CN104811603B - Auxiliary focusing mechanism and method - Google Patents
Auxiliary focusing mechanism and method Download PDFInfo
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- CN104811603B CN104811603B CN201410037022.5A CN201410037022A CN104811603B CN 104811603 B CN104811603 B CN 104811603B CN 201410037022 A CN201410037022 A CN 201410037022A CN 104811603 B CN104811603 B CN 104811603B
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- time imaging
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Abstract
The present invention provides a kind of auxiliary focusing mechanism and method, and methods described comprises the following steps, captures the first real-time imaging in the first distance of relative thing to be taken the photograph first.Then, the sharp keen angle value of the first real-time imaging is calculated.Then, the second real-time imaging is captured in the second distance of relative thing to be taken the photograph.Then, the sharp keen angle value of the second real-time imaging is calculated.Then, compare the sharp keen angle value of the first real-time imaging and the sharp keen angle value of the second real-time imaging and transmit notification signal, notification signal represents the relativeness of the first distance, second distance and focal length.The method may indicate that the relation of the focal length of user's object location to be taken the photograph and camera, and appropriate moving direction is judged with assisting user.
Description
Technical field
It is particularly a kind of to be directed to the auxiliary focusing with single focal length the present invention relates to a kind of auxiliary focusing mechanism and method
Device and method.
Background technology
Camera species at present on the market is various, can be divided into for focus function with automatic focusing function with not having
There is the camera of automatic focusing function, when in use, user only needs flicking shutter to the camera with automatic focusing function
Start auto-focusing, press shutter again after camera is focused automatically, you can take clear photograph.But using no pair
During the camera of burnt function, user must choose to treat and take the photograph appropriate focal length for thing, treat eye by the focusing ring on rotating lens
Eyeball confirms in picture window to take pictures wait pressing shutter after the image definition for taking the photograph thing again.
If but camera lens and can not choose different focal lengths, i.e. camera lens only have single focal length situation when, user just needs
The focal length of this camera lens is found by way of shift position, treat the thing image to be taken the photograph of picture window because position is moved and from mould
Stop movement after paste change is clear and press shutter to take pictures.If however, the equipment without auxiliary focusing, user's caused by inconvenient judgment
Appropriate moving direction or distance.
The content of the invention
It is an object of the invention to provide a kind of auxiliary focusing mechanism and method, it is set to aid in user to focus.
To achieve the above object, the present invention proposes a kind of multimedia management device, multi-media management method and performs many matchmakers
The embodied on computer readable media of body management method, by show that broadcasting is noted down on media interface is played, to help user can be with
Learn that the image frame of which multi-medium file is checked by other user.
To achieve the above object, the present invention provides a kind of auxiliary focusing mechanism, and there is the auxiliary focusing mechanism image to pick
Modulus block and image processing module.The image acquisition module is used to capture the first real-time shadow in the first distance of relative thing to be taken the photograph
Picture and second distance the second real-time imaging of acquisition in relative thing to be taken the photograph.Described image processing module couples image acquisition module,
Image processing module compares first real to calculate the sharp keen angle value of the first real-time imaging and the sharp keen angle value of the second real-time imaging
When the sharp keen angle value of image and the sharp keen angle value of the second real-time imaging and transmit notification signal, notification signal represent the first distance,
The relativeness of second distance and focal length.
Wherein, when the image processing module judges that the sharp keen angle value of the first real-time imaging is more than the sharp of second real-time imaging
During sharp angle value, the sharp keen angle value of first real-time imaging is a threshold value of the sharp keen angle value for comparing one the 3rd real-time imaging, should
3rd real-time imaging is subtracted in one the 3rd distance of the relative thing to be taken the photograph.
Wherein, when the image processing module judges that the sharp keen angle value of the first real-time imaging is less than the sharp of second real-time imaging
During sharp angle value, the sharp keen angle value of second real-time imaging is a threshold value of the sharp keen angle value for comparing one the 3rd real-time imaging, should
3rd real-time imaging is subtracted in one the 3rd distance of the relative thing to be taken the photograph.
Wherein, when the image processing module judges that the sharp keen angle value of the 3rd real-time imaging is less than the threshold value, the door
Threshold value is in the maximum sharpness value of a moving area.
