CN107404616B - Photographing method for adjusting light sensitivity of camera, mobile terminal and storage device - Google Patents
Photographing method for adjusting light sensitivity of camera, mobile terminal and storage device Download PDFInfo
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- CN107404616B CN107404616B CN201710582180.2A CN201710582180A CN107404616B CN 107404616 B CN107404616 B CN 107404616B CN 201710582180 A CN201710582180 A CN 201710582180A CN 107404616 B CN107404616 B CN 107404616B
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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
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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
Abstract
The invention discloses a photographing method for adjusting the sensitivity of a camera, a mobile terminal and a storage device, wherein the method comprises the following steps: after the mobile terminal starts the camera, detecting whether an object in a picture of the camera is in a motion state; when the object is detected to be in a motion state, obtaining the motion speed of the current object, and obtaining the corresponding photosensitivity ISO according to the range of the motion speed; and comparing the photosensitivity ISO with the photosensitivity A in the automatic photographing mode, and controlling the camera to photograph by adopting the photosensitivity ISO when the photosensitivity ISO is greater than the photosensitivity A. The invention detects whether the object in the picture is in a moving state when the picture is started based on the automatic picture taking mode, and adjusts the photosensitive sensitivity of the camera according to the speed of the moving object when the object in the picture is in motion, thereby reducing the shutter time of picture taking, and realizing clear picture taking.
Description
Technical Field
The invention relates to the technical field of mobile terminal photographing, in particular to a photographing method for adjusting the light sensitivity of a camera, a mobile terminal and a storage device.
Background
With the rapid popularization of mobile terminals, mobile terminals have become essential entertainment tools in people's daily life, and especially, the function of taking pictures is essential for people's daily life, so that the storage of a large number of pictures after taking pictures is a great trouble for users.
In particular, due to the popularization of large-screen smart phones in mobile terminals, the photographing and imaging quality of smart phones is also more and more valued by consumers (users). However, many users can have a certain probability of fuzzy photographing probability in the photographing process of the mobile phone, and especially, when the users take a moving object, such as children, animals, or outside scenery, the users can have a fuzzy photographing phenomenon due to the shaking of the object or the mobile phone, and the situation cannot take a clear picture in the automatic mode.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
The present invention provides a photographing method, a mobile terminal and a storage device for adjusting the sensitivity of a camera, aiming at detecting whether an object in a picture is in a motion state when starting photographing through an automatic photographing mode based on the mobile terminal, and adjusting the sensitivity of the camera according to the speed of a moving object when the object in the picture is in motion, so as to reduce the shutter time for photographing, thereby realizing clear photographing.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a photographing method for adjusting the sensitivity of a camera, wherein the method comprises the following steps:
step A: after the mobile terminal starts the camera, detecting whether an object in a picture of the camera is in a motion state;
and B: when the object is detected to be in a motion state, obtaining the motion speed of the current object, and obtaining the corresponding photosensitivity ISO according to the range of the motion speed;
and C: and comparing the photosensitivity ISO with the photosensitivity A in the automatic photographing mode, and controlling the camera to photograph by adopting the photosensitivity ISO when the photosensitivity ISO is greater than the photosensitivity A.
The photographing method for adjusting the sensitivity of the camera, wherein the step a further comprises:
step S: the moving speed of the object is set into a plurality of ranges in advance through the mobile terminal, and each range is correspondingly set with a photosensitive sensitivity.
The photographing method for adjusting the sensitivity of the camera, wherein the step C further includes:
and when the photosensitivity ISO is less than or equal to the photosensitivity A in the automatic photographing mode, controlling the camera to keep the photosensitivity A in the automatic photographing mode for photographing.
The photographing method for adjusting the sensitivity of the camera comprises the following specific steps:
step A1: the mobile terminal starts a camera to enter a photographing preview mode;
step A2: whether the object in the picture is in a motion state is judged through the change of the light brightness in the picture in the preview mode.
The photographing method for adjusting the sensitivity of the camera, wherein the step B specifically includes:
step B1: when detecting that the object is in a motion state, starting a preset timer;
step B2: the timer sets a fixed time interval T, obtains the movement distance S of an object in a picture in the time range of T, and calculates the movement speed V = S/T;
step B3: and searching and acquiring the corresponding photosensitivity ISO according to the range of the motion speed V.
The photographing method for adjusting the sensitivity of the camera comprises the following specific steps:
step C1: presetting two photographing modes of a mobile terminal as an automatic photographing mode and a motion photographing mode respectively;
step C2: comparing the light sensitivity ISO in the motion photographing mode with the light sensitivity A in the automatic photographing mode;
step C3: and when the photosensitivity ISO is greater than the photosensitivity A in the automatic photographing mode, controlling the camera to switch from the automatic photographing mode to the motion photographing mode and photographing by using the photosensitivity A.
