CN108111773B - Photographing method and device based on screen supplementary lighting, mobile terminal and storage medium - Google Patents
Photographing method and device based on screen supplementary lighting, mobile terminal and storage medium Download PDFInfo
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- CN108111773B CN108111773B CN201810091096.5A CN201810091096A CN108111773B CN 108111773 B CN108111773 B CN 108111773B CN 201810091096 A CN201810091096 A CN 201810091096A CN 108111773 B CN108111773 B CN 108111773B
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- 239000013589 supplement Substances 0.000 claims abstract description 186
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- 230000000694 effects Effects 0.000 description 10
- 230000001502 supplementing effect Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 230000001960 triggered effect Effects 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
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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
- H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
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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
- H04N23/65—Control of camera operation in relation to power supply
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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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Abstract
The application is a divisional application of 201610086334.4, and discloses a photographing method and device based on screen supplementary lighting, a mobile terminal and a storage medium. The method comprises the following steps: when the condition that the camera is in an on state is monitored, determining a light supplement mode of a screen according to the temperature of a battery, wherein the light supplement mode comprises an off mode, a normal light supplement mode and a low-brightness light supplement mode, and the camera is a front-facing camera or a rotatable camera with the current position being on the front side of the mobile terminal; controlling the screen to perform light supplement according to the determined light supplement mode; and controlling the camera to capture images and generate photos. By adopting the technical scheme, the light supplement mode of the conventional photographing scheme based on screen light supplement is enriched, and the light supplement mode of the screen is determined according to the temperature of the battery, so that the method and the device can adapt to photographing environments with different temperatures, and the user experience is improved.
Description
The invention relates to a shooting method, a shooting device and a shooting mobile terminal based on screen supplementary lighting, which are filed by divisional application, wherein the application number of the original application is 201610086334.4, and the application date is 2016, 02 and 15.
Technical Field
The embodiment of the invention relates to the technical field of photographing, in particular to a photographing method and device based on screen supplementary lighting, a mobile terminal and a storage medium.
Background
At present, the camera has become the standard configuration of most mobile terminals, and along with the continuous promotion of camera performance, the function of shooing among the mobile terminal is also more and more powerful, has brought the convenience for the user who likes to shoot.
Many mobile terminal users all like to use the leading camera on the mobile terminal to come the auto heterodyne, but current mobile terminal's leading camera does not all be equipped with the light filling lamp, autodyne in night or the relatively poor environment of light, can be because of underexposure and be difficult to obtain the auto heterodyne effect of ideal.
In order to obtain a proper exposure when a user performs a self-timer shooting, an existing solution is to perform a light-supplementing shooting by lighting a screen (controlling a display screen to display a proper brightness) in cooperation with a front camera. However, this solution has the following problems: the light supplement mode is single, and the shooting environment of different temperatures cannot be adapted to. When the user uses mobile terminal when autodyning under low temperature environment, the electrolyte of the lithium cell that provides electric power for mobile terminal solidifies easily, leads to the battery power to descend fast, and discharge capacity also can be corresponding weakens, if adopt present screen light filling scheme this moment and need increase screen brightness to certain luminance (normal light filling luminance), the electric current can increase suddenly, leads to the sharp loss of electric quantity, not only influences mobile terminal's stand-by time, but also can lead to certain harm to the lithium cell. In addition, mobile terminal can shoot according to the exposure parameter corresponding with normal light filling luminance, because lithium cell discharge capacity weakens, and the electric power that provides probably can not support the screen and transfer luminance to normal light filling luminance, so can cause the exposure of photo not enough, influences the shooting effect.
Disclosure of Invention
The embodiment of the invention aims to provide a photographing method and device based on screen supplementary lighting, a mobile terminal and a storage medium, so as to enrich the supplementary lighting mode of the conventional photographing scheme based on screen supplementary lighting.
In a first aspect, an embodiment of the present invention provides a photographing method based on screen light supplement, including:
when the condition that the camera is in an on state is monitored, determining a light supplement mode of a screen according to the temperature of a battery, wherein the light supplement mode comprises an off mode, a normal light supplement mode and a low-brightness light supplement mode, and the camera is a front-facing camera or a rotatable camera with the current position being on the front side of the mobile terminal;
controlling the screen to perform light supplement according to the determined light supplement mode;
and controlling the camera to capture images and generate photos.
In a second aspect, an embodiment of the present invention provides a photographing device based on screen light supplement, including:
the device comprises a light supplement mode determining module, a light supplement module and a control module, wherein the light supplement mode determining module is used for determining a light supplement mode of a screen according to the temperature of a battery when the camera is monitored to be in an on state, the light supplement mode comprises an off mode, a normal light supplement mode and a low-brightness light supplement mode, and the camera is a front camera or a rotatable camera with the current position being on the front side of the mobile terminal;
the light supplement module is used for controlling the screen to supplement light according to the determined light supplement mode;
and the photo generation module is used for controlling the camera to capture images and generating photos.
