CN108062740A - A kind of mobile terminal and its U.S. face method and system - Google Patents
A kind of mobile terminal and its U.S. face method and system Download PDFInfo
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- CN108062740A CN108062740A CN201711318652.XA CN201711318652A CN108062740A CN 108062740 A CN108062740 A CN 108062740A CN 201711318652 A CN201711318652 A CN 201711318652A CN 108062740 A CN108062740 A CN 108062740A
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 230000005055 memory storage Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 12
- 230000001815 facial effect Effects 0.000 abstract description 2
- 230000006870 function Effects 0.000 description 7
- 230000003287 optical effect Effects 0.000 description 6
- 230000003321 amplification Effects 0.000 description 5
- 238000003384 imaging method Methods 0.000 description 5
- 238000003199 nucleic acid amplification method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000004590 computer program Methods 0.000 description 3
- 229910003460 diamond Inorganic materials 0.000 description 3
- 239000010432 diamond Substances 0.000 description 3
- 241000251468 Actinopterygii Species 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
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- 210000003128 head Anatomy 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformations in the plane of the image
- G06T3/04—Context-preserving transformations, e.g. by using an importance map
- G06T3/047—Fisheye or wide-angle transformations
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/77—Retouching; Inpainting; Scratch removal
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Abstract
The invention discloses a kind of mobile terminal and its U.S. face method and system, wherein, the described method includes：Picture obtaining step：Obtain the picture of camera shooting；Picture U.S. face step：Using the center of the picture as starting point, the picture along first straight line is stretched out, is stretched out along second straight line, edge of the stretch range from the center of picture to picture is progressively incremented by；The first straight line and second straight line intersect at the center of picture.By the way that picture is stretched out along four direction, picture shows situation about " distorting " inwardly.Area ratio shared by image in center becomes smaller, and visually seems small, so as to reduce the anamorphose caused by single-point is imaged, by the U.S. face effect that can reach thin face to the processing of facial image.
Description
Technical field
The present invention relates to communication of mobile terminal technical fields, and in particular to a kind of mobile terminal and its U.S. face method and is
System.
Background technology
In reality scene, user can run into similar problems " using the face that mobile phone photograph is taken than oneself being seen in mirror certainly
Oneself face is big ", and " see in mirror oneself according to see in piece oneself is good-looking " " why I in photo compares true man
It is ugly ".These are led to the problem of, the reason is as follows that：
Human eye is to go to see with two eyes, is two imaging points；There is observation difference with the camera of an imaging point.Camera shooting
Head is due to being a little to be imaged, therefore the face of close shot shooting seems bigger than real face, the effect of similar flake.Even now
The dual camera used, algorithm cannot still reach to be synthesized as human eye so that camera shooting image spatial impression and
Three-dimensional sense and the imaging in human eye are different.
The content of the invention
The present invention is intended to provide a kind of mobile terminal and its U.S. face method and system, are schemed with reducing caused by single-point is imaged
Distortion of image.
First aspect present invention provides a kind of U.S. face method of mobile terminal, includes the following steps：
Picture obtaining step：Obtain the picture of camera shooting；
Picture U.S. face step：Using the center of the picture as starting point, the picture is stretched out along first straight line, along
Two straight lines stretch out, and edge of the stretch range from the center of picture to picture is progressively incremented by；The first straight line and second is directly
Line intersects at the center of picture.
The U.S. face method of the mobile terminal, wherein, after picture U.S. face step, further include following steps：
Cut step：Picture after stretching by the size before stretching is cut, obtains the picture after U.S. face.
The U.S. face method of the mobile terminal, wherein, the first straight line and second straight line are respectively the picture
Two diagonal.
The U.S. face method of the mobile terminal, wherein, when picture stretches, the length of two central axes of picture is kept
It is constant.
