CN103501411A - Image shooting method and system - Google Patents

Image shooting method and system Download PDF

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Publication number
CN103501411A
CN103501411A CN201310466760.7A CN201310466760A CN103501411A CN 103501411 A CN103501411 A CN 103501411A CN 201310466760 A CN201310466760 A CN 201310466760A CN 103501411 A CN103501411 A CN 103501411A
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China
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described
image
face
people
whether
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CN201310466760.7A
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Chinese (zh)
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王鼎
陈继
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中科创达软件股份有限公司
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Priority to CN201310466760.7A priority Critical patent/CN103501411A/en
Publication of CN103501411A publication Critical patent/CN103501411A/en

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Abstract

The invention discloses an image shooting method and system. The image shooting method comprises the following steps of: acquiring an image currently acquired by electronic equipment; judging whether a face exists in the image and obtaining a first judgment result; when the first judgment result is yes, determining the position of the face in the image; judging whether the position meets a first preset condition, and obtaining a second judgment result; when the second judgment result is yes, prompting to bring convenience for a user to determine the shooting actuating operation. The method and system adopted by the invention have the advantages that a self-shot image with high quality can be obtained, and the user experience is enhanced.

Description

A kind of image capturing method and system

Technical field

The present invention relates to data processing field, particularly relate to a kind of image capturing method and system.

Background technology

Along with the development of electronic device technology, increasing electronic equipment has camera function.The frequency that the user adopts electronic equipment to autodyne is also more and more higher.

The so-called auto heterodyne, refer to that the holder of the electronic equipment with camera function adopts described electronic equipment to take the process of the image of self.In the auto heterodyne process, the emphasis of shooting normally concentrates on auto heterodyne person's facial zone.

In prior art, the number for the electronic equipment of autodyning according to camera, can be divided into two classes.The first kind is the electronic equipment that only has a post-positioned pick-up head, and Equations of The Second Kind is the electronic equipment with front-facing camera.When the user adopts first kind electronic equipment to autodyne, because post-positioned pick-up head is positioned at the rear of electronic equipment, back to display screen, so observe shooting picture when the user can't autodyne again, thereby also can't know the image detail in the auto heterodyne process, can only rule of thumb select shooting angle.When the shooting angle of selecting is incorrect, the picture quality obtained is lower.When the user adopts the Equations of The Second Kind electronic equipment to autodyne, because the pixel of front-facing camera usually is lower compared to the pixel of post-positioned pick-up head, the quality of the image that causes autodyning is also lower.

In sum, self-timer method of the prior art, the picture quality that shooting obtains is lower.

Summary of the invention

The purpose of this invention is to provide a kind of image capturing method and system, can improve the picture quality that adopts electronic equipment to autodyne and obtain, strengthen user's impression.

For achieving the above object, the invention provides following scheme:

A kind of image capturing method, described method comprises:

Obtain the current image got of electronic equipment;

Judge in described image and whether have people's face, obtain the first judged result;

Judgment result is that and determine the position of described people's face in described image while being when described first;

Judge that whether described position meets first pre-conditioned, obtain the second judged result;

Judgment result is that and pointed out, so that the user confirms to carry out shooting operation while being when described second.

Optionally, described to judge that whether described position meets first pre-conditioned, comprising:

Judge whether the position of described people's face is positioned at the central area of described image.

Optionally, describedly judge that whether the position of described people's face is positioned at the central area of described image, comprising:

Obtain the first coordinate of the central point of described people's face;

Obtain the second coordinate of the central point of described image;

Calculate the distance between described the first coordinate and described the second coordinate;

Judge whether described distance is less than the first default value.

Optionally, before being pointed out, described method also comprises:

Judgment result is that while being when described second, analyze exposure, contrast and the definition of described image, obtain the first analysis result;

Judge that whether described the first analysis result meets second pre-conditioned, obtain the 3rd judged result;

Judgment result is that and pointed out while being when the described the 3rd.

Optionally, the described prompting comprises:

Lighting the first indicator light is pointed out;

And/or, control the first indicator light and shown to be pointed out with the first color;

And/or control loudspeaker sends the first sound tone signal to be pointed out.

A kind of image capturing apparatus, described system comprises:

Image collection module, for obtaining the current image got of electronic equipment;

Whether the first judge module, exist people's face for judging described image, obtains the first judged result;

Position determination module, for judgment result is that and determine the position of described people's face in described image while being when described first;

The second judge module, first pre-conditioned for judging that whether described position meets, obtain the second judged result;

Reminding module, for judgment result is that and pointed out, so that the user confirms to carry out shooting operation while being when described second.

