CN103491315A - Video data processing method, video data processing device and electronic device comprising video data processing device - Google Patents
Video data processing method, video data processing device and electronic device comprising video data processing device Download PDFInfo
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Abstract
The invention provides a video data processing method, a video data processing device and an electronic device comprising the video data processing device. The video data processing method comprises the steps of obtaining video data to be processed, setting a loop executive program to process M data in the video data to be processed, wherein the loop executive program comprises a plurality of loops which perform the same or similar operation on each datum in the M data, setting a loop control variable to define the loop time number in the loop executive program, wherein the loop control variable is set by enabling a stored binary representation value of M to be moved to the low bit by N bits, the loop time number is equal to M/2N after moving is carried out, and the M and the N are integers which are larger than or equal to 1, conducting parallel processing on 2N data to execute the loop executive program in one time of loop operation, and outputting the processed video data. According to the video data processing method, the processing efficiency of the video data and fluency of video effect playing can be greatly improved.
Description
Technical field
The electronic equipment that the present invention relates to a kind of video data handling procedure, video data processing apparatus and comprise this video data processing apparatus.More specifically, the present invention relates to a kind of for video data handling procedure, the video data processing apparatus that obtains special video effect and the electronic equipment that comprises this video data processing apparatus.
Background technology
Video processing typically refers to electronic equipment (for example, smart mobile phone, panel computer, portable computer, Digital Television etc.) and, after by video capture device, gathering video, video is processed to obtain to the video processing procedure of Expected Results.
It is a kind of for obtaining the video data handling procedure of special video effect that special video effect is processed.More existing special video effect processing methods are used SISD single instruction single data mode deal with data, cause the processing speed of video low, treatment effect is undesirable.In addition, more existing special video effect processing methods, owing to adopting more floating-point operation, cause the arithmetic speed of special effect processing low, and special video effect presents not smooth.
Therefore, need badly and a kind ofly can improve video processing speed, improve Video processing efficiency, and improve the fluency that special video effect plays video data handling procedure, install or comprise the electronic equipment of this device.
Summary of the invention
At least one during purpose of the present invention is intended to address the above problem.
One aspect of the present invention is to provide a kind of improved video data handling procedure, it is characterized in that, this video data handling procedure comprises the steps:
Obtain pending video data;
A circulation executive program is set and processes M data in described pending video data, this circulation executive program comprises carries out the repeatedly circulation of same or similar operation to each in a described M data,
The number of times that a loop control variable limits the circulation in described circulation executive program is set, and wherein said loop control variable is set up to low displacement N position by the binary form indicating value of the M by stored, after displacement, makes the number of times of described circulation equal M/2
n, wherein M, N are more than or equal to 1 integer;
Parallel processing 2 in loop computation
nindividual data are implemented described circulation executive program; And
Export treated video data.
Above-mentioned video data handling procedure of the present invention will be stored in the mode to low bit shift such as the binary form indicating value of the M in the memory of smart mobile phone or computer by utilizing, loop control variable is set, thereby has reduced the cycle-index for the treatment of the circulation executive program computing of M data.In addition, also utilize a plurality of data of parallel processing, greatly improved arithmetic speed, improved the video data treatment effeciency, improved the fluency of video playback.
In a preferred embodiment, a described M data correspond respectively to RGB component value and/or the coordinate figure of the one or more pixels in the single-frame images of pending video.Perhaps can say, data in video data are corresponding to RGB component value, coordinate figure and/or other similar information of a pixel in single-frame images.
In a preferred embodiment, the step that described loop control variable is set comprises the binary form indicating value of the stored described M N position that moves right.
In a preferred embodiment, the step of described parallel processing is that the single-instruction multiple-data processing unit provided by hardware by software program is realized.
In a preferred embodiment, described circulation executive program further comprises: be the coordinate figure of the one or more pixels in described pending video, calculate the table of comparisons with the respective coordinate value of described pixel in the video after expection is processed.
