CN103873755B

CN103873755B - Jump portrait system and method

Info

Publication number: CN103873755B
Application number: CN201210541395.7A
Authority: CN
Inventors: 蔡智原
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Hongfujin Precision Electronics Tianjin Co Ltd
Priority date: 2012-12-14
Filing date: 2012-12-14
Publication date: 2017-06-16
Anticipated expiration: 2032-12-14
Also published as: CN103873755A

Abstract

One kind jump portrait system and method, the method includes：Obtain the first scene image of the image unit intake installed on electronic installation；Human face region is detected in the first scene image for obtaining；The center point coordinate of all human face regions for detecting is obtained, and calculates the average value of the Y-axis coordinate of all central points；When the Y-axis coordinate average value that this is calculated is more than pre-set threshold value, the shutter for starting image unit is shot, and obtains the second scene image.Using the present invention according to the face location of personage in filmed image, whether automatic decision all persons takeoff to obtain high-quality jump photo.

Description

Jump portrait system and method

Technical field

The present invention relates to image shooting system and method, more particularly to a kind of jump portrait system and method.

Background technology

User is utilizing camera head（Such as digital camera）When shooting photo, in order to take the photo of more vivid and interesting, often Jump photo can often be shot.But the jump photo for capturing perfect picture is not easy to, and general way is fixed camera Height and angle, improve camera shutter speed to be easier to capture snap action during jump, and use region Focus to avoid having personage out of focus in picture.

It is last to be just only left photographer and the person of being taken after all optical parametrics for allowing picture image quality to improve are set Between tacit agreement cooperation, but usually can shoot rhythm because of shutter and control bad, the height of the personage's jump that causes to be taken has Height has low, and picture is uneven and must re-shoot, and loses time.And some photographers just the clear-cut mode using continuous shooting come Shoot jump to shine, although this method can easily obtain jump photo, have the disadvantage to waste the memory size of camera.

The content of the invention

In view of the foregoing, it is necessary to provide a kind of jump portrait system and method, it can detecting real-time electronics dress The face location of personage in the image of shooting is put, when the average height of all face locations is more than threshold values set in advance, from The dynamic shutter that starts is shot, and obtains high-quality jump photo.

One kind jump portrait system, the system includes：Photo acquisition module, for obtaining what is installed on electronic installation First scene image of image unit intake；Face recognition module, for detecting face area in the first scene image for obtaining Domain；Human face analysis module, for obtaining the center point coordinate of all human face regions for detecting, and calculates the vertical of all central points The average value of axial coordinate；Control module, for when the ordinate of orthogonal axes average value that this is calculated is more than pre-set threshold value, starting shooting The shutter of unit is shot, and obtains the second scene image.

One kind jump portrait method, the method includes：Photo obtaining step, obtains the shooting installed on electronic installation First scene image of unit intake；Recognition of face step, human face region is detected in the first scene image for obtaining；Face point Analysis step, obtains the center point coordinate of all human face regions for detecting, and calculates the average of the ordinate of orthogonal axes of all central points Value；Rate-determining steps, when the ordinate of orthogonal axes average value that this is calculated is more than pre-set threshold value, the shutter for starting image unit is clapped Take the photograph, obtain the second scene image.

Compared to prior art, described jump portrait system and method, it can the shooting of detecting real-time electronic installation Image in personage face location, when all face locations average height be more than threshold values set in advance when, automatic Shutter is shot, and obtains high-quality jump photo, it is to avoid between photographer and the person of being taken because of tacit deficiency caused by Personage's jump has the problem of difference of height in shooting picture.

Brief description of the drawings

Fig. 1 is present invention jump portrait systematic difference environment schematic.

Fig. 2 is the functional block diagram of present invention jump portrait system.

Fig. 3 is the flow chart of present invention jump portrait method preferred embodiment.

Fig. 4 is to set the schematic diagram for shooting datum line.

Fig. 5 is the schematic diagram that human face region is detected in the first scene image.

