CN103873693B - Method and mobile terminal for automatically correcting photo shooting angle according to gravitational acceleration - Google Patents
Method and mobile terminal for automatically correcting photo shooting angle according to gravitational acceleration Download PDFInfo
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- CN103873693B CN103873693B CN201410110337.8A CN201410110337A CN103873693B CN 103873693 B CN103873693 B CN 103873693B CN 201410110337 A CN201410110337 A CN 201410110337A CN 103873693 B CN103873693 B CN 103873693B
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Abstract
The invention discloses a method and mobile terminal for automatically correcting a photo shooting angle according to gravitational acceleration. The method includes the steps that A, the mobile terminal receives an operation instruction of a user to enter a photo shooting mode, meanwhile starts the automatic correcting function and automatically records the shooting angle of the mobile terminal in the photo shooting process; B, the deflection angle between the shooting angle of the mobile terminal in the photo shooting process and a preset initial angle is calculated; C, when photos are previewed, the mobile terminal automatically rotates the previewed photos to the preset initial angle of the mobile terminal according to the deflection angle. The method that the gravitational acceleration g is taken as the reference direction, the deflection angle when the mobile terminal shoots the photos is automatically recorded, and when previewed, the photos are retrograde rotated to the initial angle according to the deflection angle is adopted. Through the method, the rotation angles of the photos can be corrected automatically, shooting is not limited by the shooting angle and can be achieved at multiple angles freely, the shooting difficulty is reduced, and the expectant shooting effect can be achieved easily.
Description
Technical field
The field the present invention relates to mobile terminal is taken pictures, more particularly to one kind according to acceleration of gravity from dynamic(al) correction photograph taking
The method of angle.
Background technology
With the popularization of the portable mobile termianls such as smart mobile phone, panel computer, its various application of function is also wide
Welcome, wherein camera function is one of the most frequently used function of most important of which.But during taking pictures, due to placing not
Stable or hand-held angle problem, or want situations such as reaching certain shooting effect, mobile terminal exist when shooting and certain incline
Rake angle.In this case the photograph for shooting can only rotate in preview, at present 0 degree, 90 degree, the fixed angle such as 180 degree enter,
And can be rotated according to inclination angle when shooting automatically.Meanwhile, it is to ensure that captured photo is not inclined, user need to be use up when taking pictures
It is possible to make photographing device holding and horizon horizontally or vertically state, it is impossible to freely to be shot with arbitrarily angled.But, due to handss
Holding equipment does not have fixed mount, and user's both hands need to be leaned on to remain stable, so the angle for shooting still can be subject to shadow to a certain extent
Ring, it is difficult to produce a desired effect.
The content of the invention
The technical problem to be solved in the present invention is, for the drawbacks described above of prior art, there is provided one kind adds according to gravity
Method of the speed from dynamic(al) correction photograph taking angle.The method passes through acceleration of gravity direction for reference direction, and adjust automatically is shone
Piece angle of inclination, is no longer affected by shooting angle, user can Multi-angle free shoot, reduce shooting difficulty, user can be light
Shooting effect expected from the realization of pine.
The technical proposal for solving the technical problem of the invention is as follows：
It is a kind of according to acceleration of gravity from the method for dynamic(al) correction photograph taking angle, wherein, comprise the following steps：
A, the operational order of mobile terminal receive user enter Photographing Mode, while zero offset capability is opened, and automatically
Shooting angle residing for mobile terminal when record is taken pictures；
Deflection angle when B, calculating are taken pictures residing for mobile terminal between shooting angle and initial angle set in advance；
When C, previewing photos, previewing photos are rotated automatically advance to mobile terminal by mobile terminal according to the deflection angle
The initial angle of setting.
It is described it is a kind of according to acceleration of gravity from the method for dynamic(al) correction photograph taking angle, wherein, in step B also
Including step：
B1：Setting initial position the corresponding initial angle of automatic storage；
B2：Calculate and record the deflection angle between residing shooting angle and initial angle when mobile terminal is taken pictures.