In a preferred embodiment, described circulation executive program further comprises: be the RGB component value of the one or more pixels in described pending video, calculate the table of comparisons with the corresponding RGB component value of described pixel in the video after expection is processed.
In a preferred embodiment, the computing of described circulation executive program further comprises: the RGB component value of the one or more pixels in pending video data is multiplied by respectively to integer P
r, P
g, P
b, then by the value phase adduction after multiplying each other will be with value to low displacement Q position to obtain gray value, wherein P
r, P
g, P
b, Q is the integer that is more than or equal to 1, and meet:
P
R≈0.3*2
Q，P
G≈0.59*2
Q，P
B≈0.11*2
Q。
For example, preferably, the RGB component value of each pixel can be multiplied by respectively to 300,590,110, then with value, moving right 10 and (being equivalent to divided by 2 them
10), the color value of one or more pixels is become to gray value.
The advantage of said method has been to avoid complicated floating-point operation, has not only greatly improved speed, and substantially can not bring obvious distortion in this area.
In a preferred embodiment, described video data handling procedure further comprises, process with described circulation executive program the voice data that described pending video data comprises in the following way: will treat that the decay factor that will be applied to described voice data is multiplied by integer P ' then to low displacement Q ' position, wherein P ', Q ' are the integer that is more than or equal to 1, and meet: P ' ≈ 2
q'.
Another aspect of the present invention is to provide a kind of video data processing apparatus, and this video data processing apparatus comprises:
Obtain the deriving means of pending video data;
A circulation executive program is set and processes the device of M data in described pending video data, this circulation executive program comprises carries out the repeatedly circulation of same or similar operation to each in a described M data,
The device that a loop control variable limits the number of times of the circulation in described circulation executive program is set, and wherein said loop control variable is set up to low displacement N position by the binary form indicating value of the M by stored, after displacement, makes the number of times of described circulation equal M/2
n, wherein M, N are more than or equal to 1 integer;
Parallel processing 2 in loop computation
nindividual data are implemented the device of described circulation executive program; And
Export the device of treated video data.
Another aspect of the present invention is, a kind of electronic equipment that comprises above-mentioned video data processing apparatus is provided.
The accompanying drawing explanation
Describe exemplary of the present invention below in conjunction with accompanying drawing, can be expressly understood from the following description above and other aspects, features and advantages of the present invention.In the accompanying drawings:
Fig. 1 has schematically shown the block diagram according to the video data handling procedure of one embodiment of the invention.
Fig. 2 has schematically shown the block diagram according to the video data processing apparatus of another embodiment of the invention.
Embodiment
Hereinafter specifically describe with reference to the accompanying drawings the embodiment of video data handling procedure of the present invention and corresponding video data processing apparatus.Should be understood that following embodiment and the accompanying drawing of enclosing are only illustrative, should not be considered as limiting the scope of the invention.
At first must point out, the term used in the specification and claims is intended to the technical scheme that clearly illustrates that the present invention protects.These terms can be understood in conjunction with the general acceptable implication in computer and association area, and should not be construed as restrictive.For example, " circulation executive program " can mean to circulate such as, but not limited to for for each of a plurality of data being carried out to repeatedly a kind of implementation or the manner of execution of circulation of same or similar operation." parallel processing " refers to that smart mobile phone, portable computer or other electronic equipments can carry out a kind of computational methods of two or more processors simultaneously, thereby can save the processing time of large-scale or challenge." parallel processing " herein can for example adopt the single-instruction multiple-data processing mode, wherein said single-instruction multiple-data processing mode typically refers to and adopts a controller to control a plurality of processors, thereby each in a plurality of data is carried out respectively to identical operation in a single instrction computing, to realize the data processing method of parallel processing simultaneously.In addition, " RGB component " can mean respectively the value of the information of red (Red), green (Green) of one or more pixels, blue (Blue) three kinds of colors.
