CN101634796A - Camera automatic zooming method and system - Google Patents
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Abstract
The invention discloses a camera automatic zooming method and a system; the method comprises the following steps: a camera is started to enter into a shooting preview interface of a planar rectangle object; a preview image of the planar rectangle object needed to be shot is displayed on the shooting preview interface and a quadrangle representing the edges of the shot planar rectangle object is detected; whether the quadrangle representing the edges of the shot planar rectangle object is successfully detected is judged; if yes, the step 140 is switched to, if not, the step 150 is switched to; the needed zooming times are calculated according to the detected quadrangle, an optical zooming or a digital zooming mechanism of a digital camera is automatically started, so as to achieve the calculated zooming times; whether previewing is continuously carried out is judged, if yes, the step 120 is returned to preview continuously, if not, the previewing is finished. The invention can automatically adjust the focal length according to the previewed rectangle object.
Description
Technical field
The invention belongs to technical field of image processing, relate to a kind of camera Zooming method, relate in particular to a kind of camera automatic zooming method; In addition, the invention still further relates to a kind of camera automatic zooming system.
Background technology
In recent years, the application of independent digital camera and the digital camera that carries on mobile devices such as mobile phone more and more widely.Along with the raising of digital camera image quality and the increase of pixel, taking pictures with digital camera replaces the plain scan instrument and becomes possibility gradually.
Can comprise with the object that scanner scans: be printed on A4 paper, or the document on other big or small paper, various certificates such as I.D., and business card, magazine, books or the like.The billboard that also has some objects such as roadside, the panel in the exhibition, common blank and be incident upon lantern slide on the curtain wall or the like in the meeting room, these can not scan with scanner, but can take very easily with digital camera.
In digital camera, zoom is meant by changing the modes such as focal length of camera lens, changes the size of object scene in the image that shooting obtains that is taken.Zoom in the digital camera is divided into two kinds of optical zoom and Digital Zooms, optical zoom is to move by the eyeglass in the camera lens to amplify and the object scene of dwindling the needs shooting, optical zoom is by camera lens, and object and focus three parts's position changes and produces.Digital Zoom then is by the processor in the digital camera, each elemental area in the picture is increased, thereby reaching the amplification purpose, in fact is exactly to use the pixel in the zone on the CCD image sensor of digital camera the interpolation processing means to be amplified to whole image.
In the present digital camera, no matter be optical zoom or Digital Zoom, the multiple of its zoom all is that the user realizes by manually-operated.The objective of the invention is when taking foregoing planar rectangular object with digital camera, automatically adjust the zoom multiple of digital camera by the edge of the captured planar rectangular object of automatic detection, thereby guarantee that the planar rectangular object that needs to take occupies suitable size in the captured image that obtains, user-friendly.
Summary of the invention
Technical matters to be solved by this invention is: a kind of camera automatic zooming method is provided, can focuses automatically according to the rectangle object of preview.
In addition, the present invention also provides a kind of camera automatic zooming system, can focus automatically according to the rectangle object of preview.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of camera automatic zooming method, this method comprises the steps:
As a preferred embodiment of the present invention, in the described step 140, calculate the zoom multiple that needs according to detected quadrilateral, computing method for guarantee according to the quadrilateral after this zoom multiple convergent-divergent in image shared area size or/and the length of side meets predefined ratio.
As a preferred embodiment of the present invention, in the described step 140, if the user does not preestablish the shooting ratio, the user is provided with camera, make the planar rectangular object substantially parallel with the limit of camera screen on the limit of magazine preview image, the method for calculating the zoom multiple that needs is as follows:
Step 1401 is obtained the length breadth ratio a1 of camera pixel: a2;
Step 1402 is obtained the length and width of described planar rectangular object pixel in the camera preview image, and calculates its length breadth ratio b1: b2;
Step 1403 is calculated c1=b1: a1, c2=b2: a2;
Step 1404, if c1 c2, then the zoom multiple is: the length of preview image midplane rectangle object is amplified to the required multiple of 90%-100% phase captain; If c1＜c2, then the zoom multiple is: with the wide multiple that is amplified to 90%-100% phase machine width of preview image midplane rectangle object.
As a preferred embodiment of the present invention, if the optical zoom or the Digital Zoom of digital camera can not just in time reach the zoom multiple that calculates, then the optical zoom of digital camera or the zoom multiple of Digital Zoom are set to automatically: with the most approaching value of zoom multiple that calculates.
