CN105007421A - Picture shooting method and mobile terminal - Google Patents
Picture shooting method and mobile terminal Download PDFInfo
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- CN105007421A CN105007421A CN201510411564.9A CN201510411564A CN105007421A CN 105007421 A CN105007421 A CN 105007421A CN 201510411564 A CN201510411564 A CN 201510411564A CN 105007421 A CN105007421 A CN 105007421A
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Abstract
Embodiments of the invention disclose a picture shooting method and a mobile terminal, relating to the field of electronic technique. The method comprises the steps of shooting a target object according to preset interval time, so as to obtain shot images; when a shooting order is received, acquiring a plurality of shot images shot in a preset time period; separately calculating a sharpness value of each of the plurality of shot images; and determining the shot image with the largest sharpness value among the plurality of shot images as the shot image of the target object. Through adoption of the method, even if the mobile terminal shakes while shooting, the shot image can be guaranteed to have high definition, images shot in the time range close to the shooting time point are acquired, the finally acquired image content can be guaranteed to meet the shooting requirement of a user, the image shooting quality is improved, and the user experience is improved.
Description
Technical field
The present invention relates to electronic technology field, be specifically related to a kind of picture shooting method and mobile terminal.
Background technology
Present mobile terminal, if smart mobile phone, panel computer etc. are before camera takes in use, can carry out captured in real-time to subject usually, and can flash memory multiple apart from the picture taken in the current nearer time period.When user presses shutter key, the picture that the pictures taken that mobile terminal finally the obtains moment that normally distance users trips key takes recently.
Find in practice, if mobile terminal has occurred shake in the moment of pressing shutter key, the pictures taken that finally obtains will be caused fuzzyyer.Visible, in shooting process, how ensureing that the picture clarity of taking is higher becomes problem demanding prompt solution.
Summary of the invention
The embodiment of the invention discloses a kind of picture shooting method and mobile terminal, can ensure that the picture clarity of taking is higher, improve picture shooting quality.
Embodiment of the present invention first aspect discloses a kind of picture shooting method, comprising:
According to preset interval time, target subject is taken, obtain photographic images;
When receiving shooting instruction, obtain multiple photographic images of shooting in preset time period;
Calculate the clear value of often opening photographic images in multiple photographic images described respectively;
Photographic images maximum for clear value in multiple photographic images described is defined as the pictures taken of taking described target subject.
As the optional described mode of one, often open the clear value of photographic images in described calculating respectively multiple photographic images described, comprising:
For often opening photographic images in multiple photographic images described, calculate the GTG difference of each adjacent two pixels in this photographic images successively;
Add up the quantity that GTG difference described in this photographic images exceedes adjacent two pixels of preset gray scale threshold value;
Calculate the clear value of this photographic images according to described quantity, wherein, described clear value is directly proportional to described quantity.
As the optional execution mode of another kind, described photographic images maximum for clear value in multiple photographic images described is defined as the pictures taken of taking described target subject, comprises:
The maximum photographic images of clear value is chosen as target photographic images from multiple photographic images described;
Calculate the integrity degree of target subject described in described target photographic images;
Judge whether described integrity degree exceedes default integrity degree threshold value, if so, then described target photographic images is defined as the pictures taken of taking described target subject.
As another optional execution mode, described method also comprises:
When starting camera applications, judge whether mobile terminal remains static or pre-set space attitude;
If described mobile terminal is in described inactive state or described pre-set space attitude, then according to preset interval time, target subject is taken described in performing, obtain the step of photographic images.
As another optional execution mode, described method also comprises:
Judge whether to receive focusing instruction, if so, then respond described focusing instruction, according to default shooting interval, target subject is taken described in performing, obtain the step of photographic images.
Accordingly, embodiment of the present invention second aspect discloses a kind of mobile terminal, comprising:
Shooting unit, for taking target subject according to preset interval time, obtains photographic images;
Acquiring unit, for when receiving shooting instruction, obtains multiple photographic images of shooting in preset time period;
Computing unit, for calculating the clear value of often opening photographic images in multiple photographic images described respectively;
Determining unit, for being defined as the pictures taken of taking described target subject by photographic images maximum for clear value in multiple photographic images described.
As the optional execution mode of one, described computing unit comprises the first computation subunit, statistics subelement and the second computation subunit, wherein:
Described first computation subunit, for for often opening photographic images in multiple photographic images described, calculates the GTG difference of each adjacent two pixels in this photographic images successively;
Described statistics subelement, exceedes the quantity of adjacent two pixels of preset gray scale threshold value for adding up GTG difference described in this photographic images;
Second computation subunit, the described quantity for obtaining according to described statistics subelement calculates the clear value of this photographic images, and wherein, described clear value is directly proportional to described quantity.
As the optional execution mode of another kind, described determining unit comprises to be chosen subelement, the 3rd computation subunit, judgment sub-unit and determines subelement, wherein:
Describedly choose subelement, for choosing the maximum photographic images of clear value as target photographic images from multiple photographic images described;
Described 3rd computation subunit, for calculating the integrity degree of target subject described in described target photographic images;
Described judgment sub-unit, for judging whether described integrity degree exceedes default integrity degree threshold value;
Describedly determine subelement, for when described judgment sub-unit judges that described integrity degree exceedes default integrity degree threshold value, described target photographic images is defined as the pictures taken of taking described target subject.
As another optional execution mode, described mobile terminal also comprises:
First judging unit, for when starting camera applications, judge whether mobile terminal remains static or pre-set space attitude, if described mobile terminal is in described inactive state or described pre-set space attitude, then trigger described in the execution of described shooting unit and according to preset interval time, target subject is taken, obtain the operation of photographic images.
As another optional execution mode, described mobile terminal also comprises:
Second judging unit, receives focusing instruction for judging whether, if so, then responds described focusing instruction, triggers described in the execution of described shooting unit and takes target subject according to default shooting interval, obtain the operation of photographic images.