Fig. 1 has schematically shown the block diagram according to the video data handling procedure of one embodiment of the invention.
At first, in step 101, obtain pending video data.Described pending video data can receive from the built-in camera of electronic equipment (such as smart mobile phone or portable computer) or the video acquisition devices such as digital camera that are connected with electronic equipment.
Secondly, in step 103, a circulation executive program is set and processes M data in described pending video data.This circulation executive program (for example, for circulation) can have carries out the repeatedly circulation of same or similar operation to each in a described M data.
Again, in step 105, the number of times that a loop control variable limits the circulation in described circulation executive program is set.This can arrange by the binary form indicating value that will be stored in the M in memory described loop control variable and realize to low displacement N position, make the number of times of described circulation equal M/2
n, wherein M, N are more than or equal to 1 integer, such as 1,2,3,4 etc.Like this, the cycle-index of circulation executive program can be changed into 1/2 of the required cycle-index M of SISD single instruction single data processing mode
n.
Then, in step 107, parallel processing 2 in loop computation
nindividual data are implemented described circulation executive program.For example, use the parallel processing 2 in a single instrction computing of single-instruction multiple-data processing mode
nindividual data, thus can be at M/2
ncomplete the processing of a described M data in inferior circulation.
Finally, in step 109, export treated video data.Described treated video data can be output to the display unit of computer or other electronic equipments, thereby can for example produced special video effect be offered to the user.
In the present invention, utilize the method to the displacement of low level integer in step 103 that loop control variable is set, the cycle-index of circulation executive program can be reduced, in some sense, can be considered and will treat a plurality of packet to be processed.Then the parallel processing mode of using single-instruction multiple-data for example is a plurality of data in one group of parallel processing in loop computation.Thereby can greatly improve unexpectedly data processing speed, for example, to realize at short notice the multitude of video data (being carried out to parallel processing, for obtaining corresponding special efficacy), and can export in batches treated video data, thus can obtain smooth video display effect.
Preferably, a described M data correspond respectively to RGB component value, coordinate figure and/or other information of the one or more pixels in the single-frame images of pending video.Perhaps, in other words, data in described pending video data are corresponding to RGB component value, coordinate figure and/or other information of a pixel in the single-frame images of pending video.Thus, by method of the present invention, can realize parallel processing 2 in the once command computing
nthe RGB component value of individual pixel, coordinate figure and/or other information.
To low bit shift, loop control variable is set in the binary form indicating value by by M, thereby makes the number of times of circulation equal M/2
nprocess in, if what adopt is the common register in this area or memory (that is, left side be a high position, and right side is low level), preferably use the method for right shift.But, for example, if adopt contrary value storage method (, left side is low level, and right side is high-order), also can use to the method for shifting left, as long as can make the binary form indicating value of M become M/2
nget final product.
In addition, the single-instruction multiple-data processing unit that the step of described parallel processing can be provided by hardware by software program is realized.For example, described parallel processing can have by the ARM chip in electronic equipment
the single-instruction multiple-data processing unit is realized, thereby expedited data is processed.
Another aspect of the present invention also is to provide the look-up table improvement.For example described circulation executive program further comprises: be the coordinate figure (x of the one or more pixel i in described pending video, y), calculate one with described pixel the table of comparisons of the respective coordinate value in the video after expection is processed (x ', y ').Like this, in some special video effects are processed, available look-up table obtains fast the respective coordinate value of described pixel after conversion (x ', y ') and is replaced.
Perhaps, similarly, also can be the RGB component value of the one or more pixel i in described video, calculate the table of comparisons with the corresponding RGB component value of described pixel in the video after expection is processed.Like this, in some special video effects are processed, available look-up table obtains fast the corresponding RGB component value of described pixel after conversion and is replaced.
And, as those skilled in the art can expect after having read disclosure text, for realizing the special effect processing of other Expected Results, also can be other data in described video data and calculate the table of comparisons with corresponding data in treated video, in order to obtain fast corresponding data with look-up table when needed, thereby realize efficient special video effect processing.
