CN104601890A - Method and device utilizing mobile terminal to shoot figure - Google Patents
Method and device utilizing mobile terminal to shoot figure Download PDFInfo
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- CN104601890A CN104601890A CN201510028775.4A CN201510028775A CN104601890A CN 104601890 A CN104601890 A CN 104601890A CN 201510028775 A CN201510028775 A CN 201510028775A CN 104601890 A CN104601890 A CN 104601890A
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Abstract
The invention discloses a method and device utilizing a mobile terminal to shoot a figure. The method comprises the steps of obtaining a face region central point in a current-frame image of a preview interface of the mobile terminal, determining the golden section ratio of the preview interface, calculating relative position information of the face region central point and the golden section ratio, displaying a first drawing and a second drawing on the screen according to the relative position information to enable the relative positions of the first drawing and the second drawing to simulate the relative positions of the face region central point and the golden section ratio so as to guide a user to move the face towards the golden section ratio according to the displayed relative positions of the first drawing and the second drawing. By means of the method and device utilizing the mobile terminal to shoot the figure, the user can be guided to shoot a special picture with better effect, the face in the shot picture is located nearby the golden section ratio, the aesthetic perception of the shot picture is improved, and the whole picture can be beautiful.
Description
Technical field
The embodiment of the present invention relates to mobile terminal shooting technology field, particularly relates to a kind of method and the device that utilize mobile terminal shooting personage.
Background technology
Universal along with mobile terminal, utilizes mobile terminal to carry out taking pictures and become an important application of mobile terminal, makes domestic consumer need not carry camera in addition again, provide users with the convenient.User's out on tours or mobile terminal on the way can be utilized at any time to carry out souvenir of taking pictures.But most of user is not Professional Photography personnel, when carrying out personage and taking, be no matter autodyne or help people to take pictures just people to be put into screen arsis to be over thing, the photo taken lacks aesthetic feeling.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of method and the device that utilize mobile terminal shooting personage, to promote the aesthetic feeling of taking pictures.
First aspect, embodiments provide a kind of method utilizing mobile terminal to take personage, described method comprises:
Obtain the human face region central point in the current frame image of the preview interface of mobile terminal;
Determine the golden section point of described preview interface;
Calculate the relative position information of described human face region central point and described golden section point;
On screen, the first figure and second graph is shown according to described relative position information, make the relative position of the first figure and second graph simulate the relative position of described human face region central point and described golden section point, according to the first figure of display and the relative position of second graph, face is moved to described golden section point to guide user.
Second aspect, the embodiment of the present invention additionally provides a kind of device utilizing mobile terminal to take personage, and described device comprises:
Acquisition module, for obtaining the human face region central point in the current frame image of the preview interface of mobile terminal;
Determination module, for determining the golden section point of described preview interface;
Computing module, for calculating the relative position information of described human face region central point and described golden section point;
Display module, for showing the first figure and second graph according to described relative position information on screen, make the relative position of the first figure and second graph simulate the relative position of described human face region central point and described golden section point, according to the first figure of display and the relative position of second graph, face is moved to described golden section point to guide user.
What the embodiment of the present invention provided utilizes mobile terminal to take method and the device of personage, by obtaining the human face region central point in the current frame image of the preview interface of mobile terminal, determine the golden section point of described preview interface, calculate the relative position information of described human face region central point and described golden section point, on screen, the first figure and second graph is shown according to described relative position information, the relative position of the first figure and second graph is made to simulate the relative position of described human face region central point and described golden section point, face is moved to described golden section point according to the first figure of display and the relative position of second graph to guide user, thus guide user to take more professional, the photo of better effects if, in the photo taken, face is positioned near golden section point, improve the aesthetic feeling of taking pictures, make photo entirety more graceful.