The photographing method for adjusting the light sensitivity of the camera comprises the step of setting a default photographing mode of the mobile terminal as an automatic photographing mode.
The photographing method for adjusting the light sensitivity of the camera is characterized in that the photographing mode of the mobile terminal is switched according to the light sensitivity ISO in the motion photographing mode and the light sensitivity A in the automatic photographing mode.
A mobile terminal, comprising: the camera system comprises a processor and a memory which is in communication connection with the processor, wherein the memory stores a computer program which is used for realizing the photographing method for adjusting the sensitivity of the camera when being executed; the processor is used for calling the computer program in the memory so as to realize the photographing method for adjusting the camera sensitivity.
A storage device, wherein the storage device stores a computer program executable to implement the photographing method for adjusting the sensitivity of a camera.
The invention discloses a photographing method for adjusting the sensitivity of a camera, a mobile terminal and a storage device, wherein the method comprises the following steps: after the mobile terminal starts the camera, detecting whether an object in a picture of the camera is in a motion state; when the object is detected to be in a motion state, obtaining the motion speed of the current object, and obtaining the corresponding photosensitivity ISO according to the range of the motion speed; and comparing the photosensitivity ISO with the photosensitivity A in the automatic photographing mode, and controlling the camera to photograph by adopting the photosensitivity ISO when the photosensitivity ISO is greater than the photosensitivity A. According to the invention, through an automatic photographing mode based on the mobile terminal, whether an object in a picture is in a motion state or not is detected when photographing is started, and when the object in the picture is in motion, the light sensitivity of the camera is adjusted according to the speed of the moving object, so that the shutter time for photographing is reduced, and clear photographing is realized.
Drawings
Fig. 1 is a flowchart of a photographing method for adjusting the sensitivity of a camera according to a preferred embodiment of the present invention.
Fig. 2 is a functional block diagram of the mobile terminal of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, a photographing method for adjusting the sensitivity of a camera according to a preferred embodiment of the present invention includes the following steps:
step S100, after the mobile terminal starts the camera, whether an object in a picture of the camera is in a motion state is detected.
Specifically, the S100 further includes: setting the motion speed of an object into a plurality of ranges in advance through the mobile terminal, and correspondingly setting a photosensitive sensitivity (ISO in a camera means the photosensitive sensitivity) in each range (ISO, when the light is dark, the shutter speed is reduced if ISO is adjusted to be high, namely, a shot picture is not blurred, higher ISO sensitivity is selected, and the same exposure amount can be obtained by using the faster shutter speed under the condition that the aperture is not changed); for example, if the motion speed V1 is in the first range, the motion speed V2 is in the second range, the motion speed V2 is in the second range, the motion speed V3 is in the third range, the motion speed V3 is in the third range, and the motion range and the light sensitivity are in direct proportion, that is, if the motion speed is higher, the corresponding light sensitivity is higher, and since an object in the preview screen moves faster and the photographed image is easier to blur, the light sensitivity needs to be improved to photograph a clearer picture.
Further, the step S100 specifically includes:
s101, the mobile terminal starts a camera to enter a photographing preview mode;
and S102, judging whether the object in the picture is in a motion state or not according to the change of the light brightness in the picture in the preview mode.
In the present invention, the determination of whether the object in the screen is in motion is preferentially performed by the change of the brightness of the light, but is not limited to this determination.
Step S200, when the object is detected to be in a motion state, obtaining the motion speed of the current object, and obtaining the corresponding photosensitivity ISO according to the range of the motion speed.
Specifically, the step S200 specifically includes:
s201, when detecting that an object is in a motion state, starting a preset timer;
s202, the timer sets a fixed time interval T, the moving distance S of the object in the picture is obtained within the time range of T, and the moving speed is calculated to be V = S/T;
s203, searching and acquiring the corresponding photosensitivity ISO according to the range of the motion speed V.
Specifically, after the camera is started, whether the picture object moves or not is detected, and when the picture object is detected to move, the moving speed V of the current object is analyzed and calculated, wherein the speed calculating method comprises the following steps: and setting a fixed time interval T, acquiring the moving distance S of the picture object in the time range of T, and representing the speed of the picture object by the moving distance S of the picture object in the time of T according to the linear relation between the speed and the distance V = S/T and the linear relation between V and S. In order to ensure that a moving object can take a picture clearly, corresponding sensitization sensitivity values are preset in different motion speed ranges, for example, the motion distance range at a time interval T is S1, then the motion speed is V1, the corresponding preset sensitivity is ISO1, the motion distance range is S2, then the motion speed is V2, the corresponding preset sensitivity is ISO2, and the like, so that clear pictures can be taken at different motion speeds.