Wherein, when the image processing module judges that the sharp keen angle value of the 3rd real-time imaging is equal to the maximum of the moving area
During sharp keen angle value, the notification signal represents that the 3rd distance is the focal length.
Wherein, the notification signal is shown on a display interface.
To achieve the above object, the present invention provides a kind of auxilary focusing method, is captured in the first distance of relative thing to be taken the photograph
First real-time imaging.Calculate the sharp keen angle value of the first real-time imaging.The second real-time shadow is captured in the second distance of relative thing to be taken the photograph
Picture.The sharp keen angle value for calculating the second real-time imaging and the sharp keen angle value for comparing the first real-time imaging and the second real-time imaging it is sharp
Sharp angle value simultaneously transmits notification signal, and notification signal represents the relativeness of the first distance, second distance and focal length.
Wherein, when the sharp keen angle value of first real-time imaging is more than the sharp keen angle value of second real-time imaging, this first
The sharp keen angle value of real-time imaging is a threshold value of the sharp keen angle value for comparing one the 3rd real-time imaging, and the 3rd real-time imaging is picked
It is taken at one the 3rd distance of the relative thing to be taken the photograph.
Wherein, when the sharp keen angle value of first real-time imaging is less than the sharp keen angle value of second real-time imaging, this second
The sharp keen angle value of real-time imaging is a threshold value of the sharp keen angle value for comparing one the 3rd real-time imaging, and the 3rd real-time imaging is picked
It is taken at one the 3rd distance of the relative thing to be taken the photograph.
Wherein, when the sharp keen angle value of the 3rd real-time imaging is less than the threshold value, the threshold value is in a moving area
Maximum sharpness value.
Wherein, when the sharp keen angle value of the 3rd real-time imaging is equal to the maximum sharpness value of the moving area, the notice
Signal represents that the 3rd distance is the focal length.
Wherein, the notification signal is shown on a display interface.
In summary, the present invention can capture the sharpness of real-time imaging by comparing in the different distance relative to thing to be taken the photograph
Value, judges this time to be proximate to relative to the distance of thing to be taken the photograph compared to last time or remote relative to the distance of thing to be taken the photograph according to this
The focal length of thing to be taken the photograph is shot, and according between this focal length relative to the distance of thing to be taken the photograph and with shooting thing to be taken the photograph
Relativeness transmit different types of notification signal, so as to aid in user to focus.
Below in conjunction with the drawings and specific embodiments, the present invention will be described in detail, but not as a limitation of the invention.
Brief description of the drawings
Fig. 1 is the functional block diagram of the auxiliary focusing mechanism according to one embodiment of the invention.
Fig. 2 is the flow chart of the auxilary focusing method according to one embodiment of the invention.
Fig. 3 A are the signal of the first distance according to one embodiment of the invention, second distance and focal length relativeness
Figure.
Fig. 3 B are the signal of the first distance according to another embodiment of the present invention, second distance and focal length relativeness
Figure.
Fig. 4 is the schematic diagram of the auxilary focusing method according to one embodiment of the invention.
Wherein, reference：
1 auxiliary focusing mechanism
10 image acquisition modules
12 image processing modules
14 storage modules
16 power supply modules
The distances of D1 first
D2 second distances
The distances of D3 the 3rd
D4 focal lengths
Embodiment
Describe the detailed features and advantage of the present invention in detail in embodiments below, its content is enough to make any ability
The technology contents that field technique personnel understand the present invention are simultaneously implemented according to this, and content according to disclosed by this specification, apply for a patent
Scope and schema, it is any skilled person readily understands that related purpose and advantage of the invention.Following embodiment
The viewpoint of the present invention is further described, but it is non-anyways to limit scope of the invention.
Please with reference to Fig. 1, Fig. 3 A, Fig. 3 B and Fig. 4.Wherein Fig. 1 is the auxiliary focusing dress according to one embodiment of the invention
It is the first distance, second distance and the focal length relativeness according to one embodiment of the invention to put functional block diagram, Fig. 3 A
Schematic diagram, Fig. 3 B are the signal of the first distance according to another embodiment of the present invention, second distance and focal length relativeness
Figure and the schematic diagram that Fig. 4 is the auxilary focusing method according to one embodiment of the invention.As shown in figure 1, auxiliary focusing mechanism 1 is included
Image acquisition module 10, image processing module 12 and storage module 14.Wherein image processing module 12 couples image acquisition module
10 and storage module 14.
