CN104980644B - A kind of image pickup method and device - Google Patents
A kind of image pickup method and device Download PDFInfo
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- CN104980644B CN104980644B CN201410146913.4A CN201410146913A CN104980644B CN 104980644 B CN104980644 B CN 104980644B CN 201410146913 A CN201410146913 A CN 201410146913A CN 104980644 B CN104980644 B CN 104980644B
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Abstract
The present invention provides a kind of image pickup method, is applied to terminal, including starting camera carries out Image Acquisition, and shows the preview image of the acquisition；The camera includes at least two optical mirror slips not being located at simultaneously in Image Acquisition optical path；Receive focal length switching command；The first eyeglass being located in described image acquisition optical path at least two optical mirror slip is removed into described image according to the focal length switching command and acquires optical path, and the second eyeglass not being located in described image acquisition optical path at least two optical mirror slip is moved into described image acquisition optical path；Transition processing is carried out to the preview image by digital zoom during focal length switching；Shooting instruction is exported after the completion of the focal length switching, shooting operation is carried out by second eyeglass.
Description
Technical field
The present invention relates to technical field of media more particularly to a kind of image pickup methods and device.
Background technique
With being widely used for mobile terminal, terminal user is more and more taken pictures using mobile terminals such as mobile phones to replace
Digital camera makes mobile terminal become the common capture apparatus in people's daily life.With mobile terminal to distal end scenery into
Row shooting when, due to distant place scenery in picture proportion very little, do not meet user shoot demand, user often using move
Dynamic terminal take pictures in zoom system, pancreatic system carry out zoom, amplify the scenery of distant place.
When existing mobile terminal is taken pictures, since eyeglass limits, long-range objectives can only often be gone to carry out with digital zoom
It calculates, amplifies distant place scenery.Digital zoom will be that a part of pixel on image sensor is done using " interpolation " processing means
Amplification, so that user visually be allowed only to see the part of scenery, reaches the visual effect of zoom.But since real focal length does not have
It changes, so resolution ratio and picture quality are relative to poor under normal circumstances.A small amount of digital zoom is to picture quality
Influence is not obvious, but the digital zoom of 2 times or more can be affected to quality and picture quality is made to be deteriorated rapidly.
As shown in Figure 1, the eyeglass with optical zoom function is directly installed on mobile phone terminal in the prior art, utilize
The scenery of the optical zoom function amplification distant place of eyeglass, due in the eyeglass of optical zoom, the position of eyeglass and photosensitive element
It needs to change, so eyeglass is needing certain space along shooting direction, thus causes the volume ratio of optical zoom eyeglass general
Camera eyeglass volume on mobile terminal is much bigger.Which increase the thickness of mobile phone and weight, and it is mobile to reduce mobile phone etc.
The portability of terminal.
Summary of the invention
The embodiment of the present invention provides a kind of image pickup method and device, to improve while guaranteeing the terminals portability such as mobile phone
The resolution ratio and picture quality of terminal shooting image.
In a first aspect, the present invention provides a kind of image pickup method, it is applied to terminal, comprising: starting camera carries out image and adopts
Collection, and show the preview image of the acquisition；The camera include at least two not simultaneously be located at Image Acquisition optical path in
Optical mirror slip；
Receive focal length switching command；
It will be located at least two optical mirror slip in described image acquisition optical path according to the focal length switching command
First eyeglass removes described image and acquires optical path, and acquires optical path for described image is not located at least two optical mirror slip
In the second eyeglass move into described image acquisition optical path in；
Transition processing is carried out to the preview image by digital zoom during focal length switching；
Shooting instruction is exported after the completion of the focal length switching, shooting operation is carried out by second eyeglass.
With reference to first aspect, in the first possible implementation of the first aspect, pass through the digital zoom and institute
Deformation process is stated to specifically include preview image progress transition processing:
Based on the image of first eyeglass acquisition, described image is amplified by digital zoom, passes through shape
Become processing to deform described image；When differing first between the focal length and the focal length of second eyeglass of the digital zoom
Preset threshold, and when differing the second preset threshold between strain image image corresponding with second eyeglass, described image is adopted
Eyeglass in collection optical path switches to second eyeglass by first eyeglass, to complete the transition processing.
With reference to first aspect or the first possible implementation of first aspect, second in first aspect are possible
Implementation in, the starting camera carry out Image Acquisition after, receive focal length switching command before, the method is also
It include: to receive a shooting instruction to be shot by first eyeglass, and in the preset time after the completion of shooting
Receive the focal length switching command.
The possible implementation of second with reference to first aspect, in the third possible implementation of first aspect
In, the method also includes obtaining by the image obtained by first eyeglass shooting and by second eyeglass shooting
Image carry out image co-registration.
The third possible implementation with reference to first aspect, in the 4th kind of possible implementation of first aspect
In, it is described to carry out figure by the image obtained by first eyeglass shooting and by the image that second eyeglass shooting obtains
As fusion, specifically include:
By the image obtained by first eyeglass shooting and the image obtained by second eyeglass shooting
It is demarcated based on the same coordinate system, obtains uncalibrated image；
By the uncalibrated image calculating image obtained by first eyeglass shooting and by described second
The digital conversion model for the image that eyeglass shooting obtains；
By the image obtained by first eyeglass shooting and pass through described the according to the digital variation model
The image that the shooting of two eyeglasses obtains is merged.
Second aspect, the present invention provide a kind of camera terminal, are applied to terminal, comprising: lenz disc；The lenz disc includes
At least two are respectively provided with the optical mirror slip of different focal length, and at least two optical mirror slips are by focal length size along phase same level
Face is successively arranged on the lenz disc；
Drive module；The drive module is connect with the lenz disc, for driving the lenz disc, will be arranged in institute
It states the first eyeglass being located in described image acquisition optical path at least two optical mirror slip on lenz disc and removes the figure
As acquisition optical path, and the second eyeglass at least two optical mirror slip is moved into described image and acquires optical path；
Imaging sensor, setting is in described image acquisition optical path for that will be incident to this by described image acquisition optical path
Light on imaging sensor is converted to image data；
Display screen is generated for obtaining image data acquired in described image sensor, and according to described image data
Preview image；
Digital zoom module, for passing through number when the drive module drives the lenz disc to carry out eyeglass switching
Zoom carries out transition processing to the preview image；
Shooting module carries out shooting behaviour by second eyeglass for exporting shooting instruction after the completion of the switching
Make.
