CN105072338A - Method and device for adjusting safe shutter time of photographing terminal - Google Patents
Method and device for adjusting safe shutter time of photographing terminal Download PDFInfo
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- CN105072338A CN105072338A CN201510468146.3A CN201510468146A CN105072338A CN 105072338 A CN105072338 A CN 105072338A CN 201510468146 A CN201510468146 A CN 201510468146A CN 105072338 A CN105072338 A CN 105072338A
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- time
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- photo terminal
- shutter time
- aperture time
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Abstract
Embodiments of the invention disclose a method and a device for adjusting safe shutter time of a photographing terminal. The method comprises the steps of detecting a zooming command applied on the photographing terminal by a user; when the zooming command is detected, acquiring a zoom ratio; and adjusting the safe shutter time of the photographing terminal to a target safe shutter time according to the zoom ratio, so as to take a clear photo according to the target safe shutter time. According to the method, when the safe shutter time of the photographing terminal is determined, the current safe shutter time of the photographing terminal is generated according to both the current environment brightness and the impact of shaking due to zooming operation by the user on the safe shutter time; and the safe shutter time is adjusted according to the zoom ratio, and the safe shutter time of the photographing terminal is adjusted to the target safe shutter time, so that the clearness of the photographed picture is guaranteed, and the photographing success rate is improved.
Description
Technical field
The embodiment of the present invention relates to camera technique field, particularly relates to method of adjustment and the device of a kind of photo terminal safety shutter time.
Background technology
Along with the development of electronic technology, digital photographing equipment (such as, digital camera or have the mobile phone etc. of digital camera head) gos deep into huge numbers of families, becomes the indispensable instrument that everybody records beautiful natural views, data plate life splendid moment.
The slowest aperture time of sharp image can be obtained during the representative shooting of safety shutter time, namely once aperture time is slower than the safety shutter time, will the image fog causing shooting be easy to.Generally, the safety shutter time is defined as the inverse of focal length.Such as, when using the camera lens of 200mm focal length to take, ensure that the photo taking out is not fuzzy, so the safety shutter time at least will faster than 1/200 second.
In the process of shooting, if user has carried out zoom operation, inevitably will produce some shakes, these shakes can produce certain impact to the definition of filmed image, do not consider when determining the safety shutter time shake that zoom operation brings in prior art, cause the image of shooting clear not and desirable, reduce the success rate of shooting.
Summary of the invention
The embodiment of the present invention provides method of adjustment and the device of a kind of photo terminal safety shutter time, the shake that zoom produces is taken into account when determining the safety shutter time, to ensure the definition of filmed image, improves the success rate of shooting.
In first aspect, embodiments provide the method for adjustment of a kind of photo terminal safety shutter time, comprising:
Detect the zoom instructions that user acts on photo terminal;
When described zoom instructions being detected, obtain zoom ratio;
According to described zoom ratio, the safety shutter time of described photo terminal is adjusted to targeted security aperture time, to make to shoot image clearly according to described targeted security aperture time.
In second aspect, embodiments provide the adjusting device of a kind of photo terminal safety shutter time, comprising:
Zoom instructions detecting unit, acts on the zoom instructions of photo terminal for detecting user;
Zoom ratio acquiring unit, for when described zoom instructions being detected, obtains zoom ratio;
Safety shutter time adjustment unit, for the safety shutter time of described photo terminal being adjusted to targeted security aperture time according to described zoom ratio, to make to shoot image clearly according to described targeted security aperture time.
The method of adjustment of the photo terminal safety shutter time that the embodiment of the present invention provides and device, when determining the safety shutter time of photo terminal, the current safety aperture time of photo terminal is not only generated according to current environmental light brightness, the impact of shake on the safety shutter time also brought by user's zoom operation is taken into account, according to the zoom ratio adjustment safety shutter time, the safety shutter time of photo terminal is adjusted to targeted security aperture time, to make to shoot image clearly according to described targeted security aperture time, ensure that the definition of filmed image, improve the success rate of shooting.
Accompanying drawing explanation
Fig. 1 is the flow chart of the method for adjustment of the photo terminal safety shutter time that the embodiment of the present invention one provides;
Fig. 2 is the flow chart of the method for adjustment of the photo terminal safety shutter time that the embodiment of the present invention two provides;
Fig. 3 is the structural representation of the adjusting device of the photo terminal safety shutter time that the embodiment of the present invention three provides.