Optionally, described the second judge module comprises:

Whether the second judging unit, be positioned at the central area of described image for the position that judges described people's face.

Optionally, described the second judging unit comprises:

The first coordinate obtains subelement, for the first coordinate of the central point that obtains described people's face;

The second coordinate obtains subelement, for the second coordinate of the central point that obtains described image;

Apart from computation subunit, for calculating the distance between described the first coordinate and described the second coordinate;

Whether the second judgment sub-unit, be less than the first default value for judging described distance.

Optionally, described system also comprises:

The first analysis module, for before being pointed out, judgment result is that while being when described second, analyzes exposure, contrast and the definition of described image, obtains the first analysis result;

The 3rd judge module, second pre-conditioned for judging that whether described the first analysis result meets, obtain the 3rd judged result; Judgment result is that and control described reminding module and pointed out while being when the described the 3rd.

Optionally, described reminding module comprises:

The first Tip element, pointed out for lighting the first indicator light;

The second Tip element, shown to be pointed out with the first color for controlling the first indicator light;

The 3rd Tip element, send the first sound tone signal to be pointed out for control loudspeaker.

According to specific embodiment provided by the invention, the invention discloses following technique effect:

The image capturing method of the embodiment of the present invention and system, by obtaining the current image got of electronic equipment; Judge in described image and whether have people's face, when having people's face, determine the position of described people's face in described image; Judge that whether described position meets first pre-conditioned, when meeting first when pre-conditioned, the user is pointed out, while making the user adopt the post-positioned pick-up head auto heterodyne on electronic equipment, also can know whether actual shooting angle meets the demands, and then obtain high-quality auto heterodyne image, strengthen user's impression.

The accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment be briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.

The flow chart that Fig. 1 is image capturing method embodiment 1 of the present invention;

The flow chart that Fig. 2 is image capturing method embodiment 2 of the present invention;

The flow chart that Fig. 3 is image capturing method embodiment 3 of the present invention;

The flow chart that Fig. 4 is image capturing method embodiment 4 of the present invention;

The structure chart that Fig. 5 is image capturing apparatus embodiment 1 of the present invention;

The structure chart that Fig. 6 is image capturing apparatus embodiment 2 of the present invention;

The structure chart that Fig. 7 is image capturing apparatus embodiment 3 of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making under the creative work prerequisite the every other embodiment obtained, belong to the scope of protection of the invention.

For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.

The flow chart that Fig. 1 is image capturing method embodiment 1 of the present invention.As shown in Figure 1, the method can comprise:

Step 101: obtain the current image got of electronic equipment;

Described electronic equipment in each embodiment of the present invention can be the electronic equipments such as digital camera, smart mobile phone, panel computer.At least there is a camera on described electronic equipment.The user can use described camera to be autodyned.

When described electronic equipment, during in camera mode, the scenery in the image acquisition scope of the camera of described electronic equipment all can form display frame on the screen of described electronic equipment, and shows.Described display frame is the current image got.

Step 102: judge in described image and whether have people's face, obtain the first judged result;

Can pass through face recognition technology, judge in described image and whether have people's face.Face recognition technology of the prior art all is applicable to the present embodiment.For example, can adopt the Haar-Like feature to carry out recognition of face in conjunction with the Adaboost algorithm.

Haar-Like feature in this step also is rectangular characteristic, by people such as Viola, is proposed calendar year 2001, and several particular types are arranged, as two rectangular characteristic, three rectangular characteristic and four rectangular characteristic.The rectangular characteristic value refers to the difference of the inner all grey scale pixel value sums of rectangle that on image, two or more shape sizes are identical.In system, the unified all grey scale pixel value sums of white portion that adopt deduct all grey scale pixel value sums of black region.For an image, can be in image the optional position feature of putting into any size detected.Some features of people's face can be described simply by rectangular characteristic, and for example, eyes are darker than cheek color usually, and bridge of the nose both sides are darker than bridge of the nose color, and face is darker than ambient color.Can reflect certain people's face characteristic so construct this Haar-Like feature.

The basic thought of Adaboost algorithm is that Weak Classifier that a large amount of classification capacities are general is by certain Combination of Methods, form a strong classifier, so by using a large amount of common Haar-Like features, form the level grader, finally can obtain a well behaved human-face detector.

It should be noted that, while in described image, thering is a plurality of people's face, can be by display area maximum and be defined as the people's face in step 102 with people's face that the angle of camera approaches 90 degree most.The display area maximum can mean that this people's face is closer apart from camera.With the angle of camera approach most 90 degree can mean this people's face compared to other people's face more over against camera.And usually when autodyning, people's face that electronic equipment need to be taken is also nearest and over against camera, so, can be by display area maximum and be defined as the people's face in step 102 with people's face that the angle of camera approaches 90 degree most.