Accompanying drawing explanation
Fig. 1 is a kind of flow chart utilizing mobile terminal to take the method for personage that the embodiment of the present invention one provides;
Fig. 2 is that the mobile terminal that utilizes that the embodiment of the present invention provides takes the schematic diagram determining the position of second graph according to human face region central point and the relative position information of golden section point and the position of the first figure in the method for personage;
Fig. 3 is a kind of flow chart utilizing mobile terminal to take the method for personage that the embodiment of the present invention two provides;
Fig. 4 is a kind of schematic diagram utilizing mobile terminal to take the device of personage that the embodiment of the present invention three provides.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.Be understandable that, specific embodiment described herein is only for explaining the present invention, but not limitation of the invention.It also should be noted that, for convenience of description, illustrate only part related to the present invention in accompanying drawing but not full content.
Embodiment one
Fig. 1 is a kind of flow chart utilizing mobile terminal to take the method for personage that the embodiment of the present invention one provides, the present embodiment is applicable to amateur shooting personnel and utilizes mobile terminal to shoot the photo of approximate professional results, the method can be performed by mobile terminal, specifically comprises the steps:
Step 110, obtains the human face region central point in the current frame image of the preview interface of mobile terminal.
Mobile terminal catches image by camera, and shows by the preview interface of mobile terminal the current frame image captured, and identifies the face in current frame image, calculates the position coordinates of human face region central point according to the human face data in current frame image.
Preferably, obtain the human face region central point in the current frame image of the preview interface of mobile terminal, comprising:
Utilize face recognition algorithms, identify the face in the current frame image of the preview interface of mobile terminal, obtain human face region data;
According to described human face region data, calculate human face region central point.
Wherein, face recognition algorithms is prior art, such as: the face recognition algorithms that Android platform carries can be utilized in the mobile terminal being provided with android system, the face recognition algorithms that iOS platform carries can be utilized in the mobile terminal being provided with iOS system, face recognition algorithms of the prior art also can be adopted to carry out recognition of face.Mobile terminal utilizes face recognition algorithms according to the face in the face feature recognition image of face, return human face region data, human face region generally represents with rectangle, the human face region data coordinate on four summits of rectangle represents, the coordinate of rectangle diagonal intersection point is obtained, the namely coordinate of human face region central point according to the coordinate on four summits of human face region data and rectangle.
Step 120, determines the golden section point of described preview interface.
Wherein, golden section is a mathematics proportionate relationship, and it is that Ancient Greek Mathematics man has the rule of beautiful value at one that carries out finding in line segment segmentation.Golden section is that one section of line segment is divided into long and short two section, and make segment and the ratio of large section equal the ratio of large section and full section, ratio is 1:1.618, and cut-point is golden section point.
In camera work, general trichotomy composition, by scene two vertical lines and two horizontal line segmentations, obtain four intersection points, these four intersection points are exactly golden section point.When mobile terminal is taken pictures, utilize trichotomy to split the preview interface of mobile terminal and view-finder, obtain four golden section point, obtain the position coordinates of four golden section point according to four positions of golden section point in preview interface.
Preferably, determine the golden section point of described preview interface, comprising:
The wide of described preview interface and height are carried out trisection with two straight lines respectively;
According to the intersection point of four straight lines and the distance of described human face region central point, choose the golden section point of an intersection point as described preview interface.
The wide of described preview interface and height are carried out trisection with two straight lines respectively, obtain four intersection points, the position coordinates of four intersection points is obtained according to four positions of intersection point in preview interface, according to the position coordinates of four intersection points and the position coordinates of human face region central point, calculate the distance of four intersection points and human face region central point respectively, choose the golden section point of an intersection point in four intersection points as described preview interface.
Preferably, according to the intersection point of four straight lines and the distance of described human face region central point, choose an intersection point as the golden section point of described preview interface, comprising:
Choose two intersection points of the upper position being positioned at described preview interface in the intersection point of four straight lines;
Calculate the distance of described two intersection points and described human face region central point respectively;
Choose intersection point less with the distance of described human face region central point in described two intersection points, as the golden section point of described preview interface.