Implement the embodiment of the present invention, there is following beneficial effect:
In the embodiment of the present invention, mobile terminal, when receiving shooting instruction, will obtain multiple photographic images of shooting in preset time period.And from these multiple photographic images, choose the pictures taken of the maximum photographic images of clear value as photographic subjects subject, even if mobile terminal occurs shake in the shooting moment like this, also can ensure that the picture clarity shot is higher; And obtain the image of shooting moment nearlyer time period shooting, can ensure that the image content finally obtained meets the demand of user.Therefore, this mode can improve picture shooting quality, meets the demand to definition in user's picture shooting, thus promotes Consumer's Experience.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of a kind of picture shooting method disclosed in the embodiment of the present invention;
Fig. 2 is the schematic flow sheet of another kind of picture shooting method disclosed in the embodiment of the present invention;
Fig. 3 is the structural representation of a kind of mobile terminal disclosed in the embodiment of the present invention;
Fig. 4 is the structural representation of another kind of mobile terminal disclosed in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the invention discloses a kind of picture shooting method and mobile terminal, can ensure that the picture clarity of taking is higher, improve picture shooting quality.Below be described in detail respectively.
Refer to Fig. 1, Fig. 1 is the schematic flow sheet of a kind of picture shooting method disclosed in the embodiment of the present invention.Wherein, method shown in Fig. 1 can be applied to smart mobile phone (as Android phone, iOS mobile phone etc.), panel computer, palmtop PC and mobile internet device (MobileInternetDevices, MID), the mobile terminal such as personal digital assistant (Personal Digital Assistant, PDA), media player, intelligent television, intelligent watch, intelligent glasses, Intelligent bracelet.As shown in Figure 1, this picture shooting method can comprise the following steps:
S101, mobile terminal are taken target subject according to preset interval time, obtain photographic images.
In the embodiment of the present invention, mobile terminal is after startup camera applications, and backstage can catch the preview screen got according to preset interval time.Wherein, this preset interval time can be several milliseconds, and can be also zero point several milliseconds etc., the embodiment of the present invention limit.This target subject can be personage, animal, building, scenery with hills and waters, handicraft etc., and the embodiment of the present invention does not limit.
Under normal circumstances, mobile terminal will be taken the picture that it collects every preset interval time, thus obtains photographic images, and this mobile terminal of the photographic images obtained generally can be kept in background data base, to sightless during user.Further, mobile terminal preserves the photographic images of captured in real-time can be preserve as the form of storehouse.Can be understood as:, after the photographic images quantity of preserving in storehouse reaches the stored number of this storehouse, this mobile terminal will be deleted the photographic images that preserve at first, namely the rule of first-in first-out in database.
For example, suppose in mobile terminal background data base, to preserve 4 photographic images, after the preset interval time of interval, this mobile terminal is taken again and is obtained a photographic images, at this moment, the photographic images preserved at first will be rejected by this mobile terminal from its background data base, is then saved to just taking the photographic images obtained in its background data base.
S102, when receiving shooting instruction, multiple photographic images of shooting in this acquisition for mobile terminal preset time period.
In the embodiment of the present invention, mobile terminal constantly can be taken the subject in camera angular field of view according to preset interval time, and can constantly upgrade the photographic images preserved in its background data base.Therefore, after user presses shutter key, this mobile terminal according to the operation of user, will generate shooting instruction, takes to trigger camera.
Under normal circumstances, mobile terminal, after receiving shooting instruction, will obtain distance and receive shooting instruction nearest moment and take the photographic images obtained from database.And in embodiments of the present invention, after mobile terminal receives shooting instruction, multiple photographic images will be obtained from its background data base.Wherein, these multiple photographic images are the moment receiving shooting instruction is benchmark, takes the photographic images obtained in the preset time period before this moment.That is, these multiple photographic images are that distance users is pressed the shutter key nearer moment and taken the photographic images obtained.
Further, after getting multiple photographic images, this mobile terminal can screen first to these multiple photographic images.As, first filter out obviously fuzzy photographic images, and then clear value is calculated to remaining photographic images after screening; And for example, first filter out the photographic images that subject integrity degree is less, and then calculate its clear value etc. to remaining photographic images after screening, the embodiment of the present invention does not limit.
Wherein, this preset time period can be 2 seconds, 1 second, 0.1 second etc., and the invention process does not limit.And the quantity of the photographic images of acquisition for mobile terminal can be 3, also can be 4, can also be 6 etc., the embodiment of the present invention does not limit.
S103, this mobile terminal calculate the clear value of often opening photographic images in these multiple photographic images respectively.
In the embodiment of the present invention, if picture is fuzzyyer, luminance difference between most of neighbor pixel in its picture is just smaller, on the contrary, if the luminance difference between adjacent two pixels is larger, just illustrate that between these two pixels, contrast is higher, therefore, the picture that two pixel presents will be more clear.So if in a pictures, the luminance difference existed between a large amount of neighbor pixels is less, just illustrate that this picture clarity is lower.
Therefore, after acquisition for mobile terminal to multiple photographic images, this mobile terminal will calculate the clear value of each photographic images respectively according to the luminance difference of adjacent two pixels.It should be noted that, the brightness of pixel is generally weighed by the grey decision-making of pixel or shade of gray, if grey decision-making or shade of gray higher, just show that the brightness of this pixel is larger.
As a kind of feasible execution mode, the concrete mode that this mobile terminal calculates the clear value of often opening photographic images in these multiple photographic images respectively can comprise the following steps:
Step 11) for often opening photographic images in these multiple photographic images, calculate the GTG difference of each adjacent two pixels in this photographic images successively.
In specific implementation, after acquisition for mobile terminal to multiple photographic images, this mobile terminal will calculate the clear value of often opening photographic images.That is, first this mobile terminal first can obtain the grey decision-making (also can obtain its shade of gray) of each pixel in photographic images, and then calculate the difference of grey decision-making between each adjacent two pixels in this photographic images successively, obtain GTG difference.
