CN103870257A - Continuous focusing method and device - Google Patents
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- CN103870257A CN103870257A CN201210538793.3A CN201210538793A CN103870257A CN 103870257 A CN103870257 A CN 103870257A CN 201210538793 A CN201210538793 A CN 201210538793A CN 103870257 A CN103870257 A CN 103870257A
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Abstract
The invention is applicable to the technical field of mobile terminals and provides a continuous focusing method and device. The method includes receiving a focusing order and triggering a camera in a mobile terminal to enter a focusing state; determining whether the mobile terminal moves or not, wherein the movement includes at least one kind of displacement or rotation; canceling the focusing state if the mobile terminal moves; triggering the camera in the mobile terminal to perform focusing operation again. According to the method, if the mobile terminal moves when the camera is in the focusing state, the current focusing state is cancelled, focusing is performed again, and thereby, the continuous focusing function of the camera can be achieved. The continuous focusing method is not limited by special software and hardware environment of the mobile terminal any more, the compatibility is excellent, and thereby, the shooting efficiency of the mobile terminal is greatly improved.
Description
Technical field
The invention belongs to technical field of mobile terminals, relate in particular to a kind of continuous focusing method and device.
Background technology
Along with continuous lifting and the intelligentized development of software of mobile terminal hardware configuration, the camera function of the mobile terminal such as mobile phone, panel computer from strength to strength, can substitute traditional card camera completely, meet the demand of taking pictures in user's daily life, therefore, increasing user's choice for use mobile terminal is recorded visual angle at one's side.
Continuous focusing is as a kind of camera function of practicality, at camera during in focusing state (focus operation complete after and before shutter presses), record focusing object, once mobile terminal has produced displacement or with the distance of focusing object, change has occurred, directly under current focusing state, drives camera camera lens automatically adjusts, with the blur-free imaging of the focusing object that guarantees to record.By continuous focusing function, focus can remain on the shooting body always, is applicable to very much the object in taking moving.
But, increase income system as example take Android etc., the renewal speed of Android system is maked rapid progress, and the model of the mobile terminal of support Android system is multifarious especially, screen size, hardware configuration are all different, the mobile terminal segment problem that makes to move Android system is serious, and the incompatible situation of application program happens occasionally.Based on above-mentioned situation, if adopt prior art to realize mobile focusing, the type that can cause having need to repeatedly be focused and repeatedly can normally be found a view, and some types even there will be the stuck situation of process Program of again focusing, cause user cannot continue operation, greatly reduce shooting efficiency.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of continuous focusing method, is intended to solve the increase income mobile terminal segment situation of system of current support serious, and camera applications is incompatible, causes taking the problem of Efficiency Decreasing.
The embodiment of the present invention is achieved in that a kind of continuous focusing method, comprising:
Receive focusing instruction, the camera in triggering mobile terminals enters focusing state;
Judge whether described mobile terminal produces motion, described motion comprises at least one in displacement or rotation;
If described mobile terminal produces motion, cancel described focusing state;
The camera triggering in described mobile terminal re-starts focusing operation.
Another object of the embodiment of the present invention is to provide a kind of continuous focusing device, comprising:
Focusing command reception unit, for receiving focusing instruction, the camera in triggering mobile terminals enters focusing state;
Judging unit, for judging whether described mobile terminal produces motion, described motion comprises at least one in displacement or rotation;
Cancel unit, if produce motion for described mobile terminal, cancel described focusing state;
Trigger element, re-starts focusing operation for triggering the camera of described mobile terminal.
In embodiments of the present invention, if mobile terminal has produced displacement during in focusing state at camera, cancel current focusing state, re-start focusing again, to realize the continuous focusing function of camera, the continuous focusing method that the embodiment of the present invention provides is no longer limited to specific mobile terminal hardware environment, possesses good compatibility, has greatly improved thus the shooting efficiency of mobile terminal.