It is described it is a kind of according to acceleration of gravity from the method for dynamic(al) correction photograph taking angle, it is characterised in that the bat
Angle and initial angle is taken the photograph, wherein described angle is represented by way of rectangular coordinate system in space, specially：With parallel to institute
It is positive for X-axis to the right to state mobile terminal screen up-and-down boundary level, parallel to the mobile terminal screen right boundary vertically to
It is upper for Z axis it is positive, it is outwards positive for Y-axis along mobile terminal screen perpendicular to X-axis, Z axis, set up rectangular coordinate system in space, and with
Gravity acceleration g is reference direction.
It is described it is a kind of according to acceleration of gravity from the method for dynamic(al) correction photograph taking angle, wherein, the X-axis, Y-axis, Z
Angle vector between axle and gravity acceleration g is shooting angle.
It is described it is a kind of according to acceleration of gravity from the method for dynamic(al) correction photograph taking angle, wherein, when mobile terminal it is perpendicular
Straight to place, the X-axis is horizontal, and the Y-axis vertical screen is outside, when the Z axis are overlapped with g, the mobile terminal
In initial position, the X-axis, Y-axis, the angle vector of Z axis relative gravity acceleration g are initial angle.
It is described it is a kind of according to acceleration of gravity from the method for dynamic(al) correction photograph taking angle, wherein, the step B2 tool
Body is：When taking pictures, mobile terminal obtains the angle vector of X-axis, Y-axis, Z axis with respect to g automatically, and calculates the angle vector relatively just
The deflection angle vector of beginning angle, by the storage deflection angle vector corresponding with photo.
It is described it is a kind of according to acceleration of gravity from the method for dynamic(al) correction photograph taking angle, wherein, the deflection angle
Vector is that mobile terminal is returned the angle vector that initial angle need to rotate from shooting angle counter-rotating.
It is described it is a kind of according to acceleration of gravity from the method for dynamic(al) correction photograph taking angle, wherein, according to space right-angle
Coordinate system right-hand rule, when mobile terminal is in initial position, the positive and negative semiaxis of X-axis, Y-axis, Z axis is relative to gravity acceleration g
Initial angle, be recited as by (x, y, z)（90,90,180）.
It is a kind of according to acceleration of gravity from the method for dynamic(al) correction photograph taking angle, wherein, step C is specially：
When user's previewing photos, mobile terminal can according to shoot when record X-axis, Y-axis, Z axis relative to initial position deflection
Angle, is about to certainly photo counter-rotating to initial angle, and shows postrotational photo in preview.
A kind of mobile terminal, wherein, including：
Receiving record module, the operational order for controlling mobile terminal receive user enter Photographing Mode, while opening
Zero offset capability, and shooting angle residing for mobile terminal when record is taken pictures automatically；
Calculate processing module, for calculate take pictures when shooting angle residing for mobile terminal and initial angle set in advance it
Between deflection angle；
Photograph preview processing module, during for previewing photos, control mobile terminal automatically will be pre- according to the deflection angle
Photo of looking at rotates initial angle set in advance to mobile terminal.
It is provided by the present invention it is a kind of according to acceleration of gravity from the method for dynamic(al) correction photograph taking angle, as a result of
Reference direction is used as by gravity acceleration g, deflection angle when record mobile terminal shoots automatically, according to this during photo preview
Initial angle is returned in deflection angle counter-rotating.With it, can no longer receive from the anglec of rotation of dynamic(al) correction photo during preview
The restriction of shooting angle, user can Multi-angle free shoot, reduce shooting difficulty, user can easily achieve expected shooting
Effect.
Description of the drawings
Fig. 1 be the present invention it is a kind of according to acceleration of gravity from the method implementing procedure figure of dynamic(al) correction photograph taking angle.
Fig. 2 be the present invention it is a kind of according to acceleration of gravity from the embodiment of the method for dynamic(al) correction photograph taking angle, mobile phone
Initial position schematic diagram.
Fig. 3 is the Geometric Modeling schematic diagram of correspondence Fig. 2.
Fig. 4 be the present invention it is a kind of according to acceleration of gravity from the embodiment of the method for dynamic(al) correction photograph taking angle, mobile phone
45 ° of schematic diagrams are inclined to the right clockwise.
Fig. 5 is the Geometric Modeling schematic diagram of correspondence Fig. 4.