For example, suppose to there are 9 pixels in a photographic images, and these 9 pixels are in square arrangement.When acquisition for mobile terminal to each pixel grey decision-making after, combination of two will be carried out to these 9 pixels, obtain multiple adjacent two pixels combination, thus adjacent two pixels obtained have 12 kinds of combinations.Therefore, this mobile terminal will calculate the difference of the grey decision-making of adjacent two pixels of often kind of combination in these 12 kinds combinations, i.e. GTG difference.
Step 12) add up the quantity that this GTG difference in this photographic images exceedes adjacent two pixels of preset gray scale threshold value.
In specific implementation, after mobile terminal calculates the GTG difference of each adjacent two pixels successively, for each GTG difference, will judge whether it exceedes preset gray scale threshold value.Wherein, this preset gray scale threshold value can be 50, and can be also 70, the embodiment of the present invention limit.
In addition, when the GTG difference that mobile terminal is judged in a certain photographic images often between adjacent two pixels exceedes preset gray scale threshold value, counter corresponding for this photographic images will be added 1, thus can count in this photographic images, GTG difference exceedes the quantity of adjacent two pixels of preset gray scale threshold value.By same mode, this mobile terminal just can count the quantity that the GTG difference of often opening photographic images in these multiple photographic images exceedes adjacent two pixels of preset gray scale threshold value respectively.
Step 13) the clear value of this photographic images is calculated according to this quantity, wherein, this clear value is directly proportional to this quantity.
It should be noted that, the clear value in the embodiment of the present invention can be the numerical value characterizing this photographic images definition height, and namely characterize the numerical value of this photographic images definition size, the embodiment of the present invention does not limit.
In specific implementation, in same photographic images, the quantity of adjacent two pixels that its GTG difference exceedes preset gray scale threshold value is directly proportional to the clear value of this photographic images.So, when counting GTG difference and exceeding the quantity of adjacent two pixels of preset gray scale threshold value, just can exceed clear value corresponding to the quantity of adjacent two pixels of preset gray scale threshold value from the quantity preset and the GTG difference of searching this photographic images the corresponding relation of clear value, thus obtain the clear value of this photographic images; Can also be obtain the coefficient between quantity that clear value and GTG difference exceed preset gray scale threshold value, then the quantity exceeding preset gray scale threshold value according to GTG difference in this coefficient and this photographic images calculates the clear value of this photographic images, and the embodiment of the present invention does not limit.
That is, for same photographic images, if in its pixel GTG difference to exceed the quantity of adjacent two pixels of preset gray scale threshold value larger, so the clear value of this photographic images is also larger, and the definition of this photographic images is also higher.
Photographic images maximum for clear value in these multiple photographic images is defined as the pictures taken of taking this target subject by S104, this mobile terminal.
In the embodiment of the present invention, after mobile terminal calculates the clear value of often opening photographic images in these multiple photographic images respectively, this mobile terminal can compare the clear value of these multiple photographic images, the photographic images that in then choosing, clear value is maximum.Therefore, will using the pictures taken of photographic images maximum for clear value as this target subject of shooting.
Further, after mobile terminal determines the pictures taken of this target subject of shooting, the photographic images preserved will be deleted in its background data base.
For example, after startup camera applications, mobile terminal will gather the image of preview screen according to the time interval of 0.01ms by camera, suppose that user needs to take a beauty, so, after camera aims at this beauty, this mobile terminal will be taken this beauty with the time interval of 0.01ms, thus obtains multiple photographic images.And then preserve according to the sequencing of shooting time the photographic images taken in 1s.And after user presses shutter key, this mobile terminal will receive the shooting instruction that user takes this beauty, thus this shooting instruction can be responded, obtain from the background data base of mobile terminal shooting time distance users press shutter key time be engraved in all photographic images in 0.5ms, and calculate the clear value of these photographic images.Suppose that the clear value pressing the photographic images of moment place's shooting of the 0.03ms in the moment of shutter key in distance users is maximum, so this mobile terminal using the pictures taken of this photographic images as this beauty of shooting, finally will be kept in the picture library of mobile terminal.When user checks picture in picture library, just this photographic images can be viewed.
Visible, in the picture shooting method described by Fig. 1, mobile terminal, when receiving shooting instruction, will obtain multiple photographic images of shooting in preset time period.And from these multiple photographic images, choose the pictures taken of the maximum photographic images of clear value as photographic subjects subject, even if mobile terminal occurs shake in the shooting moment like this, also can ensure that the picture clarity shot is higher; And obtain the image of shooting moment nearlyer time period shooting, can ensure that the image content finally obtained meets the demand of user.Therefore, this mode can improve picture shooting quality, meets the demand to definition in user's picture shooting, thus promotes Consumer's Experience.
Refer to Fig. 2, Fig. 2 is the schematic flow sheet of another kind of picture shooting method disclosed in the embodiment of the present invention.Wherein, the method shown in Fig. 2 can be applied to the mobile terminal such as smart mobile phone (as Android phone, iOS mobile phone etc.), panel computer, palmtop PC and mobile internet device, personal digital assistant, media player, intelligent television, intelligent watch, intelligent glasses, Intelligent bracelet.As shown in Figure 2, this picture shooting method can comprise the following steps:
S201, when start camera applications time, mobile terminal judges whether this mobile terminal remains static or pre-set space attitude, if so, perform step S202; If not, process ends.
In the embodiment of the present invention, user, before needs are taken certain subject, mobile terminal generally can be kept motionless, and camera aims at this subject.So after mobile terminal starts camera applications, and when judging that this mobile terminal remains static, just can judge that user needs to take the subject in preview screen.Therefore, this mobile terminal will start backstage and dodge bat pattern, takes, thus obtains multiple photographic images, and be stored in the background data base of mobile terminal in its system background according to preset interval time to this subject.