Accompanying drawing explanation
Fig. 1 is the realization flow figure of the continuous focusing method that provides of the embodiment of the present invention;
Fig. 2 is the specific implementation process flow diagram of the continuous focusing method step S102 that provides of the embodiment of the present invention;
Fig. 3 is the specific implementation process flow diagram of the continuous focusing method step S102 that provides of another embodiment of the present invention;
Fig. 4 is the specific implementation process flow diagram of the continuous focusing method step S104 that provides of the embodiment of the present invention;
Fig. 5 A is the continuous focusing method effect schematic diagram that prior art provides;
Fig. 5 B is the continuous focusing method effect schematic diagram that the embodiment of the present invention provides;
Fig. 6 is the structured flowchart of the continuous focusing device that provides of the embodiment of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
In embodiments of the present invention, if mobile terminal has produced motion during in focusing state at camera, cancel current focusing state, re-start focusing again, to realize the continuous focusing function of camera, the continuous focusing method that the embodiment of the present invention provides is no longer limited to specific mobile terminal hardware environment, possesses good compatibility, has greatly improved thus the shooting efficiency of mobile terminal.
Above-mentioned camera can be for running on the camera application program in the mobile terminal such as mobile phone, panel computer, and go for the terminal operating systems such as IOS, Android or Windows, user controls the first-class imaging device of shooting being integrated in mobile terminal by operating above-mentioned camera application program, thereby realizes the action of taking pictures or make a video recording of mobile terminal.
Fig. 1 shows the realization flow of the continuous focusing method that the embodiment of the present invention provides, and details are as follows:
In step S101, receive focusing instruction, the camera in triggering mobile terminals enters focusing state.
When the camera in mobile terminal starts, and by after button or touch event detected receiving focusing instruction, trigger the focus operation of camera, now, camera in mobile terminal starts automatic focusing for the focusing object in focusing frame, regulate the imaging of focusing object in imageing sensor (Sensor) by stretching camera lens, until be adjusted to imaging effect the most clearly.In the present embodiment, the focusing state that the camera in triggering mobile terminals enters, refers in particular to after above-mentioned focus operation completes, and before the shutter action of camera carries out, focusing object keeps the duty of blur-free imaging on imageing sensor.
In step S102, judge whether described mobile terminal produces motion, described motion comprises at least one in displacement or rotation.
In the present embodiment, the motion that mobile terminal produces includes but not limited to that displacement, rotation or the displacement of mobile terminal adds the mode of motion of rotation.Wherein, displacement comprises the movement of mobile terminal in the vertical direction, in horizontal direction or three dimensions either direction, and rotation is the curvilinear motion that mobile terminal does around an axle in three dimensions either direction.Particularly, can detect mobile terminal by acceleration induction device built-in in mobile terminal and whether produce position, can detect mobile terminal by gyroscope built-in in mobile terminal and whether produce rotation, under normal conditions, in mobile terminal, especially intelligent mobile terminal, all built-in induction installation such as above-mentioned acceleration induction device and gyroscope, relevant detection mode will be elaborated in subsequent embodiment, not repeat them here.
In step S103, if described mobile terminal produces motion, cancel described focusing state.
In the present embodiment, produce motion once judge mobile terminal by the induction installation in the mobile terminals such as acceleration induction device or gyroscope, cancel the current focusing state of camera in mobile terminal, no longer record the dependent imaging parameter that produces blur-free imaging on imageing sensor before this.
In step S104, the camera triggering in described mobile terminal re-starts focusing operation.
Cancel in mobile terminal after the focusing state of camera at step S103, and then at step S104, camera in the triggering mobile terminals operation of focusing again, to make the camera in mobile terminal automatically focus for the focusing object of focusing in frame after motion of mobile terminals.
Pass through above-mentioned steps, do not need can realize easily the continuous focusing function of camera in mobile terminal by the record object of focusing, make the continuous focusing function of camera in mobile terminal no longer be limited to specific mobile terminal hardware environment, possess good compatibility, greatly improved thus the shooting efficiency of mobile terminal.
As one embodiment of the present of invention, can judge whether mobile terminal has produced displacement by acceleration induction device, Fig. 2 shows the specific implementation flow process of the continuous focusing method step S102 that the embodiment of the present invention provides, and details are as follows:
In step S201, by the accekeration of mobile terminal described in acceleration induction device Real-time Obtaining.
Wherein, acceleration transducer is built in mobile terminal, can measure mobile terminal and in accelerator, act on the power on mobile terminal, thereby get the acceleration of mobile terminal in either direction according to the result of measuring, thereby induce mobile terminal and whether produced in one direction acceleration, induce mobile terminal and whether produced displacement.