Second aspect of the present invention provides a kind of U.S. face system of mobile terminal, including：
Picture U.S. face module, for obtaining the picture of camera shooting；Using the center of the picture as starting point, by the picture
It stretches out along first straight line, stretched out along second straight line, edge of the stretch range from the center of picture to picture is progressively passed
Increase；The first straight line and second straight line intersect at the center of picture.
The U.S. face system of the mobile terminal, wherein, it further includes：
Module is cut, for the picture after stretching to be cut by the size before stretching, obtains the picture after U.S. face.
The U.S. face system of the mobile terminal, wherein, the first straight line and second straight line are respectively the picture
Two diagonal.
The U.S. face system of the mobile terminal, wherein, when picture stretches, the length of two central axes of picture is kept
It is constant.
Third aspect present invention provides a kind of mobile terminal, including：
Memory, for storing program；
Processor, for passing through the U.S. face for performing the program of the memory storage to realize mobile terminal described above
Method.
Fourth aspect present invention provides a kind of computer readable storage medium, and including program, described program can be processed
Device performs to realize the U.S. face method of mobile terminal described above.
Beneficial effects of the present invention：The present invention provides a kind of mobile terminal and its U.S. face method and system, wherein, it is described
Method includes：Picture obtaining step：Obtain the picture of camera shooting；Picture U.S. face step：Using the center of the picture as starting point,
The picture along first straight line is stretched out, is stretched out along second straight line, stretch range is from the center of picture to picture
Edge is progressively incremented by；The first straight line and second straight line intersect at the center of picture.By the way that picture is outside along four direction
It stretches, picture shows situation about " distorting " inwardly.Area ratio shared by image in center becomes smaller, and visually seems
It is small, so as to reduce the anamorphose caused by single-point is imaged, imitated by the U.S. face that can reach thin face to the processing of facial image
Fruit.
Description of the drawings
Fig. 1 is the flow chart of the U.S. face method of mobile terminal provided by the invention；
Fig. 2 is the schematic diagram of grid division before picture stretches in the U.S. face method of mobile terminal provided by the invention；
Fig. 3 is the schematic diagram after picture stretching in the U.S. face method of mobile terminal provided by the invention；
Fig. 4 is the structure diagram of the U.S. face system of mobile terminal provided by the invention；
Fig. 5 is the structure diagram of mobile terminal provided by the invention.
Specific embodiment
The present invention is described in further detail below by specific embodiment combination attached drawing.Wherein different embodiments
Middle similar component employs associated similar element numbers.In the following embodiments, many datail descriptions be in order to
The application is better understood.However, those skilled in the art can be without lifting an eyebrow recognize, which part feature
It is dispensed or can be substituted by other elements, material, method in varied situations.In some cases, this Shen
Please relevant certain operations there is no in the description show or describe, this is the core in order to avoid the application by mistake
More descriptions are flooded, and to those skilled in the art, be described in detail these relevant operations be not it is necessary, they
The general technology knowledge of description and this field in specification can completely understand relevant operation.
In addition, feature described in this description, operation or feature can combine to form respectively in any suitable way
Kind embodiment.Meanwhile each step in method description or action can also can be aobvious and easy according to those skilled in the art institute
The mode carry out order exchange or adjustment seen.Therefore, the various orders in specification and drawings are intended merely to clearly describe a certain
A embodiment is not meant to be necessary order, and wherein some sequentially must comply with unless otherwise indicated.
Embodiment one：
As shown in Figure 1, the U.S. face method of mobile terminal provided by the invention, includes the following steps：
S10, picture obtaining step：Obtain the picture of camera shooting.The picture of the camera shooting can be mobile terminal
Camera shooting picture or other cameras shooting and be stored in the picture in mobile terminal.The mobile terminal can
To be equipment that mobile phone, tablet computer, camera, intelligent wearable equipment etc. have camera (camera) and image-capable.
The present embodiment is illustrated by taking mobile phone as an example.