Fig. 6 be the present invention it is a kind of according to acceleration of gravity from the embodiment of the method for dynamic(al) correction photograph taking angle, mobile phone
135 ° of schematic diagrams are inclined to the right clockwise.
Fig. 7 is the Geometric Modeling schematic diagram of correspondence Fig. 6.
Fig. 8 be the present invention it is a kind of according to acceleration of gravity from the embodiment of the method for dynamic(al) correction photograph taking angle, mobile phone
Incline 90 ° of schematic diagrams to the left counterclockwise.
Fig. 9 is the Geometric Modeling schematic diagram of correspondence Fig. 8.
Figure 10 be the present invention it is a kind of according to acceleration of gravity from the embodiment of the method for dynamic(al) correction photograph taking angle, mobile phone
Tilt backwards 45 ° of schematic diagrams.
Figure 11 is the Geometric Modeling schematic diagram of correspondence Figure 10.
Figure 12 be it is a kind of with the present invention according to acceleration of gravity from the corresponding shifting of the method for dynamic(al) correction photograph taking angle
The functional schematic block diagram of dynamic terminal.
Specific embodiment
For making the objects, technical solutions and advantages of the present invention clearer, clear and definite, develop simultaneously embodiment pair referring to the drawings
The present invention is further described.It should be appreciated that specific embodiment described herein is only to explain the present invention, and without
It is of the invention in limiting.
The embodiment of the present invention provided it is a kind of according to acceleration of gravity from the method for dynamic(al) correction photograph taking angle, such as scheme
Shown in 1, comprise the following steps：
Step S100, the operational order of mobile terminal receive user enter Photographing Mode, while zero offset capability is opened,
And shooting angle residing for mobile terminal when record is taken pictures automatically.
The embodiment of the present invention need to record shooting angle residing for mobile terminal when taking pictures when starting to take pictures into exposal model.
Deflection when step S200, calculating are taken pictures residing for mobile terminal between shooting angle and initial angle set in advance
Angle.
In this step, need first to set initial position the corresponding initial angle of automatic storage；Then calculate and record
Deflection angle when mobile terminal is taken pictures between residing shooting angle and initial angle.
Wherein, the shooting angle is angle residing when mobile terminal shoots, and initial angle is traditionally arranged to be vertically
In the angle on ground, wherein described angle is represented by way of rectangular coordinate system in space, specially：With parallel to the shifting
Dynamic terminal screen up-and-down boundary level is positive for X-axis to the right, is Z straight up parallel to the mobile terminal screen right boundary
Axle is positive, outwards positive for Y-axis along mobile terminal screen perpendicular to X-axis, Z axis, sets up rectangular coordinate system in space, and is added with gravity
Speed g is reference direction, i.e., described X-axis, the angle vector between Y-axis, Z axis and gravity acceleration g are shooting angle.
The described initial angle of certain but this enforcement is not limited to the angle perpendicular to ground can be with the custom according to user
Arrange.
When step S300, previewing photos, mobile terminal is rotated previewing photos to movement automatically according to the deflection angle
Terminal initial angle set in advance.
In order to it is clearer explain the present invention, mobile terminal of the present invention in the present embodiment will by taking mobile phone as an example,
Model space geometric is set up with reference to rectangular coordinate system in space.
Set up space multistory geometric model for convenience, in the embodiment of the present invention by the mobile phone be abstracted as one it is square
Direction sensing device, as shown in Fig. 2-Fig. 3, is abstracted as 1 point of O inside square, and is built as zero with point O by body
Vertical rectangular coordinate system in space.Wherein with positive as X-axis to the right parallel to 110 level of mobile terminal screen upper and lower side frame, put down
Row is positive for Z axis straight up in the mobile terminal screen left and right side frame 120, perpendicular to X-axis, Z axis along mobile terminal screen
It is positive for Y-axis inwards, rectangular coordinate system in space is set up, and with gravity acceleration g as reference direction.
Further, when user is taken pictures, X-axis, Y-axis, Z axis and gravity described in corresponding space multistory geometric model
Angle between acceleration g is shooting angle.
