CN107509115A - A kind of method and device for obtaining live middle Wonderful time picture of playing - Google Patents
A kind of method and device for obtaining live middle Wonderful time picture of playing Download PDFInfo
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- CN107509115A CN107509115A CN201710757967.8A CN201710757967A CN107509115A CN 107509115 A CN107509115 A CN 107509115A CN 201710757967 A CN201710757967 A CN 201710757967A CN 107509115 A CN107509115 A CN 107509115A
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- picture
- target photo
- wonderful time
- value
- wonderful
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/478—Supplemental services, e.g. displaying phone caller identification, shopping application
- H04N21/4788—Supplemental services, e.g. displaying phone caller identification, shopping application communicating with other users, e.g. chatting
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F18/00—Pattern recognition
- G06F18/20—Analysing
- G06F18/22—Matching criteria, e.g. proximity measures
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/478—Supplemental services, e.g. displaying phone caller identification, shopping application
- H04N21/4781—Games
Abstract
The present invention provides a kind of method and device for obtaining live middle Wonderful time picture of playing, and methods described includes：S1, obtain and report position of the Target Photo of word in the game is live from the Wonderful time that includes for live middle acquisition of playing in advance, picture is contrasted from the position acquisition of the live middle present frame of game；S2, use the cryptographic Hash for perceiving the hash algorithm acquisition Target Photo and contrast picture；S3, if the distance between cryptographic Hash of the Target Photo and contrast picture is less than the first predetermined threshold value, using the present frame where the contrast picture as Wonderful time picture.One aspect of the present invention, realize the real-time acquisition of Wonderful time picture；On the other hand, only it is identified with the Target Photo that word is reported comprising Wonderful time, reduces the influence that background identifies to Wonderful time picture, improves the precision of Wonderful time picture acquisition.
Description
Technical field
The present invention relates to live field, more particularly, to a kind of method for obtaining live middle Wonderful time picture of playing
And device.
Background technology
With the development of network interaction platform, increasing user is exchanged by logging in network interaction platform.Its
In, network direct broadcasting is the application being popular in users very much.The network direct broadcasting be divided into game it is live, amusement it is live and education
It is live etc..
In game is live, main broadcaster's live game, such as the game of king's honor, the user into main broadcaster's direct broadcasting room watches
Game.User is when viewing game is live, it is often desired to Wonderful time picture is preserved, as continuous several times beat opponents, are preserving
The picture such as repeatedly beaten opponents in the case of unbeaten.It is described preserve Wonderful time picture premise be obtain game it is live in it is excellent
Moment picture.And in the prior art without the method for obtaining live middle Wonderful time picture of playing.
The content of the invention
It is above-mentioned in the prior art without the problem of obtaining game live middle Wonderful time picture method or at least to overcome
Partly solve the above problems, the invention provides a kind of method and device for obtaining live middle Wonderful time picture of playing.
According to the first aspect of the invention, there is provided a kind of method for obtaining live middle Wonderful time picture of playing, including：
S1, obtain and report the Target Photo of word in the game from live middle acquisition of playing comprising Wonderful time in advance
Position in live, picture is contrasted from the position acquisition of the live middle present frame of game；
S2, use the cryptographic Hash for perceiving the hash algorithm acquisition Target Photo and contrast picture；
S3, if the distance between cryptographic Hash of the Target Photo and contrast picture is less than the first predetermined threshold value, by institute
State contrast picture where present frame as Wonderful time picture.
Specifically, also include between the step S1 and S2：
If Wonderful time reports the average gray value of word more than background in the Target Photo in the Target Photo
Average gray value, then the gray value of the pixel that gray scale is less than the second predetermined threshold value in the Target Photo and control picture is subtracted
First pre-set constant value or using the second pre-set constant value as Target Photo and right described in the Target Photo and control picture
Gray scale is less than the gray value of the pixel of the second predetermined threshold value in photograph and picture, and second pre-set constant value is less than the flat of the background
Equal gray value；Or
If Wonderful time reports the average gray value of word less than background in the Target Photo in the Target Photo
Average gray value, then the gray value of the pixel that gray scale is more than the 3rd predetermined threshold value in the Target Photo and control picture is added
3rd default constant value number is preset the 4th pre-set constant value as gray scale in the Target Photo and control picture more than the 3rd
The gray value of the pixel of threshold value, the 4th pre-set constant value are more than the average gray value of the background.
Specifically, the step of contrasting picture from the position acquisition of the live middle present frame of game in the step S1
Also include：
Every preset duration picture is contrasted from the position acquisition of the live middle present frame of game.