As a preferred embodiment of the present invention, in the described step 120, the user is presented at the four edges of the planar rectangular object in the shooting preview interface and detected this four edges is highlighted by the automanual mode detection of full automatic pattern or band user interactions; Under full automatic pattern, system detects the quadrilateral in the image that shows in the shooting preview interface automatically, then according to the criterion of setting, determines a quadrilateral of most possibly representing the planar rectangular object edge that will take; Described criterion comprises: the area maximum of shared image-region, or/and the most close picture centre; Under the automanual detecting pattern of band user interactions, system detects the quadrilateral in the image that shows in the shooting preview interface automatically, and the user is by clicking touch-screen or pressing the quadrilateral that button on the hard manual selects wherein to represent the planar rectangular object edge that will take then.
As a preferred embodiment of the present invention, in the described step 110, the user by set in advance or the model selection apprizing system current what need to take is the planar rectangular object; Described planar rectangular object comprises a kind of of following object: be printed on document, certificate, business card, books, magazine on the paper; Rectangle ad board on roadside or the wall, the rectangle panel in the exhibition, rectangle blank in the meeting room or blackboard, the road sign that is incident upon rectangle lantern slide on the curtain wall, rectangle, doorplate, the indicator screen of rectangle, the shop signboard of rectangle.
As a preferred embodiment of the present invention, in the described step 130, the tetragonal method in the inspection image data is: detect all straight lines in the view data earlier, check that again which straight line can constitute quadrilateral.
A kind of camera automatic zooming system, this system is in order to autozoom when the camera plane rectangle object; This system comprises:
Image acquisition unit is in order to shot object;
Display unit is in order to show the preview image of the captured object of described image acquisition unit;
Detecting unit is represented the quadrilateral of captured planar rectangular object edge in order to detection, and therefrom chooses the quadrilateral of captured object;
Zoom multiple computing unit is in order to calculate the zoom multiple that needs according to the detected quadrilateral of described detecting unit;
The zoom drive unit in order to the optical zoom or the Digital Zoom mechanism of automatic startup digital camera, reaches the zoom multiple that described zoom multiple computing unit calculates.
As a preferred embodiment of the present invention, described zoom multiple computing unit calculates the zoom multiple that needs according to detected quadrilateral, computing method for guarantee according to the quadrilateral after this zoom multiple convergent-divergent in image shared area size or/and the length of side meets predefined ratio.
As a preferred embodiment of the present invention, if the user does not preestablish the shooting ratio, the user is provided with camera, makes the planar rectangular object substantially parallel with the limit of camera screen on the limit of magazine preview image, and the method that described zoom multiple computing unit calculates the zoom multiple that needs is:
Obtain the length breadth ratio a1 of camera pixel: a2;
Obtain the length and width of described planar rectangular object pixel in the camera preview image, and calculate its length breadth ratio b1: b2;
Calculate c1=b1: a1, c2=b2: a 2;
If c1 c2, then the zoom multiple is: the length of preview image midplane rectangle object is amplified to the required multiple of 90%-100% phase captain; If c1＜c2, then the zoom multiple is: with the wide multiple that is amplified to 90%-100% phase machine width of preview image midplane rectangle object.
Beneficial effect of the present invention is: method of the present invention is utilized the technology of Flame Image Process, when taking the rectangle object of almost plane with digital camera, in the image preview window of digital camera with automatically or the semi-automatic mode of band user interactions detect the quadrilateral of the captured planar rectangular object edge of representative in the view data, automatically regulate the optical zoom of digital camera or the zoom multiple of Digital Zoom according to this quadrilateral then, thereby guarantee that the planar rectangular object that needs to take occupies suitable size in the captured image that obtains, user-friendly.
Description of drawings
Fig. 1 is the process flow diagram of camera automatic zooming method of the present invention.
Embodiment
Describe the preferred embodiments of the present invention in detail below in conjunction with accompanying drawing.
Embodiment one
The present invention is directed to the application of taking the rectangle object of almost plane with digital camera, the method for the camera automatic zooming when having disclosed a kind of rectangle object of taking almost plane.This method is when taking the rectangle object of almost plane with digital camera, in the image preview window of digital camera with automatically or the semi-automatic mode of band user interactions detect the quadrilateral of the captured planar rectangular object edge of representative in the view data, automatically regulate the optical zoom of digital camera or the zoom multiple of Digital Zoom according to this quadrilateral then, thereby guarantee that the planar rectangular object that needs to take occupies suitable size in the captured image that obtains.