In a third aspect, an embodiment of the present invention provides a mobile terminal, where the mobile terminal integrates a photographing device based on screen supplementary lighting in the embodiment of the present invention.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the method for taking a picture based on screen fill lighting according to the embodiment of the present invention.
According to the photographing scheme based on screen light supplement provided by the embodiment of the invention, when the front camera or the rotatable camera at the current position on the front side of the mobile terminal is monitored to be in the on state, the light supplement mode of the screen is determined to be one of the off mode, the normal light supplement mode and the low-brightness light supplement mode according to the temperature of the battery, then the screen is controlled to supplement light according to the determined light supplement mode, and then the camera is controlled to capture images and generate photos. Through adopting above-mentioned technical scheme, richened the light filling mode of current scheme of shooing based on the screen light filling, and confirm the light filling mode of screen according to the battery temperature, the shooting environment of adaptable different temperatures promotes user experience.
Drawings
Fig. 1 is a schematic flow chart of a photographing method based on screen light supplement according to a first embodiment of the present invention;
fig. 2 is a schematic flow chart of a photographing method based on screen light supplement according to a second embodiment of the present invention;
fig. 3 is a schematic flow chart of a photographing method based on screen light supplement according to a third embodiment of the present invention;
fig. 4 is a schematic flowchart of a photographing method based on screen light supplement according to a fourth embodiment of the present invention;
fig. 5 is a schematic flowchart of a preferred photographing method based on screen light supplement according to a fifth embodiment of the present invention;
fig. 6 is a block diagram of a photographing device based on screen light supplement according to a sixth embodiment of the present invention.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Before discussing exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart may describe the steps as a sequential process, many of the steps can be performed in parallel, concurrently or simultaneously. In addition, the order of the steps may be rearranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figure. The processes may correspond to methods, functions, procedures, subroutines, and the like.
Example one
Fig. 1 is a flowchart illustrating a photographing method based on screen fill-in light according to an embodiment of the present invention, where the method may be executed by a photographing apparatus based on screen fill-in light, where the apparatus may be implemented by software and/or hardware, and may be generally integrated in a mobile terminal. As shown in fig. 1, the method includes:
The light supplement mode comprises a closing mode, a normal light supplement mode and a low-brightness light supplement mode, and the camera is a front-facing camera or a rotatable camera with the current position being on the front face of the mobile terminal.
For example, the mobile terminal in this embodiment may specifically be a mobile phone, a tablet computer, a digital camera, and other terminal devices configured with a display screen.
The front camera or the rotatable camera of the existing mobile terminal is not provided with a light supplement lamp. In order to obtain proper exposure when a user self-shoots at night or in an environment with poor light, the conventional scheme is to match a front camera or a rotatable camera at the front of the mobile terminal at the current position to perform light supplementing shooting by controlling a display screen to display proper brightness. However, the light supplement mode of the scheme is single, when the ambient temperature is low, the temperature of a power supply battery of the mobile terminal is also very low, the electric quantity of the battery is rapidly reduced at the moment, the discharge capacity is correspondingly weakened, and the battery cannot support the normal light supplement brightness of screen display.
Therefore, according to the scheme of the embodiment of the invention, various light supplement modes are set according to the temperature, and when the mobile terminal detects that the camera is in the on state, the light supplement modes can be determined according to the temperature of the battery.
The existing mobile terminal is provided with a battery temperature detection unit (generally arranged on a mobile terminal mainboard), and can detect the battery temperature in real time.
The light supplement mode set in the embodiment of the invention comprises a closing mode, a normal light supplement mode and a low-brightness light supplement mode. In the closing mode, when the temperature of the battery is lower than a certain limit, the screen is not started to supplement light so as to reduce the change of the discharge current of the mobile terminal battery, protect the mobile terminal battery and prolong the standby time of the mobile phone; the normal light supplementing mode is that when the temperature of the battery is within a normal working temperature range, namely the ambient temperature is within a normal range, the brightness of the screen is determined according to the ambient brightness according to the existing light supplementing scheme; the low-brightness light supplement mode is that when the battery temperature is lower than the normal battery temperature, but not lower than a certain limit, the light supplement is carried out at the brightness of the screen when the battery temperature is lower than the normal light supplement, the electric quantity consumption of the battery can be reduced, the standby time is ensured, the light supplement intensity can be enhanced by increasing the exposure time, and a picture with good shooting effect can be obtained.
And 102, controlling the screen to perform light supplement according to the determined light supplement mode.
For example, after determining one of the three fill light modes, i.e., the off mode, the normal fill light mode and the low-brightness fill light mode, according to the temperature of the battery, the mobile terminal may control the screen of the mobile terminal to control the brightness of the screen according to the determined fill light mode at a suitable time (e.g., when the screen fill light key is triggered or the photographing key is triggered).
Illustratively, when the battery temperature is lower than a first preset temperature threshold, the light supplement mode of the screen is determined to be an off mode.
Correspondingly, controlling the screen to perform light supplement according to the determined light supplement mode may include: and controlling the screen to display according to the original brightness, wherein the original brightness is the brightness of the screen before the camera is started.