Specifically, the step S2 is specifically included：
Reduce the Target Photo and contrast the size of picture；
Greyscale image transitions by the Target Photo after diminution and contrast picture are 64 grades of gray level images；
64 grades of gray level images of the Target Photo and contrast picture are subjected to discrete cosine transform；
Select formed objects respectively from the matrix of two 64 grades of gray level images after the discrete cosine transform
Submatrix；
The average value of two submatrixs is calculated respectively；
For each submatrix, the cryptographic Hash of the data for the average value that the submatrix is more than or equal in the submatrix is set
1 is set to, the cryptographic Hash less than the data of the average value of the submatrix is arranged to 0.
Specifically, the step S3 is specifically included：
Obtain the number that the cryptographic Hash of each same position of the Target Photo with contrasting picture differs；
If the number is less than first predetermined threshold value, using it is described contrast picture where present frame as it is excellent when
Portray face.
Specifically, also include after the step S3：
The time shown according to the live middle Wonderful time picture of game, obtain the 4th predetermined threshold value；
If being more than the 4th predetermined threshold value with the time interval that last time Wonderful time picture reports, when will be described excellent
The face of portraying reports.
Specifically, also include before the step S1：
Multiple Target Photos for including Wonderful time report word from live middle acquisition of playing, every Target Photo include one
Kind Wonderful time reports word；
Correspondingly, also include after the step S3：
According to the step S1 to S3, Wonderful time picture corresponding to each Target Photo is obtained.
According to the second aspect of the invention, there is provided a kind of device for obtaining live middle Wonderful time picture of playing, including：
First acquisition unit, for obtaining in advance from the target that word is reported comprising Wonderful time for live middle acquisition of playing
Position of the picture in the game is live, picture is contrasted from the position acquisition of the live middle present frame of game；
Second acquisition unit, for using the cryptographic Hash for perceiving the hash algorithm acquisition Target Photo and contrast picture；
Determining unit, it is less than the first default threshold for the distance between the cryptographic Hash of the Target Photo and contrast picture
During value, using the present frame where the contrast picture as Wonderful time picture.
According to the third aspect of the invention we, there is provided a kind of equipment for obtaining live middle Wonderful time picture of playing, including：
At least one processor, at least one memory and bus；Wherein,
The processor and memory complete mutual communication by the bus；
The memory storage has and by the programmed instruction of the computing device, the processor described program can be called to refer to
Order is able to carry out method as described before.
According to the fourth aspect of the invention, there is provided a kind of non-transient computer readable storage medium storing program for executing, for storing such as preceding institute
State the computer program of method.
The present invention provides a kind of method and device for obtaining live middle Wonderful time picture of playing, and this method passes through according to need
The Wonderful time picture to be obtained, obtain corresponding in Target Photo and net cast present frame that word is reported comprising Wonderful time
The contrast picture of Target Photo position, will be current where the cryptographic Hash contrast picture similar to the cryptographic Hash of the Target Photo
Frame is as Wonderful time picture, on the one hand, realize the real-time acquisition of Wonderful time picture, on the other hand, only with comprising it is excellent when
The Target Photo for carving report word is identified, and the influence that background identifies to Wonderful time picture is reduced, when improving excellent
Portray the precision of face acquisition.
Brief description of the drawings
Fig. 1 is the method overall flow signal provided in an embodiment of the present invention for obtaining live middle Wonderful time picture of playing
Figure；
Fig. 2 is Wonderful time picture in the method provided in an embodiment of the present invention for obtaining live middle Wonderful time picture of playing
Schematic diagram；
Fig. 3 is the device overall structure signal provided in an embodiment of the present invention for obtaining live middle Wonderful time picture of playing
Figure；
Fig. 4 is the equipment overall structure signal provided in an embodiment of the present invention for obtaining live middle Wonderful time picture of playing
Figure.
Embodiment
With reference to the accompanying drawings and examples, the embodiment of the present invention is described in further detail.Implement below
Example is used to illustrate the present invention, but is not limited to the scope of the present invention.
A kind of method for obtaining live middle Wonderful time picture of playing is provided in one embodiment of the invention, and Fig. 1 is
The method overall flow schematic diagram provided in an embodiment of the present invention for obtaining live middle Wonderful time picture of playing, this method include：
S1, obtain and report the Target Photo of word in the game is live from the Wonderful time that includes for live middle acquisition of playing in advance
Position, picture is contrasted from the position acquisition of the live middle present frame of game；S2, using described in perception hash algorithm acquisition
The cryptographic Hash of Target Photo and contrast picture；S3, if the distance between cryptographic Hash of the Target Photo and contrast picture is less than
First predetermined threshold value, then using the present frame where the contrast picture as Wonderful time picture.