And step S300, comparing the photosensitivity ISO with the photosensitivity A in the automatic photographing mode, and controlling the camera to photograph by adopting the photosensitivity ISO when the photosensitivity ISO is larger than the photosensitivity A.
Specifically, the default photographing mode of the mobile terminal is defaulted to the automatic photographing mode; and the photographing mode of the mobile terminal is switched according to the photosensitive sensitivity ISO in the motion photographing mode and the photosensitive sensitivity A in the automatic photographing mode. When the sensitivity ISO in the motion photographing mode is larger than the sensitivity A in the automatic photographing mode, the automatic photographing mode is automatically switched to the motion photographing mode, and photographing is carried out according to the sensitivity ISO corresponding to the motion speed in the motion photographing mode.
The step S300 further includes: and when the photosensitivity ISO is less than or equal to the photosensitivity A in the automatic photographing mode, controlling the camera to keep the photosensitivity A in the automatic photographing mode for photographing. Namely, it can be determined that the photosensitivity a in the automatic photographing mode can also satisfy the condition of clear photographing, so the mobile terminal maintains the automatic photographing mode.
Further, the step S300 specifically includes:
s301, presetting two photographing modes of the mobile terminal, namely an automatic photographing mode and a motion photographing mode;
s302, comparing the light sensitivity ISO in the motion photographing mode with the light sensitivity A in the automatic photographing mode;
and S303, when the photosensitivity ISO is greater than the photosensitivity A in the automatic photographing mode, controlling the camera to switch from the automatic photographing mode to the motion photographing mode and photographing by using the photosensitivity A.
In addition, when the speed of the mobile terminal according to the motion of the picture object exceeds a preset motion speed threshold value, the fuzzy of the photographed picture is caused, a larger photosensitive sensitivity ISO value is set for the mobile terminal in combination with the current speed, (different ISO values are set in different motion speed ranges), the minimum ISO value is used as far as possible on the premise that the moving picture is not fuzzy when being photographed, and therefore the clarity of the picture is guaranteed, and the effective control of image noise (high ISO sensitivity can cause high noise) is guaranteed.
The present invention also provides a mobile terminal, as shown in fig. 2, the mobile terminal includes: a processor (processor)10, a memory (memory)20, a communication Interface (Communications Interface)30, and a bus 40; wherein the content of the first and second substances,
the processor 10, the memory 20 and the communication interface 30 complete mutual communication through the bus 40;
the communication interface 30 is used for information transmission between communication devices of the mobile terminal;
the processor 10 is configured to call the computer program in the memory 20 to execute the method provided by the above method embodiments, for example, including: after the mobile terminal starts the camera, detecting whether an object in a picture of the camera is in a motion state; when the object is detected to be in a motion state, obtaining the motion speed of the current object, and obtaining the corresponding photosensitivity ISO according to the range of the motion speed; and comparing the photosensitivity ISO with the photosensitivity A in the automatic photographing mode, and controlling the camera to photograph by adopting the photosensitivity ISO when the photosensitivity ISO is greater than the photosensitivity A.
The invention also provides a storage device, wherein the storage device stores a computer program which can be executed to realize the photographing method for adjusting the camera sensitivity.
In summary, the present invention provides a photographing method, a mobile terminal and a storage device for adjusting sensitivity of a camera, wherein the method includes: after the mobile terminal starts the camera, detecting whether an object in a picture of the camera is in a motion state; when the object is detected to be in a motion state, obtaining the motion speed of the current object, and obtaining the corresponding photosensitivity ISO according to the range of the motion speed; and comparing the photosensitivity ISO with the photosensitivity A in the automatic photographing mode, and controlling the camera to photograph by adopting the photosensitivity ISO when the photosensitivity ISO is greater than the photosensitivity A. According to the invention, through an automatic photographing mode based on the mobile terminal, whether an object in a picture is in a motion state or not is detected when photographing is started, and when the object in the picture is in motion, the light sensitivity of the camera is adjusted according to the speed of the moving object, so that the shutter time for photographing is reduced, and clear photographing is realized.