Image acquisition module 10 is used to capture the first real-time imaging apart from D1 in the first of relative thing to be taken the photograph and treated in relative
The second distance D2 for taking the photograph thing captures the second real-time imaging.In other words, image acquisition module 10 can be captured on diverse location
The real-time imaging of thing to be taken the photograph.In in practice, image acquisition module 10, which can be one, has the camera lens of single focal length, photography
Machine camera lens, network take the photograph device camera lens or other appropriate photographic equipments.In addition, image acquisition module 10 is further included
One kind is by charge coupled cell (charge coupled device, CCD) or CMOS
Image sensor (image made by (complementary metal oxide semiconductor, CMOS)
Sensor), but the present invention not with it is above-mentioned be stated as limit.
Image processing module 12 to calculate respectively the first real-time imaging sharp keen angle value and the second real-time imaging it is sharp keen
After angle value, compare the sharp keen angle value of the first real-time imaging and the sharp keen angle value of the second real-time imaging and transmit notification signal.Should
Notification signal represent first apart from D1, second distance D2 and focal length D4 relativeness.In an example, at image
Reason module 12 is calculated after the sharp keen angle value of the real-time imaging received for the first time, and the sharp keen angle value that will be calculated temporarily is stored up
Deposit to storage module 14.Then, image processing module 12 calculates the sharp keen angle value of the real-time imaging received for the second time again, and
Next the sharp keen angle value calculated also is temporarily stored in storage module 14.
Then, when image processing module 12 takes out from storage module 14 and compares this two sharp keen angle value sizes, wherein in fact
When image sharp keen angle value the greater as next real-time imaging (such as apart threeth real-time shadow of the thing the 3rd to be taken the photograph apart from D3
Picture) sharp keen angle value threshold value.Comparative result represents auxiliary focusing mechanism 1 relative to the distance of thing to be taken the photograph and shoots thing to be taken the photograph
Focal length D4 between gap.In more detail, i.e., the position where auxiliary focusing mechanism 1 with using when thing is taken the photograph as focus
The gap between position where auxiliary focusing mechanism 1, and the notification signal corresponding according to comparative result transmission.Such as Fig. 3 A and
Shown in Fig. 3 B, when first apart from D1 be more than second distance D2 when can transmit the first signal, to notify user just away from focus away from
From D4, secondary signal can be transmitted when first is less than second distance D2 apart from D1, to notify user just close to focal length D4.
In addition, first can be also respectively transmitted when the 3rd is less than threshold value apart from D3 and when the 3rd is more than threshold value apart from D3
Signal and secondary signal, and when the 3rd is equal with focal length D4 apart from D3, then the 3rd signal can be transmitted, to notify user
To reach focal length D4.Because the sharp keen angle value of real-time imaging is calculated known to those skilled in the art of the present technique, therefore not
Repeat again.
Moreover, notification signal can be display be sent on display interface, by way of light source, sound source also or pass
Calculator device is delivered to, calculator device can transmit corresponding signal to image application by receiving variety classes notification signal
In program, the corresponding pass of the gap to notify focal length D4 of the user relative to the distance of thing to be taken the photograph with shooting thing to be taken the photograph
System.In in practice, calculator device can be computer, notebook computer, intelligent mobile phone or tablet PC, and image
Processing module 12 can be microprocessor (micro processor) or image processor (graphics processing
Unit), storage module 14 can for a kind of programmble read only memory PROM (programmable read-only memory,
PROM), erasable programmble read only memory PROM (erasable programmable read-only memory, EPROM), can
Electricity wiping programmble read only memory PROM (electrically erasable programmable read-only memory,
EEPROM), the non-voltile memory such as flash memory (flash memory) (non-volatile memory), but the present invention is not with this
It is limited.
