CN102478743A - Photographic device and control method thereof - Google Patents
Photographic device and control method thereof Download PDFInfo
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- CN102478743A CN102478743A CN201010570546.2A CN201010570546A CN102478743A CN 102478743 A CN102478743 A CN 102478743A CN 201010570546 A CN201010570546 A CN 201010570546A CN 102478743 A CN102478743 A CN 102478743A
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Abstract
The invention discloses a photographic device and a control method thereof. The control method comprises the following steps that the photographic device is enabled to enter a preset automatic photographic mode; the photographic device determines a shutter speed according to the moving speed of an object in a preview window of the photographic device; the photographic device determines an aperture according to a field depth of the object in the shooting direction of the photographic device; the photographic device judges whether exposure corresponding to the photographic device under the combination of the shutter speed and the aperture is enough or not; and if the exposure is enough, the photographic device makes a response to a shooting command to conduct shooting according to the shutter speed and the aperture. In order to taking pictures with a field depth effect, various shooting parameters such as the shutter speed and the aperture can be respectively determined in the preset automatic photographic mode. Therefore, the photographic device is simple and convenient to use by a user and the quality of taken pictures can be improved through the proper shutter speed and the proper aperture.
Description
Technical field
The present invention is relevant for a kind of electronic installation and control method thereof, and particularly relevant for a kind of photographic means and control method thereof.
Background technology
Camera focuses on extraneous image on egative film or the image sensing chip through camera lens, so that image can be by permanent preservation.In the evolution of camera, be divided into consumption-orientation camera and single-lens again, both difference are the setting of some acquisition parameters, for example are aperture or shutter speed.
In general, through manually setting this a little acquisition parameters, it is preferable to make single-lens take the quality of image of coming.Yet, becoming the principle of phase based on camera, the setting of acquisition parameters is quite complicated, and for not being professional person's user generally, the setting of these a little acquisition parameters often causes user's puzzlement.For instance, in order to produce the photo with Deep Canvas, the user need set suitable aperture to the distance of object, judges that again ambient light adjusts shutter.Yet for dynamic object (as in the object that moves in the preview window of camera), the adjustment of aperture and shutter parameter can be not easy more.
Though the automatic shooting pattern of some camera can be taken this kind dynamic object through automatic adjustment acquisition parameters.Yet traditional automatic shooting pattern is to heighten shutter and use less aperture, though can avoid the one-tenth of object fuzzy mutually, can't produce the photo with Deep Canvas.
Summary of the invention
The present invention is relevant for a kind of photographic means and control method thereof; Can make the photographic means in the auto photographing pattern of entering produce shutter speed and the aperture that is suitable for dynamic object respectively; The user can be taken dynamic object easily, thereby the one-tenth of avoiding object is fuzzy mutually and produce the photo with Deep Canvas.
According to an aspect of the present invention, propose a kind of control method, be applicable to a photographic means.This control method comprises a plurality of steps.The auto photographing pattern that photographic means entering one is preset.According to the translational speed of an object in the preview window of photographic means, determine a shutter speed by photographic means.According to the depth of field of object on the shooting direction of photographic means, determine an aperture by photographic means.Judge by photographic means whether pairing exposure is enough under the combination of shutter speed and aperture., when exposure is enough, takes instruction in response to one and take by photographic means with shutter speed and aperture.
Described control method wherein, also comprises:
When the pairing exposure of this photographic means is not enough, by the light sensitivity of a photo-sensitive cell of this this photographic means of photographic means adjustment or open a flashlamp of this photographic means.
Described control method, wherein, in the step of this shutter speed that determines this photographic means, this preview window is an EVF, this shutter speed decides according to the pixel displacement amount of this object in the preview screen that this EVF provided.
Described control method, wherein, this depth of field is a preset value.
Described control method wherein, is comprised by the step of this photographic means according to this aperture of this this photographic means of depth of field decision of this object on the shooting direction of this photographic means:
Carry out multi-spot in the profile to this object, to obtain the difference of a maximum focal length and a minimum focus;
Obtain an estimated value as this depth of field according to this difference.