In conjunction with second aspect, in the first possible implementation of the second aspect, the digital zoom module is specific
For:
Based on the image of first eyeglass acquisition, described image is amplified by digital zoom, passes through shape
Become processing and deformation is carried out to described image；When differing first between the focal length and the focal length of second eyeglass of the digital zoom
Preset threshold, and when differing the second preset threshold between strain image image corresponding with second eyeglass, described image is adopted
Eyeglass in collection optical path switches to second eyeglass by first eyeglass, to complete the transition processing.
In conjunction in the possible implementation of the first of second aspect or second aspect, second in second aspect can
In the implementation of energy, the lenz disc is turntable, and at least two optical mirror slips are arranged in the rotation of the turntable
Center is on the annulus in the center of circle, wherein the center of circle of at least two optical mirror slip falls in the rotation center with the turntable
For on the annulus in the center of circle, and being arranged successively from small to large with focal length.
In conjunction with second aspect to second aspect second of possible implementation in any one implementation,
In the third possible implementation of two aspects, the lenz disc is sliding plate, and at least two optical mirror slips are arranged in
On the sliding trace of the sliding plate, wherein the center of circle of at least two optical mirror slip is fallen in the sliding trace of the sliding plate
In mandrel, and being arranged successively from small to large with focal length.
In conjunction with second aspect to second aspect the third possible implementation in any one implementation,
In 4th kind of possible implementation of two aspects, the shooting module is also used to, and is carried out image in the starting camera and is adopted
After collection, before receiving focal length switching command, receives a shooting instruction and shot by first eyeglass, and described
The focal length switching command is received in preset time after the completion of shooting.
In conjunction with the 4th kind of possible implementation of second aspect, in the 5th kind of possible implementation of second aspect
In, described device further include: image co-registration module, for that will shoot the image obtained by first eyeglass and pass through described
The image that the shooting of second eyeglass obtains carries out image co-registration.
In conjunction with the 5th kind of possible implementation of second aspect, in the 6th kind of possible implementation of second aspect
In, described image Fusion Module includes:
Unit is demarcated, for clapping by the image obtained by first eyeglass shooting and by second eyeglass
The image for taking the photograph acquisition is based on the same coordinate system and is demarcated, and obtains uncalibrated image；
Computing unit, for by the uncalibrated image calculate the image obtained by first eyeglass shooting and
Pass through the digital conversion model for the image that second eyeglass shooting obtains；
Integrated unit, for shooting the image obtained by first eyeglass for described according to the digital variation model
It is merged with the image obtained by second eyeglass shooting.
The embodiment of the present invention is intended to provide a kind of photographic schemes, is asked with solving the zoom in mobile terminal shooting process
Topic, allows and carries out seamless zoom between the eyeglass of different focal length while guaranteeing mobile terminal convenience, makes acquisition
Preview image is stablized clear
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is the pictorial diagram of the prior art；
Fig. 2 is the schematic diagram of the prior art；
Fig. 3 is a kind of flow diagram of image pickup method provided in an embodiment of the present invention；
Fig. 4 is a kind of another flow diagram of image pickup method provided in an embodiment of the present invention；
Fig. 5 is a kind of another flow diagram of image pickup method provided in an embodiment of the present invention；
Fig. 6 is the scaling board exemplary diagram of scaling method provided in an embodiment of the present invention；
Fig. 7 is the shooting picture exemplary diagram of the camera lens one in scaling method provided in an embodiment of the present invention；
Fig. 8 is the shooting picture exemplary diagram of the camera lens two in scaling method provided in an embodiment of the present invention；
Fig. 9 is a kind of structure chart of filming apparatus provided in an embodiment of the present invention；
Figure 10 is a kind of another structure chart of filming apparatus provided in an embodiment of the present invention；
Figure 11 is a kind of entity exemplary diagram of filming apparatus provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Technology described herein can be used for various terminals, such as mobile phone, camera, personal digital assistant PDA
(Personal Digital Assistant), laptop and other similar terminal installations with camera.
Term " shooting " word being referred to herein can be understood as taking pictures and image on the basis of current techniques.
The term " zoom " being referred to herein is to change focal length, and term " fixed-focus eyeglass " is the fixed optical mirror slip of focal length.
In optical field, " zoom " is divided into " optical zoom " and " digital zoom " (also referred to as " Digital Zoom "), such as Fig. 2 institute
Show, optical zoom is to change to realize by the position of eyeglass, object and photosensitive element tripartite, when eyeglass and photosensitive member
When the distance of part changes, visual angle and focal length will change, so that the scenery of distant place can also be apparent, so
It will be seen that some slr cameras, its eyeglass more long then its internal eyeglass and photoreceptor mobile space is bigger, from
And make zoom magnification also bigger, so that it may take farther landscape.The characteristic of " optical zoom " is: in zooming procedure not
The resolution ratio that picture can be changed, the value for describing picture also remain unchanged.Digital zoom is by the processing in digital camera
Device increases each elemental area in picture, to reach amplification purpose, this gimmick with image processing software handle as schemed
The area of piece changes greatly, but program carries out in digital camera, original CCD(charge coupled cell) on image sensor one
Part pixel is done using " interpolation " processing means amplifies, and the pixel interpolation algorithm on CCD image sensor is amplified picture
To entire picture, actually there is no the focal lengths for changing eyeglass for Digital Zoom.Different from optical zoom, Digital Zoom is photosensitive
The upward variation of device vertical direction, and give Zoom effect, by Digital Zoom, the scenery of shooting is exaggerated, but it
Clarity have a degree of decline.