In addition, for example, in the video gradation special effect processing, described circulation executive program further comprises: the RGB component value of the one or more pixels in pending video data is multiplied by respectively to integer P
r, P
g, P
b, then by the value phase adduction after multiplying each other will be with value to low displacement Q position to obtain gray value, wherein P
r, P
g, P
b, Q is the integer that is more than or equal to 1, and meet:
P
R≈0.3*2
Q，P
G≈0.59*2
Q，P
B≈0.11*2
Q。
In addition, in the situation that the voice data that hope comprises video data processed, can be with the above-mentioned integer of the present invention similar method that is shifted, carrying out the normalization stereo process.Particularly, in the process of processing audio data, by treating the decay factor that will be applied to described voice data, be multiplied by integer P ' then to low displacement Q ' position, carry out the normalization stereo process, wherein P ', Q ' are the integer that is more than or equal to 1, and meet: P ' ≈ 2
q'.In the present invention, should be understood that value that symbol " ≈ " is intended to contain " about equal sign " two ends in ± 20 scopes with interior equal situation.
Fig. 2 has schematically shown the block diagram according to the video data processing apparatus of another embodiment of the invention.
As shown in Figure 2, this video data processing apparatus comprises:
Obtain the deriving means 201 of pending video data;
A circulation executive program is set and processes the device 203 of M data in described pending video data, this circulation executive program comprises carries out the repeatedly circulation of same or similar operation to each in a described M data;
The device 205 that a loop control variable limits the number of times of the circulation in described circulation executive program is set, wherein said loop control variable is set up to low displacement N position by the binary form indicating value that will be stored in the M in computer, after displacement, makes the number of times of described circulation equal M/2
n, wherein M, N are more than or equal to 1 integer;
Parallel processing 2 in loop computation
nindividual data are implemented the device 207 of described circulation executive program; And
Export the device 209 of treated video data.
Those skilled in the art should understand, a plurality of preferred embodiments of the video data handling procedure above-mentioned with this paper are corresponding, and video data processing apparatus of the present invention also can comprise many module or devices for the preferred embodiment of implementing described video data handling procedure.
In addition, the present invention also provides the electronic equipment that comprises above-mentioned video data processing apparatus, for example, and smart mobile phone, panel computer, portable computer, Digital Television etc.
Below in conjunction with concrete special video effect processing procedure, describe in detail video data handling procedure of the present invention with respect to video data handling procedure of the prior art at application and beneficial effect aspect the special video effect processing.
At first, take the sketch special effect processing as example.For example should be understood that, in other special video effects are processed (, gray scale special effect processing, photo frame special effect processing, embossment special effect processing etc.) and also can use video data handling procedure of the present invention.Because their principle is substantially similar, at this, omitted the explanation of the concrete application in other special video effects are processed to video data handling procedure of the present invention especially single-instruction multiple-data optimization.
Comparative example 1: sketch special effect processing
Usually the Processing Algorithm adopted in prior art is:
The image of take one 480 * 360 is example, the existing algorithm processing time used to each two field picture is the 30ms left and right, although this used time can be supported the video flowing of 30fps, but consider and add up the operation time while adding the special efficacy stack, so the processing speed of existing algorithm is difficult to reach the expection requirement.
Compare, in one embodiment of the invention, the algorithm after single-instruction multiple-data optimization is:
for（i=1；i<(height*width)>>3;i++）{
Calculate the information of 8 pixels simultaneously.
}
Comparison by above-mentioned two kinds of algorithms,---i.e. the value of (height*width)---moves right 3 can to find out that algorithm in this embodiment is by the data sum in single-frame images for example, the loop control variable of for circulation executive program is set, makes cycle-index be reduced to original 1/8.Then, the information of 8 pixels of parallel processing in ensuing single cyclic process (for example, RGB component value or coordinate figure), can greatly improve processing speed.For example, on arithmetic speed, the algorithm after optimization is than fast 8 times in time of common algorithm, and on actual effect represents, 3-5 doubly, optimizes finishing time probably in the 10ms left and right at least soon.