See also Fig. 1, the concrete steps of camera automatic zooming method of the present invention are as follows:
[step 110] starts camera, enters the shooting preview interface of camera plane rectangle object.
Wherein, the user by set in advance or the model selection apprizing system current what need to take is the planar rectangular object, rather than general object.
Described planar rectangular object includes but not limited to: be printed on the document on A4 or other the big or small paper, certificates such as I.D., business card, books, the printing material of rectangles such as magazine, the rectangle ad board on roadside or the wall, the rectangle panel in the exhibition, common rectangle blank or blackboard in the meeting room, be incident upon the rectangle lantern slide on the curtain wall, the road sign of rectangle, doorplate, the indicator screen of rectangle, shop signboard of rectangle or the like.
Show on [step 120] shooting preview interface that the preview image of the planar rectangular object that needs shooting also detects the quadrilateral of the captured planar rectangular object edge of representative.
Wherein, the user can be by setting in advance, being chosen in the shooting preview interface is to detect the four edges of the planar rectangular object that is presented in the shooting preview interface and detected this four edges is carried out highlighted demonstration with full automatic mode or with the automanual mode of being with user interactions, or otherwise highlights.
Under full automatic pattern, system detects the quadrilateral in the image that shows in the shooting preview interface automatically, then according to certain criterion, the area maximum of shared image-region for example, perhaps the most close picture centre is determined a quadrilateral of most possibly representing the planar rectangular object edge that will take.
Under the automanual detecting pattern of band user interactions, system detects the quadrilateral in the image that shows in the shooting preview interface automatically, and the user is by clicking touch-screen or pressing the quadrilateral that button on the hard manual selects wherein to represent the planar rectangular object edge that will take then.
Do [step 130] judged: the quadrilateral that can successfully detect the captured planar rectangular object edge of representative? if answer forwards step 140 to for being, if answer forwards step 150 to for not.
Wherein, judge,, then return answer, forward step 150 to for not if do not detect quadrilateral according to testing result to the four edges that is presented at the planar rectangular object in the shooting preview interface.Otherwise return answer for being to forward step 140 to.
Quadrilateral in the inspection image data can have several different methods, and the method in the present embodiment is: detect all straight lines in the view data earlier, see that again which straight line can constitute quadrilateral.
[step 140] calculates the zoom multiple that needs according to detected quadrilateral, starts the optical zoom or the Digital Zoom mechanism of digital camera automatically, reaches the zoom multiple that calculates.
Wherein, calculate the zoom multiple that needs according to detected quadrilateral, computing method meet predefined ratio for guaranteeing according to the quadrilateral shared area size in image after this zoom multiple convergent-divergent.For example, the resolution of supposing camera the preview window is the 320*240 pixel, detected quadrilateral has occupied the 80*80 pixel in image, require captured planar rectangular object should account for 1/3 of total number of image pixels and preestablish, then calculating the zoom multiple that needs is 2, in according to the image after this zoom multiple convergent-divergent, quadrilateral will become the 160*160 pixel like this, just in time be 1/3 of 320*240 pixel.Again for example, the long limit of supposing camera the preview window is 320 pixels, minor face is 240 pixels, the long limit of detected quadrilateral is 80 pixels, and minor face is 50 pixels, and preestablish require captured planar rectangular object in image, have at least a limit to reach the long limit of image 3/4 or minor face 3/4, then calculating the zoom multiple that needs is 3, in according to the image after this zoom multiple convergent-divergent, tetragonal long limit is 240 pixels like this, and minor face is 150 pixels.
If the optical zoom of digital camera or Digital Zoom can not just in time reach the zoom multiple that calculates, the most approaching value of zoom multiple that automatically the zoom multiple of the optical zoom of digital camera or Digital Zoom is arranged on and calculates then.
The user still can change the zoom multiple of optical zoom or Digital Zoom once more by manual operations after the optical zoom of automatic change digital camera or the zoom multiple of Digital Zoom.
[step 150] judged: whether proceed preview, if answer get back to step 120 and proceed preview for being, if answer be otherwise the end preview commentaries on classics step 160.