The embodiment of the present invention is intended to provide a kind of photographic schemes, is asked with solving the zoom in mobile terminal shooting process
Topic, allows and carries out seamless zoom between the eyeglass of different focal length while guaranteeing mobile terminal convenience, makes acquisition
Preview image is stablized clear.
As shown in figure 3, the embodiment of the invention provides a kind of more eyeglass image pickup methods 100, more eyeglass image pickup methods
Include the following steps:
S101, starting camera carries out Image Acquisition, and shows the preview image of the acquisition；The camera includes extremely
Few two are not located at the optical mirror slip in Image Acquisition optical path simultaneously.
S103 receives focal length switching command.
S105 will be located at described image according to the focal length switching command and acquire optical path at least two optical mirror slip
In the first eyeglass remove described image acquire optical path, and will at least two optical mirror slip not be located at described image acquisition
The second eyeglass in optical path moves into described image acquisition optical path.
S107 carries out transition processing to the preview image by digital zoom during focal length switching.
S109 exports shooting instruction after the completion of the focal length switching, carries out shooting operation by second eyeglass.
Specifically, the camera on starting terminal device carries out Image Acquisition, on the terminal device equipped with display screen,
The start-up operation can trigger the display screen simultaneously and show that current preview image collected, the preview image are that camera is being clapped
The realtime graphic showed by display screen absorbed during taking the photograph, the camera are respectively provided with different cokes including at least two
Away from fixed-focus optical mirror slip.
When user needs to carry out zoom on the basis of camera is presently in focal length, to the fixed-focus optics of different focal length
Eyeglass switches over.I.e. from the first eyeglass being located in described image acquisition optical path in above-mentioned at least two optical mirror slip to above-mentioned
The second eyeglass not being located in described image acquisition optical path at least two optical mirror slips switches over, and is adopted with changing described image
The shooting focal length of collection.For example, when need to become larger focal length when can be on the basis of current lens focal length to the coke than current lens
Switched over away from bigger focus lenses, when need to become smaller focal length when can be on the basis of current lens focal length to than current mirror
The smaller focus lenses of the focal length of piece switch over, shooting focal length when changing Image Acquisition with this.
As described above, eyeglass switches between different fixed-focus optical mirror slips, due at least when user carries out zoom
Two be respectively provided with the focal length of the fixed-focus optical mirror slip of different focal length from each other be difficult to accomplish it is seamless continuous, therefore in order to
Guarantee the preview graph presented when described at least two are respectively provided with the fixed-focus optical mirror slip of different focal length in during switching
The continuity of picture needs to handle current lens acquired image by digital zoom before switching eyeglass.It is optional
, here can also by digital zoom image taken to current lens handle while the image is deformed
Processing, because fixed-focus optical mirror slip institute's acquired image of different focal length is in addition to image size caused by the difference by focal length
Except difference, it is also possible to lead to the deformation for having subtle between acquired image because of the difference of eyeglass, in order not to make this
The variation and anamorphose of kind of image size when two eyeglasses switch over jump, presentation it is excessively lofty because needing
The variation of image is made to be in gentle transition state by digital zoom and deformation process before eyeglass switches jump, until
Be changed to and the eyeglass that will switch to corresponding to difference between image it is very subtle or identical when, light
The switching jump that essence just occurs for eyeglass is learned, so that entire the acquired image of handoff procedure is in the shape gradually gently changed
State is unlikely to that user is made to think that preview image jump is lofty.
The present embodiment is by taking the fixed-focus eyeglass using three different focal lengths as an example, it is assumed that the focal length of eyeglass 1 is fl1, eyeglass 2
Focal length is fl2, and the focal length of eyeglass 3 is fl3, and fl1 < fl2 < fl3；Then when user amplify zoom when, when focal length be in fl1 and
When between fl2, system based on the image that eyeglass 1 is shot, using digital zoom to the live preview image showed into
Row transition processing can also carry out deformation process gradually to the image that the eyeglass 1 is shot simultaneously as described above, work as digital zoom
When close or equal with image corresponding to the preview image of deformation process and eyeglass 2, the driving device of camera drives micro electric
Machine carries out eyeglass switching, and eyeglass 1 is switched to eyeglass 2, thus the seamless jump between having ensured eyeglass, the seamless jump actually mirror
The seamless interfacing of preview image during piece switches.
Optionally, in order to keep the continuity jumped, the coke of digital zoom can be passed through when switching point will be reached
Away from differing the first preset threshold, and the deformation map obtained by deformation process between the focal length of the eyeglass 2 to be cut shifted to
When as differing the second preset threshold between image corresponding with the eyeglass 2 to be cut that shifts to, it is believed that preview image at this time with
Image corresponding to eyeglass 2 is similar or identical, at this time i.e. starting switching, to maintain user's preview graph in entire zoom operation
The stability of picture, so that handoff procedure does not influence the stability and clarity of preview image, to promote user experience.Herein
First preset threshold and the second preset threshold are determined according to empirical value in the art, and can be adjusted according to user demand,
Herein with no restrictions.The purpose that threshold value is arranged is to allow that in the case where the difference of preset threshold occur carry out eyeglass in advance between
Switching jump, it is clear that this means that image after zoom and deformation process when the preset threshold value when herein is zero
It just switches over and jumps when identical between the eyeglass 2 corresponding image to be cut shifted to.On the basis of above-mentioned amplification zoom
On, when continuing to amplify zoom if necessary, system carries out digital zoom for based on the preview image of eyeglass 2 taken
Processing, or also carries out deformation process simultaneously, the figure corresponding to the preview image and eyeglass 3 that digital zoom and deformation process obtain
As it is close or equal when, camera image processor control driving device drive turntable carry out rotation realize eyeglass switching, by mirror
Piece 2 switches to eyeglass 3, thus the seamless jump between having ensured eyeglass.Similarly, when user carries out diminution zoom, phase is also taken
Same mode carries out zoom and eyeglass hand-off process.