In addition, if user takes certain subject at needs, generally this mobile terminal can be kept a distinctive spatial attitude, as horizontal screen, or perpendicular screen etc.Suppose to show that user has the demand of shooting when horizontal for mobile terminal screen is placed by user, so this mobile terminal is when detecting that it is in horizontal screen state, backstage will be started and dodge bat pattern, this subject is taken according to preset interval time in its system background, thus obtain multiple photographic images, and be stored in the background data base of mobile terminal.Wherein, pre-set space attitude can be horizontal screen, and also can be perpendicular screen, can also be oblique screen, and its pre-set space attitude can set according to the shooting custom of user, and the embodiment of the present invention does not limit.
It should be noted that, the mode that mobile terminal detects spatial attitude residing for it can be detect according to the gravity sensor of mobile terminal, as detect the gravity sensor of mobile terminal which side of force direction perpendicular to these mobile terminal six sides, gravity sensor the angle of which side of force direction and this mobile terminal six sides less.When supposing the side of force direction perpendicular to mobile terminal sound input unit side, just show that this mobile terminal is in perpendicular screen state.Simultaneously, the mode that mobile terminal detects spatial attitude residing for it can also be the spatial attitude determining residing for this mobile terminal by four gravity checkout gears, as centered by mobile terminal center, its four direction is respectively arranged with a gravity checkout gear, when the spatial attitude of mobile terminal changes, the gravity checkout gear of its four direction can detect distance overhead, the overhead nearest direction residing for gravity checkout gear is the placement direction of this mobile terminal, and the embodiment of the present invention does not limit.
As a kind of feasible execution mode, after startup camera applications, this mobile terminal also can judge whether to receive focusing instruction, if received, just take needing the target subject of focusing according to preset interval time further, obtaining photographic images.
Concrete, when user needs to take certain subject, the subject in preview screen can be clicked on the screen of the mobile terminal.When judging that this mobile terminal is by when to receive operation transformation be the focusing instruction for this subject, this mobile terminal will respond this focusing instruction, this subject is focused, and according to preset interval time, this subject is taken, obtain photographic images.
That is, when mobile terminal is when performing focus operation, can show that user has the demand of shooting, at this moment just triggering mobile terminals execution according to preset interval time, target subject can be taken, obtaining the step of photographic images.
Further, mobile terminal can also when judging that it remains static with pre-set space attitude simultaneously, then perform and take target subject according to preset interval time, obtains the step of photographic images.And when mobile terminal judges that it neither remains static, when not being in again pre-set space attitude, this mobile terminal can not perform to be taken target subject according to preset interval time, obtains the step of photographic images.
Above-mentioned two kinds of triggering mobile terminals are taken target subject according to preset interval time, obtain the mode of photographic images, mobile terminal not only can be avoided to perform unnecessary shooting operation when not taking demand, reduce system resources consumption, the power consumption of mobile terminal can also be saved, the backstage of mobile terminal is taken more intelligent, promote Consumer's Experience.
S202, this mobile terminal are taken target subject according to preset interval time, obtain photographic images.
S203, when receiving shooting instruction, multiple photographic images of shooting in this acquisition for mobile terminal preset time period.
S204, this mobile terminal calculate the clear value of often opening photographic images in these multiple photographic images respectively.
S205, this mobile terminal choose the maximum photographic images of clear value as target photographic images from these multiple photographic images.
In the embodiment of the present invention, after mobile terminal calculates the clear value of often opening photographic images in these multiple photographic images respectively, this mobile terminal can compare the clear value of these multiple photographic images, then the photographic images that in choosing, clear value is maximum, and using this photographic images as target photographic images.
S206, this mobile terminal calculate the integrity degree of this target subject in this target photographic images.
In the embodiment of the present invention, because this mobile terminal is mainly taken target subject, so, after mobile terminal to be pressed from user the photographic images got in the preset time period of shutter key and is selected the maximum target photographic images of clear value, in order to guarantee that this target photographic images more completely shoots target subject, this mobile terminal will calculate the integrity degree of target subject in this target photographic images further.
Concrete, this mobile terminal calculates the integrity degree of target subject in target photographic images, can be calculate according to symmetry principle.Such as, when supposing to identify target subject for personage's head portrait from this target photographic images, can determine that whether this personage's head portrait is complete according to the symmetry of right and left eyes, left-right ear in personage's head portrait, and then the integrity degree of this personage's head portrait can be calculated.
Concrete, this mobile terminal calculates the integrity degree of target subject in target photographic images, can also calculate according to supplementing principle.Such as, suppose that the overwhelming majority of a building is all presented in this target photographic images, so this mobile terminal just can according to this building present part feature the part that this building does not present is supplemented complete, if need supplementary content more, just illustrate that the integrity degree of this building in this target image is lower; And if the content that needs supplement is less, just illustrate that the integrity degree of this building in this target image is higher.Therefore, this mobile terminal just can by supplementing the integrity degree calculating this target subject in target photographic images to target subject.
S207, this mobile terminal judge whether this integrity degree exceedes default integrity degree threshold value, if so, then this target photographic images are defined as the pictures taken of taking this target subject.
In the embodiment of the present invention, after calculating the integrity degree that in this target photographic images, target subject presents, this mobile terminal will judge whether this integrity degree exceedes default integrity degree threshold value further, if exceeded, just this target photographic images is defined as the pictures taken of taking this target subject, and be kept in the picture library of mobile terminal, when user checks picture library, this target photographic images just can be viewed.And if this integrity degree does not exceed this default integrity degree threshold value, this mobile terminal just can choose integrity degree and the relatively high photographic images of clear value from these multiple photographic images, using the pictures taken as this target subject of shooting.
Concrete, when in this target photographic images, the integrity degree of target subject does not exceed default integrity degree threshold value, it is higher that this mobile terminal can choose integrity degree from these multiple photographic images, and the larger photographic images of clear value is using the pictures taken as this target subject of shooting.And if the integrity degree of this target subject is all less than the integrity degree of this target subject in this target photographic images in these multiple photographic images, so this mobile terminal just can directly using the pictures taken of this target photographic images as this target subject of shooting.