Step 103: judgment result is that and determine the position of described people's face in described image while being when described first;

Can determine the position of described people's face in described image by the coordinate information of described people's face in described image.Can be the position of described people's face in described image by the location positioning of the central point of described people's face.Described central point can be the geometric center point of described people's face.Suppose that described central point is positioned at the center of described image, can mean that described people's face also is positioned at the center of described image.

Step 104: judge that whether described position meets first pre-conditioned, obtain the second judged result;

Described first pre-conditioned can be the central area that the described position of described people's face is positioned at described image, can be also other specific regions that the described position of described people's face is positioned at described image.Described specific region can be for example left side, right side or top, below or the upper left corner, upper right corner etc.Described specific region also can be specified or be arranged by the user.

Whether the distance of the central point of central point that can be by judging described people's face and the specific region of described image is less than a certain predetermined threshold value judges whether described people's face is positioned at described specific region.

Step 105: judgment result is that and pointed out, so that the user confirms to carry out shooting operation while being when described second.

Can be provided with indicator light and or loud speaker on described electronic equipment.Can in the mode of light or sound, be pointed out by described indicator light or loud speaker.Described indicator light can be the indicator light of LED type, in order to reduce, lights the electric weight that indicator light consumes.

Concrete, described prompting can be to light the first indicator light to be pointed out;

And/or, control the first indicator light and shown to be pointed out with the first color;

And/or control loudspeaker sends the first sound tone signal to be pointed out.

When described the first indicator light is lit, perhaps the color of described the first indicator light becomes the first color, or loud speaker sent specific sound, illustrates that people's face has been positioned at the appointed area of shooting picture, the user can press shutter, confirms to make described electronic equipment to carry out shooting operation.

In sum, in the present embodiment, by obtaining the current image got of electronic equipment; Judge in described image and whether have people's face, when having people's face, determine the position of described people's face in described image; Judge that whether described position meets first pre-conditioned, when meeting first when pre-conditioned, the user is pointed out, while making the user adopt the post-positioned pick-up head auto heterodyne on electronic equipment, also can know whether actual shooting angle meets the demands, and then obtain high-quality auto heterodyne image, strengthen user's impression.

The flow chart that Fig. 2 is image capturing method embodiment 2 of the present invention.As shown in Figure 2, the method can comprise:

Step 201: obtain the current image got of electronic equipment;

Step 202: judge in described image and whether have people's face, obtain the first judged result;

Step 203: judgment result is that while being when described first, obtain the first coordinate of the central point of described people's face;

The result that can detect according to people's face is determined the position M (x, y) of central point in image of people's face.

Step 204: the second coordinate that obtains the central point of described image;

The height of supposing described image is H, and wide is W, and the center position of image is C (x, y)=(W/2, H/2)

Step 205: calculate the distance between described the first coordinate and described the second coordinate;

Can mean the distance of some M to some C with dist (M, C), according to formula calculate the distance between described the first coordinate and described the second coordinate.

Step 206: judge that whether described distance is less than the first default value, obtains the second judged result;

Step 207: judgment result is that and light the first indicator light and pointed out, so that the user confirms to carry out shooting operation while being when described second.

Disclose in the present embodiment and a kind ofly judged whether the position of described people's face is positioned at the concrete mode of the central area of described image.

The flow chart that Fig. 3 is image capturing method embodiment 3 of the present invention.As shown in Figure 3, the method can comprise:

Step 301: obtain the current image got of electronic equipment;

Step 302: judge in described image and whether have people's face, obtain the first judged result;

Step 303: judgment result is that and determine the position of described people's face in described image while being when described first;

Step 304: judge that whether described position meets first pre-conditioned, obtain the second judged result;

Step 305: judgment result is that while being when described second, analyze exposure, contrast and the definition of described image, obtain the first analysis result;

Judgment result is that and illustrate that user's auto heterodyne angle is proper while being when second.

But, except shooting angle, also have other factors to impact picture quality.These factors comprise usually said picture quality, specifically can comprise exposure, contrast and the definition of image.

Step 306: judge that whether described the first analysis result meets second pre-conditioned, obtain the 3rd judged result;

Described second is pre-conditioned, can be the default value scope of exposure, contrast and the definition of described image.

When the actual numerical value of exposure, contrast and the definition of the image obtained is positioned at described default value scope, mean that satisfied second is pre-conditioned in described the first analysis result.The image obtained of autodyning looks like clearly.