According to a further aspect in the invention, propose a kind of photographic means, comprise a pattern start unit, a preview window, shutter speed decision unit, aperture decision unit, an exposure judging unit, a shooting unit.The pattern start unit uses so that the auto photographing pattern that photographic means entering one is preset.The preview window is coupled to takes the unit for the photograph preview.Shutter speed decision unit is in order to determine a shutter speed according to the translational speed of an object in the preview window.Aperture decision unit is in order to determine an aperture according to object in a depth of field of taking on the direction.The exposure judging unit is in order to judge whether pairing exposure is enough under the combination of shutter speed and aperture.The shooting unit is used to the exposure judging unit to be judged when exposure is enough, takes instruction in response to one and takes with shutter speed and aperture.
Described photographic means, wherein, this shooting unit comprises a photo-sensitive cell or a flashlamp, and when this exposure judging unit judged that exposure is not enough, then this shooting unit was adjusted the light sensitivity of this photo-sensitive cell or is opened this flashlamp.
Described photographic means, wherein, this preview window is an EVF, this shutter speed decision unit decides according to the pixel displacement amount of this object in the preview screen that this EVF provided.
Described photographic means, wherein, this depth of field is a preset value.
Described photographic means wherein, also comprises:
One focusing unit is in order to focus;
Wherein, this aperture decision unit carries out multi-spot getting a maximum focal length and the difference of a minimum focus in the said focal length in order to control in the profile of this focusing unit to this object, and obtains an estimated value according to this difference and be used as this depth of field.
Compared with prior art, useful technique effect of the present invention comprises:
In the photographic means and control method thereof that the present invention proposes,, can in preset auto photographing pattern, determine various acquisition parameters respectively, like shutter speed and aperture in order to shoot photo with Deep Canvas.So, for the user, the use of photographic means will become simple and make things convenient for, and can improve the quality of taking photograph with suitable shutter speed and aperture.
Description of drawings
Fig. 1 illustrates the process flow diagram according to the control method of the photographic means of one embodiment of the invention;
Fig. 2 illustrates the calcspar according to an example of the sub-device of photograph of one embodiment of the invention;
Fig. 3 illustrates the synoptic diagram of an example of two continuous the preview windows of the photographic means of Fig. 2;
Fig. 4 illustrate into the focusing between the photographic means of relevant Fig. 2 and the object from the synoptic diagram of the depth of field;
Fig. 5 illustrates the detail flowchart according to the control method of the photographic means of one embodiment of the invention.
Wherein, Reference numeral:
200: photographic means
210: take the unit
212: photo-sensitive cell
214: flashlamp
220: the pattern start unit
230: the preview window
240: shutter speed decision unit
250: aperture decision unit
260: the focusing unit
270: the exposure judging unit
Cmd: take instruction
De: the depth of field
Dis: pixel displacement amount
Dir: take direction
F: focal length
F: aperture
Obj: object
OL: profile
Prev: preview screen
S: shutter speed
S110～S150, S510～S590: process step
Embodiment
For there is better understanding above-mentioned and other aspect of the present invention, hereinafter is special lifts preferred embodiment, and cooperates appended graphicly, elaborates as follows.
Please with reference to Fig. 1, it illustrates the process flow diagram according to the control method of the photographic means of one embodiment of the invention.This control method comprises a plurality of steps.In step S110, the auto photographing pattern that photographic means entering one is preset.In step S120, according to the translational speed of an object in the preview window of photographic means, determine a shutter speed by photographic means.In step S130, according to the depth of field of object on the shooting direction of photographic means, determine an aperture by photographic means.In step S140, judge by photographic means whether the pairing exposure of photographic means is enough under the combination of shutter speed and aperture.In step S150, when exposure is enough, takes instruction in response to one and take with shutter speed and aperture by photographic means.