Embodiment
In order to make the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the specific embodiment of the invention is described in further detail.Be understandable that, specific embodiment described herein is only for explaining the present invention, but not limitation of the invention.It also should be noted that, for convenience of description, illustrate only part related to the present invention in accompanying drawing but not full content.Before in further detail exemplary embodiment being discussed, it should be mentioned that some exemplary embodiments are described as the process or method described as flow chart.Although operations (or step) is described as the process of order by flow chart, many operations wherein can be implemented concurrently, concomitantly or simultaneously.In addition, the order of operations can be rearranged.Described process can be terminated when its operations are completed, but can also have the additional step do not comprised in the accompanying drawings.Described process can correspond to method, function, code, subroutine, subprogram etc.
Embodiment one
Fig. 1 gives the flow chart of the method for adjustment of the photo terminal safety shutter time that the embodiment of the present invention one provides, the method of the present embodiment can be performed by the adjusting device of photo terminal safety shutter time, this device realizes by the mode of hardware and/or software, and the part that described device can be used as photo terminal is arranged on described photo terminal inside.As shown in Figure 1, the method for adjustment of photo terminal safety shutter time that the present embodiment provides comprises the following steps:
Step 101, detect user and act on the zoom instructions of photo terminal.
Photo terminal described in the present embodiment is including but not limited to mobile phone, panel computer, notebook, digital camera.
Wherein, described zoom instructions is the instruction for zoom, the zoom instructions that described user acts on photo terminal can refer to as the zoom instructions of carrying out two finger-expandings and shrinkage operation generation on photo terminal view-finder for user's both hands, also can be the zoom instructions produced by the zoom amplitude bar on slip photo terminal view-finder, also can be the zoom instructions that the zoom button clicked or press on photo terminal or other ZSWs produce.
Step 102, when described zoom instructions being detected, obtain zoom ratio.
Photo terminal exist user act on the zoom instructions of photo terminal time, the zoom operation of user will produce certain shake to photo terminal, degree (jitter level) and the zoom ratio of described shake become one just compared with relation, described jitter level can represent with N*f, wherein, N is zoom ratio, f is setup parameter, certainly, the relation of jitter level and zoom ratio is not limited only to above-mentioned N*f form, can be determined the relation of described jitter level and zoom ratio in the operation of reality by the data in the actual service condition of counting user.
Step 103, according to described zoom ratio, the safety shutter time of described photo terminal is adjusted to targeted security aperture time, to make to shoot image clearly according to described targeted security aperture time.
When determining the safety shutter time of photo terminal, the shake that the zoom operation of user brings is taken into account, the zoom ratio corresponding according to user's zoom operation adjusts the safety shutter time of photo terminal, the safety shutter time of described photo terminal is adjusted to final targeted security aperture time, to reach the technique effect shooting sharp image according to described targeted security aperture time.
The method of adjustment of the photo terminal safety shutter time that the embodiment of the present invention provides, when determining the safety shutter time of photo terminal, the current safety aperture time of photo terminal is not only generated according to current environmental light brightness, the impact of shake on the safety shutter time also brought by user's zoom operation is taken into account, according to the zoom ratio adjustment safety shutter time, the safety shutter time of photo terminal is adjusted to targeted security aperture time, to make to shoot image clearly according to described targeted security aperture time, ensure that the definition of filmed image, improve the success rate of shooting.
Embodiment two
Fig. 2 gives the schematic flow sheet of the method for adjustment of the photo terminal safety shutter time that the embodiment of the present invention two provides.The present embodiment is optimized based on embodiment one, in the present embodiment, is specifically optimized for according to described zoom ratio the safety shutter time adjusting described photo terminal: the current safety aperture time obtaining photo terminal; According to described current safety aperture time and described zoom ratio, the safety shutter time of described photo terminal is adjusted to targeted security aperture time, to make to shoot image clearly according to described targeted security aperture time.Further, will according to described current safety aperture time and described zoom ratio, the safety shutter time of described photo terminal is adjusted to targeted security aperture time be specifically optimized for: according to described current safety aperture time and described zoom ratio, based on following Tuning function, the safety shutter time of photo terminal is adjusted to targeted security aperture time: T=(1-N*f) * T
0, wherein, T is targeted security aperture time, and N is zoom ratio, and f is setup parameter, T
0for current safety aperture time, N*f be greater than 0 and be less than 1 value.
Accordingly, as shown in Figure 2, the method for adjustment of photo terminal safety shutter time that the present embodiment provides comprises the following steps:
Step 201, detect user and act on the zoom instructions of photo terminal.
Step 202, when described zoom instructions being detected, obtain zoom ratio.
The current safety aperture time of step 203, acquisition photo terminal.
Further comprising the steps of before this step: the current safety aperture time generating photo terminal according to the brightness in current environment.
Step 204, according to described current safety aperture time and described zoom ratio, the safety shutter time of described photo terminal is adjusted to targeted security aperture time, to make to shoot image clearly according to described targeted security aperture time.