Mobile phone is opened according to step A to enter exposal model and open automatic Proofreading function；
Into step B1, set when mobile phone is vertically placed, the X-axis is horizontal, the Y-axis vertical screen to
Outward, when the Z axis are overlapped with g, the mobile phone is in initial position, the X-axis, Y-axis, the angle of Z axis relative gravity acceleration g
For initial angle.Other positions can certainly be taken as initial position, this will be set according to the custom of different user.
According to rectangular coordinate system in space right-hand rule, when vector is rotated clockwise angle be negative value, rotate counterclockwise
When be on the occasion of.Coordinate axess X, Y, Z positive axis is denoted as with respect to the angle vector of g（x,y,z）, half is in initial position when the mobile phone
When, now Z axis are overlapped with acceleration of gravity direction.X positive axis be gravity acceleration g in XOZ planes along rotate counterclockwise
90°（Or turn clockwise 270 °）, it is denoted as 90.Y positive axis be g in the YOZ planes along 90 ° of rotate counterclockwise（Or dextrorotation
Turn 270 °）, it is denoted as 90.Z positive axis be g in the XOZ planes along 180 ° of rotate counterclockwise（Or turn clockwise 180 °）, it is denoted as
180.Initial angle of coordinate axess X, Y, Z positive axis relative to gravity acceleration g, is recited as angle vector a by (x, y, z)（90,
90,180）.Record mobile terminal angle residing when taking pictures is obtained through rotation all on the basis of this initial angle.
Further, if mobile phone vertically take pictures to the right by any rotation, here as a example by 45 ° to the right, such as Fig. 4-Fig. 5 institutes
Show, i.e., square turns clockwise 45 ° around Y-axis（Or 315 ° of rotate counterclockwise）.Now X positive axis exists for gravity acceleration g
Along 45 ° of rotate counterclockwise in XOZ planes（Or turn clockwise 315 °）, it is denoted as 45.Y-axis does not change relative to g angles, is denoted as
90.Z positive axis be g in the XOZ planes along 135 ° of rotate counterclockwise（Or turn clockwise 225 °）, it is denoted as 135.Now coordinate axess
Angle of X, Y, Z positive axis relative to gravity acceleration g, is recited as angle vector b by (x, y, z)（45,90,135）.Angle is sweared
Amount b（45,90,135）Relative to angle vector a（90,90,180）Deflection angle is deflection angle vector b 1（45,0,45）.According to
Step B2, when taking pictures, present position during system automatic detection mobile phone photograph, i.e. angle vector b（45,90,135）, and calculate
Relative to initial position angle vector a（90,90,180）Deflection angle vector b 1（45,0,45）, and by deflection angle vector
b1（45,0,45）With taken a picture corresponding storage.When user's preview photo, according to step C, system is according to corresponding deflection
Angle vector b 1（45,0,45）, by the photo counter-rotating, will photo around 45 ° of Y-axis rotate counterclockwise on screen show
Show.
If mobile phone vertically take pictures to the right by any rotation, here as a example by 135 ° to the right, as Figure 6-Figure 7, i.e., just
Cube turns clockwise 135 ° around Y-axis（Or 225 ° of rotate counterclockwise）.Now X positive axis is that gravity acceleration g is flat in XOZ
45 ° are rotated clockwise in face（Or 315 ° of rotate counterclockwise）, it is denoted as -45.Y-axis does not change relative to g angles, is denoted as 90.Z
Positive axis be g in the XOZ planes along 45 ° of rotate counterclockwise（Or turn clockwise 315 °）, it is denoted as 45.Now coordinate axess X, Y, Z
Angle of the positive axis relative to gravity acceleration g, is recited as angle vector C by (x, y, z)（- 45,90,45）.Angle vector C（-
45,90,45）Relative to angle vector a（90,90,180）Deflection angle is angle vector C 1（135,0,135）.According to step
B2, when taking pictures, present position during system automatic detection mobile phone photograph, i.e. angle vector C（- 45,90,45）, and calculate relative
In the deflection angle vector C 1 of initial position angle vector a（135,0,135）, and deflection angle vector C 1 is right with taken a picture
Should store.When user's preview photo, according to step C, system is according to corresponding deflection angle vector C 1（135,0,135）,
By the photo counter-rotating, will photo show on screen around 135 ° of Y-axis rotate counterclockwise.