In in practice, auxiliary focusing mechanism 1 further includes a power supply module 16, and this power supply module 16 is to carry
Power supply can be to image acquisition module 10, image processing module 12 and storage module 14.Power supply module 16 can be battery mould
Block such as solar cell or fuel cell, can also be alternating current circuit modules, including alternating-current power supply, one group to change electricity
Flow waveform AC/DC converter (AC/DC converter) and one group cut to adjust the direct current of charging current
Ripple device, but the present invention is not limited thereto.
Method in one embodiment of the invention, please with reference to Fig. 1, Fig. 2 and Fig. 4.Fig. 2 is according to one embodiment of the invention
Method flow diagram.As shown in step S200, image acquisition module 10 captures the in one section first of relative thing to be taken the photograph apart from D1
One real-time imaging.As shown in step S202, image processing module 12 calculates the sharp keen angle value of this first real-time imaging and stored extremely
Storage module 14.As shown in step S204, it is real-time that image acquisition module 10 captures second in the second distance D2 of relative thing to be taken the photograph
Image.As shown in step S206, image processing module 12 calculate the second real-time imaging sharp keen angle value, and by this result store to
Storage module 14.
Here, when auxiliary focusing mechanism 1 from a position (such as apart thing first to be taken the photograph apart from D1) is moved to another location
When on (such as apart wait take the photograph thing second distance D2), image acquisition module 10 captures the real-time of thing to be taken the photograph with this different position
Image, and this real-time imaging is sent to image processing module 12, then image processing module 12 calculates diverse location respectively
The sharp keen angle value of real-time imaging.
It is noted that above-mentioned steps S200 to S206 order can be exchanged mutually, i.e., image acquisition module 10 can
First is first captured after D1 and second distance D2 real-time imaging, footpath row calculates the first real-time imaging to image processing module 12 again
And second real-time imaging sharp keen angle value.
As shown in step S208, image processing module 12 compares the sharp keen angle value and the second real-time imaging of the first real-time imaging
Sharp keen angle value, and according to first apart from D1, second distance D2 and focal length D4 relativeness transmit notification signal.As walked
Shown in rapid S210, when the sharp keen angle value of the first real-time imaging is more than the sharp keen angle value of the second real-time imaging, i.e., first apart from D1
In the case of being less than second distance D2 and focal length D4 difference with focal length D4 difference, notification signal is transmitted.It is more detailed
Carefully say, when the direction for being moved to second distance D2 is toward the opposite direction in focal length direction, thing to be taken the photograph is captured on this position
The sharp keen angle value for the real-time imaging that the sharp keen angle value of real-time imaging can be captured once earlier above to be low, i.e. second distance D2 and focus away from
Gap increase from D4.Now image processing module 12 transmits the first signal, to notify user just to be clapped away from auxiliary focusing mechanism 1
The focal length D4 of thing to be taken the photograph is taken the photograph, and the sharp keen angle value of previous real-time imaging is set as a threshold value, to next
The sharp keen angle value of individual real-time imaging is compared.
As shown in step S212, when the sharp keen angle value of the first real-time imaging is less than the sharp keen angle value of the second real-time imaging,
I.e. first apart from the case that D1 and focal length D4 difference are more than second distance D2 and focal length D4 difference, and transmission is logical
Know signal.In other words, when the direction for being moved to second distance D2 is toward the direction in focal length direction, capture and treat on this position
It is height to take the photograph the sharp keen angle value of the real-time imaging that the sharp keen angle value of the real-time imaging of thing can be captured once earlier above, i.e. second distance D2 with
Focal length D4 gap is reduced.The now transmission of image processing module 12 secondary signal, to notify user just close to auxiliary focusing
Device 1 shoots the focal length D4 of thing to be taken the photograph, and the sharp keen angle value of this real-time imaging is set as into a threshold value, with
The sharp keen angle value of one real-time imaging is compared.
As shown in step S214, image acquisition module 10 is real-time apart from D3 acquisitions the 3rd in one section the 3rd with respect to thing to be taken the photograph
Image.As shown in step S216, image processing module 12 calculates the sharp keen angle value of this 3rd real-time imaging and stored to storage mould
Block 14.As shown in step S218, compare whether the 3rd real-time imaging is more than threshold value, and when the sharp keen angle value of the 3rd real-time imaging
During more than threshold value, the sharp keen angle value of the 3rd real-time imaging is the sharpness for replacing this threshold value for relatively more next real-time imaging
The threshold value of value, and transmit secondary signal to notify user just to shoot close to auxiliary focusing mechanism 1 by image processing module 12
The focal length D4 of thing to be taken the photograph.