The golden section point chosen is positioned at the top of preview interface, and when making to take pictures, face is positioned at the top position of photo, improves the aesthetic feeling of the photo of shooting further.A selected golden section point, when taking, the golden section point of the first graphic simulation just remains unchanged, user only need move the face or mobile terminal that are taken, make the second graph of simulating human face region central point close to the first figure, and golden section point need not be changed frequently, for user saves the time.
Step 130, calculates the relative position information of described human face region central point and described golden section point.
According to the position coordinates of four golden section point and the position coordinates of human face region central point, calculate the relative position information of described human face region central point and four golden section point respectively, described relative position information comprises the distance of human face region central point and four golden section point, and the line of human face region central point and golden section point is relative to the angle of a certain edges thereof of preview interface.A golden section point less with human face region central point distance in selected four golden section point, and record the relative position information of this golden section point and human face region central point.
Step 140, on screen, the first figure and second graph is shown according to described relative position information, make the relative position of the first figure and second graph simulate the relative position of described human face region central point and described golden section point, according to the first figure of display and the relative position of second graph, face is moved to described golden section point to guide user.
According to the relative position information of human face region central point and golden section point, first figure of mobile terminal display simulation golden section point on screen and the second graph of simulation human face region central point, mobile terminal passes through the relative position simulation golden section point of the first figure and second graph and the relative position of human face region central point, be presented to user with form intuitively, according to the first figure of display and the relative position of second graph, face moved to described golden section point to guide user.The distance of described first figure and described second graph equals the distance of described golden section point and described human face region central point, the position of described first figure might not be the position of golden section point, and the position of described second graph might not be the position of human face region central point.Wherein, the described position of the first figure on screen maintains static, and second graph moves according to human face region central point and moves to identical direction with identical speed, the relative position of real-time Simulation human face region central point and golden section point.
First graphic simulation be the golden section point with human face region central point close together, when user moves mobile terminal or the personage that is taken moves, second graph just moves.When mobile terminal or the amplitude of personage's movement that is taken larger time, human face region central point can depart from golden section point during beginning, near another golden section point, at this moment the first figure can carry out corresponding adjustment to the relative position of second graph, simulation and another golden section point of human face region central point close together and the relative position of human face region central point.
Preferably, the first figure and second graph are centrosymmetric image;
On screen, show the first figure and second graph according to described relative position information, make the relative position of the first figure and second graph simulate the relative position of described human face region central point and described golden section point, comprising:
The first figure is shown at the desired location of screen;
According to the position of described relative position information determination second graph, and the position display second graph determined, the wherein relative position of the central point of the first figure and the central point of second graph is identical with the relative position of described golden section point with described human face region central point.
Wherein, the position of the first figure in screen and preview interface is setting, therefore the first figure is shown at desired location, the central point of the first figure is identical with the relative position of described human face region central point with described golden section point with the relative position of the central point of second graph, according to the position of the relative position information determination second graph of described golden section point and described human face region central point.Preferably, described first figure and described second graph are circular or square simultaneously.Fig. 2 is that the mobile terminal that utilizes that the embodiment of the present invention provides takes the schematic diagram determining the position of second graph according to human face region central point and the relative position information of golden section point and the position of the first figure in the method for personage.As shown in Figure 2, to suppose to be positioned at preview interface be two golden section point of upper position is A (a1, b1), B (a2, b2), human face region central point is C (a3, b3), the position of the first figure remains unchanged, show at the desired location of screen, if figure first centre of figure point is O (x, v), as shown in the figure, the distance of C point and A point is large compared with the distance of C point and B point, select B point as golden section point, calculate the relative position information of C point and B point, the difference of the abscissa of C point and B point is w=a3-a2, the difference of the ordinate of C point and B point is h=b3-b2, thus determine that the central point of second graph is O1 (x+w, v+h).
The present embodiment is by obtaining the human face region central point in the current frame image of the preview interface of mobile terminal, determine the golden section point of described preview interface, calculate the relative position information of described human face region central point and described golden section point, on screen, the first figure and second graph is shown according to described relative position information, the relative position of the first figure and second graph is made to simulate the relative position of described human face region central point and described golden section point, face is moved to described golden section point according to the first figure of display and the relative position of second graph to guide user, thus guide user to take more professional, the photo of better effects if, in the photo taken, face is positioned near golden section point, improve the aesthetic feeling of taking pictures, make photo entirety more graceful.