According to the control method of the photographic means that the above embodiment of the present invention proposed, photographic means can determine various acquisition parameters respectively in preset auto photographing pattern, like shutter speed and aperture.So, just the user can be easily taken dynamic object (like the object that in the preview window, moves), and can use suitable shutter speed to avoid the one-tenth of object to blur mutually, and the use suitable aperture produce the photo with Deep Canvas.In other words, the shutter speed of present embodiment and aperture can be determined respectively that by the photographic means reference object theme (object) is clear so that the photo that this object is produced demonstrates, the Deep Canvas of blurred background under the combination of this shutter speed and aperture.So, can improve the ease of use and the simplification of photographic means.Now further specify as follows with a photographic means of using this control method.
Please be simultaneously with reference to Fig. 2, Fig. 3, and Fig. 4.Fig. 2 illustrates the calcspar according to an example of the photographic means of one embodiment of the invention.Fig. 3 illustrate Fig. 2 photographic means two continuous the preview windows one the example synoptic diagram.Fig. 4 illustrate into the focusing between the photographic means of relevant Fig. 2 and the object from the synoptic diagram of the depth of field.As shown in Figure 2, this photographic means 200 comprises a shooting unit 210, a pattern start unit 220, a preview window 230, shutter speed decision unit 240, aperture decision unit 250, a focusing unit 260, an and exposure judging unit 270.Take unit 210 and comprise a photo-sensitive cell 212 and a flashlamp 214.Start relation between each unit as follows.
Pattern start unit 220 usefulness are so that take the auto photographing pattern that unit 210 entering one are preset.Take unit 210 and for example have multiple Photographing Mode, like manual Photographing Mode, traditional auto photographing pattern or various scene mode.Pattern start unit 220 for example is a rotating disk, is used to switch in above-mentioned these a little patterns.Perhaps, pattern start unit 220 also can be a button.Present embodiment provides a kind of foundation preset auto photographing pattern of the present invention, and can let the user make this preset auto photographing pattern of unit 210 entering of taking through pattern start unit 220.In practical operation; This preset auto photographing pattern can be described as dynamic object and follows the trail of screening-mode; In order to the object that gets in the coverage of taking unit 210 is followed the trail of; Thereby determine the various acquisition parameters that are fit to take this object, like shutter speed S, focal length F, aperture f etc.
So-called object tracing for example can be realized by an object tracing algorithm.The object tracing algorithm for example is to be applied on the video signal film.Generally speaking, regular meeting need for example be that every shadow lattice (frame) are carried out color space transformation, and the form of conversion be YUV or the form of YcbCr mostly through the processing of overcompression before the video signal film stored.Color space transformation can be separated brightness with chroma, and the object tracing algorithm can use the brightness data of shadow lattice to carry out.In a practical operation of object tracing; Can the additive operation that two the continuous shadow lattice in front and back carry out brightness be obtained shadow lattice difference; And the zone of shadow lattice difference greater than a certain threshold value marked; Contours of objects during the sign zone is commonly used to represent to move is shown in the object outline OL of Fig. 3.So, just can reach the tracking of object, and make present embodiment determine the various acquisition parameters that are fit to take this object according to this.Certainly, only in order to the usefulness of explanation present embodiment, and present embodiment also is not limited thereto in the explanation of the object tracing of confession mentioned herein.
The preview window 230 is coupled to takes unit 210 for the photograph preview.In an embodiment, the preview window 230 for example is an EVF, is coupled to photo-sensitive cell 212, and lyo-luminescence element or organic illuminating element in order to receive 212 sensed data of photo-sensitive cell through it provide a preview screen.In another embodiment, the preview window 230 also can be an optics picture window, and it is to utilize the anaclasis of advancing in main lens of prism or other optical principle to form phase.