As shown in step S220, when the sharp keen angle value of the 3rd real-time imaging is not more than threshold value, that is, this sharpness is judged
Whether value is equal to threshold value.As shown in step S222, when the sharp keen angle value of the 3rd real-time imaging is less than threshold value, to table
Show second distance D2 and focal length D4 gap increase, threshold value is in the maximum sharpness value of moving area.In other words,
When more leaning on into focal length D4, the sharp keen angle value of its real-time imaging captured can gradually rise, until crossing focal length D4
Afterwards, its sharp keen angle value can be reduced gradually, therefore, if the sharp keen angle value of the real-time imaging of next acquisition is less than threshold value, i.e.,
It is the maximum sharpness value in this moving area to represent this threshold value.
As shown in step S224, when the sharp keen angle value of the 3rd real-time imaging is equal to the maximum sharpness value of moving area,
Notification signal represents that the 3rd is focal length D4 apart from D3.More say in detail, obtaining the maximum sharpness value of this moving area
Afterwards, when the sharp keen angle value of one of follow-up acquisition real-time imaging is equal with this maximum sharpness value, that is, represent this and capture in fact
When image position be the pinpointed focus in moving area apart from D4, now image processing module 12 transmits the 3rd signal and informs use
Family is moved into the pinpointed focus for shooting thing to be taken the photograph apart from D4.
The present invention illustrates overall flow in this with an example, when the corresponding image application of user's opening network video camera
After program, network camera first captures the real-time imaging of thing to be taken the photograph, and calculates the sharp keen angle value of this real-time imaging, thereafter user
Start mobile network's video camera.Now, network camera is the real-time imaging that another thing to be taken the photograph is captured by the change on position,
And the size of the sharp keen angle value and the sharp keen angle value of previous real-time imaging of the real-time imaging relatively this time moved.If toward away from this
The focal length side of network camera is moved up, then sends the first notification signal (the first signal) and notify user remote
Shoot the focal position of thing to be taken the photograph.If being moved up toward the focal length side close to this network camera, then send second
Notification signal (secondary signal) notifies user close to the focal position for shooting thing to be taken the photograph.And work as user toward the side of focal position
To when moving past this focal position, because the sharp keen angle value of real-time imaging can be reduced gradually, now find in moving range
Real-time imaging maximum sharpness value, also find the optimal focus position for shooting thing to be taken the photograph, when user be moved to this focus position
When putting, network camera is to send the third notification signal (the 3rd signal) to notify user to reach optimal shooting distance.
In summary, the present invention captures real-time shadow by image capturing device on the different distance relative to thing to be taken the photograph
As, image processing apparatus calculate capture the sharp keen angle value of real-time shadow and compare this sharp keen angle value size with judge this relative to
The distance of thing to be taken the photograph is close relative to the distance of thing to be taken the photograph compared with last time or away from the focal length for shooting thing to be taken the photograph, and according to this
The relativeness of focal length of the secondary place distance with shooting thing to be taken the photograph transmits different types of notification signal, so as to aid in user
Focusing.
Certainly, the present invention can also have other various embodiments, ripe in the case of without departing substantially from spirit of the invention and its essence
Various corresponding changes and deformation, but these corresponding changes and deformation can be made according to the present invention by knowing those skilled in the art
The protection domain of the claims in the present invention should all be belonged to.