Specifically, in S1, it is the report word shown in Wonderful time picture that the Wonderful time, which reports word, such as
" all-conquering ", " four companies are free from worldly cares ", " two double hits are broken ", " three even decide the issue of the battle " and " five companies are peerless " etc..It is live from the game in advance
In Wonderful time picture in obtain a Target Photo.In the Target Photo word is reported comprising a kind of Wonderful time.Institute
Stating Target Photo includes Wonderful time report word and background.In order to reduce the influence of background, the Target Photo of acquisition
Size should be as small as possible.Obtain position of the Target Photo in game is live.Because the Target Photo is rectangle, institute
State the position diagonal coordinate representation of the Target Photo of Target Photo.Described can be diagonally the upper left corner and the lower right corner,
Can be the lower left corner and the upper right corner.Picture is contrasted from the position acquisition of the live middle present frame of game.The comparison diagram
Position of the position of piece in the current frame with the Target Photo in the game live page is identical, and size is also identical.S2
In, the perception hash algorithm is a kind of relatively hash algorithm, for generating one group of fingerprint according to the feature of picture.Use perception
Hash algorithm obtains the Target Photo and contrasts the fingerprint of picture respectively, and the fingerprint is cryptographic Hash.In S3, described in acquisition
The distance between Target Photo and contrast picture, the distance can be Hamming distance, but the present embodiment is not limited to such a distance.
Judge whether the distance is less than the first predetermined threshold value.If the distance is less than the first predetermined threshold value, by the contrast picture
The present frame at place is as Wonderful time picture.The Wonderful time picture for include Wonderful time report word frame, such as Fig. 2
It is shown.The game that this method can apply in Android platform is live, but this implementation is not limited only to such a platform.
The present embodiment obtains the target that word is reported comprising Wonderful time by the Wonderful time picture obtained as needed
The contrast picture of Target Photo position is corresponded in picture and net cast present frame, by cryptographic Hash and the Hash of the Target Photo
It is worth the present frame where similar contrast picture as Wonderful time picture, on the one hand, realize that the real-time of Wonderful time picture obtains
Take, on the other hand, be only identified with the Target Photo that word is reported comprising Wonderful time, reduce background and Wonderful time is drawn
The influence of face identification, improve the precision of Wonderful time picture acquisition.
On the basis of above-described embodiment, also include between step S1 described in the present embodiment and S2：If the target figure
Wonderful time reports average gray value of the average gray value more than background in the Target Photo of word in piece, then by the mesh
Mark on a map and piece and compare the gray value of the pixel that gray scale is less than the second predetermined threshold value in picture and subtract the first pre-set constant value or by the
Two pre-set constant values are less than second as gray scale in Target Photo described in the Target Photo and control picture and control picture
The gray value of the pixel of predetermined threshold value, second pre-set constant value are less than the average gray value of the background；It is or if described
Wonderful time reports average gray value of the average gray value less than background in the Target Photo of word in Target Photo, then will
Gray scale is more than the gray value of the pixel of the 3rd predetermined threshold value plus the 3rd default constant value number in the Target Photo and control picture
Or it is more than the ash of the pixel of the 3rd predetermined threshold value using the 4th pre-set constant value as gray scale in the Target Photo and control picture
Angle value, the 4th pre-set constant value are more than the average gray value of the background.
Specifically, due to Wonderful time report word have it is translucent in the case of, influenceed by background, identify Wonderful time
The precision of picture reduces.In order to solve this problem, the Target Photo and contrast picture can be pre-processed.It is described pre-
Processing can specifically judge whether the average gray value of Wonderful time report word in the Target Photo is big according to priori
The average gray value of background in the Target Photo.If Wonderful time reports the average gray value of word in the Target Photo
More than the average gray value of background in the Target Photo, then it is pre- gray scale in the Target Photo and control picture to be less than second
If the gray value of the pixel of threshold value subtracts the first pre-set constant value or regard the second pre-set constant value as the Target Photo and right
Gray scale is less than the gray value of the pixel of the second predetermined threshold value in photograph and picture.Second pre-set constant value is less than the flat of the background
Equal gray value.If Wonderful time reports the average gray value of word less than background in the Target Photo in the Target Photo
Average gray value, then the gray value of the pixel that gray scale is more than the 3rd predetermined threshold value in the Target Photo and control picture is added
3rd default constant value number is preset the 4th pre-set constant value as gray scale in the Target Photo and control picture more than the 3rd
The gray value of the pixel of threshold value, the 4th pre-set constant value are more than the average gray value of the background.