The first preset temperature threshold is a relatively low temperature value, if the temperature is lower than the first preset temperature threshold, the light supplement current of the battery of the mobile terminal is changed greatly when the battery is photographed, the battery may be damaged, and the electric power provided by the battery at the temperature cannot support the screen light supplement of the mobile terminal. For example, the first predetermined temperature threshold may be set at-5 degrees. Because the hardware configuration of different mobile terminals is different, the performance of the used battery is also different, and the requirements of different users on the photographing quality are also different, the first preset temperature threshold value can be adjusted according to the actual application situation, and the specific value is not specifically limited in this embodiment.
Therefore, if the temperature of the battery is lower than the first preset temperature threshold, the screen is controlled to display according to the brightness of the screen before the camera is turned on, and the light supplement function can be turned off, so that the battery is protected, and the standby time of the mobile terminal is prolonged.
Illustratively, when the battery temperature is higher than a second preset temperature threshold, the light supplement mode of the screen is determined to be a normal light supplement mode.
Correspondingly, the controlling the screen to perform light supplement according to the determined light supplement mode may include: obtaining the brightness of the environment; determining first brightness according to the brightness of the environment, wherein the first brightness is higher than original brightness, and the original brightness is the brightness of a screen before a camera is started; the screen is controlled to display at a first brightness.
The second preset temperature threshold may be a threshold that determines the normal operating temperature of the battery. For example, 5 degrees may be set, and when the battery temperature is higher than 5 degrees, the battery temperature is a normal operating temperature. The light can be supplemented according to the normal light supplementing brightness. At the moment, the electrolyte of the lithium battery for providing power for the mobile terminal cannot be solidified, the discharging capacity of the battery is very strong, and high-brightness light supplement can be performed. Similarly, the second preset temperature threshold may be adjusted according to the actual application, and the specific value is not specifically limited in this embodiment.
The first brightness is brightness when a screen of the mobile terminal is subjected to light supplementing. The first brightness is determined by the ambient light brightness at this time. The lower the ambient light brightness is, the higher the first brightness is, and the first brightness is higher than the original brightness, so as to achieve the purpose of light supplement.
The mobile terminal can sense the change of the ambient light brightness in real time through devices such as an ambient light sensor arranged on the mobile terminal, so that the value of the first brightness is determined.
And step 103, controlling the camera to capture an image and generating a photo.
For example, when the control screen performs light supplement according to different light supplement modes, the mobile terminal may control the camera to capture an exposed image during the light supplement process, and the captured image is subjected to a series of processes such as encoding and the like of the mobile terminal to generate a photo.
According to the photographing method based on screen light supplement provided by the embodiment of the invention, when the camera is monitored to be in the on state, the light supplement mode of the screen is determined to be one of the off mode, the normal light supplement mode and the low-brightness light supplement mode according to the temperature of the battery, then the screen is controlled to supplement light according to the determined light supplement mode, and then the camera is controlled to capture an image and generate a photo. Through adopting above-mentioned technical scheme, richened the light filling mode of current scheme of shooing based on the screen light filling, and confirm the light filling mode of screen according to the battery temperature, the shooting environment of adaptable different temperatures promotes user experience.
Example two
Fig. 2 is a schematic flow chart of a photographing method based on screen fill-in light according to a second embodiment of the present invention, where the second embodiment is based on the above-mentioned embodiment and optimizes a low-brightness fill-in light mode.
Correspondingly, the method of the embodiment comprises the following steps:
When the battery temperature is between the first preset temperature threshold and the second preset temperature threshold, it is indicated that the battery temperature is lower than the normal working temperature but not so low that the screen light supplement cannot be performed, and at this time, a low-brightness light supplement mode can be adopted.
And adopting the second brightness as the brightness of the screen after light supplement in the low-brightness light supplement mode. The second brightness is lower than the first brightness, so if the discharging current of the battery of the mobile terminal when the screen is controlled to display at the second brightness is not very different from the discharging current before the camera is turned on, the battery of the mobile terminal can bear the change and the battery is not damaged.
The screen brightness corresponding to the low-brightness supplementary lighting mode is lower than the brightness corresponding to the normal supplementary lighting mode, but higher than the brightness corresponding to the off mode, so that a certain supplementary lighting effect can be achieved. For example, in order to improve the photographing quality in the low-brightness fill light mode, compensation may be performed by extending the exposure time.
In the second embodiment, on the basis of the above embodiment, the low-brightness light supplement mode is optimized, and the light supplement mode at a low temperature is further and reasonably set, so that the scheme is more complete.
EXAMPLE III
Fig. 3 is a schematic flow chart of a photographing method based on screen light supplement according to a third embodiment of the present invention. In this embodiment, the low-luminance fill light mode is further optimized based on the above embodiment, and in this embodiment, the step "controlling the screen to display at the second luminance" is optimized as follows: determining a brightness coefficient according to the temperature of the battery; determining a second brightness according to the first brightness and the brightness coefficient; and controlling the screen to display at the second brightness.