Should point out, in above-described embodiment, 8 of parallel processing pixels also can be revised as 2 pixels, 4 pixels, 16 pixels etc. 2
nindividual pixel (N is more than or equal to 1 integer), as long as they can meet processing requirements and obtain related hardware or the support of software.
Below in conjunction with other comparative examples, video data handling procedure of the present invention improvement is in other respects described:
Comparative example 2: the recessed change of video, protruding change and distortion, radiation special effect processing
Existing algorithm:
In one embodiment of the invention, improving algorithm is:
When being set, above-mentioned special effect processing first with following algorithm, calculates a table of comparisons table:
In the above embodiment of the present invention, the table of comparisons of the coordinate that described table of comparisons table is each pixel (i, j) in pending video data and the described pixel corresponding coordinate in the video after expection is processed.
In ensuing concrete special effect processing:
Complex calculation is only calculated once when adding special efficacy like this, has saved a large amount of operation time.This has greatly improved the fluency of video in special video effect is processed, thereby has promoted user's experience.
Comparative example 3. video gradation special effect processing
Existing algorithm: f=R * 0.3+G * 0.59+B * 0.11
Wherein f is gray value, and R is red component, and G is green component, and B is blue component.
In one embodiment of the invention, improving algorithm is:
f=(R×P
R+G×P
G+B×P
B)>>Q,
Wherein, the RGB component value of one or more pixels is multiplied by respectively to integer P
r, P
g, P
b, then the value phase adduction after multiplying each other will can be obtained to gray value corresponding to described pixel, wherein P with the value Q position that moves right
r, P
g, P
b, Q is the integer that is more than or equal to 1, and meet:
P
R≈0.3*2
Q，P
G≈0.59*2
Q，P
B≈0.11*2
Q。
Preferably, f=(R * 300+G * 590+B * 110) > > 10.
Above-mentioned improvement algorithm mainly becomes multiplication of integers by the floating number multiplication, changes the floating number division into right shift, for example moves 10.For example, R * 300 are revised as in R of the prior art * 0.3, like this owing to R having been enlarged to 1000 times, need again divided by 1000, now available moving right 10 (is equivalent to divided by 2
10) replace divided by 1000 the approximate gray value that obtains.The advantage of doing like this is to improve arithmetic speed.Although sacrificed accuracy slightly, in this area, can't cause obvious distortion.
Should be understood that in other embodiments, video or image size and hardware or software setting according to required processing, also can adopt and be multiplied by other integers, and the method for the corresponding positions that moves right.
For example, f=(R * 38+G * 75+B * 14) > > 7;
Perhaps f=(R * 76+G * 150+B * 28) > > 8;
Perhaps f=(R * 150+G * 300+B * 55) > > 9.
Comparative example 4: audio frequency special effect processing
Existing normalization algorithm has been used more floating-point operation in the time will being applied to the decay factor of voice data in calculating, the very big like this processing speed that reduced.
Compare, in one embodiment of the invention, sampling is similar to the method for above-mentioned integer displacement, has changed the method for calculating decay factor into the integer displacement.Particularly, in the process of processing audio data, by decay factor is multiplied by integer P ' then for example, to the method for low displacement Q ' position (), carry out the normalization stereo process to the right, wherein P ', Q ' are the integer that is more than or equal to 1, and meet: P ' ≈ 2
q'.
Said method will greatly improve arithmetic speed, promote the fluency that the user experiences.
Should point out, improved video data handling procedure of the present invention and device can be used for obtaining various special visual effects, comprise such as video gradation, recessed change, protruding change, sketch, embossment, radiation, photo frame, animation, audio frequency special efficacy etc.But improved video data handling procedure of the present invention and device are not limited to the special video effect of above-mentioned example and process, and also can be used for the aspects such as other images, video, audio frequency, animation process.