S20, picture U.S. face step：Using the center of the picture as starting point, the picture is stretched out along first straight line,
It is stretched out along second straight line, edge of the stretch range from the center of picture to picture is progressively incremented by；The first straight line and
Two straight line intersections are in the center of picture.The picture is stretched, namely the image on picture is stretched.This implementation
In example, the first straight line and second straight line are respectively two diagonal of the picture.
Picture U.S. face step specifically includes：
The picture is divided into M (row) × a identical grids of N (row), as shown in Figure 2.The purpose of grid division be for
Convenient for stretching, the stretching of picture is the stretching carried out using grid as unit.
Using the center C of the picture as starting point, the picture is diagonally stretched out, i.e., is drawn to four angles of picture
It stretches (shown in Fig. 2 arrows).The present embodiment reacts stretch range with stretching ratio.The multiplying power of grid residing for the C of center is minimum, leads to
It is often 1 (not stretching).Grid stretching ratio residing for four angles is maximum, stretching ratio value can preset or according to
Depending on the multiplying power of family input, it is preferred that be 1.2 times.On the diagonal, from residing for grid to outermost angle residing for the C of center
The stretching ratio of grid progressively be incremented by (linear increment), therefore on two diagonal of picture all grids stretching ratio it has been determined that
(illustrated as shown in Figure 3 by taking a corner as an example).For a certain grid on diagonal, stretching ratio and be expert at and
Other grids on row are identical, and the stretching ratio of all grids has determined that as a result,.So as to carry out integrally stretching.To grid
It is stretched, is specifically included：The diagonal amplification stretching ratio parallel or substantially parallel with draw direction, and another diagonal is protected
Hold it is constant, so as to by rectangle or square grid stretching assume diamond in shape.As it can be seen that when picture stretches and after stretching, picture
The length of two central axes remains unchanged.Effect after stretching is as shown in Figure 3.The value of the M and N is integer, and numerical value is bigger
Mistake between grid gets over nature.Preferably, M and N is greater than or equal to 8, M=N, the length-width ratio of grid and the length-width ratio phase of picture
Together.
This method principle is similar to carries out " inverse operation " for fish eye lens, can be by anamorphose caused by single-lens imaging
Substantially the image that human eye is seen is reverted to.Artwork is inwardly stretched with 1.2 times of equal proportion amplifications, but center C is remained unchanged.
It is so to take on situation about " distorting " inwardly.By this image procossing, the area shared by the image in medium position
Become smaller than, visually seem small, the amplitude of straight line distortion is also smaller.This method is especially suitable for shining into Hang Chu to self-timer
Reason, it is close from the self-timer person in the face-image and mirror taken pictures that treated, and photo is high to the reduction degree of personage.
Moreover, depending on maximum tension multiplying power (stretching ratio of corner grid) can be by the input of user, maximum tension times
Rate is bigger, distortion it is more severe, maximum tension multiplying power is smaller, distortion it is smaller.Closer to the grid of optical axis center C, before processing
Rear its area is than more leveling off to 1, and further away from the grid of optical axis center C, its area before and after the processing is than being more more than 1.
From the effect of Fig. 2 and Fig. 3, the effect of this method performance and the function of the existing thin face of U.S. face have following area
Not：1st, the intensity for reversing the effect of picture will not be very big, simply slightly does and distorts, reduces effect seen by person as possible.
2nd, the function of existing thin face is to achieve the effect that thin face for " sharpening " face, is very easy to distortion.And the skill of this method
Art is then that the impression for the observer for making viewing picture effect as much as possible is similar with the effect for seeing true man and little or nothing
Ground beautifies, and achievees the purpose that " micro- U.S.'s face ".This method treated picture, it is more remote apart from optical axis in picture centered on optical axis,
Distortion it is bigger, the object in center picture is allowed to seem smaller.
S30, step is cut：Picture after stretching is cut by the size before stretching, the center of picture remains unchanged,
Obtain the picture after U.S. face.The dimension of picture after U.S. face has only been carried out at stretching image with being remained unchanged before U.S. face as a result,
Reason.