Further, the step of controlling the camera to capture the image and generate the photo is optimized as follows: determining the length of the exposure time according to the second brightness; and comparing the exposure time length with the limit safe exposure time length, controlling the camera to capture an image according to the comparison result, and generating a picture.
Correspondingly, the method of the embodiment comprises the following steps:
The brightness coefficient is used for setting the display brightness of the screen when the light supplement mode is the low-brightness light supplement mode. And obtaining a second brightness, namely the display brightness of the screen during low-brightness supplementary lighting, according to the brightness coefficient and the first brightness. Different battery temperatures may correspond to different brightness coefficients. When the battery temperature is between the first preset temperature threshold and the second preset temperature threshold, the lower the battery temperature is, the smaller the corresponding brightness coefficient is. For example, different battery temperatures and corresponding brightness coefficients may be stored in a corresponding relationship list. When the temperature of the battery reaches a certain value, the corresponding brightness coefficient can be automatically called out, and then the mobile terminal controls the display brightness of the screen during low-brightness supplementary lighting according to the current brightness coefficient and the first brightness.
When the mobile terminal determines the first brightness according to the environment brightness measured by the environment light sensor, the brightness coefficient can be selected according to the battery temperature at the moment, and the product of the first brightness and the brightness coefficient is the second brightness value. For example, if the temperature of the battery is-5 degrees and the corresponding luminance coefficient is 50%, and if the corresponding normal fill-in luminance is a, i.e., the first luminance is a, the second luminance suitable for the low-luminance fill-in mode is 50% a.
And step 304, controlling the screen to display at a second brightness.
And step 305, determining the length of the exposure time according to the second brightness.
For example, the second brightness and the length of the exposure time may be in an inverse relationship. The lower the value of the second brightness, the longer the exposure time required to achieve a good exposure effect. For example, as in the above-mentioned correspondence list of different battery temperatures and corresponding luminance coefficients, a correspondence list of the second luminance and the exposure time may be established, so as to determine the length of the exposure time according to the second luminance.
And step 306, comparing the size relationship between the exposure time length and the limit safe exposure time length, controlling the camera to capture an image according to the comparison result, and generating a picture.
The most basic requirement of a photograph is that the picture be clear. If a clear picture is taken by hand, the simplest way is to fast shutter, but if the shutter is too fast, underexposure may occur. The limit safe exposure time is the exposure time of the slowest and clear picture (not influenced by hand shake condition) one-time shutter of the shooting.
Each camera has a corresponding limit safe exposure duration, which is generally a fixed value. Therefore, the designer needs to consider the limit safe exposure time in practical application. And if the exposure time length corresponding to the second brightness is greater than the limit safety exposure time length, taking the limit safety exposure time length as the exposure time length of the shooting.
According to the shooting method based on screen light supplement provided by the third embodiment of the invention, the change of the current of the power supply battery of the mobile terminal is reduced by reducing the brightness of the screen during light supplement, and meanwhile, the photo quality is ensured by increasing the exposure time length. Compared with the existing screen light supplement scheme, the low-brightness light supplement mode in the embodiment of the invention can ensure the shooting quality of the picture, and has the advantages that the existing screen light supplement scheme cannot detect the temperature of a battery, the light supplement brightness of the screen is determined only according to the ambient light brightness, the exposure duration is determined according to the light supplement brightness, and during low-temperature shooting, due to the fact that the discharging capacity of the battery is weakened, the screen cannot reach the determined light supplement brightness, and the exposure duration is determined according to the light supplement brightness, the underexposure can be caused, the picture brightness is low, even most scenes are black possibly, the user requirements cannot be met, and the user experience is poor; the embodiment of the invention reduces the screen light filling brightness, increases the exposure time, ensures the shooting quality of the picture while protecting the battery and ensuring the standby time, and effectively improves the user experience.
Example four
Fig. 4 is a schematic flowchart of a photographing method based on screen light supplement according to a fourth embodiment of the present invention. In this embodiment, the step "comparing the exposure time length with the maximum safe exposure time length, and controlling the camera to capture an image according to the comparison result, and generating a photo" is optimized as follows: when the comparison result is that the exposure time length is less than or equal to the limit safe exposure time length, controlling the camera to capture an image according to the exposure time length and generating a picture; when the comparison result shows that the exposure time length is greater than the limit safe exposure time length, calculating a quotient of the exposure time length divided by the limit safe exposure time length and rounding up to obtain an exposure time N; and controlling the camera to continuously capture N images according to the limit safe exposure time length, and synthesizing a picture according to the N images.
Further, the "synthesize photos from N images" is optimized as: and performing superposition processing on the brightness values of every N pixels corresponding to the same position in the N images to generate a picture.
Correspondingly, the method of the embodiment comprises the following steps:
And step 404, controlling the screen to display at a second brightness.
And step 405, determining the length of the exposure time according to the second brightness.
If the exposure time length is less than or equal to the limit safe exposure time length, the problem of blurred pictures due to hand shake can be avoided, and the pictures can be directly captured through one-time exposure to generate the pictures. For example, the safe exposure time limit of the camera is 0.05 second, and if the exposure time length is 0.03 second, the camera can directly capture images at one time to generate a photo.