Wherein, taken picture if the user presses shooting push button, perhaps the user selects to withdraw from camera the preview window, then returns answer for not and finish preview, otherwise returns answer for being to get back to step 120 and proceed preview.
[step 160] finishes.
In sum, method of the present invention is utilized the technology of Flame Image Process, when taking the rectangle object of almost plane with digital camera, in the image preview window of digital camera with automatically or the semi-automatic mode of band user interactions detect the quadrilateral of the captured planar rectangular object edge of representative in the view data, automatically regulate the optical zoom of digital camera or the zoom multiple of Digital Zoom according to this quadrilateral then, thereby guarantee that the planar rectangular object that needs to take occupies suitable size in the captured image that obtains, user-friendly.
Embodiment two
The difference of present embodiment and embodiment one is, in the present embodiment, if the user does not preestablish the shooting ratio, the user is provided with camera, and object center substantially parallel with the limit of camera screen is substantially at the preview window center of camera on the limit of magazine preview image to make the planar rectangular object, and the method that described zoom multiple computing unit calculates the zoom multiple that needs is:
Obtain the length breadth ratio a1 of camera pixel: a2;
Obtain the length and width of described planar rectangular object pixel in the camera preview image, and calculate its length breadth ratio b1: b2;
Calculate c1=b1: a1, c2=b2: a2;
If c1c2, then the zoom multiple is: the length of preview image midplane rectangle object is amplified to the required multiple of 90%-100% phase captain; If c1＜c2, then the zoom multiple is: with the wide multiple that is amplified to 90%-100% phase machine width of preview image midplane rectangle object.
By above-mentioned steps, can make the area maximum of the shared image-region of image of object.
If the limit and the planar rectangular object of the display screen of camera are not parallel on the limit of magazine preview image, angulation is excessive, can use the method that is similar to above-mentioned steps equally, and the area that accounts for image-region with realization shot object image is bigger.
Embodiment three
Present embodiment discloses a kind of camera automatic zooming system, and this system is in order to autozoom when the camera plane rectangle object; This system comprises image acquisition unit, display unit, detecting unit, zoom multiple computing unit, zoom drive unit.
Image acquisition unit is in order to shot object;
Display unit is in order to show the preview image of the captured object of described image acquisition unit;
Detecting unit is represented the quadrilateral of captured planar rectangular object edge in order to detection, and therefrom chooses the quadrilateral of captured object;
Zoom multiple computing unit is in order to calculate the zoom multiple that needs according to the detected quadrilateral of described detecting unit; Described zoom multiple computing unit calculates the zoom multiple that needs according to detected quadrilateral, computing method for guarantee according to the quadrilateral after this zoom multiple convergent-divergent in image shared area size or/and the length of side meets predefined ratio.
The zoom drive unit reaches the zoom multiple that described zoom multiple computing unit calculates in order to the optical zoom or the Digital Zoom mechanism of automatic startup digital camera.
If the user does not preestablish the shooting ratio, the user is provided with camera, and object center substantially parallel with the limit of camera screen is substantially at the preview window center of camera on the limit of magazine preview image to make the planar rectangular object, and the method that described zoom multiple computing unit calculates the zoom multiple that needs is:
Obtain the length breadth ratio a1 of camera pixel: a2;
Obtain the length and width of described planar rectangular object pixel in the camera preview image, and calculate its length breadth ratio b1: b2;
Calculate c1=b1: a1, c2=b2: a2;
If c1c2, then the zoom multiple is: the length of preview image midplane rectangle object is amplified to the required multiple of 90%-100% phase captain; If c1＜c2, then the zoom multiple is: with the wide multiple that is amplified to 90%-100% phase machine width of preview image midplane rectangle object.
By above-mentioned steps, can make the area maximum of the shared image-region of image of object.
Embodiment four
In order to realize the present invention, need possess following hardware condition:
Need general computing and memory storage in this equipment, comprise the CPU (central processing unit) of certain frequency, have necessarily be used for computing internal memory and be used for storage system software, the storage space of application software and various data etc.Need digital camera simultaneously.
On the touch diamond S900 of Dopod, the camera of these mobile phone belt 3,200,000 pixels can be realized method of the present invention.