In the same manner, if mobile phone vertically take pictures to the left by any rotation, here as a example by 90 ° to the left, i.e. mobile phone upper end is on a left side
When right laterally disposed, as illustrated in figs. 8-9, i.e., square surrounds 90 ° of Y-axis rotate counterclockwise for lower end（Or turn clockwise
270°）.Now X positive axis be gravity acceleration g in the XOZ planes along 180 ° of rotate counterclockwise（Or 180 ° of rotate counterclockwise）,
It is denoted as 180.Y-axis does not change relative to g angles, is denoted as 90.Z positive axis rotates clockwise 90 ° for g in XOZ planes（Or
270 ° of rotate counterclockwise）, it is denoted as -90.Now angle of coordinate axess X, Y, Z positive axis relative to gravity acceleration g, by (x, y,
Z) it is recited as angle vector d（180,90, -90）.Angle vector d（180,90, -90）Relative to angle vector a（90,90,180）
Deflection angle is angle vector d1（-90,0, -90）It is according to step B2, when taking pictures, residing during system automatic detection mobile phone photograph
Position, i.e. angle vector d（180,90, -90）, and calculate relative to initial position angle vector a（90,90,180）Deflection
Angle vector d1（-90,0, -90）, and by deflection angle vector d1（-90,0, -90）With taken a picture corresponding storage.When with
During the family preview photo, according to step C, system is according to corresponding deflection angle vector d1（-90,0, -90）, will be the photo inverse
To rotation, will photo show on screen around 90 ° of Y-axis rotate counterclockwise.
If the vertical back rotation of mobile phone is arbitrarily angled taking pictures, here as a example by 45 ° backward, as shown in Figure 10-Figure 11, i.e., just
Cube turns clockwise 45 ° around X-axis（Or 315 ° of rotate counterclockwise）.Now X-axis does not change relative to g angles, is denoted as 90.
Y positive axis 45 ° of rotate counterclockwise in the YOZ planes relative to g, is denoted as 45.Z positive axis is g rotate counterclockwises in the YOZ planes
45°（Or 270 ° of rotate counterclockwise）, it is denoted as 45.Now coordinate axess X, Y, Z positive axis is pressed relative to the angle of gravity acceleration g
(x, y, z) is recited as angle vector e（90,45,45）.Angle vector e（90,45,45）Relative to angle vector a（90,90,
180）Deflection angle is angle vector e1（0,45, 45）According to step B2, when taking pictures, system automatic detection mobile phone photograph when institute
Place position, i.e. angle vector e（90,45,45）, and calculate relative to initial position angle vector a（90,90,180）Deflection
Angle vector e1（0,45, 45）, and by deflection angle vector e1（0,45, 45）With taken a picture corresponding storage.When user it is pre-
Look at the photo when, according to step C, system is according to corresponding deflection angle vector e1（0,45, 45）, by the photo counter-rotating,
Will photo show on screen around 45 ° of X-axis rotate counterclockwise.
It should be noted that：When the present invention is embodied as, mobile phone tilts backwards 45 degree of angles and shoots different size articles or not
With during article angle shot, the picture effect for presenting is different, and the effect requirements according to required for user, has but
It is to recover original angle.But, some photographed scenes, when shooting the film of giant-screen projection when such as attending a lecture, mobile phone
Tilt backwards certain angle shooting, then be necessary to be rotated during preview.In addition, the initial angle of the present invention is in fact not
When must be that mobile phone is vertically placed, because its real user is in preview mobile phone, 45 degree of angles be usually tilted backwards, so, initially
Position can be to be accustomed to what is changed according to user's preview.
Method of the present invention passes through acceleration of gravity direction for reference direction, adjust automatically photo angle of inclination, no
Affected by shooting angle again, user can Multi-angle free shoot, reduce shooting difficulty, user can easily achieve expected
Shooting effect.
Based on above-described embodiment present invention also offers a kind of mobile terminal, as shown in figure 12, including：
Receiving record module 410, the operational order for controlling mobile terminal receive user enter Photographing Mode, while opening
Open zero offset capability, and shooting angle residing for mobile terminal when record is taken pictures automatically；As detailed above.