The translational speed of shutter speed decision unit 240 foundation one objects in the preview window 230 determines a shutter speed S.In an embodiment, as shown in Figure 3, the preview window 230 is an EVF, in order to a preview screen Prev to be provided.At this moment, shutter speed decision unit 240 can decide shutter speed S according to the pixel displacement amount dis of object Obj in the preview screen Prev that EVF provided.In other words, as the pixel displacement amount dis of object Obj in preview screen Prev the more the time, then the translational speed of indicated object Obj is bigger, and shutter speed decision unit 240 can improve shutter speed S.Among the Yu Shizuo, the decision of relevant shutter speed S, the translational speed of definable object Obj is the pixel displacement amount of object Obj per second in preview screen Prev.The pixels across of supposing preview screen Prev is 800 pixels, then can set up the table of comparisons like table one and express the translational speed of object Obj and the relation of shutter speed.
Table one
(shutter speed representes that more less speed is fast more)
So, when object Obj moved a period of time in the preview window 230 after, the speed of object Obj just can be judged in shutter speed decision unit 240, and determines shutter speed S accordingly.Constantly move down to dynamic object, present embodiment just can produce suitable shutter speed through the translational speed of judging object, thereby avoids the one-tenth of object fuzzy mutually.
Focusing unit 260 is in order to obtain the focal length F of object Obj, and is as shown in Figure 4.Focusing unit 260 focusing object Obj can be Autofocus Technology or manual focus technology with the practice that obtains focal length F, or utilize the present or following technological implementor of institute for having common knowledge the knowledgeable.In this present embodiment, focusing unit 260 can be used to carry out multi-spot in the profile OL to object Obj.
Aperture decision unit 250 determines an aperture f according to object Obj in a depth of field de who takes on the direction dir, and is as shown in Figure 4.In an embodiment, depth of field de is for can be a preset value.Because the depth of object Obj is not too large usually,,, and be converted into suitable aperture f as 50 centimeters so aperture decision unit 250 can use preset value to be used as depth of field de.Perhaps, as shown in Figure 3, carry out multi-spot in the profile OL of the aperture decision unit 250 may command focusing 260 couples of object Obj in unit, obtaining the difference of a maximum focal length and a minimum focus, and obtain an estimated value according to this difference and be used as depth of field de.So, aperture decision unit 250 just can use this estimated value to decide aperture f.Compared to conventional needle dynamic object Obj is used the practice of high shutter and little aperture, present embodiment can use the aperture f that can produce the tool Deep Canvas to take dynamic object Obj.
Exposure judging unit 270 is in order to judge whether pairing exposure is enough under the combination of shutter speed S and aperture f.In an embodiment, exposure judging unit 270 may command are taken unit 210 and are carried out photometry with shutter speed S and aperture f, use and judge whether exposure is enough.When exposure judging unit 270 judges that exposure is not enough, then take unit 210 and can adjust the light sensitivity of photo-sensitive cell 212 or open flashlamp 214.So, just, can provide enough exposures to take.When 270 judgements of exposure judging unit have exposure enough, take unit 210 and can take with shutter speed S and the aperture f that is determined in response to a shooting instruction Cmd.The combination of different shutter speed S and aperture f can correspond to different exposures.In traditional consumption-orientation camera,, can use the shutter speed S and the aperture f of dependence relation in order to obtain enough exposures.In other words, when having only one to be determined among shutter speed S and the aperture f, and another person's selection meeting limits to some extent.Be different from this traditional practice, the photographic means 200 of present embodiment can determine shutter speed S and aperture f respectively, and is not subject to the shutter and the aperture dependence relation of traditional consumption type camera.
Please with reference to Fig. 5, it illustrates the detail flowchart according to the control method of the photographic means of one embodiment of the invention.In step S510, the auto photographing pattern that photographic means entering one is preset.In step S520, carry out an object tracing algorithm by photographic means and obtain the translational speed of an object in the preview window of photographic means, and determine a shutter speed according to this.In step S530, by photographic means focused in a plurality of positions around the object, to obtain a maximum focal length and the minimum focus in these a little positions.In step S540, whether the difference of judging maximum focal length and minimum focus is greater than a preset value.If, then get into step S552, decide aperture by photographic means according to the difference of maximum focal length and minimum focus.If not, then get into step S554, decide aperture according to preset value by photographic means.Then, in step S560, carry out photometry to judge whether exposure is enough with shutter speed and aperture by photographic means.If not, then get into step S570, by photographic means adjustment light sensitivity or unlatching flashlamp.If, then get into step S580, judge whether to receive one by photographic means and take instruction.If, then get into step S590, by photographic means in response to taking with shutter speed and aperture.If not, then get back to step S520.