Wonderful time reports the average gray value of word more than background in the Target Photo in the Target Photo
During average gray value, the Opengl codes pre-processed to the Target Photo and contrast picture are：
if(c.r*0.3+c.g*0.59+c.b*0.11<0.45) n "+" gl_FragColor.xyz=vec3 (0.067,
0.082,0.129)}\n"；
Wherein, c is the Target Photo or contrast picture, and described r, g and b are respectively the Target Photo or contrast picture
Tri- passages of R, G and B value, 0.45 is second predetermined threshold value, and vec3 (0.067,0.082,0.129) is gray scale second
RGB vectors corresponding to pre-set constant value.
When the present embodiment is more than the average gray value of background by reporting the average gray value of word in the Wonderful time
The gray scale of the background is reduced, is increased when the average gray value that the Wonderful time reports word is less than the average gray value of background
Add the gray scale of the background, report word and background so as to distinguish the process moment more obviously, reduce the influence of background, improve
The precision that Wonderful time picture obtains.
On the basis of above-described embodiment, from the institute of the live middle present frame of game in step S1 described in the present embodiment
The step of stating position acquisition contrast picture also includes：Obtained every preset duration from the position of the live middle present frame of game
Take contrast picture.
Specifically, the present frame during the acquisition game is live, generally frame per second is 25 frames or so during game is live.Such as
It all frames during the fruit acquisition game is live, can influence to obtain the efficiency for live middle Wonderful time picture of playing, and waste and provide
Source.Further, since a Wonderful time picture can show a period of time, the repetition to a Wonderful time picture is caused to obtain.
In order to improve the precision for obtaining Wonderful time picture, it is thus necessary to determine that the preset duration.Assuming that the preset duration is m, unit
For millisecond, Wonderful time is at least shown 1 second.Assuming that the probability that Wonderful time picture is identified in a frame is 50%, 50% is low
The probability estimated, the probability of frame identification can be determined according to measured result.According to Probability one Wonderful time picture of calculating
Identification probability is 1-50%(1000/m).For ensure the probability of Wonderful time picture identification reach 98% and more than, m values are
150 or so.The time for carrying out Wonderful time picture identification every time is obtained, when present frame and the identification of last Wonderful time picture
When time interval reaches preset duration m, the identification of the Wonderful time picture of present frame is just carried out, otherwise skips over present frame.
The present embodiment every the position acquisition of the preset duration from the live middle present frame of game by contrasting picture
Reduce the number of the repetition identification of same Wonderful time picture, reduce the waste of resource.
On the basis of above-described embodiment, step S2 described in the present embodiment specifically includes：Reduce the Target Photo and
Contrast the size of picture；Greyscale image transitions by the Target Photo after diminution and contrast picture are 64 grades of gray level images；
64 grades of gray level images of the Target Photo and contrast picture are subjected to discrete cosine transform；After the discrete cosine transform
The submatrix of a formed objects is selected in the matrix of two 64 grades of gray level images respectively；Two submatrixs are calculated respectively
Average value；For each submatrix, the cryptographic Hash of the data for the average value that the submatrix is more than or equal in the submatrix is set
1 is set to, the cryptographic Hash less than the data of the average value of the submatrix is arranged to 0.
Specifically, reduce the Target Photo and contrast the size of picture, so as to remove the Target Photo and comparison diagram
High frequency and details in piece, retain structure light and shade.Target Photo and contrast picture narrow down to 8*8 size respectively as will be described,
64 pixels altogether.Greyscale image transitions by the Target Photo after diminution and contrast picture are 64 grades of gray level images, i.e.,
The Target Photo and contrast picture after conversion only have 64 kinds of gray scale colors respectively.By the Target Photo of 64 grades of gray scales and
Contrast picture and carry out discrete cosine transform, such as use 32*32 discrete cosine transform.Target after the discrete cosine transform
The submatrix of a formed objects is selected in the matrix of picture and contrast picture respectively, such as from the target figure after discrete cosine transform
The 8*8 submatrixs in the upper left corner are distinguished in the matrix of piece and contrast picture, because this part is the Target Photo and contrast picture
In low-limit frequency.The average value of two submatrixs is calculated respectively, there are 64 values in the submatrix as described in calculating is each
Average value.For each submatrix, the cryptographic Hash of the data for the average value that the submatrix is more than or equal in the submatrix is set
1 is set to, the cryptographic Hash less than the data of the average value of the submatrix is arranged to 0.As long as the Target Photo and contrast picture
Overall structure is constant, and the cryptographic Hash of the Target Photo and contrast picture can avoid gamma correction or color histogram with regard to constant
Figure is adjusted the influence brought.The order of the cryptographic Hash combination of the Target Photo or contrast picture is inessential, but the target
The cryptographic Hash of picture and contrast picture needs to use same order.