When user has selected a suitable shooting focal length, then exports shooting instruction and pass through the corresponding optical frames of the focal length
Piece carries out shooting operation, so that final output shoots image.
On the basis of the above embodiments, further alternative, further include step S102 between step S101 and S103:
A shooting instruction is exported to be shot by first eyeglass.And institute is received in the preset time after the completion of shooting
State focal length switching command.I.e. when user is when shooting photo, focal length can be received after starting camera carries out Image Acquisition
Before switching command, shooting operation is carried out according to current lens 1, and receive in the preset time after the shooting operation
Focal length switching command, to carry out photographing operation to Same Scene by the eyeglass 2 after switching focal length again.In this embodiment
On the basis of, which can also include step S110: by the image obtained by first eyeglass shooting and pass through institute
State the second eyeglass shooting obtain image carry out image co-registration, i.e., eyeglass 2 complete shooting operation after, to pass through 1 He of eyeglass
Eyeglass 2 shoots resulting two imagings and carries out image co-registration, to promote the clarity in picture part region.
We are it will again be assumed that at least two fixed-focus optical mirror slips with different focal length are 3 fixed-focus light with different focal length
Learn eyeglass, it is assumed that in this 3 eyeglasses: the focal length of eyeglass 1 is fl1, and the focal length of eyeglass 2 is fl2, and the focal length of eyeglass 3 is fl3, and
fl1<fl2<fl3；When shooting, can use eyeglass 1 to image carry out shoot and within a preset time receive focal length switching refer to
It enables to by being taken pictures for the second time to same object with eyeglass 2 to obtain and possess area image high-definition, or and also
It can continue to receive focal length switching command again in the preset time after being taken pictures for the second time by eyeglass 2, to pass through mirror
Piece 3 carries out third time to same object and takes pictures to obtain and possess further area image high-definition.When user is clapped with eyeglass 1
When taking the photograph photo, shutter is pressed in user, after eyeglass 1 has shot current picture, micromotor driving turntable makes working lens
Piece switches to eyeglass 2 from eyeglass 1 rapidly and shoots current picture by eyeglass 2, shoots current picture by eyeglass 3 again as previously described
Face, cell phone processor carries out image co-registration to the picture that three eyeglasses take later, and eyeglass 3 is shot to obtained photo and is imaged
It merges eyeglass 2 and takes the photograph to obtain corresponding region in photo imaging, eyeglass 2 is shot into obtained photo imaging fusion and enters eyeglass 1 and take the photograph to obtain to shine
Corresponding region in piece imaging generates the big visual angle photo that local detail is more clear.Since three lens angles are identical, high-resolution
It is partially in image central location.Similarly, it also can use the eyeglass even more with eyeglass 2 and eyeglass 3 of eyeglass 1 default
Same object is continuously shot in time, the picture for recycling cell phone processor to take multiple eyeglass melts
It closes, details are not described herein again.
Specifically, above-mentioned steps S110 is during concrete implementation, can with specifically includes the following steps:
S1101 is obtained by the image obtained by first eyeglass shooting and by second eyeglass shooting
Image be based on the same coordinate system demarcated, obtain uncalibrated image.
S1103 calculates the image obtained by first eyeglass shooting by the uncalibrated image and passes through institute
State the digital conversion model for the image that the shooting of the second eyeglass obtains.
S1105 by the image obtained by first eyeglass shooting and passes through according to the digital variation model
The image that the second eyeglass shooting obtains is merged.
By taking two eyeglasses as an example, when equipment dispatches from the factory adjustment, two eyeglasses are subjected to figure in the image that same position is shot
As matching.
The matching can be accomplished in several ways, for example SIFT(scale invariant feature converts Scale-invariant
Feature transform, SIFT) etc. the matching based on image characteristic point, or based on the image based on gray-scale statistical.At this
In invention, since position of two camera lenses when shooting respectively is identical, so can be sat in the present invention using in same camera lens
The method demarcated matches different images in mark system, i.e., by image that the shooting of the first eyeglass obtains and will pass through the
The image that the shooting of two eyeglasses obtains is based on the same coordinate system and is demarcated, to obtain uncalibrated image.The mark is exemplified below
Fixed method.
Such as Fig. 6 scaling board example, firstly, being demarcated to camera lens 1.Scaling board with coordinate system is placed in camera lens 1 to draw
Face center, shooting picture are as shown in Figure 7.Camera lens 2 is then switched to, shooting picture is marked as shown in figure 8, obtaining according to the calibration
Determine image, to find the coincidence corresponding region of two camera lenses, while pair of two camera lenses can be established according to the uncalibrated image
Mathematical transformation model p1 (x, the y)=p2 (ax, by) answered.Wherein p1 indicates the pixel in camera lens 1, and wherein x, y indicate the pixel
The coordinate value of point；Wherein p2 indicates the pixel in camera lens 2 with pixel p1 corresponding position in camera lens 1, and wherein ax, by indicate to be somebody's turn to do
The coordinate value of corresponding pixel points, wherein a can be equal to b, can also be not equal to b.
Second camera lens and the image of the first camera lens are overlapped area by the transformation model established when shooting, according to adjustment
Domain is fused in the first camera lens.
In fusion, kinds of schemes can be taken, for example fusion in wavelet field based on single pixel or is based on area
The fusion of characteristic of field.If implementing the fusion based on single pixel, wavelet decomposition is carried out in the picture shot to two camera lenses,
According to the overlapping region determined when camera lens adjustment, camera lens 2 is shot into the direct of the wavelet coefficient of image and replaces or be appended to camera lens 1
On the correspondence overlapping region for shooting image.
It, can be to the wavelet coefficient of two images using weighted average or other modes when borderline region is merged in processing
Filtering so that boundary is excessively more natural.Wavelet reconstruction finally is carried out to fused Wavelet image and obtains blending image.