In photographic means and control method thereof that the embodiment of the invention proposed,, can in preset auto photographing pattern, determine various acquisition parameters respectively, like shutter speed and aperture in order to shoot photo with Deep Canvas.So, for the user, the use of photographic means will become simple and make things convenient for, and can improve the quality of taking photograph with suitable shutter speed and aperture.
In sum, though the present invention discloses as above with preferred embodiment, so it is not in order to limit the present invention.Have common knowledge the knowledgeable in the technical field under the present invention, do not breaking away from the spirit and scope of the present invention, when doing various changes and retouching.Therefore, protection scope of the present invention is as the criterion when looking accompanying the claim person of defining.
Claims (10)
1. a control method is applicable to a photographic means, it is characterized in that, this control method comprises:
The auto photographing pattern that this photographic means entering one is preset;
According to the translational speed of an object in the preview window of this photographic means, determine a shutter speed by this photographic means;
According to the depth of field of this object on the shooting direction of this photographic means, determine an aperture by this photographic means;
Judge by this photographic means whether pairing exposure is enough under the combination of this shutter speed and this aperture; And
, when exposure is enough, takes instruction in response to one and take by this photographic means with this shutter speed and this aperture.
2. control method according to claim 1 is characterized in that, also comprises:
When the pairing exposure of this photographic means is not enough, by the light sensitivity of a photo-sensitive cell of this this photographic means of photographic means adjustment or open a flashlamp of this photographic means.
3. control method according to claim 1; It is characterized in that; In the step of this shutter speed that determines this photographic means, this preview window is an EVF, and this shutter speed decides according to the pixel displacement amount of this object in the preview screen that this EVF provided.
4. control method according to claim 1 is characterized in that, this depth of field is a preset value.
5. control method according to claim 1 is characterized in that, is comprised by the step of this photographic means according to this aperture of this this photographic means of depth of field decision of this object on the shooting direction of this photographic means:
Carry out multi-spot in the profile to this object, to obtain the difference of a maximum focal length and a minimum focus;
Obtain an estimated value as this depth of field according to this difference.
6. a photographic means is characterized in that, comprising:
One shooting unit;
One pattern start unit is used so that should take the auto photographing pattern that unit entering one is preset;
One the preview window is coupled to this shooting unit for the photograph preview;
One shutter speed decision unit is in order to determine a shutter speed according to the translational speed of an object in this preview window;
One aperture decision unit is in order to determine an aperture according to this object in a depth of field of taking on the direction; And
One exposure judging unit is in order to judge whether pairing exposure is enough under the combination of this shutter speed and this aperture;
Wherein, this shooting unit is used to this exposure judging unit to be judged when exposure is enough, takes instruction in response to one and takes with this shutter speed and this aperture.
7. photographic means according to claim 6; It is characterized in that; This shooting unit comprises a photo-sensitive cell or a flashlamp, and when this exposure judging unit judged that exposure is not enough, then this shooting unit was adjusted the light sensitivity of this photo-sensitive cell or opened this flashlamp.
8. photographic means according to claim 6 is characterized in that, this preview window is an EVF, and this shutter speed decision unit decides according to the pixel displacement amount of this object in the preview screen that this EVF provided.
9. photographic means according to claim 6 is characterized in that, this depth of field is a preset value.
10. photographic means according to claim 6 is characterized in that, also comprises:
One focusing unit is in order to focus;
Wherein, this aperture decision unit carries out multi-spot getting a maximum focal length and the difference of a minimum focus in the said focal length in order to control in the profile of this focusing unit to this object, and obtains an estimated value according to this difference and be used as this depth of field.