Embodiment two
Fig. 3 is a kind of flow chart utilizing mobile terminal to take the method for personage that the embodiment of the present invention two provides.The method specifically comprises the steps:
Step 310, obtains the human face region central point in the current frame image of the preview interface of mobile terminal.
Step 320, determines the golden section point of described preview interface.
Step 330, calculates the relative position information of described human face region central point and described golden section point.
Step 340, on screen, the first figure and second graph is shown according to described relative position information, make the relative position of the first figure and second graph simulate the relative position of described human face region central point and described golden section point, according to the first figure of display and the relative position of second graph, face is moved to described golden section point to guide user.
Step 350, judges whether the distance of described first figure and second graph is less than or equal to setting threshold, if so, then starts and takes pictures.
The distance of described first figure and second graph represents the distance of golden section point and human face region central point, when the distance of the first figure and second graph is less than or equal to setting threshold, when namely the distance of human face region central point and golden section point is less than or equal to setting threshold, namely face is positioned near golden section point or when being positioned in golden section point, startup is taken pictures, take pictures, face in the photo photographed is made to be positioned near golden section point, make the ratio of the personage in photo and whole photo moderate, to promote the aesthetic feeling of taking pictures; When the distance of the first figure and second graph is greater than setting threshold, repeated execution of steps 310, step 320, step 330, step 340 and step 350, namely the human face region central point in the next frame image of the preview interface of mobile terminal is obtained, until when the distance of the first figure and second graph is less than or equal to setting threshold, start end of taking pictures.
When the distance of the distance of the central point of described first figure and the central point of described second graph is less than or equal to setting threshold, when namely the distance of human face region central point and golden section point is less than or equal to setting threshold, namely face is positioned in golden section point or when being positioned near golden section point, and startup is taken pictures.The ratio of such personage of taking and whole photo is moderate, presents certain aesthetic feeling.
The present embodiment is by obtaining the human face region central point in the current frame image of the preview interface of mobile terminal, determine the golden section point of described preview interface, calculate the relative position information of described human face region central point and described golden section point, on screen, the first figure and second graph is shown according to described relative position information, the relative position of the first figure and second graph is made to simulate the relative position of described human face region central point and described golden section point, face is moved to described golden section point according to the first figure of display and the relative position of second graph to guide user, judge whether the distance of described first figure and second graph is less than or equal to setting threshold, if, then start and take pictures, thus face is positioned near golden section point in the photo taken, improve the aesthetic feeling of taking pictures, make photo entirety more graceful, relative to embodiment one, the present embodiment is automatic camera when the distance of the first figure and second graph is less than or equal to setting threshold, avoid error during manual operation, improve the aesthetic feeling of the photo of shooting further.
Embodiment three
Fig. 4 is a kind of schematic diagram utilizing mobile terminal to take the device of personage that the embodiment of the present invention three provides.As shown in Figure 4, what the present embodiment provided utilizes the device of mobile terminal shooting personage to comprise: acquisition module 410, determination module 420, computing module 430 and display module 440.
Wherein, acquisition module 410 is for obtaining the human face region central point in the current frame image of the preview interface of mobile terminal;
Determination module 420 is for determining the golden section point of described preview interface;
Computing module 430 is for calculating the relative position information of described human face region central point and described golden section point;
Display module 440 for showing the first figure and second graph according to described relative position information on screen, make the relative position of the first figure and second graph simulate the relative position of described human face region central point and described golden section point, according to the first figure of display and the relative position of second graph, face is moved to described golden section point to guide user.
Preferably, also comprise:
Judge module, for judging whether the distance of described first figure and second graph is less than or equal to setting threshold, if so, then starting and taking pictures.
Preferably, described acquisition module comprises:
Recognin module, for utilizing face recognition algorithms, identifying the face in the current frame image of the preview interface of mobile terminal, obtaining human face region data;
Calculating sub module, for according to described human face region data, calculates human face region central point.