And step 408, calculating a quotient of the exposure time length divided by the limit safe exposure time length and rounding up to obtain the exposure times N.
And if the exposure time length is greater than the limit safe exposure time length, taking the limit safe exposure time length as the exposure time length of the shooting. However, if the images are captured at once for a limited safe exposure time, the quality of the generated photographs is poor due to underexposure. In this embodiment, a method of performing image synthesis by multiple exposures may be used to make up for the above-mentioned deficiencies. And calculating a quotient of the exposure time length divided by the limit safe exposure time length to obtain a numerical value N, wherein the exposure time length required for capturing the clear image by the low-brightness light supplementing mode is N times of the limit safe exposure time length, the exposure times N can be determined according to the times, and the time length of each exposure is the limit safe exposure time length. And rounded up when this multiple N is not an integer, so that the total exposure time is long enough to obtain a clear picture.
Illustratively, the limit safe exposure time of the camera is 0.05 second, the exposure time required by the low-brightness light supplement mode is 0.12 second, and the exposure time is 2.4 times of the limit safe exposure time of the camera, and the camera is exposed for 3 times according to the limit safe exposure time, and a picture is synthesized by using the 3 captured images.
And 409, controlling the camera to continuously capture N images according to the limit safe exposure time length, and synthesizing a picture according to the N images.
Preferably, the luminance values of every N pixels corresponding to the same position in the N images may be subjected to superposition processing to generate a photograph.
And continuously capturing N images according to the limit safe exposure duration, and superposing the brightness of the pixels at the same positions of the N images, namely superposing the brightness of N times of exposure to obtain the exposure effect corresponding to the exposure time length determined according to the second brightness in the scheme.
According to the photographing method based on screen light supplement provided by the fourth embodiment of the invention, the problem of the ultimate safe exposure time length of the camera is considered, the exposure is carried out in multiple times when the exposure time length is too long, then the photo is generated in a mode of overlapping exposure brightness, and the application range of the low-temperature light supplement mode is enlarged.
EXAMPLE five
Fig. 5 is a schematic flowchart of a preferred photographing method based on screen fill-in light according to a fifth embodiment of the present invention, where the method includes the following steps:
and step 501, when the camera is monitored to be in an opening state, acquiring the temperature of the battery.
Wherein the first interval is lower than a first preset temperature threshold; the second interval is higher than a second preset temperature threshold; the third interval is between the first preset temperature threshold and the second preset temperature threshold.
When the temperature of the battery is in the first interval, the temperature is too low, the screen is turned off to supplement light for photographing, the photographing quality is not focused, the battery is protected by reducing the change of current as much as possible, and the electric quantity of the battery is prevented from being rapidly reduced; when the temperature of the battery is in the second interval, light supplement can be carried out according to proper brightness corresponding to normal light supplement during photographing, at the moment, the temperature cannot influence the discharge of the battery, the battery can sufficiently support the screen to carry out light supplement at the proper brightness, and a better photographing effect can be obtained; when the temperature of the battery is in the third interval, the light supplementing brightness can be reduced to supplement light.
Step 503, determining the light supplement mode of the screen to be the off mode.
And step 504, maintaining the original brightness of the screen, and controlling the camera to capture an image to generate a picture when the photographing key is triggered.
At the moment, the camera does not perform screen supplementary lighting when taking a picture, but keeps the original brightness of the screen. If the ambient light brightness is low at the moment, the photographing effect is not ideal, the picture is dark, and the mobile phone battery can be effectively protected by turning off the screen for light supplement. For example, when the detected ambient light brightness is low, a prompt may be given to the user, for example, "the current environment is dark and cannot support screen light supplement, please confirm whether to take a picture", if the user has a high requirement for the picture taking effect, the user may choose not to take a picture temporarily, and turn off the camera.
And 505, determining that the light supplement mode of the screen is a normal light supplement mode.
The ambient light brightness determines the fill-in light brightness of the screen during photographing. For example, the lower the ambient light brightness, the higher the brightness of the screen fill light, and the inverse relationship between the two.
And step 507, controlling the screen to display at the first brightness, controlling the camera to capture an image, and generating a photo.
And step 508, determining the light supplement mode of the screen to be a low-brightness light supplement mode.
And step 510, when the photographing key is triggered, acquiring the ambient light brightness and determining a first brightness according to the acquired ambient light brightness.
Step 511 determines a second luminance according to the first luminance and the luminance coefficient.
And step 512, controlling the screen to display at the second brightness.
And step 513, determining the length of the exposure time according to the second brightness.
And 516, calculating a quotient of the exposure time length divided by the limit safe exposure time length and rounding up to obtain the exposure times N.
After the quotient is rounded up, the total exposure time of the N exposures is longer than the exposure time length required by the corresponding second brightness, and better exposure can be obtained during photographing. If rounding down, the quality of the shot will be affected by underexposure.
And 517, controlling the camera to continuously capture N images according to the limit safe exposure time length.
And 518, performing superposition processing on the brightness values of every N pixels corresponding to the same position in the N images to generate a picture.