In other embodiments, the relation between the first straight line and second straight line can not be diagonal, but phase
Mutually vertical, specific drawing process is as in the first embodiment, this will not be repeated here.
Embodiment two：
Based on the U.S. face method that above-described embodiment provides, the present embodiment provides a kind of U.S. face system of mobile terminal, such as Fig. 4
It is shown, including：Picture U.S. face module 10 and cutting module 20.
Picture U.S. face module 10, for obtaining the picture of camera shooting；Using the center of the picture as starting point, by institute
It states picture to stretch out along first straight line, stretch out along second straight line, edge of the stretch range from the center of picture to picture
Progressively it is incremented by；The first straight line and second straight line intersect at the center of picture.The picture is stretched namely to figure
The image of on piece is stretched.In the present embodiment, the first straight line and second straight line are respectively two of the picture diagonal
Line.
Picture U.S. face module 10 is specifically used for：
The picture is divided into M (row) × a identical grids of N (row), as shown in Figure 2.The purpose of grid division be for
Convenient for stretching, the stretching of picture is the stretching carried out using grid as unit.
Using the center C of the picture as starting point, the picture is diagonally stretched out, i.e., is drawn to four angles of picture
It stretches (shown in Fig. 2 arrows).The present embodiment reacts stretch range with stretching ratio.The multiplying power of grid residing for the C of center is minimum, leads to
It is often 1 (not stretching).Grid stretching ratio residing for four angles is maximum, stretching ratio value can preset or according to
Depending on the multiplying power of family input, it is preferred that be 1.2 times.On the diagonal, from residing for grid to outermost angle residing for the C of center
The stretching ratio of grid progressively be incremented by (linear increment), therefore on two diagonal of picture all grids stretching ratio it has been determined that
(illustrated as shown in Figure 3 by taking a corner as an example).For a certain grid on diagonal, stretching ratio and be expert at and
Other grids on row are identical, and the stretching ratio of all grids has determined that as a result,.So as to carry out integrally stretching.To grid
It is stretched, is specifically included：The diagonal amplification stretching ratio parallel or substantially parallel with draw direction, and another diagonal is protected
Hold it is constant, so as to by rectangle or square grid stretching assume diamond in shape.As it can be seen that when picture stretches and after stretching, picture
The length of two central axes remains unchanged.Effect after stretching is as shown in Figure 3.The value of the M and N is integer, and numerical value is bigger
Mistake between grid gets over nature.Preferably, M and N is greater than or equal to 8, M=N, the length-width ratio of grid and the length-width ratio phase of picture
Together.
Depending on maximum tension multiplying power (stretching ratio of corner grid) can be by the input of user, maximum tension multiplying power is got over
Greatly, distortion is more severe, and maximum tension multiplying power is smaller, distortion it is smaller.Closer to the grid of optical axis center C, before and after the processing
Its area is than more leveling off to 1, and further away from the grid of optical axis center C, its area before and after the processing is than being more more than 1.
The cutting module 20, for the picture after stretching to be cut by the size before stretching, the center of picture is protected
It holds constant, obtains the picture after U.S. face.The dimension of picture after U.S. face only carries out image with being remained unchanged before U.S. face as a result,
Stretch processing.
In other embodiments, the relation between the first straight line and second straight line can not be diagonal, but phase
Mutually vertical, specific drawing process is with embodiment two, and this will not be repeated here.
As it can be seen that the principle of the system is similar to carries out " inverse operation " for fish eye lens, it can will be caused by single-lens imaging
Anamorphose reverts to the image that human eye is seen substantially.Artwork is inwardly stretched with 1.2 times of equal proportion amplifications, but center C
It remains unchanged.It is so to take on situation about " distorting " inwardly.By this image procossing, the image institute in medium position
The area accounted for becomes smaller than, visually seems small, and the amplitude of straight line distortion is also smaller.The system is especially suitable for taking pictures certainly
It is handled, it is close from the self-timer person in the face-image and mirror taken pictures that treated, and photo is to the reduction degree of personage
It is high.