Visible, in the method described by Fig. 2, mobile terminal is when receiving focusing instruction, or judge this mobile terminal remain static or pre-set space attitude time, just according to preset interval time, target subject is taken, can avoid mobile terminal like this after user's error starting camera applications, perform unnecessary shooting operation on backstage always, can system resources consumption be reduced.Simultaneously, mobile terminal is after choosing the maximum photographic images of clear value, the integrity degree of further this photographic images of judgement, like this can under the prerequisite shooting target subject comparatively clearly, ensure that target subject present position in pictures taken is comparatively suitable, as placed in the middle in this target subject and to be completely presented in pictures taken.Situation so mainly in order to avoid causing target subject to be shifted in photographic images in shooting process due to the shake of mobile terminal occurs, thus can when improving the definition of pictures taken, improve the integrity degree of pictures taken, promote Consumer's Experience.
Refer to Fig. 3, Fig. 3 is the structural representation of a kind of mobile terminal disclosed in the embodiment of the present invention.Wherein, the mobile terminal 300 shown in Fig. 3 can include but not limited to smart mobile phone (as Android phone, iOS mobile phone etc.), panel computer, palmtop PC and mobile internet device, personal digital assistant, media player, intelligent television, intelligent watch, intelligent glasses, Intelligent bracelet etc.As shown in Figure 3, this mobile terminal 300 can comprise with lower unit:
Shooting unit 301, for taking target subject according to preset interval time, obtains photographic images.
In the embodiment of the present invention, shooting unit 301 is after startup camera applications, and backstage can catch the preview screen got according to preset interval time.Wherein, this preset interval time can be several milliseconds, and can be also zero point several milliseconds etc., the embodiment of the present invention limit.This target subject can be personage, animal, building, scenery with hills and waters, handicraft etc., and the embodiment of the present invention does not limit.
Under normal circumstances, shooting unit 301 will be taken the picture that it collects every preset interval time, thus obtain photographic images, and this mobile terminal 300 of the photographic images obtained generally can be kept in background data base, to sightless during user.Further, mobile terminal 300 preserves the photographic images of captured in real-time can be preserve as the form of storehouse.Can be understood as:, after the photographic images quantity of preserving in storehouse reaches the stored number of this storehouse, this mobile terminal 300 will be deleted the photographic images that preserve at first, namely the rule of first-in first-out in database.
For example, suppose can only preserve 4 photographic images in mobile terminal 300 background data base, after the preset interval time of interval, shooting unit 301 is taken again and is obtained a photographic images, at this moment, the photographic images preserved at first will be rejected by this mobile terminal 300 from its background data base, is then saved to just taking the photographic images obtained in its background data base.
Acquiring unit 302, for when receiving shooting instruction, obtains multiple photographic images of shooting in preset time period.
In the embodiment of the present invention, shooting unit 301 constantly can be taken the subject in camera angular field of view according to preset interval time, and can constantly upgrade the photographic images preserved in its background data base.Therefore, after user presses shutter key, this mobile terminal 300 according to the operation of user, will generate shooting instruction, takes to trigger camera.
Under normal circumstances, acquiring unit 302, after mobile terminal 300 receives shooting instruction, will obtain distance and receive shooting instruction nearest moment and take the photographic images obtained from database.And in embodiments of the present invention, after mobile terminal 300 receives shooting instruction, acquiring unit 302 will obtain multiple photographic images from its background data base.Wherein, these multiple photographic images are the moment receiving shooting instruction is benchmark, takes the photographic images obtained in the preset time period before this moment.That is, these multiple photographic images are that distance users is pressed the shutter key nearer moment and taken the photographic images obtained.
Further, after acquiring unit 302 gets multiple photographic images, this mobile terminal 300 can screen first to these multiple photographic images.As, first filter out obviously fuzzy photographic images, and then clear value is calculated to remaining photographic images after screening; And for example, first filter out the photographic images that subject integrity degree is less, and then calculate its clear value etc. to remaining photographic images after screening, the embodiment of the present invention does not limit.
Wherein, this preset time period can be 2 seconds, 1 second, 0.1 second etc., and the invention process does not limit.And the quantity of photographic images that acquiring unit 302 obtains can be 3, also can be 4, can also be 6 etc., the embodiment of the present invention does not limit.
Computing unit 303, for calculating the clear value of often opening photographic images in these multiple photographic images that above-mentioned acquiring unit 302 gets respectively.
In the embodiment of the present invention, if picture is fuzzyyer, luminance difference between most of neighbor pixel in its picture is just smaller, on the contrary, if the luminance difference between adjacent two pixels is larger, just illustrate that between these two pixels, contrast is higher, therefore, the picture that two pixel presents will be more clear.So if in a pictures, the luminance difference existed between a large amount of neighbor pixels is less, just illustrate that this picture clarity is lower.
Therefore, after acquiring unit 302 gets multiple photographic images, computing unit 303 will calculate the clear value of each photographic images respectively according to the luminance difference of adjacent two pixels.It should be noted that, the brightness of pixel is generally weighed by the grey decision-making of pixel or shade of gray, if grey decision-making or shade of gray higher, just show that the brightness of this pixel is larger.
Determining unit 304, for being defined as the pictures taken of taking this target subject by photographic images maximum for clear value in these multiple photographic images.
In the embodiment of the present invention, after computing unit 303 calculates the clear value of often opening photographic images in these multiple photographic images respectively, determining unit 304 can compare the clear value of these multiple photographic images, the photographic images that in then choosing, clear value is maximum.Therefore, will using the pictures taken of photographic images maximum for clear value as this target subject of shooting.
Further, after determining unit 304 determines the pictures taken of this target subject of shooting, the photographic images preserved in its background data base will be deleted by this mobile terminal 300.