Fig. 6 is the schematic diagram of the Y-axis coordinate average value of the central point for calculating all human face regions.

Fig. 7 and Fig. 8 are that the Y-axis coordinate average value that will be calculated in Fig. 6 is carried out with the Y-axis coordinate of default shooting datum line The schematic diagram of comparison.

Fig. 9 to Figure 13 is a mode of operation schematic diagram for application example of the invention.Main element symbol description

Electronic installation

2

Image unit	20
		Display screen	22
Memory	23
		Jump portrait system	24
Processor	25
		Datum line setup module	240
Photo acquisition module	241
		Face recognition module	242
Human face analysis module	243
		Control module	244

Specific embodiment

As shown in figure 1, being present invention jump portrait systematic difference environment schematic.In the present embodiment, the jump Jump portrait system 24 is run in an electronic installation 2.The electronic installation 2 also includes passing through holding wire and data wire phase Image unit 20 even, display screen 22, memory 23 and processor 25.In the present embodiment, the electronic installation 2 can be Smart mobile phone, digital camera and PDA（Personal Digital Assistant, personal digital assistant）Deng.

The jump portrait system 24 is used for people in the image that the image unit 20 of detecting real-time electronic installation 2 shoots The face location of thing, when the average height of all face locations is more than threshold values set in advance, automatic image unit 20 Shutter shot, obtain high-quality jump photo, below detailed process describe.

In the present embodiment, the jump portrait system 24 can be divided into one or more modules, described one Individual or multiple modules are stored in the memory 23 and are configured to by one or more processors（The present embodiment is one Processor 25）Perform, to complete the present invention.For example, refering to shown in Fig. 2, the jump portrait system 24 is divided into base Directrix setup module 240, photo acquisition module 241, face recognition module 242, human face analysis module 243 and control module 244. Module alleged by the present invention be complete a specific function program segment, than program more suitable for description software in processor 25 Implementation procedure, the function on each module will be specifically described in the flowchart of fig. 3.

Before Fig. 3 flow charts are introduced, user sets a bat by datum line setup module 240 on display screen 22 Take the photograph datum line（Refering to shown in Fig. 9）.With continued reference to shown in Fig. 4, square region represents the scope of current scene image, current scene The transverse axis of image represents that the longitudinal axis is represented with Y-axis with X-axis, after user sets the shooting datum line on display screen 22, benchmark Line setup module 240 will obtain the Y-axis coordinate Yc of the shooting datum line, as the shooting datum line in current scene image Y-axis is highly stored in memory 23.

As shown in figure 3, being the flow chart of present invention jump portrait method preferred embodiment.

Step S10, photo acquisition module 241 is every Preset Time（Such as 0.1 second）, that is installed on acquisition electronic installation 2 takes the photograph As the first scene image of the intake of unit 20（Refering to shown in Figure 10）.

Step S11, face recognition module 242 detects human face region in the first scene image for obtaining（Refering to Figure 11 institutes Show）.In the present embodiment, the face recognition module 242 can be theoretical using the colour of skin（Such as YCbCr color space models）From All of human face region is identified in one scene image, it is also possible to utilize face feature sample comparison technology（FaceTemplate Matching）Or other facial recognition techniques identify all human face regions from the first scene image.Wherein, the face area Domain can be a minimum rectangle for surrounding face.

For example, refering to shown in Fig. 5, face recognition module 242 identified from the first scene image three human face region A, B, C, wherein, the center point coordinate of human face region A is（X0, Y0）, the center point coordinate of human face region B is（X1, Y1）, face area The center point coordinate of domain C is（X2, Y2）.Wherein, the Y-axis coordinate of a face regional center point represents the human face region first Y-axis height value in scene image.

Step S12, face recognition module 242 judges whether to detect human face region in the first scene image.If Human face region is detected in first scene image, then performs step S13.If not detecting face in the first scene image Region, then return to step S10.

Step S13, human face analysis module 243 obtains the center point coordinate of each human face region, and calculates all central points Y-axis coordinate average value Y_avg（Refering to shown in Figure 11）.