The cryptographic Hash of the Target Photo and contrast picture is obtained in this implementation by using perception hash algorithm, according to
The distance between cryptographic Hash of the Target Photo and contrast picture determines that the live middle Wonderful time picture of the game makees place mat.
On the basis of above-described embodiment, step S3 described in the present embodiment specifically includes：Obtain the Target Photo and
Contrast the number that the cryptographic Hash of each same position of picture differs；, will if the number is less than first predetermined threshold value
Present frame where the contrast picture is as Wonderful time picture.
Specifically, the Target Photo is identical with the number of numerical value in the cryptographic Hash of contrast picture.By the Target Photo
Cryptographic Hash in each position numerical value compared with the numerical value of correspondence position in the contrast picture, in acquisition comparative result
The number that the numerical value of each correspondence position differs in cryptographic Hash in the cryptographic Hash of the Target Photo with contrasting picture.It is if described
Number is less than first predetermined threshold value, then using the present frame where the contrast picture as Wonderful time picture.This implementation
Example by obtaining the Target Photo and contrasting the distance between cryptographic Hash of picture, by less than first predetermined threshold value away from
From the present frame where corresponding contrast picture as Wonderful time picture.
On the basis of above-described embodiment, also include after step S3 described in the present embodiment：It is live according to the game
Middle Wonderful time reports the time of text importing, obtains the 4th predetermined threshold value；If the time reported with last time Wonderful time picture
Interval is more than the 4th predetermined threshold value, then reports the Wonderful time picture.
Specifically, because a Wonderful time picture may be repeatedly identified in it shows the time, in order to avoid same
One Wonderful time picture is repeatedly reported within its display time, it is necessary to record the time reported every time.It is straight according to the game
The display time that middle Wonderful time broadcasts picture is broadcast, obtains the 4th predetermined threshold value.The display time is longer, the described 4th default threshold
Value is bigger.If being more than the 4th predetermined threshold value with the time interval that last time Wonderful time picture reports, when will be described excellent
The face of portraying reports.Described report can be to preserve screenshotss or prompted in a manner of special efficacy.By reporting in the present embodiment
Mode the Wonderful time picture of acquisition is informed into user, there is provided the experience of user.
On the basis of above-described embodiment, also include before the step S1：When including excellent from live middle acquisition of playing
Multiple Target Photos for reporting word are carved, every Target Photo includes a kind of Wonderful time and reports word；Correspondingly, the step
Also include after S3：According to the step S1 to S3, Wonderful time picture corresponding to each Target Photo is obtained.
Specifically, multiple Target Photos for including Wonderful time report word from live middle acquisition of playing, every target figure
Piece includes a kind of Wonderful time and reports word, the Wonderful time report word can be " all-conquering ", " four connect free from worldly cares ",
" two double hits are broken ", " three even decide the issue of the battle " or " five companies are peerless " etc..Each Target Photo is obtained according to the step S1 to S3 respectively
Corresponding contrast picture, according to the distance between cryptographic Hash of each Target Photo and corresponding contrast picture, described in acquisition
Wonderful time picture corresponding to each Target Photo.
The present embodiment obtains each Target Photo by using the Target Photo that word is reported comprising different Wonderful times
Corresponding Wonderful time picture, so as to get the various Wonderful time pictures in the net cast.The present embodiment is not limited to
The Wonderful time reports the species of word.
A kind of device for obtaining live middle Wonderful time picture of playing, Fig. 3 are provided in another embodiment of the present invention
For the device overall structure diagram provided in an embodiment of the present invention for obtaining live middle Wonderful time picture of playing, the device includes
First acquisition unit 1, second acquisition unit 2 and determining unit 3 are drawn, wherein：
The first acquisition unit 1 is used to obtain reports word from live middle acquisition of playing comprising Wonderful time in advance
Position of the Target Photo in the game is live, picture is contrasted from the position acquisition of the live middle present frame of game；
The second acquisition unit 2 is used for using the cryptographic Hash for perceiving the hash algorithm acquisition Target Photo and contrast picture；It is described
, will when the distance that determining unit 3 is used in the Target Photo and contrasted between the cryptographic Hash of picture is less than the first predetermined threshold value
Present frame where the contrast picture is as Wonderful time picture.