Of course, it will be understood by those skilled in the art that all or part of the processes of the methods of the above embodiments may be implemented by a computer program instructing relevant hardware (such as a processor, a controller, etc.), and the program may be stored in a computer readable storage medium, and when executed, the program may include the processes of the above method embodiments. The storage medium may be a memory, a magnetic disk, an optical disk, etc.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (5)
1. A photographing method for adjusting the sensitivity of a camera is characterized by comprising the following steps: step A: after the mobile terminal starts the camera, detecting whether an object in a picture of the camera is in a motion state; the step A specifically comprises the following steps:
step A1: the mobile terminal starts a camera to enter a photographing preview mode;
step A2: judging whether an object in a picture is in a motion state or not through the change of the light brightness in the picture in the preview mode;
and B: when the object is detected to be in a motion state, obtaining the motion speed of the current object, and obtaining the corresponding photosensitivity ISO according to the range of the motion speed;
the step B specifically comprises the following steps:
step B1: when detecting that the object is in a motion state, starting a preset timer;
step B2: the timer sets a fixed time interval T, obtains the movement distance S of an object in a picture in the time range of T, and calculates the movement speed V to be S/T;
step B3: searching and acquiring a corresponding photosensitivity ISO according to the range of the motion speed V; and C: comparing the light sensitivity ISO with the light sensitivity A in the automatic photographing mode, and controlling a camera to photograph by adopting the light sensitivity ISO when the light sensitivity ISO is larger than the light sensitivity A;
the step C specifically comprises the following steps:
step C1: presetting two photographing modes of a mobile terminal as an automatic photographing mode and a motion photographing mode respectively;
step C2: comparing the light sensitivity ISO in the motion photographing mode with the light sensitivity A in the automatic photographing mode;
step C3: when the photosensitivity ISO is larger than the photosensitivity A in the automatic photographing mode, the camera is controlled to be switched to the motion photographing mode from the automatic photographing mode and photograph with the photosensitivity ISO, so that the exposure time is shortened, and the clarity of a photographed picture is guaranteed;
the step C further comprises the following steps:
when the photosensitivity ISO is smaller than or equal to the photosensitivity A in the automatic photographing mode, controlling the camera to keep the photosensitivity A in the automatic photographing mode for photographing;
the photographing mode of the mobile terminal is switched according to the size of the photosensitive sensitivity ISO in the motion photographing mode and the photosensitive sensitivity A in the automatic photographing mode;
when the mobile terminal causes the blur of the photographed picture according to the fact that the moving speed of the picture object exceeds a preset moving speed threshold value, a larger photosensitive sensitivity ISO value is set for the mobile terminal in combination with the current speed, and the minimum ISO value is used as far as possible on the premise that the moving picture is not blurred when being photographed, so that the picture is guaranteed to be clear, and the effective control of the image noise is guaranteed.
2. The method of claim 1, wherein the step a is preceded by the steps of:
step S: the moving speed of the object is set into a plurality of ranges in advance through the mobile terminal, and each range is correspondingly set with a photosensitive sensitivity.
3. The method as claimed in claim 1, wherein the default photographing mode of the mobile terminal is an automatic photographing mode.
4. A mobile terminal, comprising: a processor, a memory communicatively connected to the processor, the memory storing a computer program for, when executed, implementing the method of any of claims 1-3; the processor is configured to invoke a computer program in the memory to implement the method of any of claims 1-3.
5. A storage device, characterized in that the storage device stores a computer program executable for implementing the method according to any one of claims 1-3.
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| CN201710582180.2A CN107404616B (en) | 2017-07-17 | 2017-07-17 | Photographing method for adjusting light sensitivity of camera, mobile terminal and storage device |
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| CN107404616A CN107404616A (en) | 2017-11-28 |
| CN107404616B true CN107404616B (en) | 2020-06-09 |
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| CN109714539B (en) * | 2019-01-25 | 2021-05-18 | Oppo广东移动通信有限公司 | Image acquisition method and device based on gesture recognition and electronic equipment |
| CN109688340A (en) * | 2019-01-25 | 2019-04-26 | Oppo广东移动通信有限公司 | Time for exposure control method, device, electronic equipment and storage medium |
| CN114268743A (en) * | 2020-09-16 | 2022-04-01 | 北京小米移动软件有限公司 | Image acquisition method, device, equipment and storage medium |
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| CN104519282A (en) * | 2014-12-09 | 2015-04-15 | 小米科技有限责任公司 | Image shooting method and device |
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| CN106657805A (en) * | 2017-01-13 | 2017-05-10 | 广东欧珀移动通信有限公司 | Shooting method in movement and mobile terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004361486A (en) * | 2003-06-02 | 2004-12-24 | Nikon Corp | Digital still camera |
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| CN104270565A (en) * | 2014-08-29 | 2015-01-07 | 小米科技有限责任公司 | Image shooting method and device and equipment |
| CN104519282A (en) * | 2014-12-09 | 2015-04-15 | 小米科技有限责任公司 | Image shooting method and device |
| CN105898143A (en) * | 2016-04-27 | 2016-08-24 | 维沃移动通信有限公司 | Moving object snapshotting method and mobile terminal |
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