The fixed-focus optical mirror slip of different focal length is distributed by the embodiment of the present invention in the horizontal direction, solves different optical mirror slips
The problem of larger space being needed in vertical direction zoom to make the portability of mobile terminal reduce；And the present invention is in optics
Transition processing is carried out to preview image by Digital Zoom during switching over zoom between eyeglass, makes the optical frames of different focal length
Piece realizes seamless jump in the horizontal direction, and it is clear that the preview image of presentation is stablized.The embodiment of the present invention is guaranteeing mobile terminal just
The steady and audible property of preview image in mobile terminal zooming procedure is also ensured while the property taken.
Another embodiment of the invention is intended to provide a kind of filming apparatus, to solve the change in mobile terminal shooting process
Burnt problem allows and carries out seamless zoom between the eyeglass of different focal length while guaranteeing mobile terminal convenience, makes to clap
The image stabilization taken the photograph is clear.
As shown in figure 9, described device 200 specifically includes the embodiment of the invention provides a kind of filming apparatus 200:
Lenz disc 201, the fixed-focus optical mirror slip for being respectively provided with different focal length including at least two, at least two light
Eyeglass is learned successively to be arranged on the lenz disc by focal length size along same horizontal plane.
Drive module 203, the drive module 203 is connect with the lenz disc, for driving the lenz disc, will be set
Set one at least two optical mirror slip on the lenz disc the first mirror being located in described image acquisition optical path
Piece removes described image and acquires optical path, and the second eyeglass at least two optical mirror slip is moved into described image and acquires light
Road.
Imaging sensor 205, setting are incident for that will acquire optical path by described image in described image acquisition optical path
Light on to the imaging sensor is converted to image data.
Display screen 207, for obtaining image data acquired in described image sensor, and it is raw according to described image data
At preview image.
Digital zoom module 209, for passing through number when the drive module drives the lenz disc to carry out eyeglass switching
Word zoom carries out transition processing to the preview image.
Shooting module 211 is shot for exporting shooting instruction after the completion of the switching by second eyeglass
Operation.
Specifically, the filming apparatus 200 on starting terminal device, carries out Image Acquisition.The start-up operation can touch simultaneously
It sends out the display screen 207 and shows that current preview image collected, the preview image are that filming apparatus 200 absorbs in shooting process
The realtime graphic showed by display screen 207, the filming apparatus 200 include lenz disc 201, drive module 203, image
Sensor 205, display screen 207, digital zoom module 209, shooting module 211.The lenz disc 201 includes at least two difference
Fixed-focus optical mirror slip with different focal length.
When user needs to carry out zoom on the basis of the photographic device 200 is presently in focal length, to different focal length
Fixed-focus optical mirror slip switches over.I.e. from the first eyeglass being located in described image acquisition optical path to above-mentioned at least two optical frames
The second eyeglass not being located in described image acquisition optical path in piece switches over, to change the shooting focal length of described image acquisition.
For example, when need to become larger focal length when can be on the basis of current lens focal length to the focal length mirror that the focal length than current lens is bigger
Piece switches over, when need to become smaller focal length when can on the basis of current lens focal length it is smaller to the focal length than current lens
Focus lenses switch over, shooting focal length when changing Image Acquisition with this.Optionally, these fixed-focus light with different focal length
Learning eyeglass can successively arrange according to the size of focal length along same horizontal plane, during concrete implementation, these optical mirror slips
It can control, linear can also be controlled in the horizontal direction in same plane in same plane along same horizontal plane in round.When
The optical mirror slip in the horizontal direction when same plane is controlled, is then respectively provided with to described at least two accordingly in round
The fixed-focus optical mirror slip of different focal length switch over for rotation switching, when the optical mirror slip it is linear along same horizontal plane same
When one plane is controlled, then the fixed-focus optical mirror slip for being respectively provided with different focal length to described at least two accordingly switch over for
Slide handover.Certainly, the optical mirror slip of these different focal lengths can also be distributed in the same plane in other shape, so that when needing
It can be carried out according to corresponding displacement mode when changing focal length switching eyeglass mobile to realize that eyeglass switches.
Specifically, the setting of lenz disc 201 is in 205 front of described image sensor and in this in the embodiment of the present invention
Imaging sensor 205 is parallel, and the lenz disc 201 includes at least two fixed-focus optical mirror slips for being respectively provided with different focal length, institute
Stating different fixed-focus optical mirror slips can successively be arranged on the lenz disc 201 according to the size of focal length along same horizontal plane,
So that different fixed-focus optical mirror slips can be with the imaging sensor 205 in parallel corresponding.It, should as a kind of optional embodiment
Lenz disc can be turntable, and above-mentioned optical mirror slip can be distributed on the turntable in the horizontal direction in round, can as another kind
The embodiment of choosing, the lenz disc are also possible to sliding plate, above-mentioned optical mirror slip can it is linear along same horizontal plane successively in the cunning
It is distributed on disk.When the lenz disc 201 be turntable when, then correspondingly, by the drive module 203 drive the turntable rotate into
The switching of row eyeglass；When the lenz disc 201 is sliding plate, then correspondingly, driving the sliding plate to slide by the drive module 203
Carry out eyeglass switching.Certainly, the optical mirror slip of these different focal lengths can also be planar distributed in other shape, i.e., the described mirror
Piece disk 201 can also be other device that same or similar function may be implemented in addition to can be turntable, sliding plate.
As described above, driving lenz disc 201 by drive module 203, at least two can be made by rotating or sliding
Fixed-focus optical mirror slip with different focal length passes through 205 front of imaging sensor one by one, to obtain different to same object burnt
Shooting effect away under.The embodiment of the present invention is by the fixed-focus eyeglass of setting different focal length, when needing bust shot object pair
Different eyeglasses carry out horizontal handoff, so that far-and-near focus is same clear to reach optical zoom effect away from next image is shot.