According to the photographing method based on screen light supplement provided by the fifth embodiment of the invention, three different light supplement modes, namely the shutdown mode, the normal light supplement mode and the low-brightness light supplement mode, are set according to the temperature of the battery, and the specific steps of the different light supplement modes are explained in detail, so that the three light supplement modes are better matched with each other, and the user experience is further improved.
EXAMPLE six
Fig. 6 is a block diagram of a photographing device based on screen fill-in light according to a sixth embodiment of the present invention, where the device may be implemented by software and/or hardware, and is generally integrated in a mobile terminal, and can perform fill-in light photographing by executing a photographing method based on screen fill-in light. As shown in fig. 6, the apparatus includes a fill light mode determining module 601, a fill light module 602, and a photo generating module 603.
The device comprises a light supplement mode determining module 601, a light supplement mode determining module and a control module, wherein the light supplement mode determining module is used for determining a light supplement mode of a screen according to the temperature of a battery when the camera is monitored to be in an on state, the light supplement mode comprises an off mode, a normal light supplement mode and a low-brightness light supplement mode, and the camera is a front-facing camera or a rotatable camera with the current position being on the front side of the mobile terminal; a light supplement module 602, configured to control the screen to supplement light according to the determined light supplement mode; a photo generation module 603 for controlling the camera to capture images and generate photos.
The photographing device based on screen supplementary lighting provided by the fifth embodiment of the invention can realize a supplementary lighting scheme of three modes, namely a closing mode, a normal supplementary lighting mode and a low-brightness supplementary lighting mode, and can realize a good photographing effect without too large change of battery current in a low-temperature environment. Through adopting above-mentioned technical scheme, richened the light filling mode of current scheme of shooing based on the screen light filling, and confirm the light filling mode of screen according to the battery temperature, the shooting environment of adaptable different temperatures promotes user experience.
On the basis of the foregoing embodiment, the light supplement mode determining module 601 includes: the closing mode determining unit is used for determining that the light supplement mode of the screen is a closing mode when the temperature of the battery is lower than a first preset temperature threshold value; correspondingly, the light supplement module 602 includes: and the light supplementing unit is used for controlling the screen to display according to original brightness, wherein the original brightness is the brightness of the screen before the camera is started.
On the basis of the foregoing embodiment, the light supplement mode determining module 601 may further include: the normal mode determining unit is used for determining that the light supplement mode of the screen is the normal light supplement mode when the temperature of the battery is higher than a second preset temperature threshold value; correspondingly, the light supplement module 602 includes: an ambient brightness acquiring unit for acquiring ambient light brightness; the first brightness determination unit is used for determining first brightness according to the ambient light brightness, wherein the first brightness is higher than original brightness, and the original brightness is the brightness of the screen before the camera is turned on; and the first brightness display unit is used for controlling the screen to display at the first brightness.
On the basis of the foregoing embodiment, the light supplement mode determining module 601 may further include: the low-brightness determining unit is used for determining that the light supplement mode of the screen is the low-brightness light supplement mode when the temperature of the battery is between a first preset temperature threshold and a second preset temperature threshold; correspondingly, the light supplement module 602 includes: and the second brightness display unit is used for controlling the screen to display at a second brightness, wherein the second brightness is higher than an original brightness and lower than a first brightness, the original brightness is the brightness of the screen before the camera is turned on, and the first brightness is the brightness corresponding to the normal fill-in mode.
On the basis of the above embodiment, the second luminance display unit includes: a luminance coefficient determining subunit, configured to determine a luminance coefficient according to the battery temperature; a second luminance determining subunit for determining a second luminance from the first luminance and the luminance coefficient; and the second brightness display subunit is used for controlling the screen to display at the second brightness.
On the basis of the above embodiment, the photo generation module 603 includes: the exposure duration determining unit is used for determining the length of the exposure time according to the second brightness; and the photo generation unit is used for comparing the size relationship between the exposure time length and the limit safe exposure time length, controlling the camera to capture an image according to the comparison result and generating a photo.
On the basis of the foregoing embodiment, the photo generation unit is specifically configured to: when the comparison result shows that the exposure time length is less than or equal to the limit safe exposure time length, controlling the camera to capture an image according to the exposure time length and generating a picture; when the comparison result shows that the exposure time length is greater than the limit safe exposure time length, calculating a quotient of the exposure time length divided by the limit safe exposure time length and rounding up to obtain an exposure time N; and controlling the camera to continuously capture N images according to the limit safe exposure time length, and synthesizing a picture according to the N images.
In addition, the photo generation unit is specifically further configured to: and after controlling the camera to continuously capture N images according to the limit safe exposure time, performing superposition processing on the brightness values of every N pixels corresponding to the same position in the N images, and generating a picture.
EXAMPLE seven
The seventh embodiment provides a mobile terminal, which integrates the photographing device based on screen supplementary lighting in the embodiments of the present invention, and can perform supplementary lighting photographing by executing a photographing method based on screen supplementary lighting.