Preferably, described determination module comprises:
Equimolecular module, for carrying out trisection with two straight lines respectively by the wide of described preview interface and height;
Choose submodule, for according to the intersection point of four straight lines and the distance of described human face region central point, choose the golden section point of an intersection point as described preview interface.
Preferably, choose submodule described in comprise:
First chooses unit, for choose four straight lines intersection point in be positioned at two intersection points of the upper position of described preview interface;
Computing unit, for calculating the distance of described two intersection points and described human face region central point respectively;
Second chooses unit, for choosing intersection point less with the distance of described human face region central point in described two intersection points, as the golden section point of described preview interface.
Preferably, the first figure and second graph are centrosymmetric image;
Described display module comprises:
Display sub-module, for showing the first figure at the desired location of screen;
Determine submodule, for the position according to described relative position information determination second graph, and the position display second graph determined, the wherein relative position of the central point of the first figure and the central point of second graph is identical with the relative position of described golden section point with described human face region central point.
Preferably, described first figure and described second graph are circular or square simultaneously.
The present embodiment obtains the human face region central point in the current frame image of the preview interface of mobile terminal by acquisition module; Determination module determines the golden section point of described preview interface; Computing module calculates the relative position information of described human face region central point and described golden section point; Display module shows the first figure and second graph according to described relative position information on screen, make the relative position of the first figure and second graph simulate the relative position of described human face region central point and described golden section point, according to the first figure of display and the relative position of second graph, face is moved to described golden section point to guide user.Thus guide user to take photo that is more professional, better effects if, in the photo taken, face is positioned near golden section point, improves the aesthetic feeling of taking pictures, and makes photo entirety more graceful.
Note, above are only preferred embodiment of the present invention and institute's application technology principle.Skilled person in the art will appreciate that and the invention is not restricted to specific embodiment described here, various obvious change can be carried out for a person skilled in the art, readjust and substitute and can not protection scope of the present invention be departed from.Therefore, although be described in further detail invention has been by above embodiment, the present invention is not limited only to above embodiment, when not departing from the present invention's design, can also comprise other Equivalent embodiments more, and scope of the present invention is determined by appended right.
Claims (14)
1. utilize mobile terminal to take a personage's method, it is characterized in that, described method comprises:
Obtain the human face region central point in the current frame image of the preview interface of mobile terminal;
Determine the golden section point of described preview interface;
Calculate the relative position information of described human face region central point and described golden section point;
On screen, the first figure and second graph is shown according to described relative position information, make the relative position of the first figure and second graph simulate the relative position of described human face region central point and described golden section point, according to the first figure of display and the relative position of second graph, face is moved to described golden section point to guide user.
2. method according to claim 1, it is characterized in that, on screen, the first figure and second graph is being shown according to described relative position information, after making the relative position of described first figure and second graph simulate the relative position of described human face region central point and described golden section point, also comprise:
Judge whether the distance of described first figure and second graph is less than or equal to setting threshold, if so, then start and take pictures.
3. method according to claim 1, is characterized in that, obtains the human face region central point in the current frame image of the preview interface of mobile terminal, comprising:
Utilize face recognition algorithms, identify the face in the current frame image of the preview interface of mobile terminal, obtain human face region data;
According to described human face region data, calculate human face region central point.
4. method according to claim 1, is characterized in that, determines the golden section point of described preview interface, comprising:
The wide of described preview interface and height are carried out trisection with two straight lines respectively;
According to the intersection point of four straight lines and the distance of described human face region central point, choose the golden section point of an intersection point as described preview interface.
5. method according to claim 4, is characterized in that, according to the intersection point of four straight lines and the distance of described human face region central point, chooses an intersection point as the golden section point of described preview interface, comprising:
Choose two intersection points of the upper position being positioned at described preview interface in the intersection point of four straight lines;
Calculate the distance of described two intersection points and described human face region central point respectively;
Choose intersection point less with the distance of described human face region central point in described two intersection points, as the golden section point of described preview interface.