In step S202, judge whether the accekeration of described mobile terminal in the first Preset Time is greater than the first predetermined threshold value.
In the present embodiment, the first predetermined threshold value can be by systemic presupposition, also can be set voluntarily in system according to self use habit by user.The infinitesimal displacement that the setting of the first predetermined threshold value can ignore mobile terminal for example, because the behavioral trait of environmental factor (strong wind weather) or human body (for example people can not in static state completely) and cause, long-term experiment by person skilled is observed the first predetermined threshold value scope that meets user's normal operating condition of determining, and sets by systemic presupposition or user and within the scope of this, determine the first suitable predetermined threshold value.
In the present embodiment, judge whether the accekeration of mobile terminal in the first Preset Time is all greater than the first predetermined threshold value, can avoid in the time that user temporarily moves mobile terminal away focusing position the unnecessary cancellation that mobile terminal the carries out focus operation again of focusing.
In step S203, when the accekeration of described mobile terminal in the first Preset Time is all greater than described the first predetermined threshold value, judge that described mobile terminal produces displacement.
In the present embodiment, in the time judging the accekeration of mobile terminal in the first Preset Time and be greater than the first predetermined threshold value, can determine mobile terminal and produce displacement, now, scenery in mobile terminal camera view-finder changes, and be arranged in the also relative changes of focusing object of focusing frame, cancel current focusing state, again focus.
As another embodiment of the present invention, can judge whether mobile terminal has produced rotation by gyroscope, Fig. 3 shows the specific implementation flow process of the continuous focusing method step S102 that the embodiment of the present invention provides, and details are as follows:
In step S301, by the angular acceleration values of mobile terminal described in gyroscope Real-time Obtaining.
Wherein, gyroscope is built in mobile terminal, can pass through MEMS (micro electro mechanical system) (Micro-Electro-Mechanical Systems, MEMS) technique realizes, its actual first-class sensor of imitating x axle, y axle, three angles of z axle in three-dimensional system of coordinate, to measure gyroscope relative to the situation of rotating in three-dimensional system of coordinate, and get the angular acceleration of mobile terminal in either direction according to the result of measuring, thereby induce mobile terminal and whether produced in one direction angular acceleration, induce mobile terminal and whether produced rotation.
In step S302, judge whether the angular acceleration values of described mobile terminal in the second Preset Time is greater than the second predetermined threshold value.
In the present embodiment, the second predetermined threshold value can be by systemic presupposition, also can be set voluntarily in system according to self use habit by user.The very small angles rotation that the setting of the second predetermined threshold value can ignore mobile terminal for example, because the behavioral trait of environmental factor (strong wind weather) or human body (for example people can not in static state completely) and cause, long-term experiment by person skilled is observed the second predetermined threshold value scope that meets user's normal operating condition of determining, and sets by systemic presupposition or user and within the scope of this, determine the second suitable predetermined threshold value.
In the present embodiment, judge whether the angular acceleration values of mobile terminal in the second Preset Time is all greater than the second predetermined threshold value, can avoid in the time that user temporarily moves mobile terminal away focusing position the unnecessary cancellation that mobile terminal the carries out focus operation again of focusing.
In step S303, when the angular acceleration values of described mobile terminal in the second Preset Time is all greater than described the second predetermined threshold value, judge that described mobile terminal produces rotation.
In the present embodiment, in the time judging the angular acceleration values of mobile terminal in the second Preset Time and be greater than the second predetermined threshold value, can determine mobile terminal and produce rotation, now, scenery in mobile terminal camera view-finder changes, and be arranged in the also relative changes of focusing object of focusing frame, cancel current focusing state, again focus.
As one embodiment of the present of invention, can be by opening corresponding induction installation in the occasion that need to carry out continuous focusing, and after camera function is finished using, close corresponding induction installation, to save the energy consumption of mobile terminal.Particularly, before step S101, after detecting that camera in mobile terminal enters focusing state, before judging whether mobile terminal produces motion, can start the built-in speed sensor of mobile terminal, wherein, speed sensor includes but not limited to acceleration induction device and gyroscope; Meanwhile, after step S104, by receiving camera out code, camera in turning-off mobile terminal, now, no longer needs Negotiation speed induction installation to complete the continuous focusing function of camera, therefore closing velocity induction installation, thereby the energy consumption of effectively having saved mobile terminal.