Specifically, it is the report word shown in Wonderful time picture that the Wonderful time, which reports word,.Described first
Acquiring unit 1 in advance from it is described game it is live in Wonderful time picture in obtain a Target Photo.In the Target Photo
Word is reported comprising a kind of Wonderful time.The Target Photo includes Wonderful time and reports word and background.In order to reduce background
Influence, the size of the Target Photo of acquisition should be as small as possible.The first acquisition unit 1 obtains the Target Photo
Position in game is live.Because the Target Photo is rectangle, the position of the Target Photo Target Photo pair
The coordinate representation at angle.Described can be diagonally the upper left corner and the lower right corner, or the lower left corner and the upper right corner.Described first obtains
The position acquisition of unit 1 from the live middle present frame of game contrasts picture.The position of the contrast picture in the current frame
The position put with the Target Photo in the game live page is identical, and size is also identical.It is described perception hash algorithm be
One kind relatively hash algorithm, for generating one group of fingerprint according to the feature of picture.The second acquisition unit 2 uses perception Hash
Algorithm obtains the Target Photo and contrasts the fingerprint of picture respectively, and the fingerprint is cryptographic Hash.The determining unit 3 obtains
The Target Photo and contrast the distance between picture, the distance can be Hamming distance, but the present embodiment be not limited to it is such a
Distance.Judge whether the distance is less than the first predetermined threshold value.If the distance is less than the first predetermined threshold value, by the contrast
Present frame where picture is as Wonderful time picture.The Wonderful time picture is the frame that word is reported comprising Wonderful time,
As shown in Figure 2.The game that this method can apply in Android platform is live, but this implementation is not limited only to such a platform.
The present embodiment obtains the target that word is reported comprising Wonderful time by the Wonderful time picture obtained as needed
The contrast picture of Target Photo position is corresponded in picture and net cast present frame, by cryptographic Hash and the Hash of the Target Photo
It is worth the present frame where similar contrast picture as Wonderful time picture, on the one hand, realize that the real-time of Wonderful time picture obtains
Take, on the other hand, be only identified with the Target Photo that word is reported comprising Wonderful time, reduce background and Wonderful time is drawn
The influence of face identification, improve the precision of Wonderful time picture acquisition.
On the basis of above-described embodiment, device described in the present embodiment also includes pretreatment unit, in the mesh
When the average gray value that Wonderful time in piece of marking on a map reports word is more than the average gray value of background in the Target Photo, by institute
State Target Photo and compare picture in gray scale be less than the second predetermined threshold value pixel gray value subtract the first pre-set constant value or
It is less than the second pre-set constant value as gray scale in Target Photo described in the Target Photo and control picture and control picture
The gray value of the pixel of second predetermined threshold value, second pre-set constant value are less than the average gray value of the background；Or
Wonderful time reports average gray value of the average gray value less than background in the Target Photo of word in the Target Photo
When, the gray value that gray scale in the Target Photo and control picture is more than to the pixel of the 3rd predetermined threshold value is default normal plus the 3rd
It is worth number or is more than the pixel of the 3rd predetermined threshold value using the 4th pre-set constant value as gray scale in the Target Photo and control picture
Gray value, the 4th pre-set constant value be more than the background average gray value.
On the basis of above-described embodiment, first acquisition unit is specifically used for described in the present embodiment：Every preset duration
Picture is contrasted from the position acquisition of the live middle present frame of game.
On the basis of above-described embodiment, second acquisition unit is specifically used for described in the present embodiment：Reduce the target
The size of picture and contrast picture；Greyscale image transitions by the Target Photo after diminution and contrast picture are 64 grades of gray scales
Image；The Target Photo of 64 grades of gray scales and contrast picture are subjected to discrete cosine transform；After the discrete cosine transform
Target Photo and contrast picture matrix in select the submatrixs of a formed objects respectively；Two sub- squares are calculated respectively
The average value of battle array；For each submatrix, will in the submatrix more than or equal to the submatrix average value data Hash
Value is arranged to 1, and the cryptographic Hash less than the data of the average value of the submatrix is arranged to 0.