For example, after startup camera applications, shooting unit 301 will gather the image of preview screen according to the time interval of 0.01ms by camera, suppose that user needs to take a beauty, so, after camera aims at this beauty, shooting unit 301 will be taken this beauty with the time interval of 0.01ms, thus obtains multiple photographic images.And then preserve according to the sequencing of shooting time the photographic images taken in 1s.And after user presses shutter key, this mobile terminal 300 will receive the shooting instruction that user takes this beauty, acquiring unit 302 thus this shooting instruction can be responded, obtain from the background data base of mobile terminal 300 shooting time distance users press shutter key time be engraved in all photographic images in 0.5ms, computing unit 303 also calculates the clear value of these photographic images.Suppose that the clear value pressing the photographic images of moment place's shooting of the 0.03ms in the moment of shutter key in distance users is maximum, so determining unit 304 using the pictures taken of this photographic images as this beauty of shooting, finally will be kept in the picture library of mobile terminal 300.When user checks picture in picture library, just this photographic images can be viewed.
Visible, in the mobile terminal described by Fig. 3, mobile terminal, when receiving shooting instruction, will obtain multiple photographic images of shooting in preset time period.And from these multiple photographic images, choose the pictures taken of the maximum photographic images of clear value as photographic subjects subject, even if mobile terminal occurs shake in the shooting moment like this, also can ensure that the picture clarity shot is higher; And obtain the image of shooting moment nearlyer time period shooting, can ensure that the image content finally obtained meets the demand of user.Therefore, this mode can improve picture shooting quality, meets the demand to definition in user's picture shooting, thus promotes Consumer's Experience.
Refer to Fig. 4, Fig. 4 is the structural representation of another kind of mobile terminal disclosed in the embodiment of the present invention.Wherein, the mobile terminal 300 shown in Fig. 4 is optimized to obtain on the basis of the mobile terminal 300 shown in Fig. 3.As shown in Figure 4, this mobile terminal 300 can also comprise with lower unit:
First judging unit 305, for when starting camera applications, judge whether mobile terminal 300 remains static or pre-set space attitude, if this mobile terminal 300 remains static or pre-set space attitude, then triggering shooting unit 301 performs and takes target subject according to preset interval time, obtains the operation of photographic images.
In the embodiment of the present invention, user, before needs are taken certain subject, mobile terminal 300 generally can be kept motionless, and camera aims at this subject.So after mobile terminal 300 starts camera applications, and when the first judging unit 305 judges that this mobile terminal 300 remains static, just can judge that user needs to take the subject in preview screen.Therefore, shooting unit 301 will start backstage and dodge bat pattern, takes, thus obtains multiple photographic images, and be stored in the background data base of mobile terminal 300 in its system background according to preset interval time to this subject.
In addition, if user takes certain subject at needs, generally this mobile terminal 300 can be kept a distinctive spatial attitude, as horizontal screen, or perpendicular screen etc.Suppose to show that user has the demand of shooting when horizontal for mobile terminal 300 screen is placed by user, so the first judging unit 305 is when detecting that it is in horizontal screen state, shooting unit 301 will start backstage and dodge bat pattern, this subject is taken according to preset interval time in its system background, thus obtain multiple photographic images, and be stored in the background data base of mobile terminal 300.Wherein, pre-set space attitude can be horizontal screen, and also can be perpendicular screen, can also be oblique screen, and its pre-set space attitude can set according to the shooting custom of user, and the embodiment of the present invention does not limit.
It should be noted that, the mode that first judging unit 305 detects spatial attitude residing for mobile terminal 300 can be detect according to the gravity sensor of mobile terminal 300, as detect the gravity sensor of mobile terminal 300 which side of force direction perpendicular to these mobile terminal 300 6 sides, gravity sensor the angle of which side of force direction and this mobile terminal 300 6 sides less.When supposing the side of force direction perpendicular to mobile terminal 300 speech input device side, just show that this mobile terminal 300 is in perpendicular screen state.Simultaneously, the mode that first judging unit 305 detects spatial attitude residing for it can also be the spatial attitude determining residing for this mobile terminal 300 by four gravity checkout gears, as centered by mobile terminal 300 center, its four direction is respectively arranged with a gravity checkout gear, when the spatial attitude of mobile terminal 300 changes, the gravity checkout gear of its four direction can detect distance overhead, the overhead nearest direction residing for gravity checkout gear is the placement direction of this mobile terminal 300, and the embodiment of the present invention does not limit.
Second judging unit 306, receives focusing instruction for judging whether, if received, triggering shooting unit 301 performs to be taken target subject according to preset interval time, obtains the operation of photographic images.
In the embodiment of the present invention, when user needs to take certain subject, the subject that can click on the screen of mobile terminal 300 in preview screen.When the second judging unit 306 judges that mobile terminal 300 is by when to receive operation transformation be the focusing instruction for this subject, this mobile terminal 300 will respond this focusing instruction, this subject is focused, and according to preset interval time, this subject is taken, obtain photographic images.
That is, when mobile terminal 300 is when performing focus operation, can show that user has the demand of shooting, at this moment just can trigger shooting unit 301 and performing and according to preset interval time, target subject is taken, obtaining the operation of photographic images.
Further, mobile terminal 300 can also when judging that it remains static with pre-set space attitude simultaneously, then perform and take target subject according to preset interval time, obtains the step of photographic images.And when mobile terminal 300 judges that it neither remains static, when not being in again pre-set space attitude, shooting unit 301 would not perform to be taken target subject according to preset interval time, obtain the operation of photographic images.
Above-mentioned two kinds of triggering shooting unit 301 are taken target subject according to preset interval time, obtain the mode of photographic images, mobile terminal 300 not only can be avoided to perform unnecessary shooting operation when not taking demand, reduce system resources consumption, the power consumption of mobile terminal 300 can also be saved, the backstage of mobile terminal 300 is taken more intelligent, promote Consumer's Experience.
In the embodiment of the present invention, above-mentioned computing unit 303 can comprise the first computation subunit 3031, statistics subelement 3032 and the second computation subunit 3033, wherein:
First computation subunit 3031, for for often opening photographic images in these multiple photographic images, calculates the GTG difference of each adjacent two pixels in this photographic images successively.