Claims (8)
1. a kind of auxilary focusing method, it is characterised in that including：
One first real-time imaging is captured in one first distance of a relative thing to be taken the photograph；
Calculate the sharp keen angle value of first real-time imaging；
One second real-time imaging is captured in a second distance of the relative thing to be taken the photograph；
Calculate the sharp keen angle value of second real-time imaging；And
Compare the sharp keen angle value of first real-time imaging and the sharp keen angle value of second real-time imaging and transmit a notification signal, should
Notification signal represents the relativeness of first distance, the second distance and a focal length,
Wherein, when the sharp keen angle value of first real-time imaging is more than the sharp keen angle value of second real-time imaging, this is first real-time
The sharp keen angle value of image is a threshold value of the sharp keen angle value for comparing one the 3rd real-time imaging, the 3rd real-time imaging be subtracted in
With respect to one the 3rd distance of the thing to be taken the photograph,
When the sharp keen angle value of first real-time imaging is less than the sharp keen angle value of second real-time imaging, second real-time imaging
Sharp keen angle value is the threshold value for the sharp keen angle value for comparing the 3rd real-time imaging, and the 3rd real-time imaging is subtracted to be somebody's turn to do in relative
3rd distance of thing to be taken the photograph.
2. auxilary focusing method according to claim 1, it is characterised in that when the sharp keen angle value of the 3rd real-time imaging is small
When the threshold value, the threshold value is in the maximum sharpness value of a moving area.
3. auxilary focusing method according to claim 2, it is characterised in that when sharp keen angle value of the 3rd real-time imaging etc.
When the maximum sharpness value of the moving area, the notification signal represents that the 3rd distance is the focal length.
4. auxilary focusing method according to claim 1, it is characterised in that the notification signal is shown in a display interface
On.
5. a kind of auxiliary focusing mechanism, it is characterised in that include：
One image acquisition module, captures one first real-time imaging in one first distance of a relative thing to be taken the photograph and waits to take the photograph in relative this
One second distance of thing captures one second real-time imaging；And
One image processing module, couples the image acquisition module, and the image processing module calculates the sharp keen of first real-time imaging
The sharp keen angle value of angle value and second real-time imaging, compares the sharp keen angle value and second real-time imaging of first real-time imaging
Sharp keen angle value simultaneously transmits a notification signal, and the notification signal represents the first distance, the phase of the second distance and a focal length
To relation,
Wherein, when the image processing module judges that the sharp keen angle value of the first real-time imaging is more than the sharpness of second real-time imaging
During value, the sharp keen angle value of first real-time imaging is a threshold value of the sharp keen angle value for comparing one the 3rd real-time imaging, the 3rd
Real-time imaging is subtracted in one the 3rd distance of the relative thing to be taken the photograph,
When the image processing module judges that the sharp keen angle value of the first real-time imaging is less than the sharp keen angle value of second real-time imaging,
The sharp keen angle value of second real-time imaging is the threshold value for the sharp keen angle value for comparing the 3rd real-time imaging, the 3rd real-time shadow
As being subtracted in the 3rd distance of the relative thing to be taken the photograph.
6. auxiliary focusing mechanism according to claim 5, it is characterised in that when the image processing module judges that the 3rd is real
When image sharp keen angle value be less than the threshold value when, the threshold value be in the maximum sharpness value of a moving area.
7. auxiliary focusing mechanism according to claim 6, it is characterised in that when the image processing module judges that the 3rd is real
When image sharp keen angle value be equal to the moving area maximum sharpness value when, the notification signal represent the 3rd distance be Jiao
Point distance.
8. auxiliary focusing mechanism according to claim 5, it is characterised in that the notification signal is shown in a display interface
On.
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| CN201410037022.5A CN104811603B (en) | 2014-01-24 | 2014-01-24 | Auxiliary focusing mechanism and method |
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| CN201410037022.5A CN104811603B (en) | 2014-01-24 | 2014-01-24 | Auxiliary focusing mechanism and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1865849A (en) * | 2005-05-20 | 2006-11-22 | 日产自动车株式会社 | Image display apparatus and method |
| CN100429546C (en) * | 2002-10-24 | 2008-10-29 | 夏普株式会社 | Focus state display |
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| KR101415872B1 (en) * | 2007-09-14 | 2014-07-11 | 삼성전기주식회사 | Method and apparatus for auto focusing of image capturing |
| CN101614858B (en) * | 2008-06-26 | 2011-08-31 | 深圳富泰宏精密工业有限公司 | Focusing system |
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| CN100429546C (en) * | 2002-10-24 | 2008-10-29 | 夏普株式会社 | Focus state display |
| CN1865849A (en) * | 2005-05-20 | 2006-11-22 | 日产自动车株式会社 | Image display apparatus and method |
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