Embodiment three：
The present embodiment provides a kind of mobile terminal, as shown in figure 5, including：Memory 300, processor 400,100 He of camera
Touch Screen 200.The present embodiment is illustrated by mobile phone of mobile terminal.
The camera 100 is camera, for shooting photo.
The Touch Screen 200 is for the photo of display shooting and reception maximum tension multiplying power input by user.
The memory 300, has program stored therein, and described program can be performed to realize such as embodiment one by processor 400
Described in method；It can be the memory of mobile phone.
Processor 400, for performing the program being stored in memory 300.
Specifically, the photo is pulled outwardly by the processor 400 using the center of the photo as starting point along first straight line
It stretches, stretched out along second straight line, edge of the stretch range from the center of photo to photo is progressively incremented by；The first straight line and
Second straight line intersects at the center of photo.The processor 400 is cut the photo after stretching by the size before stretching, is shone
The center of piece remains unchanged, and obtains the photo after U.S. face.
The processor 400 is specifically used for：
The photo is divided into M (row) × a identical grids of N (row), as shown in Figure 2.The purpose of grid division be for
Convenient for stretching, the stretching of photo is the stretching carried out using grid as unit.
Using the center C of the photo as starting point, the photo is diagonally stretched out, i.e., is drawn to four angles of photo
It stretches (shown in Fig. 2 arrows).The present embodiment reacts stretch range with stretching ratio.The multiplying power of grid residing for the C of center is minimum, leads to
It is often 1 (not stretching).Grid stretching ratio residing for four angles is maximum, and stretching ratio value can preset or according to tactile
Depending on the multiplying power input by user that control screen 200 receives, it is preferred that be 1.2 times.On the diagonal, from grid residing for the C of center
Stretching ratio to the grid residing for outermost angle is progressively incremented by (linear increment), therefore all grids on two diagonal of photo
Stretching ratio it has been determined that as shown in Figure 3 (being illustrated by taking a corner as an example).For a certain grid on diagonal,
Stretching ratio is identical with other grids in the row and column of place, and the stretching ratio of all grids has determined that as a result,.So as into
Row integrally stretching.Grid is stretched, is specifically included：The diagonal amplification parallel or substantially parallel with draw direction stretches again
Rate, and another diagonal remains unchanged, so as to which rectangle or the stretching of square grid are assumed diamond in shape.As it can be seen that when photo stretches
And after stretching, the length of two central axes of photo remains unchanged.Effect after stretching is as shown in Figure 3.The M's and N takes
It is worth for integer, the mistake that numerical value gets over big net compartment gets over nature.Preferably, M and N is greater than or equal to 8, M=N, the length-width ratio of grid
It is identical with the length-width ratio of photo.
It will be understood by those skilled in the art that all or part of function of various method and systems can in the above embodiment
It realizes, can also be realized by way of computer program in a manner of by hardware.When whole in the above embodiment or portion
When point function is realized by way of computer program, which can be stored in a computer readable storage medium, storage
Medium can include：Read-only memory, random access memory, disk, CD, hard disk etc. pass through computer (such as computer disposal
Device) program is performed to realize above-mentioned function.In addition, working as all or part of function in the above embodiment passes through computer program
Mode when realizing, which can also be stored in server, another computer, disk, CD, flash disk or mobile hard disk etc.
In storage medium, by download or copying and saving into the readable storage medium storing program for executing of local device or to the system of local device into
Row version updating, when performing the program in readable storage medium storing program for executing by processor, you can realize in the above embodiment all
Or partial function.
Use above specific case is illustrated the present invention, is only intended to help to understand the present invention, not limiting
The system present invention.For those skilled in the art, thought according to the invention can also be made several simple
It deduces, deform or replaces.