Here description of the invention and application is illustrative, is not to want with scope restriction of the present invention in the above-described embodiments.Here the distortion of disclosed embodiment and change are possible, and the various parts of the replacement of embodiment and equivalence are known for those those of ordinary skill in the art.Those skilled in the art are noted that under the situation that does not break away from spirit of the present invention or essential characteristic, and the present invention can be with other form, structure, layout, ratio, and realize with other assembly, material and parts.Under the situation that does not break away from the scope of the invention and spirit, can carry out other distortion and change here to disclosed embodiment.
Claims (10)
1, a kind of camera automatic zooming method is characterized in that, this method comprises the steps:
Step 110 starts camera, enters the shooting preview interface of camera plane rectangle object;
Step 120 shows on the shooting preview interface that the preview image of the planar rectangular object that needs shooting also detects the quadrilateral of the captured planar rectangular object edge of representative;
Step 130 judges whether successfully to detect the quadrilateral of representing captured planar rectangular object edge; If answer forwards step 140 to for being, if answer forwards step 150 to for not;
Step 140 is calculated the zoom multiple that needs according to detected quadrilateral, starts the optical zoom or the Digital Zoom mechanism of digital camera automatically, reaches the zoom multiple that calculates;
Step 150 judges whether to proceed preview, if answer get back to step 120 and proceed preview for being, if answer is otherwise finishes preview.
2, camera automatic zooming method according to claim 1 is characterized in that:
In the described step 140, calculate the zoom multiple that needs according to detected quadrilateral, computing method for guarantee according to the quadrilateral after this zoom multiple convergent-divergent in image shared area size or/and the length of side meets predefined ratio.
3, camera automatic zooming method according to claim 1 is characterized in that:
In the described step 140, if the user does not preestablish the shooting ratio, the user is provided with camera, makes the planar rectangular object substantially parallel with the limit of camera screen on the limit of magazine preview image, and the method for calculating the zoom multiple that needs is as follows:
Step 1401 is obtained the length breadth ratio a1 of camera pixel: a2;
Step 1402 is obtained the length and width of described planar rectangular object pixel in the camera preview image, and calculates its length breadth ratio b1: b2;
Step 1403 is calculated c1=b1: a1, c2=b2: a2;
Step 1404, if c1 〉=c2, then the zoom multiple is: the length of preview image midplane rectangle object is amplified to the required multiple of 90%-100% phase captain; If c1＜c2, then the zoom multiple is: with the wide multiple that is amplified to 90%-100% phase machine width of preview image midplane rectangle object.
4, camera automatic zooming method according to claim 3 is characterized in that:
If the optical zoom or the Digital Zoom of digital camera can not just in time reach the zoom multiple that calculates, then the optical zoom of digital camera or the zoom multiple of Digital Zoom are set to automatically: with the most approaching value of zoom multiple that calculates.
5, camera automatic zooming method according to claim 1 is characterized in that:
In the described step 120, the user is presented at the four edges of the planar rectangular object in the shooting preview interface and detected this four edges is highlighted by the automanual mode detection of full automatic pattern or band user interactions;
Under full automatic pattern, system detects the quadrilateral in the image that shows in the shooting preview interface automatically, then according to the criterion of setting, determines a quadrilateral of most possibly representing the planar rectangular object edge that will take; Described criterion comprises: the area maximum of shared image-region, or/and the most close picture centre;
Under the automanual detecting pattern of band user interactions, system detects the quadrilateral in the image that shows in the shooting preview interface automatically, and the user is by clicking touch-screen or pressing the quadrilateral that button on the hard manual selects wherein to represent the planar rectangular object edge that will take then.
6, camera automatic zooming method according to claim 1 is characterized in that:
In the described step 110, the user by set in advance or the model selection apprizing system current what need to take is the planar rectangular object;
Described planar rectangular object comprises a kind of of following object: be printed on document, certificate, business card, books, magazine on the paper; Rectangle ad board on roadside or the wall, the rectangle panel in the exhibition, rectangle blank in the meeting room or blackboard, the road sign that is incident upon rectangle lantern slide on the curtain wall, rectangle, doorplate, the indicator screen of rectangle, the shop signboard of rectangle.
7, camera automatic zooming method according to claim 1 is characterized in that:
In the described step 130, the tetragonal method in the inspection image data is: detect all straight lines in the view data earlier, check that again which straight line can constitute quadrilateral.