According to described current safety aperture time and described zoom ratio, the safety shutter time of photo terminal is regulated, shortens the safety shutter time according to zoom ratio, such as, current safety aperture time is become 1/ original zoom ratio doubly, using as targeted security aperture time.
This step specifically can comprise: according to described current safety aperture time and described zoom ratio, based on following Tuning function, the safety shutter time of photo terminal is adjusted to targeted security aperture time, to make to shoot image clearly according to described targeted security aperture time:
T＝(1-N*f)*T
0，
Wherein, T is targeted security aperture time, and N is zoom ratio, and f is setup parameter, T
0for current safety aperture time, N*f be greater than 0 and be less than 1 value.
Concrete, photo terminal exist user act on the zoom operation of terminal time, the zoom operation of user will produce certain shake to photo terminal, jitter level and zoom ratio become one just compared with relation, namely the degree of jitter of zoom ratio larger photo terminal generation is larger, when determining the safety shutter time of photo terminal, the shake that the zoom operation of user brings is taken into account, with current safety aperture time T
0for benchmark, the zoom ratio N safety shutter time to photo terminal corresponding according to zoom operation regulates, by current safety aperture time T
0shorten N*f*T
0, the targeted security aperture time T namely getting photo terminal is (1-N*f) * T
0, take with this targeted security aperture time, the photo that definition is higher can be obtained, promote the success rate of shooting.
Preferably, the maximum zoom ratio N of photo terminal is less than at described zoom ratio N
maxtime, the value of described setup parameter f is 1/N
max.
It should be noted that, only provide according to described current safety aperture time T at this
0with described zoom ratio N, is adjusted to Tuning function: T=(1-N*f) * T under a kind of example of targeted security aperture time T the safety shutter time of photo terminal
0its objective is the regulate factors of zoom ratio corresponding for the zoom operation of user as the safety shutter time, the safety shutter time of photo terminal is regulated, described downward function can for represent arbitrarily the functional relation regulated the safety shutter time according to zoom ratio, and the present embodiment does not limit this.
The method of adjustment of the photo terminal safety shutter time that the present embodiment provides, when determining the safety shutter time of photo terminal, the current safety aperture time of photo terminal is not only generated according to current environmental light brightness, the impact of shake on the safety shutter time also brought by user's zoom operation is taken into account, according to the current safety aperture time got and zoom ratio, based on default downward function, the safety shutter time of photo terminal is adjusted to targeted security aperture time, to make to shoot image clearly according to described targeted security aperture time, ensure that the definition of filmed image, improve the success rate of shooting.
Embodiment three
Fig. 3 gives the structural representation of the adjusting device of the photo terminal safety shutter time that the embodiment of the present invention three provides.As shown in Figure 3, the adjusting device of photo terminal safety shutter time that the present embodiment provides comprises: zoom instructions detecting unit 31, zoom ratio acquiring unit 32 and safety shutter time adjustment unit 33.Wherein, described zoom instructions detecting unit 31, acts on the zoom instructions of photo terminal for detecting user; Zoom ratio acquiring unit 32, for when described zoom instructions being detected, obtains zoom ratio; Safety shutter time adjustment unit 33, for the safety shutter time of described photo terminal being adjusted to targeted security aperture time according to described zoom ratio, to make to shoot image clearly according to described targeted security aperture time.
Further, described safety shutter time adjustment unit 33 comprises:
Current safety aperture time obtains subelement, for obtaining the current safety aperture time of photo terminal;
Safety shutter time adjustment subelement, for according to described current safety aperture time and described zoom ratio, the safety shutter time of described photo terminal is adjusted to targeted security aperture time, to make to shoot image clearly according to described targeted security aperture time.
Further, described safety shutter time adjustment subelement specifically for:
According to described current safety aperture time and described zoom ratio, based on following Tuning function, the safety shutter time of photo terminal is adjusted to targeted security aperture time, to make to shoot image clearly according to described targeted security aperture time:
T＝(1-N*f)*T
0，
Wherein, T is targeted security aperture time, and N is zoom ratio, and f is setup parameter, T
0for current safety aperture time, N*f be greater than 0 and be less than 1 value.
Further, described safety shutter time adjustment unit 33 also comprises:
Current safety aperture time generates subelement, for before the current safety aperture time obtaining photo terminal, generates the current safety aperture time of photo terminal according to the brightness in current environment.
Further, the maximum zoom ratio N of photo terminal is less than at described zoom ratio N
maxtime, the value of described setup parameter f is 1/N
max.