As shown in figures 9 and 11, to use three eyeglasses and lenz disc 201 is for turntable, such as eyeglass 1, eyeglass 2, mirror
Piece 3, three eyeglasses are for fixed-focus optical mirror slip, and focal length is different, it is assumed that the focal length of eyeglass 1 is fl1, the coke of eyeglass 2
Away from for fl2, the focal length of eyeglass 3 is fl3, and fl1 < fl2 < fl3, such as schemes three eyeglasses by focal length size successively in the horizontal
It is arranged on turntable, before user amplifies zoom, is carried out in front of imaging sensor 205 by the shortest eyeglass 1 of focal length
Shooting.When user needs to amplify focal length, image processor 207 issues signal to drive module 203, and drive module 203 drives
Turntable rotates, so that eyeglass 2 rotates rapidly to 205 front of imaging sensor.When user needs to continue to amplify focal length, drive
Dynamic model block 203 drives turntable rotation to make the rotation of eyeglass 3 to 205 front of imaging sensor.
As described above, lenz disc 201 rotates so that above-mentioned different fixed-focus optical mirror slip when user carries out zoom
Successively pass through imaging sensor 205, i.e. switching between progress optical mirror slip.Different focal length is respectively provided with due at least two
The focal length of fixed-focus optical mirror slip from each other be difficult to accomplish it is seamless continuous, therefore in order to guarantee at least two difference
The continuity of the preview image presented when fixed-focus optical mirror slip with different focal length is in during switching, digital zoom module
209 need to handle current lens acquired image by digital zoom before switching eyeglass.Optionally, here
Deformation process can also be done to the image while handling by digital zoom image taken to current lens, because
Fixed-focus optical mirror slip institute's acquired image of different focal length in addition to caused by the difference by focal length image it is of different sizes other than,
It is also possible to leading to the deformation for having subtle between acquired image because of the difference of eyeglass, in order not to make this image size
Variation and anamorphose when two eyeglasses switch over jump, presentation it is excessively lofty, since it is desired that being cut in eyeglass
Make the variation of image in gentle transition state by digital zoom and deformation process before changing jump, until being changed to and i.e.
When difference between image corresponding to the eyeglass switched to is very subtle or identical, optical mirror slip is just sent out
The switching jump of raw essence is unlikely to make so that entire the acquired image of handoff procedure is in the state gradually gently changed
User thinks that preview image jump is lofty.
In order to further illustrate above-mentioned transient process, still by taking Fig. 5 as an example, specifically, working as focal length when user amplifies focal length
When between fl1 and fl2, digital zoom module 209 carries out transition position to preview image based on 1 shooting picture of eyeglass
Reason.When the image corresponding to the preview image and eyeglass 2 of digital zoom and deformation process is close or equal, the driving mould of camera
Block 203 drives micromotor so that lenz disc 201 is carried out rotation to realize that eyeglass switches, and eyeglass 1 is switched to eyeglass 2, thus
Ensured the seamless jump between eyeglass, the seamless jump actually eyeglass switching during preview image seamless interfacing.
Optionally, can be when switching point will be reached in order to keep the continuity jumped, digital zoom module 209 is logical
It crosses between the focal length of digital zoom and the focal length of the eyeglass 2 to be cut shifted to and differs the first preset threshold, and by deformation
It manages when differing the second preset threshold between obtained strain image image corresponding with the eyeglass 2 to be cut that shifts to, it is believed that this
When preview image and image corresponding to eyeglass 2 it is similar or identical, at this time i.e. starting switching, so that user be maintained entirely to become
The stability of preview image in coke operation, so that handoff procedure does not influence the stability and clarity of preview image, to be promoted
User experience.The first preset threshold and the second preset threshold herein according to empirical value in the art determine, and can according to
Family demand is adjusted, herein with no restrictions.The purpose that threshold value is arranged is to allow that the case where working as the difference for preset threshold occur
Under the switching that is carried out between eyeglass in advance jump, it is clear that when the preset threshold value when herein is zero this means that zoom and
It just switches over and jumps when identical between image and the eyeglass 2 corresponding image to be cut shifted to after deformation process.
On the basis of above-mentioned amplification zoom, when continuing to amplify zoom if necessary, digital zoom module 209 will be with eyeglass
Based on 2 preview images taken, digital zoom processing is carried out, or also carry out deformation process simultaneously, when digital zoom and change
When image corresponding to the preview image and eyeglass 3 that shape is handled is close or equal, the image processor 207 of camera, which controls, to be driven
Dynamic model block 203 drives turntable 201 to carry out rotation and realizes eyeglass switching, eyeglass 2 is switched to eyeglass 3, thus between having ensured eyeglass
Seamless jump.Similarly, when user carries out diminution zoom, identical mode is also taken to carry out zoom and eyeglass hand-off process.
When user has selected a suitable shooting focal length, then exports shooting instruction and pass through the corresponding optical frames of the focal length
Piece carries out shooting operation, so that final output shoots image.
On the basis of the above embodiments, further alternative, the shooting module 211 can be also used for: when user exists
It, can be after starting camera carries out Image Acquisition, before receiving focal length switching command, according to current lens when shooting photo
1 carries out shooting operation, and is carrying out receiving focal length switching command in the preset time after the shooting operation, thus again by cutting
Eyeglass 2 after changing focal length carries out photographing operation to Same Scene.On the basis of this embodiment, as shown in Figure 10, the reality
Applying example can also include image co-registration module 213, for that will shoot the image obtained by first eyeglass and pass through described
The image that the shooting of second eyeglass obtains carries out image co-registration, i.e., after eyeglass 2 completes shooting operation, to according to eyeglass 1 and mirror
Piece 2 shoots resulting two imagings and carries out image co-registration, to promote the clarity in picture part region.
