on the normal exposure image, the overexposure image and the underexposure image, and outputting a target image.
9. The method of claim 1, wherein after adjusting the number of over-exposed preview images and the number of under-exposed preview images, the method further comprises:
displaying the number of the adjusted overexposure preview images and the number of the underexposure preview images;
after the adjusting the exposure value interval, the method further comprises:
the adjusted exposure value interval is displayed.
10. The method of claim 1 or 2, wherein prior to the acquiring the overexposed and underexposed preview images of the captured scene, the method further comprises:
receiving a third input of the user;
and responding to the third input, and executing the step of acquiring the overexposed preview image and the underexposed preview image of the shooting scene.
11. The method of claim 10, wherein the normal exposure preview image is displayed in a first area and the overexposure preview image and the underexposure preview image are displayed in a second area;
the third input is a sliding input, the sliding start position of the sliding input is located in the first area, and the sliding end position of the sliding input is located in the second area;
the receiving a first input of a user comprises:
receiving a first input of a user in a second area;
the first area and the second area are different areas of the same display screen; or the terminal comprises a first screen and a second screen, wherein the first area is positioned on the first screen, and the second area is positioned on the second screen.
12. A terminal, comprising:
the preview image acquisition module is used for acquiring an overexposure preview image and an underexposure preview image of a shooting scene;
the preview image display module is used for displaying the overexposure preview image and the underexposure preview image;
the first receiving module is used for receiving a first input of a user;
an exposure value adjusting module, configured to adjust exposure values of the overexposure preview image and the underexposure preview image in response to the first input, to obtain an adjusted exposure value;
the second receiving module is used for receiving a second input of the user;
the photographing module is used for responding to the second input, photographing according to the adjusted exposure value and outputting a target image;
the preview image acquisition module includes:
a second acquisition unit configured to acquire a normal exposure preview image of a shooting scene;
a fifth processing unit, configured to perform image processing on the normal exposure preview image according to a preset first number of overexposure preview images and an exposure value interval, to obtain the first number of overexposure preview images;
a sixth processing unit, configured to perform image processing on the normal exposure preview images according to a preset second number of under-exposure preview images and the exposure value interval, to obtain the second number of under-exposure preview images;
the exposure value interval is the difference of the exposure values of any two adjacent images after the normal exposure preview image, the overexposure preview image and the underexposure preview image are arranged according to the sequence of the exposure values from small to large;
the first input comprises a third sub-input and a fourth sub-input; the exposure value adjustment module includes:
a third adjusting unit, configured to adjust, in response to the third sub-input, a number of over-exposed preview images and a number of under-exposed preview images, where the number of over-exposed preview images and the number of under-exposed preview images are associated with input parameters of the third sub-input;
a fourth adjusting unit for adjusting the exposure value interval in response to the fourth sub-input, wherein the exposure value interval is associated with the input parameter of the fourth sub-input;
the first determining unit is used for determining the exposure value of each overexposure preview image according to the number of the adjusted overexposure preview images and the adjusted exposure value interval;
a second determining unit, configured to determine an exposure value of each of the under-exposed preview images according to the adjusted number of the under-exposed preview images and the adjusted exposure value interval;
wherein the number of the over-exposed preview images is the same as the number of the under-exposed preview images.
13. A terminal comprising a memory, a processor and a computer program stored on the memory and executable on the processor; characterized in that the processor implements the photographing method according to any one of claims 1 to 11 when executing the program.
14. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps in the photographing method according to any one of claims 1 to 11.
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| CN110166705B (en) * | 2019-06-06 | 2021-04-23 | Oppo广东移动通信有限公司 | High dynamic range HDR image generation method and device, electronic equipment and computer readable storage medium |
| CN110177221B (en) * | 2019-06-25 | 2021-02-26 | 维沃移动通信有限公司 | Shooting method and device for high dynamic range image |
| CN112422837B (en) * | 2019-08-20 | 2022-07-05 | 深圳市芯睿视科技有限公司 | Method, device, equipment and storage medium for synthesizing high dynamic range image |
| CN110891149B (en) * | 2019-11-13 | 2021-07-23 | 深圳市道通智能航空技术股份有限公司 | High dynamic range image automatic exposure method and unmanned aerial vehicle |
| CN111343316B (en) * | 2020-05-25 | 2020-09-08 | 北京小米移动软件有限公司 | Terminal based on folding screen |
| CN112492208B (en) * | 2020-11-30 | 2022-03-22 | 维沃移动通信有限公司 | Shooting method and electronic equipment |
| CN113923368B (en) * | 2021-11-25 | 2024-06-18 | 维沃移动通信有限公司 | Shooting method and device |
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