Step 307: judgment result is that and pointed out, so that the user confirms to carry out shooting operation while being when the described the 3rd.

In the present embodiment, when user's shooting angle meet pre-conditioned after, can also be analyzed the image quality of image, when the image quality of image meets second when pre-conditioned, just send prompting, can guarantee that it is clearly that the user takes the image obtained.

The flow chart that Fig. 4 is image capturing method embodiment 4 of the present invention.As shown in Figure 4, the method can comprise:

Step 401: obtain the current image got of electronic equipment;

Step 402: judge in described image and whether have people's face, obtain the first judged result;

Step 403: judgment result is that and determine the position of described people's face in described image while being when described first;

Step 404: judge that whether described position meets first pre-conditioned, obtain the second judged result;

Step 405: judgment result is that while being when described second, analyze the expression of described people's face, obtain the second analysis result;

Concrete, the degree of the smile that expression that can analysis user means.The amplitude that the corners of the mouth in people's face raises up is larger, can mean that user's smile degree is higher.Different smile degree can mean with different grade points.

Step 406: judge that whether described the second analysis result meets the 3rd pre-conditioned, obtain the 4th judged result;

Can judge whether described grade point is equal to or greater than the predetermined level value.

Step 407: judgment result is that and pointed out, so that the user confirms to carry out shooting operation while being when the described the 4th.

In the present embodiment, by the expression of analyst's face, when expression meets pre-conditionedly, the user is pointed out, can be made user's obtain more easily thering is certain expression auto heterodyne image of (for example smiling).

The invention also discloses a kind of image capturing apparatus.The structure chart that Fig. 5 is image capturing apparatus embodiment 1 of the present invention.As shown in Figure 5, this system can comprise:

Image collection module 501, for obtaining the current image got of electronic equipment;

Whether the first judge module 502, exist people's face for judging described image, obtains the first judged result;

Position determination module 503, for judgment result is that and determine the position of described people's face in described image while being when described first;

The second judge module 504, first pre-conditioned for judging that whether described position meets, obtain the second judged result;

Described the second judge module 504 can comprise:

Whether the second judging unit, be positioned at the central area of described image for the position that judges described people's face.

Reminding module 505, for judgment result is that and pointed out, so that the user confirms to carry out shooting operation while being when described second.

Described reminding module 505 can comprise:

The first Tip element, pointed out for lighting the first indicator light;

The second Tip element, shown to be pointed out with the first color for controlling the first indicator light;

The 3rd Tip element, send the first sound tone signal to be pointed out for control loudspeaker.

In the present embodiment, by obtaining the current image got of electronic equipment; Judge in described image and whether have people's face, when having people's face, determine the position of described people's face in described image; Judge that whether described position meets first pre-conditioned, when meeting first when pre-conditioned, the user is pointed out, while making the user adopt the post-positioned pick-up head auto heterodyne on electronic equipment, also can know whether actual shooting angle meets the demands, and then obtain high-quality auto heterodyne image, strengthen user's impression.

The structure chart that Fig. 6 is image capturing apparatus embodiment 2 of the present invention.As shown in Figure 6, this system can comprise:

Image collection module 501, for obtaining the current image got of electronic equipment;

Whether the first judge module 502, exist people's face for judging described image, obtains the first judged result;

The first coordinate obtains subelement 601, for judgment result is that while being when described first, obtains the first coordinate of the central point of described people's face;

The second coordinate obtains subelement 602, for the second coordinate of the central point that obtains described image;

Apart from computation subunit 603, for calculating the distance between described the first coordinate and described the second coordinate;

Whether the second judgment sub-unit 604, be less than the first default value for judging described distance., obtain the second judged result;

Reminding module 505, for judgment result is that and pointed out, so that the user confirms to carry out shooting operation while being when described second.

The structure chart that Fig. 7 is image capturing apparatus embodiment 3 of the present invention.As shown in Figure 7, this system can comprise:

Image collection module 501, for obtaining the current image got of electronic equipment;

Whether the first judge module 502, exist people's face for judging described image, obtains the first judged result;

The first coordinate obtains subelement 601, for judgment result is that while being when described first, obtains the first coordinate of the central point of described people's face;

The second coordinate obtains subelement 602, for the second coordinate of the central point that obtains described image;

Apart from computation subunit 603, for calculating the distance between described the first coordinate and described the second coordinate;

Whether the second judgment sub-unit 604, be less than the first default value for judging described distance., obtain the second judged result;

The first analysis module 701, for before being pointed out, judgment result is that while being when described second, analyzes exposure, contrast and the definition of described image, obtains the first analysis result;

The 3rd judge module 702, second pre-conditioned for judging that whether described the first analysis result meets, obtain the 3rd judged result; Judgment result is that and control described reminding module and pointed out while being when the described the 3rd.