In specific implementation, after acquiring unit 302 gets multiple photographic images, the first computation subunit 3031 will calculate the clear value of often opening photographic images.That is, first first computation subunit 3031 first can obtain the grey decision-making (also can obtain its shade of gray) of each pixel in photographic images, and then calculate the difference of grey decision-making between each adjacent two pixels in this photographic images successively, obtain GTG difference.
For example, suppose to there are 9 pixels in a photographic images, and these 9 pixels are in square arrangement.After acquiring unit 302 gets the grey decision-making of each pixel, combination of two will be carried out to these 9 pixels, obtain multiple adjacent two pixels combination, thus adjacent two pixels obtained have 12 kinds of combinations.Therefore, the first computation subunit 3031 will calculate the difference of the grey decision-making of adjacent two pixels of often kind of combination in these 12 kinds combinations, i.e. GTG difference.
Statistics subelement 3032, exceedes the quantity of adjacent two pixels of preset gray scale threshold value for adding up this GTG difference in this photographic images.
In specific implementation, after the first computation subunit 3031 calculates the GTG difference of each adjacent two pixels successively, statistics subelement 3032 for each GTG difference, will judge whether it exceedes preset gray scale threshold value.Wherein, this preset gray scale threshold value can be 50, and can be also 70, the embodiment of the present invention limit.
In addition, when judging that the GTG difference in a certain photographic images often between adjacent two pixels exceedes preset gray scale threshold value, counter corresponding for this photographic images will be added 1 by statistics subelement 3032, thus can count in this photographic images, GTG difference exceedes the quantity of adjacent two pixels of preset gray scale threshold value.By same mode, statistics subelement 3032 just can count the quantity that the GTG difference of often opening photographic images in these multiple photographic images exceedes adjacent two pixels of preset gray scale threshold value respectively.
Second computation subunit 3033, for calculating the clear value of this photographic images according to this quantity, wherein, this clear value is directly proportional to this quantity.
It should be noted that, the clear value in the embodiment of the present invention can be the numerical value characterizing this photographic images definition height, and namely characterize the numerical value of this photographic images definition size, the embodiment of the present invention does not limit.
In specific implementation, in same photographic images, the quantity of adjacent two pixels that its GTG difference exceedes preset gray scale threshold value is directly proportional to the clear value of this photographic images.So, when add up subelement 3032 count GTG difference exceed the quantity of adjacent two pixels of preset gray scale threshold value time, second computation subunit 3033 just can exceed clear value corresponding to the quantity of adjacent two pixels of preset gray scale threshold value from the quantity preset and the GTG difference of searching this photographic images the corresponding relation of clear value, thus obtains the clear value of this photographic images; Can also be obtain the coefficient between quantity that clear value and GTG difference exceed preset gray scale threshold value, then the quantity exceeding preset gray scale threshold value according to GTG difference in this coefficient and this photographic images calculates the clear value of this photographic images, and the embodiment of the present invention does not limit.
That is, for same photographic images, if in its pixel GTG difference to exceed the quantity of adjacent two pixels of preset gray scale threshold value larger, so the clear value of this photographic images is also larger, and the definition of this photographic images is also higher.
In the embodiment of the present invention, above-mentioned determining unit 304 can comprise to be chosen subelement 3041, the 3rd computation subunit 3042, judgment sub-unit 3043 and determines subelement 3044, wherein:
Choose subelement 3041, for choosing the maximum photographic images of clear value as target photographic images from these multiple photographic images.
In the embodiment of the present invention, after computing unit 303 calculates the clear value of often opening photographic images in these multiple photographic images respectively, choose subelement 3041 to compare the clear value of these multiple photographic images, then the photographic images that in choosing, clear value is maximum, and using this photographic images as target photographic images.
3rd computation subunit 3042, for calculating the above-mentioned integrity degree choosing this target subject in the target photographic images that subelement 3041 chooses.
In the embodiment of the present invention, because this mobile terminal 300 is mainly taken target subject, so, after choosing subelement 3041 and pressing from user the photographic images got in the preset time period of shutter key and select the maximum target photographic images of clear value, in order to guarantee that this target photographic images more completely shoots target subject, the 3rd computation subunit 3042 will calculate the integrity degree of target subject in this target photographic images further.
Concrete, the 3rd computation subunit 3042 calculates the integrity degree of target subject in target photographic images, can be to calculate according to symmetry principle.Such as, when supposing to identify target subject for personage's head portrait from this target photographic images, can determine that whether this personage's head portrait is complete according to the symmetry of right and left eyes, left-right ear in personage's head portrait, and then the integrity degree of this personage's head portrait can be calculated.
Concrete, the 3rd computation subunit 3042 calculates the integrity degree of target subject in target photographic images, can also calculate according to supplementing principle.Such as, suppose that the overwhelming majority of a building is all presented in this target photographic images, so the 3rd computation subunit 3042 just can according to this building present part feature the part that this building does not present is supplemented complete, if need supplementary content more, just illustrate that the integrity degree of this building in this target image is lower; And if the content that needs supplement is less, just illustrate that the integrity degree of this building in this target image is higher.Therefore, the 3rd computation subunit 3042 just can by supplementing the integrity degree calculating this target subject in target photographic images to target subject.
Judgment sub-unit 3043, for judging whether the integrity degree that above-mentioned 3rd computation subunit 3042 calculates exceedes default integrity degree threshold value.
Determine subelement 3044, for when above-mentioned judgment sub-unit 3043 judges that this integrity degree exceedes default integrity degree threshold value, this target photographic images is defined as the pictures taken of taking this target subject.
In specific implementation, after the 3rd computation subunit 3042 calculates the integrity degree that in this target photographic images, target subject presents, judgment sub-unit 3043 will judge whether this integrity degree exceedes default integrity degree threshold value further, if exceeded, determine that this target photographic images is just defined as taking the pictures taken of this target subject by subelement 3044, and be kept in the picture library of mobile terminal 300, when user checks picture library, this target photographic images just can be viewed.And if this integrity degree does not exceed this default integrity degree threshold value, this mobile terminal 300 just can choose integrity degree and the relatively high photographic images of clear value from these multiple photographic images, using the pictures taken as this target subject of shooting.