Video data handling procedure of the present invention and device also can be managed the high in the clouds service in conjunction with special efficacy, to the user, provide concrete special effect processing assembly (as: various photo frames, custom colors special efficacy etc.) to download and use.
It should be understood that content of the present invention is not limited to above-mentioned embodiment.In the situation that do not depart from the spirit and scope of the claim of enclosing; can carry out multiple modification and replacement to present disclosure; for example can carry out Selection and Constitute to above-mentioned technical characterictic, described multiple modification and replacement all are interpreted as dropping in protection scope of the present invention.
Claims (10)
1. a video data handling procedure, is characterized in that, this video data handling procedure comprises the steps:
Obtain pending video data;
A circulation executive program is set and processes M data in described pending video data, this circulation executive program comprises carries out the repeatedly circulation of same or similar operation to each in a described M data;
The number of times that a loop control variable limits the circulation in described circulation executive program is set, and wherein said loop control variable is set up to low displacement N position by the binary form indicating value of the M by stored, after displacement, makes the number of times of described circulation equal M/2
n, wherein M, N are more than or equal to 1 integer;
Parallel processing 2 in loop computation
nindividual data are implemented described circulation executive program; And
Export treated video data.
2. video data handling procedure according to claim 1, is characterized in that, a described M data correspond respectively to RGB component value and/or the coordinate figure of the one or more pixels in the single-frame images of pending video.
3. video data handling procedure according to claim 1 and 2, is characterized in that, the step that described loop control variable is set comprises the binary form indicating value of the described M N position that moves right.
4. video data handling procedure according to claim 1, is characterized in that, the step of described parallel processing is that the single-instruction multiple-data processing unit provided by hardware by software program is realized.
5. video data handling procedure according to claim 1, it is characterized in that, described circulation executive program further comprises: be the coordinate figure of the one or more pixels in described pending video data, calculate the table of comparisons with the respective coordinate value of described pixel in the video after expection is processed.
6. video data handling procedure according to claim 1, it is characterized in that, described circulation executive program further comprises: be the RGB component value of the one or more pixels in described pending video data, calculate the table of comparisons with the corresponding RGB component value of described pixel in the video after expection is processed.
7. video data handling procedure according to claim 1 and 2, is characterized in that, described circulation executive program further comprises: the RGB component value of the one or more pixels in pending video data is multiplied by respectively to integer P
r, P
g, P
b, then by the value phase adduction after multiplying each other will be with value to low displacement Q position to obtain gray value, wherein P
r, P
g, P
b, Q is the integer that is more than or equal to 1, and meet:
P
R≈0.3*2
Q，P
G≈0.59*2
Q，P
B≈0.11*2
Q。
8. video data handling procedure according to claim 1, it is characterized in that, further comprise, process with described circulation executive program the voice data that described pending video data comprises in the following way: will treat that the decay factor that will be applied to described voice data is multiplied by integer P ' then to low displacement Q ' position, wherein P ', Q ' are the integer that is more than or equal to 1, and meet: P ' ≈ 2
q'.
9. a video data processing apparatus, is characterized in that, this video data processing apparatus comprises:
Obtain the deriving means of pending video data;
A circulation executive program is set and processes the device of M data in described pending video data, this circulation executive program comprises carries out the repeatedly circulation of same or similar operation to each in a described M data;
The device that a loop control variable limits the number of times of the circulation in described circulation executive program is set, and wherein said loop control variable is set up to low displacement N position by the binary form indicating value of the M by stored, after displacement, makes the number of times of described circulation equal M/2
n, wherein M, N are more than or equal to 1 integer;
Parallel processing 2 in loop computation
nindividual data are implemented the device of described circulation executive program; And
Export the device of treated video data.
10. an electronic equipment, comprise video data processing apparatus according to claim 9.
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