Here we still by taking above-mentioned 3 eyeglasses as an example, i.e., at least two with different focal length fixed-focus optical mirror slips be 3
Fixed-focus optical mirror slip with different focal length, it is assumed that in this 3 eyeglasses: the focal length of eyeglass 1 is fl1, and the focal length of eyeglass 2 is fl2,
The focal length of eyeglass 3 is fl3, and fl1 < fl2 < fl3；When shooting, it can use eyeglass 1 and shooting carried out to image and when default
Interior reception focal length switching command is to by taking pictures for the second time to obtain and possess fine definition to same object with eyeglass 2
Area image, or can also continue to receive focal length again in the preset time after being taken pictures for the second time by eyeglass 2 and cut
Instruction is changed, is taken pictures to carry out third time to same object by eyeglass 3 to obtain and possess further administrative division map high-definition
Picture.When user shoots photo with eyeglass 1, shutter is pressed in user, after eyeglass 1 has shot current picture, drive module
203 driving lenz discs 201 make work at present eyeglass switch to the shooting current picture of eyeglass 2 from eyeglass 1 rapidly, as previously described again
Current picture is shot by eyeglass 3, the picture that image co-registration module 213 takes three eyeglasses later merges, by mirror
Piece 3, which shoots obtained photo imaging fusion and enters eyeglass 2, takes the photograph to obtain corresponding region in photo imaging, and eyeglass 2 is shot to obtained photo
Imaging fusion enters eyeglass 1 and takes the photograph to obtain corresponding region in photo imaging, generates the big visual angle photo that is more clear of local detail.Due to two
A lens angle is identical, and high-resolution is partially in image central location.Similarly, eyeglass 1 and eyeglass 2 and eyeglass also be can use
3 even more eyeglasses are within a preset time continuously shot same object, recycle image co-registration module 213 more to this
The picture that a eyeglass takes is merged, and details are not described herein again.
Specifically, above-mentioned image co-registration module 213 can specifically include following several units:
Unit 2131 is demarcated, for by the image obtained by first eyeglass shooting and by second mirror
The image that piece shooting obtains is based on the same coordinate system and is demarcated, and obtains uncalibrated image；
Computing unit 2133, for calculating the figure obtained by first eyeglass shooting by the uncalibrated image
The digital conversion model of picture and the image obtained by second eyeglass shooting；
Integrated unit 2135, for shooting acquisition by first eyeglass for described according to the digital variation model
Image and by second eyeglass shooting obtain image merged.
By taking two eyeglasses as an example, when equipment dispatches from the factory adjustment, two eyeglasses are subjected to figure in the image that same position is shot
As matching.
The matching can be accomplished in several ways, for example SIFT(scale invariant feature converts Scale-invariant
Feature transform, SIFT) etc. the matching based on image characteristic point, or based on the image based on gray-scale statistical.At this
In invention, since position of two camera lenses when shooting respectively is identical, so so in the present invention can be using in same mirror
The method demarcated matches different images in head coordinate system, i.e., will be by image that the shooting of the first eyeglass obtains and logical
It crosses the image that the shooting of the second eyeglass obtains to be demarcated based on the same coordinate system, to obtain uncalibrated image.It is exemplified below
The method of the calibration.
If Fig. 6 demarcates version example, firstly, being demarcated to camera lens 1.Scaling board with coordinate system is placed in camera lens 1 to draw
Face center, shooting picture are as shown in Figure 7.Camera lens 2 is then switched to, shooting picture is as shown in Figure 8.It is obtained and is marked according to the calibration
Determine image, to find the coincidence corresponding region of two camera lenses, while pair of two camera lenses can be established according to the uncalibrated image
Mathematical transformation model p1 (x, the y)=p2 (ax, by) answered.Wherein p1 indicates the pixel in camera lens 1, and wherein x, y indicate the pixel
The coordinate value of point；Wherein p2 indicates the pixel in camera lens 2 with pixel p1 corresponding position in camera lens 1, and wherein ax, by indicate to be somebody's turn to do
The coordinate value of corresponding pixel points, wherein a can be equal to b, can also be not equal to b.
Second camera lens and the image of the first camera lens are overlapped area by the transformation model established when shooting, according to adjustment
Domain is fused in the first camera lens.
In fusion, kinds of schemes can be taken, for example fusion in wavelet field based on single pixel or is based on area
The fusion of characteristic of field.If implementing the fusion based on single pixel, wavelet decomposition is carried out in the picture shot to two camera lenses,
According to the overlapping region determined when camera lens adjustment, camera lens 2 is shot into the direct of the wavelet coefficient of image and replaces or be appended to camera lens 1
On the correspondence overlapping region for shooting image.
It, can be to the wavelet coefficient of two images using weighted average or other modes when borderline region is merged in processing
Filtering so that boundary is excessively more natural.Wavelet reconstruction finally is carried out to fused Wavelet image and obtains blending image.
The fixed-focus optical mirror slip of different focal length is distributed by the embodiment of the present invention in the horizontal direction, solves different optical mirror slips
The problem of larger space being needed in vertical direction zoom to make the portability of mobile terminal reduce；And the present invention is in optics
Transition processing is carried out to preview image by Digital Zoom during switching over zoom between eyeglass, makes the optical frames of different focal length
Piece realizes seamless jump in the horizontal direction, and it is clear that the preview image of presentation is stablized.The embodiment of the present invention is guaranteeing mobile terminal just
The steady and audible property of preview image in mobile terminal zooming procedure is also ensured while the property taken.
Claims (12)
1. a kind of image pickup method is applied to terminal characterized by comprising
Start camera and carry out Image Acquisition, and shows the preview image of the acquisition；The camera does not include at least two not
The optical mirror slip being located in Image Acquisition optical path simultaneously；
Receive focal length switching command；
First will be located in described image acquisition optical path at least two optical mirror slip according to the focal length switching command
Eyeglass removes described image and acquires optical path, and will not be located at least two optical mirror slip in described image acquisition optical path
Second eyeglass moves into described image acquisition optical path；
Transition processing is carried out to the preview image by digital zoom during focal length switching；
Shooting instruction is exported after the completion of the focal length switching, shooting operation is carried out by second eyeglass.