For example, the mobile terminal in this embodiment may specifically be a mobile phone, a tablet computer, a digital camera, and other terminal devices configured with a display screen.
When a user uses the mobile terminal in the embodiment to take a picture, the mobile terminal can determine the light supplement mode of the screen according to the temperature of the battery, control the screen to supplement light according to the determined light supplement mode, and take a picture in the light supplement process of the screen. Through adopting above-mentioned technical scheme, richened the light filling mode of current scheme of shooing based on the screen light filling, and confirm the light filling mode of screen according to the battery temperature, the shooting environment of adaptable different temperatures promotes user experience.
Example eight
The present embodiment provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement any one of the photographing methods based on screen fill-in light provided by the embodiments of the present invention.
The photographing device, the mobile terminal and the storage medium based on screen supplementary lighting provided in the above embodiments can execute the photographing method based on screen supplementary lighting provided in any embodiment of the present invention, and have corresponding functional modules and beneficial effects for executing the method. For technical details that are not described in detail in the above embodiments, reference may be made to the photographing method based on screen fill-in light provided by any embodiment of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A shooting method based on screen light supplement is characterized by comprising the following steps:
when the condition that the camera is in an on state is monitored, determining a light supplement mode of a screen according to the temperature of a battery, wherein the light supplement mode comprises an off mode, a normal light supplement mode and a low-brightness light supplement mode, and the camera is a front-facing camera or a rotatable camera with the current position being on the front side of the mobile terminal;
controlling the screen to perform light supplement according to the determined light supplement mode;
controlling the camera to capture images and generate photos;
wherein, confirm the light filling mode of screen according to battery temperature, include: when the temperature of the battery is lower than a first preset temperature threshold value, determining that a light supplement mode of a screen is a closing mode; when the temperature of the battery is higher than a second preset temperature threshold value, determining that the light supplement mode of the screen is a normal light supplement mode; when the temperature of the battery is between a first preset temperature threshold and a second preset temperature threshold, determining that the light supplement mode of the screen is a low-brightness light supplement mode;
when the determined light supplement mode is the low-brightness light supplement mode, controlling the screen to supplement light according to the determined light supplement mode, including:
controlling the screen to display at a second brightness, wherein the second brightness is higher than an original brightness and lower than a first brightness, the original brightness is the brightness of the screen before the camera is turned on, and the first brightness is the brightness corresponding to the normal supplementary lighting mode;
the controlling the camera to capture an image and generate a photograph includes:
determining the length of the exposure time according to the second brightness, wherein the second brightness and the length of the exposure time are in an inverse proportion relation;
comparing the exposure time length with the maximum safe exposure time length, controlling the camera to capture an image according to the comparison result, and generating a picture; and the limit safe exposure time length is the exposure time length of the slowest and clear-picture one-time shutter during shooting.
2. The method according to claim 1, wherein when the determined supplementary lighting mode is an off mode, the controlling the screen to perform supplementary lighting according to the determined supplementary lighting mode includes:
and controlling the screen to display according to original brightness, wherein the original brightness is the brightness of the screen before the camera is started.
3. The method according to claim 1, wherein when the determined fill-in mode is a normal fill-in mode, the controlling the screen to fill in light according to the determined fill-in mode includes:
obtaining the brightness of the environment;
determining first brightness according to the ambient light brightness, wherein the first brightness is higher than original brightness, and the original brightness is the brightness of the screen before the camera is turned on;
and controlling the screen to display at the first brightness.
4. The method of claim 1, wherein said controlling the screen to display at a second brightness comprises:
determining a brightness coefficient according to the battery temperature;
determining a second brightness according to the first brightness and the brightness coefficient;
and controlling the screen to display at the second brightness.
5. The method of claim 1, wherein controlling the camera to capture images and generate photographs according to the comparison comprises:
when the comparison result shows that the exposure time length is less than or equal to the limit safe exposure time length, controlling the camera to capture an image according to the exposure time length and generating a picture;
when the comparison result shows that the exposure time length is greater than the limit safe exposure time length, calculating a quotient of the exposure time length divided by the limit safe exposure time length and rounding up to obtain an exposure time N; and controlling the camera to continuously capture N images according to the limit safe exposure time length, and synthesizing a picture according to the N images.
6. The method of claim 5, wherein said composing a photograph from said N images comprises:
and performing superposition processing on the brightness values of every N pixels corresponding to the same position in the N images to generate a photo.