Processing module 420 is calculated, shooting angle residing for mobile terminal and initial angle set in advance when taking pictures for calculating
Deflection angle between degree；As detailed above.
Photograph preview processing module 430, during for previewing photos, control mobile terminal automatically will according to the deflection angle
Previewing photos rotate initial angle set in advance to mobile terminal；As detailed above.
In sum, in the present invention, anglec of rotation when mobile terminal is taken pictures is arbitrarily angled, and no matter mobile terminal is taken
What angle is shot, the method for its automatic Proofreading photo anglec of rotation with the present embodiment at several angles for enumerating
Reason principle is identical, in view of several shooting angle enumerated in the present embodiment have clearly illustrated the principle of the present invention, here is no longer
Enumerate.
It is used as reference direction as a result of by gravity acceleration g, deflection angle when record mobile terminal shoots automatically
Degree, returns initial angle according to this deflection angle counter-rotating during photo preview.With it, can shine from dynamic(al) correction during preview
The anglec of rotation of piece, is no longer limited by shooting angle, user can Multi-angle free shoot, reduce shooting difficulty, Yong Huke
Shooting effect expected from easily realizing.
It should be appreciated that the application of the present invention is not limited to above-mentioned citing, and for those of ordinary skills, can
To be improved according to the above description or be converted, all these modifications and variations should all belong to the guarantor of claims of the present invention
Shield scope.
Claims (6)
1. it is a kind of according to acceleration of gravity from the method for dynamic(al) correction photograph taking angle, it is characterised in that comprise the following steps：
A, the operational order of mobile terminal receive user enter Photographing Mode, while opening zero offset capability, and record automatically
Shooting angle residing for mobile terminal when taking pictures；
Deflection angle when B, calculating are taken pictures residing for mobile terminal between shooting angle and initial angle set in advance；
When C, previewing photos, mobile terminal rotates previewing photos to mobile terminal according to the deflection angle automatically and presets
Initial angle；The initial angle is arranged according to the custom of user；
Also include step in step B：
B1：Setting initial position the corresponding initial angle of automatic storage；
B2：Calculate and record the deflection angle between residing shooting angle and initial angle when mobile terminal is taken pictures；
The shooting angle and initial angle, wherein angle are represented by way of rectangular coordinate system in space, specially：With flat
Row is positive for X-axis to the right in the mobile terminal screen up-and-down boundary level, parallel to the mobile terminal screen right boundary
It is positive for Z axis straight up, it is outwards positive for Y-axis along mobile terminal screen perpendicular to X-axis, Z axis, set up rectangular space coordinate
System, and with gravity acceleration g as reference direction；
The X-axis, the angle vector between Y-axis, Z axis and gravity acceleration g are shooting angle；
According to rectangular coordinate system in space right-hand rule, when vector is rotated clockwise, angle is negative value, during rotate counterclockwise is
On the occasion of；Coordinate axess X, Y, Z positive axis is denoted as with respect to the angle vector of g（x,y,z）, when the mobile terminal is in initial position
When, now Z axis are overlapped with acceleration of gravity direction；X positive axis be gravity acceleration g in XOZ planes along rotate counterclockwise
90 ° turn clockwise 270 °, are denoted as 90；Y positive axis along 90 ° of rotate counterclockwise or turns clockwise in YOZ planes for g
270 °, it is denoted as 90；Z positive axis along 180 ° of rotate counterclockwise or turns clockwise 180 ° for g in XOZ planes, is denoted as 180；X
Initial angle of the positive and negative semiaxis of axle, Y-axis, Z axis relative to gravity acceleration g, is recited as angle vector a by (x, y, z)（90,90,
180）；Record mobile terminal angle residing when taking pictures is obtained through rotation all on the basis of this initial angle.
2. it is according to claim 1 it is a kind of according to acceleration of gravity from the method for dynamic(al) correction photograph taking angle, its feature
It is that, when mobile terminal is vertically placed, the X-axis is horizontal, outwards, the Z axis are heavy with g for the Y-axis vertical screen
During conjunction, the mobile terminal is in initial position, and the X-axis, Y-axis, the angle vector of Z axis relative gravity acceleration g are initial
Angle.