8, a kind of camera automatic zooming system is characterized in that, this system is in order to autozoom when the camera plane rectangle object; This system comprises:
Image acquisition unit is in order to shot object;
Display unit is in order to show the preview image of the captured object of described image acquisition unit;
Detecting unit is represented the quadrilateral of captured planar rectangular object edge in order to detection, and therefrom chooses the quadrilateral of captured object;
Zoom multiple computing unit is in order to calculate the zoom multiple that needs according to the detected quadrilateral of described detecting unit;
The zoom drive unit in order to the optical zoom or the Digital Zoom mechanism of automatic startup digital camera, reaches the zoom multiple that described zoom multiple computing unit calculates.
9, camera automatic zooming according to claim 8 system is characterized in that:
Described zoom multiple computing unit calculates the zoom multiple that needs according to detected quadrilateral, computing method for guarantee according to the quadrilateral after this zoom multiple convergent-divergent in image shared area size or/and the length of side meets predefined ratio.
10, camera automatic zooming according to claim 8 system is characterized in that:
If the user does not preestablish the shooting ratio, the user is provided with camera, makes the planar rectangular object substantially parallel with the limit of camera screen on the limit of magazine preview image, and the method that described zoom multiple computing unit calculates the zoom multiple that needs is:
Obtain the length breadth ratio a1 of camera pixel: a2;
Obtain the length and width of described planar rectangular object pixel in the camera preview image, and calculate its length breadth ratio b1: b2;
Calculate c1=b1: a1, c2=b2: a2;
If c1 〉=c2, then the zoom multiple is: the length of preview image midplane rectangle object is amplified to the required multiple of 90%-100% phase captain; If c1＜c2, then the zoom multiple is: with the wide multiple that is amplified to 90%-100% phase machine width of preview image midplane rectangle object.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102902452A (en) * | 2012-08-06 | 2013-01-30 | 北京小米科技有限责任公司 | Method for photographing image and mobile terminal |
| CN103795933A (en) * | 2014-03-03 | 2014-05-14 | 联想(北京)有限公司 | Image processing method and electronic device |
| CN105578046A (en) * | 2015-12-21 | 2016-05-11 | 魅族科技（中国）有限公司 | Image acquisition method and terminal |
| WO2016154806A1 (en) * | 2015-03-27 | 2016-10-06 | 华为技术有限公司 | Automatic zooming method and device |
| CN106210500A (en) * | 2015-01-19 | 2016-12-07 | 联发科技股份有限公司 | Perform method and device thereof that preview controls in an electronic |
| CN107277359A (en) * | 2017-07-13 | 2017-10-20 | 深圳市魔眼科技有限公司 | Method, device, mobile terminal and the storage medium of adaptive zoom in 3D scannings |
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| CN103795933A (en) * | 2014-03-03 | 2014-05-14 | 联想(北京)有限公司 | Image processing method and electronic device |
| CN103795933B (en) * | 2014-03-03 | 2018-02-23 | 联想(北京)有限公司 | A kind of image processing method and electronic equipment |
| CN106210500B (en) * | 2015-01-19 | 2019-10-22 | 联发科技股份有限公司 | The method and device thereof of preview control are executed in an electronic |
| CN106210500A (en) * | 2015-01-19 | 2016-12-07 | 联发科技股份有限公司 | Perform method and device thereof that preview controls in an electronic |
| WO2016154806A1 (en) * | 2015-03-27 | 2016-10-06 | 华为技术有限公司 | Automatic zooming method and device |
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| CN107343155A (en) * | 2017-07-10 | 2017-11-10 | 广东欧珀移动通信有限公司 | Suppress method and device, the terminal device of AEC saltus steps |
| US10819913B2 (en) | 2017-07-10 | 2020-10-27 | Guangdong Oppo Mobile Telecomunnications Corp., Ltd. | Method and apparatus for inhibiting AEC jump, and terminal device |
| CN107277359A (en) * | 2017-07-13 | 2017-10-20 | 深圳市魔眼科技有限公司 | Method, device, mobile terminal and the storage medium of adaptive zoom in 3D scannings |
| CN108200350A (en) * | 2018-03-30 | 2018-06-22 | 努比亚技术有限公司 | Autozoom image pickup method, mobile terminal and computer readable storage medium |
| CN110602401A (en) * | 2019-09-17 | 2019-12-20 | 维沃移动通信有限公司 | Photographing method and terminal |
| CN113810604A (en) * | 2021-08-12 | 2021-12-17 | 荣耀终端有限公司 | Document shooting method and device |
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