7. The utility model provides a device of shooing based on screen light filling which characterized in that includes:
the device comprises a light supplement mode determining module, a light supplement module and a control module, wherein the light supplement mode determining module is used for determining a light supplement mode of a screen according to the temperature of a battery when the camera is monitored to be in an on state, the light supplement mode comprises an off mode, a normal light supplement mode and a low-brightness light supplement mode, and the camera is a front camera or a rotatable camera with the current position being on the front side of the mobile terminal;
the light supplement module is used for controlling the screen to supplement light according to the determined light supplement mode;
the photo generation module is used for controlling the camera to capture an image and generating a photo;
wherein, confirm the light filling mode of screen according to battery temperature, include: when the temperature of the battery is lower than a first preset temperature threshold value, determining that a light supplement mode of a screen is a closing mode; when the temperature of the battery is higher than a second preset temperature threshold value, determining that the light supplement mode of the screen is a normal light supplement mode; when the temperature of the battery is between a first preset temperature threshold and a second preset temperature threshold, determining that the light supplement mode of the screen is a low-brightness light supplement mode;
when the determined light supplement mode is the low-brightness light supplement mode, controlling the screen to supplement light according to the determined light supplement mode, including:
controlling the screen to display at a second brightness, wherein the second brightness is higher than an original brightness and lower than a first brightness, the original brightness is the brightness of the screen before the camera is turned on, and the first brightness is the brightness corresponding to the normal supplementary lighting mode;
the controlling the camera to capture an image and generate a photograph includes:
determining the length of the exposure time according to the second brightness, wherein the second brightness and the length of the exposure time are in an inverse proportion relation;
comparing the exposure time length with the maximum safe exposure time length, controlling the camera to capture an image according to the comparison result, and generating a picture; and the limit safe exposure time length is the exposure time length of the slowest and clear-picture one-time shutter during shooting.
8. The apparatus of claim 7, wherein the controlling the camera to capture the image and generate the picture according to the comparison result comprises:
when the comparison result shows that the exposure time length is less than or equal to the limit safe exposure time length, controlling the camera to capture an image according to the exposure time length and generating a picture;
when the comparison result shows that the exposure time length is greater than the limit safe exposure time length, calculating a quotient of the exposure time length divided by the limit safe exposure time length and rounding up to obtain an exposure time N; and controlling the camera to continuously capture N images according to the limit safe exposure time length, and synthesizing a picture according to the N images.
9. A mobile terminal, characterized in that the mobile terminal integrates the device for taking pictures based on screen supplementary lighting according to any one of claims 7 to 8.
10. A computer-readable storage medium, on which a computer program is stored, wherein the program, when executed by a processor, implements the method for photographing based on screen fill lighting according to any one of claims 1 to 6.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810091096.5A CN108111773B (en) | 2016-02-15 | 2016-02-15 | Photographing method and device based on screen supplementary lighting, mobile terminal and storage medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610086334.4A CN105554412B (en) | 2016-02-15 | 2016-02-15 | A kind of photographic method based on screen light filling, device and mobile terminal |
| CN201810091096.5A CN108111773B (en) | 2016-02-15 | 2016-02-15 | Photographing method and device based on screen supplementary lighting, mobile terminal and storage medium |
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| CN201610086334.4A Division CN105554412B (en) | 2016-02-15 | 2016-02-15 | A kind of photographic method based on screen light filling, device and mobile terminal |
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| CN201610086334.4A Expired - Fee Related CN105554412B (en) | 2016-02-15 | 2016-02-15 | A kind of photographic method based on screen light filling, device and mobile terminal |
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| CN105979125B (en) * | 2016-06-15 | 2019-09-24 | 惠州Tcl移动通信有限公司 | A kind of photographic method and system based on screen light filling |
| CN106027899A (en) * | 2016-06-24 | 2016-10-12 | 惠州Tcl移动通信有限公司 | Camera self-photographing processing method and system based on mobile terminal |
| CN106170042A (en) * | 2016-07-14 | 2016-11-30 | 北京小米移动软件有限公司 | Light compensation method and device, electronic equipment |
| CN106572246B (en) * | 2016-10-31 | 2020-11-17 | 太仓市昊博技术服务有限公司 | Camera opening device, terminal and camera opening method |
| CN107786817B (en) * | 2017-10-20 | 2019-10-18 | 维沃移动通信有限公司 | A kind of photographic method and mobile terminal |
| CN107911585B (en) * | 2017-11-28 | 2020-06-09 | 维沃移动通信有限公司 | Image processing method and device of mobile terminal and mobile terminal |
| US11493967B2 (en) | 2018-06-01 | 2022-11-08 | Interdigital Madison Patent Holdings, Sas | Thermal shutdown with hysteresis |
| CN109068116B (en) * | 2018-08-31 | 2021-01-22 | 青岛海信移动通信技术股份有限公司 | Image processing method and device based on supplementary lighting, mobile terminal and storage medium |
| CN111915529B (en) * | 2020-08-05 | 2024-06-21 | 广州市百果园信息技术有限公司 | Dim light enhancement method and device for video, mobile terminal and storage medium |
| CN112866582B (en) * | 2021-04-23 | 2021-11-05 | 北京金和网络股份有限公司 | Sensitization processing method, device and equipment |
| CN115484393B (en) * | 2021-06-16 | 2023-11-17 | 荣耀终端有限公司 | Abnormality prompting method and electronic equipment |
| CN113422893B (en) * | 2021-06-21 | 2022-10-14 | 杭州网易智企科技有限公司 | Image acquisition method and device, storage medium and mobile terminal |
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| CN108111773A (en) | 2018-06-01 |
| CN105554412B (en) | 2018-03-16 |
| CN105554412A (en) | 2016-05-04 |
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