6. the method according to any one of claim 1-5, is characterized in that, the first figure and second graph are centrosymmetric image;
On screen, show the first figure and second graph according to described relative position information, make the relative position of the first figure and second graph simulate the relative position of described human face region central point and described golden section point, comprising:
The first figure is shown at the desired location of screen;
According to the position of described relative position information determination second graph, and the position display second graph determined, the wherein relative position of the central point of the first figure and the central point of second graph is identical with the relative position of described golden section point with described human face region central point.
7. method according to claim 6, is characterized in that, described first figure and described second graph are circular or square simultaneously.
8. utilize mobile terminal to take a personage's device, it is characterized in that, described device comprises:
Acquisition module, for obtaining the human face region central point in the current frame image of the preview interface of mobile terminal;
Determination module, for determining the golden section point of described preview interface;
Computing module, for calculating the relative position information of described human face region central point and described golden section point;
Display module, for showing the first figure and second graph according to described relative position information on screen, make the relative position of the first figure and second graph simulate the relative position of described human face region central point and described golden section point, according to the first figure of display and the relative position of second graph, face is moved to described golden section point to guide user.
9. device according to claim 8, is characterized in that, also comprises:
Judge module, for judging whether the distance of described first figure and second graph is less than or equal to setting threshold, if so, then starting and taking pictures.
10. device according to claim 8, is characterized in that, described acquisition module comprises:
Recognin module, for utilizing face recognition algorithms, identifying the face in the current frame image of the preview interface of mobile terminal, obtaining human face region data;
Calculating sub module, for according to described human face region data, calculates human face region central point.
11. devices according to claim 8, is characterized in that, described determination module comprises:
Equimolecular module, for carrying out trisection with two straight lines respectively by the wide of described preview interface and height;
Choose submodule, for according to the intersection point of four straight lines and the distance of described human face region central point, choose the golden section point of an intersection point as described preview interface.
12. devices according to claim 11, is characterized in that, described in choose submodule and comprise:
First chooses unit, for choose four straight lines intersection point in be positioned at two intersection points of the upper position of described preview interface;
Computing unit, for calculating the distance of described two intersection points and described human face region central point respectively;
Second chooses unit, for choosing intersection point less with the distance of described human face region central point in described two intersection points, as the golden section point of described preview interface.
13. devices according to Claim 8 described in-12 any one, it is characterized in that, the first figure and second graph are centrosymmetric image;
Described display module comprises:
Display sub-module, for showing the first figure at the desired location of screen;
Determine submodule, for the position according to described relative position information determination second graph, and the position display second graph determined, the wherein relative position of the central point of the first figure and the central point of second graph is identical with the relative position of described golden section point with described human face region central point.
14. devices according to claim 13, is characterized in that, described first figure and described second graph are circular or square simultaneously.
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| WO2018191887A1 (en) * | 2017-04-19 | 2018-10-25 | 广东欧珀移动通信有限公司 | Photographing and patterning method and apparatus, and electronic device |
| CN110622498A (en) * | 2017-04-19 | 2019-12-27 | Oppo广东移动通信有限公司 | Photographing composition method and device and electronic equipment |
| CN110622498B (en) * | 2017-04-19 | 2022-02-01 | Oppo广东移动通信有限公司 | Photographing composition method and device and electronic equipment |
| CN107483816A (en) * | 2017-08-11 | 2017-12-15 | 西安易朴通讯技术有限公司 | Image processing method, device and electronic equipment |
| CN107483816B (en) * | 2017-08-11 | 2021-01-26 | 西安易朴通讯技术有限公司 | Image processing method and device and electronic equipment |
| CN109101880A (en) * | 2018-07-05 | 2018-12-28 | 杭州晶智能科技有限公司 | Infrared image human body recognition method based on probability fusion |
| CN109101880B (en) * | 2018-07-05 | 2022-05-31 | 北京国联视讯信息技术股份有限公司 | Infrared image human body identification method based on probability fusion |
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