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| CN201010570546.2A CN102478743A (en) | 2010-11-26 | 2010-11-26 | Photographic device and control method thereof |
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| CN201010570546.2A CN102478743A (en) | 2010-11-26 | 2010-11-26 | Photographic device and control method thereof |
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| CN104065878A (en) * | 2014-06-03 | 2014-09-24 | 小米科技有限责任公司 | Method, device and terminal for controlling shooting |
| CN104243800A (en) * | 2013-06-14 | 2014-12-24 | 索尼公司 | Control device and storage medium |
| CN104506770A (en) * | 2014-12-11 | 2015-04-08 | 小米科技有限责任公司 | Method and device for photographing image |
| CN104853109A (en) * | 2015-04-30 | 2015-08-19 | 广东欧珀移动通信有限公司 | Flashing automatically adjusting method and shooting terminal |
| WO2015180268A1 (en) * | 2014-05-30 | 2015-12-03 | 杭州海康威视数字技术股份有限公司 | Intelligent adjustment method when video camera performs automatic exposure and apparatus therefor |
| CN105306830A (en) * | 2015-12-08 | 2016-02-03 | 广东欧珀移动通信有限公司 | Shooting control method and device |
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| CN105991932A (en) * | 2015-02-09 | 2016-10-05 | 联想(北京)有限公司 | Data processing method and electronic equipment |
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| WO2020082379A1 (en) * | 2018-10-26 | 2020-04-30 | 深圳柔显系统技术有限公司 | Target acquisition device and target acquisition control method |
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| CN104243800A (en) * | 2013-06-14 | 2014-12-24 | 索尼公司 | Control device and storage medium |
| CN105450936B (en) * | 2014-05-30 | 2019-02-15 | 杭州海康威视数字技术股份有限公司 | Intelligent adjusting method and its device when video camera automatic exposure |
| US10042233B2 (en) | 2014-05-30 | 2018-08-07 | Hangzhou Hikvision Digital Technology Co., Ltd. | Intelligent adjustment method when video camera performs automatic exposure and apparatus therefor |
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| CN104065878A (en) * | 2014-06-03 | 2014-09-24 | 小米科技有限责任公司 | Method, device and terminal for controlling shooting |
| CN104065878B (en) * | 2014-06-03 | 2016-02-24 | 小米科技有限责任公司 | Filming control method, device and terminal |
| US9584725B2 (en) | 2014-06-03 | 2017-02-28 | Xiaomi Inc. | Method and terminal device for shooting control |
| CN105472231A (en) * | 2014-09-03 | 2016-04-06 | 联想(北京)有限公司 | Control method, image acquisition device and electronic equipment |
| CN105472231B (en) * | 2014-09-03 | 2019-03-29 | 联想(北京)有限公司 | Control method, image collecting device and electronic equipment |
| CN104506770A (en) * | 2014-12-11 | 2015-04-08 | 小米科技有限责任公司 | Method and device for photographing image |
| CN105991932A (en) * | 2015-02-09 | 2016-10-05 | 联想(北京)有限公司 | Data processing method and electronic equipment |
| CN104853109A (en) * | 2015-04-30 | 2015-08-19 | 广东欧珀移动通信有限公司 | Flashing automatically adjusting method and shooting terminal |
| CN105306830A (en) * | 2015-12-08 | 2016-02-03 | 广东欧珀移动通信有限公司 | Shooting control method and device |
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| WO2020082379A1 (en) * | 2018-10-26 | 2020-04-30 | 深圳柔显系统技术有限公司 | Target acquisition device and target acquisition control method |
| CN112189334A (en) * | 2019-09-18 | 2021-01-05 | 深圳市大疆创新科技有限公司 | Shutter speed adjusting method, safety shutter calibrating method, portable equipment and unmanned aerial vehicle |
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Application publication date: 20120530 |