Fig. 4 shows the specific implementation process flow diagram of the continuous focusing method step S104 that the embodiment of the present invention provides, and details are as follows:
In step S401, judge whether described mobile terminal produces motion in the 3rd Preset Time.
In the present embodiment, judge whether mobile terminal produces motion in the 3rd Preset Time, can judge by the method described in Fig. 2 of the present invention and Fig. 3 embodiment of the present invention, and in the same manner, described motion includes but not limited to that displacement, rotation or the displacement of mobile terminal adds the mode of motion of rotation.
In step S402, when described mobile terminal does not produce motion in described the 3rd Preset Time, trigger the operation of again focusing of camera in described mobile terminal.
Particularly, camera in triggering mobile terminals is focused before operation again, by judging whether mobile terminal produces motion in the 3rd Preset Time, to confirm that mobile terminal remains static really, the operation of again focusing of the camera in triggering mobile terminals again after having confirmed, avoid in the time that camera motion is frequent, repeatedly carrying out invalid focusing operation, thereby effectively improved the accuracy of continuous focusing operation.
Fig. 5 A shows and adopts prior art to carry out the effect schematic diagram of continuous focusing, Fig. 5 B shows the effect schematic diagram of the continuous focusing method that the embodiment of the present invention provides, above-mentioned two effect schematic diagram are and complete after focus operation at rather dark place when mobile terminal, under focusing state, move to again the view-finder schematic diagram after bright and clear place, wherein, easily find out that Fig. 5 A is due to the continuous focusing method that does not adopt the embodiment of the present invention to provide, therefore for mobile terminal hardware or the incompatible situation of software, continuous focusing function cannot complete, in view-finder, do not carry out focus operation again, cause camera to maintain original focusing parameter, user cannot see picture clearly in view-finder, and after having adopted the continuous focusing method that the embodiment of the present invention provides, can cancel original focusing state, and re-execute focus operation, guarantee that the picture in view-finder can normally show according to the variation of light.
Fig. 6 shows the structured flowchart of the continuous focusing device that the embodiment of the present invention provides, and this device is arranged in the mobile terminal device such as mobile phone, panel computer, for moving the continuous focusing method described in Fig. 1 to Fig. 5 embodiment of the present invention.For convenience of explanation, only show the part relevant to the present embodiment.
With reference to Fig. 6, this device comprises:
Focusing command reception unit 61, receives focusing instruction, and the camera in triggering mobile terminals enters focusing state.
Judging unit 62, judges whether described mobile terminal produces motion, and described motion comprises at least one in displacement or rotation.
Cancel unit 63, if described mobile terminal produces motion, cancel described focusing state.
Alternatively, described judging unit 62 comprises:
First obtains subelement, the accekeration of mobile terminal described in Real-time Obtaining.
The first judgment sub-unit, judges whether the accekeration of described mobile terminal in the first Preset Time is all greater than the first predetermined threshold value.
First determines subelement, when the accekeration of described mobile terminal in the first Preset Time is all greater than described the first predetermined threshold value, determines that described mobile terminal produces displacement.
Alternatively, described judging unit 62 comprises:
Second obtains subelement, the angular acceleration values of mobile terminal described in Real-time Obtaining.
The second judgment sub-unit, judges whether the angular acceleration values of described mobile terminal in the second Preset Time is greater than the second predetermined threshold value.
Second determines subelement, when the angular acceleration values of described mobile terminal in the second Preset Time is all greater than described the second predetermined threshold value, judges that described mobile terminal produces rotation.
Alternatively, described device also comprises:
Start unit, toggle speed induction installation, described speed sensor comprises acceleration induction device or gyroscope.
Out code receiving element, receives camera out code, closes camera in described mobile terminal.
Closing unit, closes described speed sensor.
Alternatively, described trigger element 64 comprises:
The 3rd judgment sub-unit, judges whether described mobile terminal produces motion in the 3rd Preset Time.
Trigger subelement, when described mobile terminal does not produce motion in described the 3rd Preset Time, the camera triggering in described mobile terminal re-starts focusing operation.