On the basis of above-described embodiment, the 3rd acquiring unit is specifically used for described in the present embodiment：Obtain the target
The number that the cryptographic Hash of picture and each same position of contrast picture differs；If the number is less than the described first default threshold
Value, then using the present frame where the contrast picture as Wonderful time picture.
On the basis of above-described embodiment, device described in the present embodiment also includes working unit, for according to the trip
Play the time that live middle Wonderful time picture is shown, obtain the 4th predetermined threshold value；If with last time Wonderful time picture report when
Between interval be more than the 4th predetermined threshold value, then the Wonderful time picture is reported.
On the basis of above-described embodiment, device described in the present embodiment also includes the 3rd acquiring unit, for from game
Live middle obtain includes multiple Target Photos that Wonderful time reports word, and every Target Photo includes a kind of Wonderful time and reported
Word；The first acquisition unit, second acquisition unit and determining unit are handled multiple described target images, obtain institute
State Wonderful time picture corresponding to each Target Photo.
The present embodiment provides a kind of equipment for obtaining live middle Wonderful time picture of playing, and Fig. 4 carries for the embodiment of the present invention
The equipment overall structure schematic diagram of the live middle Wonderful time picture of acquisition game of confession, the equipment include：At least one processor
41st, at least one memory 42 and bus 43；Wherein,
The processor 41 and memory 42 complete mutual communication by the bus 43；
The memory 42 is stored with the programmed instruction that can be performed by the processor 41, and the processor calls the journey
Sequence instruction is able to carry out the method that above-mentioned each method embodiment is provided, such as including：S1, obtain in advance from play it is live in obtain
What is taken reports position of the Target Photo of word in the game is live comprising Wonderful time, from the game it is live in it is current
The position acquisition contrast picture of frame；S2, use the Hash for perceiving the hash algorithm acquisition Target Photo and contrast picture
Value；S3, if the distance between cryptographic Hash of the Target Photo and contrast picture is less than the first predetermined threshold value, by the contrast
Present frame where picture is as Wonderful time picture.
The present embodiment provides a kind of non-transient computer readable storage medium storing program for executing, the non-transient computer readable storage medium storing program for executing
Computer instruction is stored, the computer instruction makes the computer perform the method that above-mentioned each method embodiment is provided, example
Such as include：S1, obtain and report the Target Photo of word in the game from live middle acquisition of playing comprising Wonderful time in advance
Position in live, picture is contrasted from the position acquisition of the live middle present frame of game；S2, use perception hash algorithm
Obtain the Target Photo and contrast the cryptographic Hash of picture；S3, if between the Target Photo and the cryptographic Hash for contrasting picture
Distance is less than the first predetermined threshold value, then using the present frame where the contrast picture as Wonderful time picture.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above method embodiment can pass through
Programmed instruction related hardware is completed, and foregoing program can be stored in a computer read/write memory medium, the program
Upon execution, the step of execution includes above method embodiment；And foregoing storage medium includes：ROM, RAM, magnetic disc or light
Disk etc. is various can be with the medium of store program codes.
The apparatus embodiments of the live middle Wonderful time picture of acquisition game described above are only schematical, wherein
The unit illustrated as separating component can be or may not be physically separate, to be shown as unit part
It can be or may not be physical location, you can with positioned at a place, or multiple NEs can also be distributed to
On.Some or all of module therein can be selected to realize the purpose of this embodiment scheme according to the actual needs.Ability
Domain those of ordinary skill is not in the case where paying performing creative labour, you can to understand and implement.
Through the above description of the embodiments, those skilled in the art can be understood that each embodiment can
Realized by the mode of software plus required general hardware platform, naturally it is also possible to pass through hardware.Based on such understanding, on
The part that technical scheme substantially in other words contributes to prior art is stated to embody in the form of software product, should
Computer software product can store in a computer-readable storage medium, such as ROM/RAM, magnetic disc, CD, including some fingers
Make to cause a computer equipment (can be personal computer, server, or network equipment etc.) to perform each implementation
Method described in some parts of example or embodiment.
Finally, the present processes are only preferable embodiment, are not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvements made etc., the protection of the present invention should be included in
Within the scope of.
Claims (10)
- A kind of 1. method for obtaining live middle Wonderful time picture of playing, it is characterised in that including：S1, obtain live in the game from the Target Photo that word is reported comprising Wonderful time for live middle acquisition of playing in advance In position, contrast picture from the position acquisition of the live middle present frame of the game；S2, use the cryptographic Hash for perceiving the hash algorithm acquisition Target Photo and contrast picture；S3, will be described right if the distance between cryptographic Hash of the Target Photo and contrast picture is less than the first predetermined threshold value Than the present frame where picture as Wonderful time picture.