3. it is according to claim 1 it is a kind of according to acceleration of gravity from the method for dynamic(al) correction photograph taking angle, its feature
It is that step B2 is specially：When taking pictures, mobile terminal obtains the angle vector of X-axis, Y-axis, Z axis with respect to g automatically, and counts
Deflection angle vector of the angle vector with respect to initial angle is calculated, by the storage deflection angle vector corresponding with photo.
4. it is according to claim 3 it is a kind of according to acceleration of gravity from the method for dynamic(al) correction photograph taking angle, its feature
It is that the deflection angle vector is that mobile terminal is returned the angle arrow that initial angle need to rotate from shooting angle counter-rotating
Amount.
5. a kind of according to claim 1-4 any one according to acceleration of gravity from the side of dynamic(al) correction photograph taking angle
Method, it is characterised in that step C is specially：When user's previewing photos, mobile terminal can be according to the X recorded when shooting
The deflection angle of axle, Y-axis, Z axis relative to initial position, is about to photo counter-rotating certainly to initial angle, and shows in preview
Show postrotational photo.
6. a kind of mobile terminal, it is characterised in that include：
Receiving record module, the operational order for controlling mobile terminal receive user enter Photographing Mode, while opening automatic
Calibration function, and shooting angle residing for mobile terminal when record is taken pictures automatically；
Processing module is calculated, when taking pictures for calculating residing for mobile terminal between shooting angle and initial angle set in advance
Deflection angle；Initial position the corresponding initial angle of automatic storage are set first；Then calculate and record mobile terminal to take pictures
When deflection angle between residing shooting angle and initial angle；
Photograph preview processing module, during for previewing photos, preview is shone automatically by control mobile terminal according to the deflection angle
Piece rotates initial angle set in advance to mobile terminal；The initial angle is arranged according to the custom of user；
The shooting angle and initial angle, wherein angle are represented by way of rectangular coordinate system in space, specially：With flat
Row is positive for X-axis to the right in the mobile terminal screen up-and-down boundary level, parallel to the mobile terminal screen right boundary
It is positive for Z axis straight up, it is outwards positive for Y-axis along mobile terminal screen perpendicular to X-axis, Z axis, set up rectangular space coordinate
System, and with gravity acceleration g as reference direction；
The X-axis, the angle vector between Y-axis, Z axis and gravity acceleration g are shooting angle；
According to rectangular coordinate system in space right-hand rule, when vector is rotated clockwise, angle is negative value, during rotate counterclockwise is
On the occasion of；Coordinate axess X, Y, Z positive axis is denoted as with respect to the angle vector of g（x,y,z）, when the mobile terminal is in initial position
When, now Z axis are overlapped with acceleration of gravity direction；X positive axis be gravity acceleration g in XOZ planes along rotate counterclockwise
90 ° turn clockwise 270 °, are denoted as 90；Y positive axis along 90 ° of rotate counterclockwise or turns clockwise in YOZ planes for g
270 °, it is denoted as 90；Z positive axis along 180 ° of rotate counterclockwise or turns clockwise 180 ° for g in XOZ planes, is denoted as 180；X
Initial angle of the positive and negative semiaxis of axle, Y-axis, Z axis relative to gravity acceleration g, is recited as angle vector a by (x, y, z)（90,90,
180）；Record mobile terminal angle residing when taking pictures is obtained through rotation all on the basis of this initial angle.
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| CN201410110337.8A CN103873693B (en) | 2014-03-24 | 2014-03-24 | Method and mobile terminal for automatically correcting photo shooting angle according to gravitational acceleration |
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| CN201410110337.8A CN103873693B (en) | 2014-03-24 | 2014-03-24 | Method and mobile terminal for automatically correcting photo shooting angle according to gravitational acceleration |
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| CN104363386B (en) * | 2014-11-14 | 2017-10-17 | 广东欧珀移动通信有限公司 | Photo processing method and device |
| CN104702857A (en) * | 2015-03-27 | 2015-06-10 | 合肥联宝信息技术有限公司 | Method and device for processing angles of imaged pictures |
| CN106303198A (en) * | 2015-05-29 | 2017-01-04 | 小米科技有限责任公司 | Photographing information acquisition methods and device |
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