2. the method according to claim 1, wherein by the digital zoom and deformation process to the preview
Image carries out transition processing and specifically includes:
Based on the image of first eyeglass acquisition, described image is amplified by digital zoom, at deformation
Reason deforms described image；It is default when differing first between the focal length and the focal length of second eyeglass of the digital zoom
Threshold value, and when differing the second preset threshold between strain image image corresponding with second eyeglass, described image acquires light
Eyeglass in road switches to second eyeglass by first eyeglass, to complete the transition processing.
3. method according to claim 1 or 2, which is characterized in that after the starting camera carries out Image Acquisition,
Before receiving focal length switching command, the method also includes: it receives a shooting instruction and is shot by first eyeglass,
And the focal length switching command is received in the preset time after the completion of shooting.
4. according to the method described in claim 3, it is characterized in that, the method also includes being clapped by first eyeglass
It takes the photograph the image of acquisition and image co-registration is carried out by the image that second eyeglass shooting obtains.
5. according to the method described in claim 4, it is characterized in that, the image that will be obtained by first eyeglass shooting
Image co-registration is carried out with the image obtained by second eyeglass shooting, is specifically included:
It is based on by the image obtained by first eyeglass shooting and by the image that second eyeglass shooting obtains
The same coordinate system is demarcated, and uncalibrated image is obtained；
The image obtained by first eyeglass shooting is calculated by the uncalibrated image and passes through second eyeglass
Shoot the digital conversion model of the image obtained；
By the image obtained by first eyeglass shooting and pass through second mirror according to the digital variation model
The image that piece shooting obtains is merged.
6. a kind of filming apparatus is applied to terminal characterized by comprising
Lenz disc；The lenz disc includes at least two optical mirror slips for being respectively provided with different focal length, at least two light
Eyeglass is learned successively to be arranged on the lenz disc by focal length size along same horizontal plane；
Starting module；The starting module carries out Image Acquisition for starting camera；The camera does not include at least two not
The optical mirror slip being located in Image Acquisition optical path simultaneously；
Receiving module；For receiving focal length switching command；
Drive module；The drive module is connect with the lenz disc, for driving the lenz disc, will be arranged in the mirror
The the first eyeglass removal described image being located in described image acquisition optical path at least two optical mirror slip on piece disk is adopted
Collect optical path, and the second eyeglass at least two optical mirror slip is moved into described image and acquires optical path；
Imaging sensor, setting is in described image acquisition optical path for that will be incident to the image by described image acquisition optical path
Light on sensor is converted to image data；
Display screen generates preview for obtaining image data acquired in described image sensor, and according to described image data
Image；
Digital zoom module, for passing through digital zoom when the drive module drives the lenz disc to carry out eyeglass switching
Transition processing is carried out to the preview image；
Shooting module carries out shooting operation by second eyeglass for exporting shooting instruction after the completion of the switching.
7. device according to claim 6, which is characterized in that the digital zoom module is specifically used for:
Based on the image of first eyeglass acquisition, described image is amplified by digital zoom, at deformation
Reason carries out deformation to described image；It is default when differing first between the focal length and the focal length of second eyeglass of the digital zoom
Threshold value, and when differing the second preset threshold between strain image image corresponding with second eyeglass, described image acquires light
Eyeglass in road switches to second eyeglass by first eyeglass, to complete the transition processing.
8. device according to claim 6 or 7, which is characterized in that
The lenz disc is turntable, and at least two optical mirror slips are arranged in using the rotation center of the turntable as the center of circle
On annulus, wherein the center of circle of at least two optical mirror slip fall in it is described using the rotation center of the turntable as the annulus in the center of circle
On, and being arranged successively from small to large with focal length.
9. device according to claim 6 or 7, which is characterized in that
The lenz disc is sliding plate, and at least two optical mirror slips are arranged on the sliding trace of the sliding plate, wherein institute
On the central axis for the sliding trace that the center of circle for stating at least two optical mirror slips falls in the sliding plate, and with focal length from small to large according to
Secondary arrangement.
10. device according to claim 6 or 7, which is characterized in that the shooting module is also used to, and is taken the photograph in the starting
As head carry out Image Acquisition after, receive focal length switching command before, receive a shooting instruction by first eyeglass into
Row shooting, and the focal length switching command is received in the preset time after the completion of shooting.
11. device according to claim 10, which is characterized in that described device further include: image co-registration module, being used for will
The image obtained by first eyeglass shooting and the image progress image co-registration obtained by second eyeglass shooting.
12. device according to claim 11, which is characterized in that described image Fusion Module includes:
Unit is demarcated, for obtaining by the image obtained by first eyeglass shooting and by second eyeglass shooting
The image taken is based on the same coordinate system and is demarcated, and obtains uncalibrated image；
Computing unit, for calculating the image obtained by first eyeglass shooting by the uncalibrated image and passing through
The digital conversion model for the image that the second eyeglass shooting obtains；
Integrated unit, for by the image obtained by first eyeglass shooting and being led to according to the digital variation model
The image that the second eyeglass shooting obtains is crossed to be merged.
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| CN111917941B (en) * | 2019-05-08 | 2021-10-01 | 杭州海康威视数字技术股份有限公司 | Camera picture processing method and camera |
| CN111510618B (en) * | 2019-01-30 | 2022-04-05 | 虹软科技股份有限公司 | Zooming method and electronic equipment applying same |
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| CN111107265B (en) * | 2019-12-25 | 2021-10-22 | RealMe重庆移动通信有限公司 | Image processing method and device, computer readable medium and electronic equipment |
| CN113766115B (en) * | 2020-06-02 | 2023-08-04 | 北京小米移动软件有限公司 | Image acquisition method, mobile terminal, device and storage medium |
| CN111885305B (en) * | 2020-07-28 | 2022-04-29 | Oppo广东移动通信有限公司 | Preview picture processing method and device, storage medium and electronic equipment |
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| CN114520870B (en) * | 2020-11-20 | 2023-06-20 | 华为技术有限公司 | Display method and terminal |
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