- 2. the method according to claim 1 for obtaining live middle Wonderful time picture of playing, it is characterised in that the step Also include between S1 and S2：If Wonderful time reports the average gray value of word and is more than background in the Target Photo and is averaged in the Target Photo Gray value, then the gray value of the pixel that gray scale is less than the second predetermined threshold value in the Target Photo and control picture is subtracted first Second pre-set constant value as the Target Photo and is compareed Target Photo and compares figure described in picture by pre-set constant value Gray scale is less than the gray value of the pixel of the second predetermined threshold value in piece, and second pre-set constant value is less than the average ash of the background Angle value；OrIf Wonderful time reports the average gray value of word and is less than background in the Target Photo and is averaged in the Target Photo Gray value, then the gray value of the pixel that gray scale is more than the 3rd predetermined threshold value in the Target Photo and control picture is added the 3rd The 4th pre-set constant value is more than the 3rd predetermined threshold value by default constant value number Pixel gray value, the 4th pre-set constant value be more than the background average gray value.
- 3. the method according to claim 1 or 2 for obtaining live middle Wonderful time picture of playing, it is characterised in that described The step of contrasting picture from the position acquisition of the live middle present frame of game in step S1 also includes：Every preset duration picture is contrasted from the position acquisition of the live middle present frame of game.
- 4. the method according to claim 1 or 2 for obtaining live middle Wonderful time picture of playing, it is characterised in that described Step S2 is specifically included：Reduce the Target Photo and contrast the size of picture；Greyscale image transitions by the Target Photo after diminution and contrast picture are 64 grades of gray level images；64 grades of gray level images of the Target Photo and contrast picture are subjected to discrete cosine transform；Select the sub- square of a formed objects respectively from the matrix of two 64 grades of gray level images after the discrete cosine transform Battle array；The average value of two submatrixs is calculated respectively；For each submatrix, the cryptographic Hash of the data for the average value that the submatrix is more than or equal in the submatrix is arranged to 1, the cryptographic Hash less than the data of the average value of the submatrix is arranged to 0.
- 5. the method according to claim 1 or 2 for obtaining live middle Wonderful time picture of playing, it is characterised in that described Step S3 is specifically included：Obtain the number that the cryptographic Hash of each same position of the Target Photo with contrasting picture differs；If the number is less than first predetermined threshold value, the present frame where the contrast picture is drawn as Wonderful time Face.
- 6. the method according to claim 1 or 2 for obtaining live middle Wonderful time picture of playing, it is characterised in that described Also include after step S3：The time shown according to the live middle Wonderful time picture of game, obtain the 4th predetermined threshold value；If being more than the 4th predetermined threshold value with the time interval that last time Wonderful time picture reports, the Wonderful time is drawn Face reports.
- 7. the method according to claim 1 or 2 for obtaining live middle Wonderful time picture of playing, it is characterised in that described Also include before step S1：Multiple Target Photos for including Wonderful time report word from live middle acquisition of playing, every Target Photo includes a kind of smart The color moment reports word；Correspondingly, also include after the step S3：According to the step S1 to S3, Wonderful time picture corresponding to each Target Photo is obtained.
- A kind of 8. device for obtaining live middle Wonderful time picture of playing, it is characterised in that including：First acquisition unit, for obtaining in advance from the Target Photo that word is reported comprising Wonderful time for live middle acquisition of playing Position in the game is live, picture is contrasted from the position acquisition of the live middle present frame of game；Second acquisition unit, for using the cryptographic Hash for perceiving the hash algorithm acquisition Target Photo and contrast picture；Determining unit, it is less than the first predetermined threshold value for the distance between the cryptographic Hash of the Target Photo and contrast picture When, using the present frame where the contrast picture as Wonderful time picture.
- A kind of 9. equipment for obtaining live middle Wonderful time picture of playing, it is characterised in that including：At least one processor, at least one memory and bus；Wherein,The processor and memory complete mutual communication by the bus；The memory storage has can be by the programmed instruction of the computing device, and the processor calls described program instruction energy Enough perform the method as described in claim 1 to 7 is any.
- 10. a kind of non-transient computer readable storage medium storing program for executing, it is characterised in that the non-transient computer readable storage medium storing program for executing is deposited Computer instruction is stored up, the computer instruction makes the computer perform the method as described in claim 1 to 7 is any.
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Application publication date: 20171222 |