Concrete, when in this target photographic images, the integrity degree of target subject does not exceed default integrity degree threshold value, it is higher that this mobile terminal 300 can choose integrity degree from these multiple photographic images, and the larger photographic images of clear value is using the pictures taken as this target subject of shooting.And if the integrity degree of this target subject is all less than the integrity degree of this target subject in this target photographic images in these multiple photographic images, so determine that subelement 3044 just can directly using the pictures taken of this target photographic images as this target subject of shooting.
Visible, in the method described by Fig. 2, mobile terminal is when receiving focusing instruction, or judge this mobile terminal remain static or pre-set space attitude time, just according to preset interval time, target subject is taken, can avoid mobile terminal like this after user's error starting camera applications, perform unnecessary shooting operation on backstage always, can system resources consumption be reduced.Simultaneously, mobile terminal is after choosing the maximum photographic images of clear value, the integrity degree of further this photographic images of judgement, like this can under the prerequisite shooting target subject comparatively clearly, ensure that target subject present position in pictures taken is comparatively suitable, as placed in the middle in this target subject and to be completely presented in pictures taken.Situation so mainly in order to avoid causing target subject to be shifted in photographic images in shooting process due to the shake of mobile terminal occurs, thus can when improving the definition of pictures taken, improve the integrity degree of pictures taken, promote Consumer's Experience.
One of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, described program can be stored in a computer read/write memory medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
Above disclosedly be only present pre-ferred embodiments, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the claims in the present invention are done, still belong to the scope that the present invention is contained.
Claims (10)
1. a picture shooting method, is characterized in that, comprising:
According to preset interval time, target subject is taken, obtain photographic images;
When receiving shooting instruction, obtain multiple photographic images of shooting in preset time period;
Calculate the clear value of often opening photographic images in multiple photographic images described respectively;
Photographic images maximum for clear value in multiple photographic images described is defined as the pictures taken of taking described target subject.
2. method according to claim 1, is characterized in that, often opens the clear value of photographic images, comprising in described calculating respectively multiple photographic images described:
For often opening photographic images in multiple photographic images described, calculate the GTG difference of each adjacent two pixels in this photographic images successively;
Add up the quantity that GTG difference described in this photographic images exceedes adjacent two pixels of preset gray scale threshold value;
Calculate the clear value of this photographic images according to described quantity, wherein, described clear value is directly proportional to described quantity.
3. method according to claim 1, is characterized in that, described photographic images maximum for clear value in multiple photographic images described is defined as the pictures taken of taking described target subject, comprising:
The maximum photographic images of clear value is chosen as target photographic images from multiple photographic images described;
Calculate the integrity degree of target subject described in described target photographic images;
Judge whether described integrity degree exceedes default integrity degree threshold value, if so, then described target photographic images is defined as the pictures taken of taking described target subject.
4. the method according to any one of claims 1 to 3, is characterized in that, described method also comprises:
When starting camera applications, judge whether mobile terminal remains static or pre-set space attitude;
If described mobile terminal is in described inactive state or described pre-set space attitude, then according to preset interval time, target subject is taken described in performing, obtain the step of photographic images.
5. the method according to any one of claims 1 to 3, is characterized in that, described method also comprises:
Judge whether to receive focusing instruction, if so, then respond described focusing instruction, according to default shooting interval, target subject is taken described in performing, obtain the step of photographic images.
6. a mobile terminal, is characterized in that, comprising:
Shooting unit, for taking target subject according to preset interval time, obtains photographic images;
Acquiring unit, for when receiving shooting instruction, obtains multiple photographic images of shooting in preset time period;
Computing unit, for calculating the clear value of often opening photographic images in multiple photographic images described respectively;
Determining unit, for being defined as the pictures taken of taking described target subject by photographic images maximum for clear value in multiple photographic images described.
7. mobile terminal according to claim 6, is characterized in that, described computing unit comprises the first computation subunit, statistics subelement and the second computation subunit, wherein:
Described first computation subunit, for for often opening photographic images in multiple photographic images described, calculates the GTG difference of each adjacent two pixels in this photographic images successively;
Described statistics subelement, exceedes the quantity of adjacent two pixels of preset gray scale threshold value for adding up GTG difference described in this photographic images;
Second computation subunit, the described quantity for obtaining according to described statistics subelement calculates the clear value of this photographic images, and wherein, described clear value is directly proportional to described quantity.
8. mobile terminal according to claim 6, is characterized in that, described determining unit comprises to be chosen subelement, the 3rd computation subunit, judgment sub-unit and determines subelement, wherein:
Describedly choose subelement, for choosing the maximum photographic images of clear value as target photographic images from multiple photographic images described;
Described 3rd computation subunit, for calculating the integrity degree of target subject described in described target photographic images;
Described judgment sub-unit, for judging whether described integrity degree exceedes default integrity degree threshold value;
Describedly determine subelement, for when described judgment sub-unit judges that described integrity degree exceedes default integrity degree threshold value, described target photographic images is defined as the pictures taken of taking described target subject.
9. the mobile terminal according to any one of claim 6 ~ 8, is characterized in that, described mobile terminal also comprises:
First judging unit, for when starting camera applications, judge whether mobile terminal remains static or pre-set space attitude, if described mobile terminal is in described inactive state or described pre-set space attitude, then trigger described in the execution of described shooting unit and according to preset interval time, target subject is taken, obtain the operation of photographic images.
10. the mobile terminal according to any one of claim 6 ~ 8, is characterized in that, described mobile terminal also comprises:
Second judging unit, receives focusing instruction for judging whether, if so, then responds described focusing instruction, triggers described in the execution of described shooting unit and takes target subject according to default shooting interval, obtain the operation of photographic images.
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