The adjusting device of the photo terminal safety shutter time that the embodiment of the present invention provides can perform the method for adjustment of the photo terminal safety shutter time that any embodiment of the present invention provides, and possesses the corresponding functional module of manner of execution and beneficial effect.
The know-why that above are only preferred embodiment of the present invention and use.The invention is not restricted to specific embodiment described here, the various significant changes can carried out for a person skilled in the art, readjust and substitute all can not depart from protection scope of the present invention.Therefore, although be described in further detail invention has been by above embodiment, the present invention is not limited only to above embodiment, when not departing from the present invention's design, can also comprise other Equivalent embodiments more, and scope of the present invention is determined by the scope of claim.
Claims (10)
1. the method for adjustment of photo terminal safety shutter time, is characterized in that, comprising:
Detect the zoom instructions that user acts on photo terminal;
When described zoom instructions being detected, obtain zoom ratio;
According to described zoom ratio, the safety shutter time of described photo terminal is adjusted to targeted security aperture time, to make to shoot image clearly according to described targeted security aperture time.
2. method according to claim 1, is characterized in that, according to described zoom ratio, the safety shutter time of described photo terminal is adjusted to targeted security aperture time, comprises to make shooting image clearly according to described targeted security aperture time:
Obtain the current safety aperture time of photo terminal;
According to described current safety aperture time and described zoom ratio, the safety shutter time of described photo terminal is adjusted to targeted security aperture time, to make to shoot image clearly according to described targeted security aperture time.
3. method according to claim 2, is characterized in that, according to described current safety aperture time and described zoom ratio, the safety shutter time of described photo terminal is adjusted to targeted security aperture time and comprises:
According to described current safety aperture time and described zoom ratio, based on following Tuning function, the safety shutter time of photo terminal is adjusted to targeted security aperture time:
T＝(1-N*f)*T
0，
Wherein, T is targeted security aperture time, and N is zoom ratio, and f is setup parameter, T
0for current safety aperture time, N*f be greater than 0 and be less than 1 value.
4. method according to claim 2, is characterized in that, before obtaining the current safety aperture time of photo terminal, also comprises:
The current safety aperture time of photo terminal is generated according to the brightness in current environment.
5. method according to claim 3, is characterized in that, is less than the maximum zoom ratio N of photo terminal at described zoom ratio N
maxtime, the value of described setup parameter f is 1/N
max.
6. the adjusting device of photo terminal safety shutter time, is characterized in that, comprising:
Zoom instructions detecting unit, acts on the zoom instructions of photo terminal for detecting user;
Zoom ratio acquiring unit, for when described zoom instructions being detected, obtains zoom ratio;
Safety shutter time adjustment unit, for the safety shutter time of described photo terminal being adjusted to targeted security aperture time according to described zoom ratio, to make to shoot image clearly according to the described safety shutter time.
7. device according to claim 6, is characterized in that, described safety shutter time adjustment unit comprises:
Current safety aperture time obtains subelement, for obtaining the current safety aperture time of photo terminal;
Safety shutter time adjustment subelement, for obtain photo terminal current safety aperture time before according to described current safety aperture time and described zoom ratio, the safety shutter time of described photo terminal is adjusted to targeted security aperture time, to make to shoot image clearly according to the described safety shutter time.
8. device according to claim 7, is characterized in that, described safety shutter time adjustment subelement specifically for:
According to described current safety aperture time and described zoom ratio, based on following Tuning function, the safety shutter time of photo terminal is adjusted to targeted security aperture time, to make to shoot image clearly according to the described safety shutter time:
T＝(1-N*f)*T
0，
Wherein, T is targeted security aperture time, and N is zoom ratio, and f is setup parameter, T
0for current safety aperture time, N*f be greater than 0 and be less than 1 value.
9. method according to claim 7, is characterized in that, described safety shutter time adjustment unit also comprises:
Current safety aperture time generates subelement, for before the current safety aperture time obtaining photo terminal, generates the current safety aperture time of photo terminal according to the brightness in current environment.
10. device according to claim 8, is characterized in that, is less than the maximum zoom ratio N of photo terminal at described zoom ratio N
maxtime, the value of described setup parameter f is 1/N
max.
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| CN201510468146.3A CN105072338B (en) | 2015-07-31 | 2015-07-31 | A kind of method of adjustment and device of photo terminal safety shutter time |
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| CN201510468146.3A CN105072338B (en) | 2015-07-31 | 2015-07-31 | A kind of method of adjustment and device of photo terminal safety shutter time |
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| WO2022095012A1 (en) * | 2020-11-09 | 2022-05-12 | 深圳市大疆创新科技有限公司 | Shutter adjustment method and device, photography device, and movable platform |
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