By taking the coordinate of the human face region central point obtained in Fig. 5 as an example, human face analysis module 243 obtains human face region A's The Y-axis coordinate Y0 of central point, the Y-axis coordinate Y1 of the central point of human face region B, the Y-axis coordinate Y2 of the central point of human face region C, Then Y_avg=（Y0+Y1+Y2）/3（Refering to shown in Fig. 6）.

Step S14, the Y-axis coordinate average value Y that human face analysis module 243 calculates this_avgWith the shooting base for pre-setting The Y-axis coordinate Y of directrix_cCompare, judge Y_avgWhether Y is more than_c.If Y_avgLess than or equal to Y_c（Refering to Fig. 7 and Figure 12 institutes Show）, then judge also have personage not takeoff in the first scene image, flow return to step S10；If Y_avgMore than Y_c（Refering to figure Shown in 8 and Figure 13）, then judge that all persons in the first scene image have all takeoff, perform step S15.

Step S15, the shutter that control module 244 starts image unit 20 is shot, and obtains the second scene image.Its In, all persons in second scene image have all takeoff, and reach the best time for catching and shooting jump photo.

Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although reference Preferred embodiment has been described in detail to the present invention, it will be understood by those within the art that, can be to of the invention Technical scheme is modified or equivalent, without deviating from the spirit and scope of technical solution of the present invention.

Claims

1. a kind of jump portrait system, it is characterised in that the system includes：

Photo acquisition module, the first scene image for obtaining the image unit installed on electronic installation intake；

Face recognition module, for detecting multiple human face regions in the first scene image for obtaining；

Human face analysis module, for obtaining the center point coordinate of all human face regions for detecting, and calculates all central points The average value of ordinate of orthogonal axes；And

Control module, for when the ordinate of orthogonal axes average value that this is calculated is more than pre-set threshold value, starting the shutter of image unit Shot, obtained the second scene image, central point of the pre-set threshold value more than any human face region in the first scene The ordinate of orthogonal axes of coordinate.

2. jump portrait system as claimed in claim 1, it is characterised in that the system also includes：

Datum line setup module, for setting a shooting datum line on the display screen of electronic installation, and obtains the shooting The ordinate of orthogonal axes of datum line.

3. jump portrait system as claimed in claim 2, it is characterised in that the pre-set threshold value is the shooting datum line Ordinate of orthogonal axes.

4. jump portrait system as claimed in claim 1, it is characterised in that the face recognition module is according to YCbCr Color space model identifies all of human face region from the first scene image.

5. jump portrait system as claimed in claim 1, it is characterised in that the face recognition module is special according to face Levy sample comparison technology and all human face regions are identified from the first scene image.

6. a kind of jump portrait method, it is characterised in that the method includes：

Photo obtaining step, obtains the first scene image of the image unit intake installed on electronic installation；

Recognition of face step, detects multiple human face regions in the first scene image for obtaining；

Human face analysis step, obtains the center point coordinate of all human face regions for detecting, and calculates the longitudinal axis of all central points The average value of coordinate；And

Rate-determining steps, when the ordinate of orthogonal axes average value that this is calculated is more than pre-set threshold value, the shutter for starting image unit is carried out Shoot, obtain the second scene image, center point coordinate of the pre-set threshold value more than any human face region in the first scene Ordinate of orthogonal axes.

7. jump portrait method as claimed in claim 6, it is characterised in that the method also includes：

Datum line setting steps, set a shooting datum line, and obtain the shooting benchmark on the display screen of electronic installation The ordinate of orthogonal axes of line.

8. jump portrait method as claimed in claim 7, it is characterised in that the pre-set threshold value is the shooting datum line Ordinate of orthogonal axes.

9. jump portrait method as claimed in claim 6, it is characterised in that the recognition of face step includes：

All of human face region is identified from the first scene image according to YCbCr color space models.

10. jump portrait method as claimed in claim 6, it is characterised in that the recognition of face step includes：

All human face regions are identified from the first scene image according to face feature sample comparison technology.