In embodiments of the present invention, if mobile terminal has produced motion during in focusing state at camera, cancel current focusing state, re-start focusing again, to realize the continuous focusing function of camera, the continuous focusing method that the embodiment of the present invention provides is no longer limited to specific mobile terminal hardware environment, possesses good compatibility, has greatly improved thus the shooting efficiency of mobile terminal.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a continuous focusing method, is characterized in that, comprising:
Receive focusing instruction, the camera in triggering mobile terminals enters focusing state;
Judge whether described mobile terminal produces motion, described motion comprises at least one in displacement or rotation;
If described mobile terminal produces motion, cancel described focusing state;
The camera triggering in described mobile terminal re-starts focusing operation.
2. the method for claim 1, is characterized in that, described judge described mobile terminal whether produce motion comprise:
The accekeration of mobile terminal described in Real-time Obtaining;
Judge whether the accekeration of described mobile terminal in the first Preset Time is all greater than the first predetermined threshold value;
When the accekeration of described mobile terminal in the first Preset Time is all greater than described the first predetermined threshold value, determine that described mobile terminal produces displacement.
3. the method for claim 1, is characterized in that, described judge described mobile terminal whether produce motion comprise:
The angular acceleration values of mobile terminal described in Real-time Obtaining;
Judge whether the angular acceleration values of described mobile terminal in the second Preset Time is greater than the second predetermined threshold value;
When the angular acceleration values of described mobile terminal in the second Preset Time is all greater than described the second predetermined threshold value, determine that described mobile terminal produces rotation.
4. the method as described in claim 1 ~ 3 any one, is characterized in that, after the camera in described triggering mobile terminals enters focusing state, described judge whether described mobile terminal produces motion before, also comprise:
Toggle speed induction installation, described speed sensor comprises acceleration induction device or gyroscope;
Camera in the described mobile terminal of described triggering also comprises after re-starting focusing operation:
Receive camera out code, close camera in described mobile terminal;
Close described speed sensor.
5. the method for claim 1, is characterized in that, the camera in the described mobile terminal of described triggering re-starts focusing operation and comprises:
Judge whether described mobile terminal produces motion in the 3rd Preset Time;
When described mobile terminal does not produce motion in described the 3rd Preset Time, the camera triggering in described mobile terminal re-starts focusing operation.
6. a continuous focusing device, is characterized in that, comprising:
Focusing command reception unit, for receiving focusing instruction, the camera in triggering mobile terminals enters focusing state;
Judging unit, for judging whether described mobile terminal produces motion, described motion comprises at least one in displacement or rotation;
Cancel unit, if produce motion for described mobile terminal, cancel described focusing state;
Trigger element, re-starts focusing operation for triggering the camera of described mobile terminal.
7. device as claimed in claim 6, is characterized in that, described judging unit comprises:
First obtains subelement, for the accekeration of mobile terminal described in Real-time Obtaining;
The first judgment sub-unit, for judging whether the accekeration of described mobile terminal in the first Preset Time is all greater than the first predetermined threshold value;
First determines subelement, for being all greater than described the first predetermined threshold value when the accekeration of described mobile terminal in the first Preset Time, determines that described mobile terminal produces displacement.
8. device as claimed in claim 6, is characterized in that, described judging unit comprises:
Second obtains subelement, for the angular acceleration values of mobile terminal described in Real-time Obtaining;
The second judgment sub-unit, for judging whether the angular acceleration values of described mobile terminal in the second Preset Time is greater than the second predetermined threshold value;
Second determines subelement, for being all greater than described the second predetermined threshold value when the angular acceleration values of described mobile terminal in the second Preset Time, judges that described mobile terminal produces rotation.
9. the device as described in claim 6 ~ 8 any one, is characterized in that, described device also comprises:
Start unit, for toggle speed induction installation, described speed sensor comprises acceleration induction device or gyroscope;
Out code receiving element, for receiving camera out code, closes camera in described mobile terminal;
Closing unit, for closing described speed sensor.
10. device as claimed in claim 6, is characterized in that, described trigger element comprises:
The 3rd judgment sub-unit, for judging whether described mobile terminal produces motion in the 3rd Preset Time;
Trigger subelement, for not producing motion when described mobile terminal in described the 3rd Preset Time, the camera triggering in described mobile terminal re-starts focusing operation.
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Application publication date: 20140618 |