Claims (10)
1. a kind of U.S. face method of mobile terminal, which is characterized in that include the following steps：
Picture obtaining step：Obtain the picture of camera shooting；
Picture U.S. face step：Using the center of the picture as starting point, the picture along first straight line is stretched out, is straight along second
Line stretches out, and edge of the stretch range from the center of picture to picture is progressively incremented by；The first straight line and second straight line phase
Meet at the center of picture.
2. the U.S. face method of mobile terminal according to claim 1, which is characterized in that after picture U.S. face step,
Further include following steps：
Cut step：Picture after stretching by the size before stretching is cut, obtains the picture after U.S. face.
3. the U.S. face method of mobile terminal according to claim 1, which is characterized in that the first straight line and second straight line
Two diagonal of respectively described picture.
4. the U.S. face method of mobile terminal according to claim 3, which is characterized in that when picture stretches,
The length of two central axes of picture remains unchanged.
5. a kind of U.S. face system of mobile terminal, which is characterized in that including：
Picture U.S. face module, for obtaining the picture of camera shooting；Using the center of the picture as starting point, by the picture along
One straight line is stretched out, stretched out along second straight line, and edge of the stretch range from the center of picture to picture is progressively incremented by；Institute
It states first straight line and second straight line intersects at the center of picture.
6. the U.S. face system of mobile terminal according to claim 5, which is characterized in that further include：
Module is cut, for the picture after stretching to be cut by the size before stretching, obtains the picture after U.S. face.
7. the U.S. face system of mobile terminal according to claim 5, which is characterized in that the first straight line and second straight line
Two diagonal of respectively described picture.
8. the U.S. face system of mobile terminal according to claim 7, which is characterized in that when picture stretches,
The length of two central axes of picture remains unchanged.
9. a kind of mobile terminal, which is characterized in that including：
Memory, for storing program；
Processor performs the program of the memory storage to realize as any one of claim 1-4 for passing through
Method.
10. a kind of computer readable storage medium, which is characterized in that including program, described program can be executed by processor with
Realize the method as any one of claim 1-4.
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| CN201711318652.XA CN108062740A (en) | 2017-12-12 | 2017-12-12 | A kind of mobile terminal and its U.S. face method and system |
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| CN201711318652.XA CN108062740A (en) | 2017-12-12 | 2017-12-12 | A kind of mobile terminal and its U.S. face method and system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108765274A (en) * | 2018-05-31 | 2018-11-06 | 北京市商汤科技开发有限公司 | A kind of image processing method, device and computer storage media |
| CN108830784A (en) * | 2018-05-31 | 2018-11-16 | 北京市商汤科技开发有限公司 | A kind of image processing method, device and computer storage medium |
| CN109146808A (en) * | 2018-08-01 | 2019-01-04 | 成都品果科技有限公司 | A kind of portrait U.S. type method and system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105678251A (en) * | 2015-12-31 | 2016-06-15 | Tcl海外电子（惠州）有限公司 | Face image processing method and device |
-
2017
- 2017-12-12 CN CN201711318652.XA patent/CN108062740A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105678251A (en) * | 2015-12-31 | 2016-06-15 | Tcl海外电子（惠州）有限公司 | Face image processing method and device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108765274A (en) * | 2018-05-31 | 2018-11-06 | 北京市商汤科技开发有限公司 | A kind of image processing method, device and computer storage media |
| CN108830784A (en) * | 2018-05-31 | 2018-11-16 | 北京市商汤科技开发有限公司 | A kind of image processing method, device and computer storage medium |
| CN109146808A (en) * | 2018-08-01 | 2019-01-04 | 成都品果科技有限公司 | A kind of portrait U.S. type method and system |
| CN109146808B (en) * | 2018-08-01 | 2022-02-18 | 成都品果科技有限公司 | Portrait beauty method and system |
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