Reminding module 505, for being pointed out, so that the user confirms to carry out shooting operation.

In the present embodiment, when user's shooting angle meet pre-conditioned after, can also be analyzed the image quality of image, when the image quality of image meets second when pre-conditioned, just send prompting, can guarantee that it is clearly that the user takes the image obtained.

In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment that between each embodiment, identical similar part is mutually referring to getting final product.For the disclosed system of embodiment, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part partly illustrates and gets final product referring to method.

Applied specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications.In sum, this description should not be construed as limitation of the present invention.

Claims (10)

1. an image capturing method, is characterized in that, described method comprises:
Obtain the current image got of electronic equipment;
Judge in described image and whether have people's face, obtain the first judged result;
Judgment result is that and determine the position of described people's face in described image while being when described first;
Judge that whether described position meets first pre-conditioned, obtain the second judged result;
Judgment result is that and pointed out, so that the user confirms to carry out shooting operation while being when described second.
2. method according to claim 1, is characterized in that, described to judge that whether described position meets first pre-conditioned, comprising:
Judge whether the position of described people's face is positioned at the central area of described image.
3. method according to claim 2, is characterized in that, describedly judges that whether the position of described people's face is positioned at the central area of described image, comprising:
Obtain the first coordinate of the central point of described people's face;
Obtain the second coordinate of the central point of described image;
Calculate the distance between described the first coordinate and described the second coordinate;
Judge whether described distance is less than the first default value.
4. method according to claim 1, is characterized in that, before being pointed out, described method also comprises:
Judgment result is that while being when described second, analyze exposure, contrast and the definition of described image, obtain the first analysis result;
Judge that whether described the first analysis result meets second pre-conditioned, obtain the 3rd judged result;
Judgment result is that and pointed out while being when the described the 3rd.
5. according to the described method of claim 1-4 any one, it is characterized in that, the described prompting comprises:
Lighting the first indicator light is pointed out;
And/or, control the first indicator light and shown to be pointed out with the first color;
And/or control loudspeaker sends the first sound tone signal to be pointed out.
6. an image capturing apparatus, is characterized in that, described system comprises:
Image collection module, for obtaining the current image got of electronic equipment;
Whether the first judge module, exist people's face for judging described image, obtains the first judged result;
Position determination module, for judgment result is that and determine the position of described people's face in described image while being when described first;
The second judge module, first pre-conditioned for judging that whether described position meets, obtain the second judged result;
Reminding module, for judgment result is that and pointed out, so that the user confirms to carry out shooting operation while being when described second.
7. system according to claim 6, is characterized in that, described the second judge module comprises:
Whether the second judging unit, be positioned at the central area of described image for the position that judges described people's face.
8. system according to claim 7, is characterized in that, described the second judging unit comprises:
The first coordinate obtains subelement, for the first coordinate of the central point that obtains described people's face;
The second coordinate obtains subelement, for the second coordinate of the central point that obtains described image;
Apart from computation subunit, for calculating the distance between described the first coordinate and described the second coordinate;
Whether the second judgment sub-unit, be less than the first default value for judging described distance.
9. system according to claim 6, is characterized in that, described system also comprises:
The first analysis module, for before being pointed out, judgment result is that while being when described second, analyzes exposure, contrast and the definition of described image, obtains the first analysis result;
The 3rd judge module, second pre-conditioned for judging that whether described the first analysis result meets, obtain the 3rd judged result; Judgment result is that and control described reminding module and pointed out while being when the described the 3rd.
10. according to the described system of claim 6-9 any one, it is characterized in that, described reminding module comprises:
The first Tip element, pointed out for lighting the first indicator light;
The second Tip element, shown to be pointed out with the first color for controlling the first indicator light;
The 3rd Tip element, send the first sound tone signal to be pointed out for control loudspeaker.
CN201310466760.7A 2013-10-09 2013-10-09 Image shooting method and system CN103501411A (en)

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CN104580897A (en) * 2014-12-25 2015-04-29 魅族科技(中国)有限公司 View finding method for shooting and terminal
CN104580897B (en) * 2014-12-25 2018-02-06 魅族科技(中国)有限公司 Shoot find a view method and terminal
CN105763779A (en) * 2016-03-31 2016-07-13 联想(北京)有限公司 Electronic equipment and prompt method
CN107451453A (en) * 2017-07-28 2017-12-08 广东欧珀移动通信有限公司 Solve lock control method and Related product

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Application publication date: 20140108