CN102752520A - Deformation method and system in polygon mode for two-dimensional subtitle - Google Patents
Deformation method and system in polygon mode for two-dimensional subtitle Download PDFInfo
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- CN102752520A CN102752520A CN2011101269539A CN201110126953A CN102752520A CN 102752520 A CN102752520 A CN 102752520A CN 2011101269539 A CN2011101269539 A CN 2011101269539A CN 201110126953 A CN201110126953 A CN 201110126953A CN 102752520 A CN102752520 A CN 102752520A
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Abstract
The invention discloses a deformation method and a system in a polygon mode for a two-dimensional subtitle and mainly relates to production and process of subtitle effects in the production and broadcast field of broadcast television programs. The method includes obtaining basic size parameters of an original subtitle window to obtain a basic proportion parameter; obtaining basic size parameters of a subtitle window after deformation to obtain a basic proportion parameter; obtaining frame information t and deformation function f (x, y, t) according to the basic size parameters of the original subtitle window; and rendering pictures of each frame according to a frame sequence, and obtaining new pixel points according to the deformation function f (x, y, t) during the rendering process. The system comprises an original subtitle information acquisition unit, a deformation information acquisition unit, a deformation function generating unit and a rendering and assigning unit, wherein the original subtitle information acquisition unit and the deformation information acquisition unit input the parameters into the deformation function generating unit, and then the rendering and assigning unit carries out the assignment. According to the method and the system, attribute assignment of each pixel is performed through calculation of each pixel in each subtitle window and in a regional comparison mode, only basic proportion and assignment calculation is used, and therefore the calculation can be achieved through a central processing unit (CPU) without dependence on a graphics processing unit (GPU).
Description
Technical field
The present invention relates to making of program captions and broadcast and correlative technology field, relate in particular to a kind of polygon mode deformation method and system of two-dimentional captions.
Background technology
In existing program making and broadcast and correlative technology field, in the process to the program material making, in order better literal to be showed; Need a large amount of captions to synthesize, particularly in large-scale 3D film, material are made and play, in order to obtain better effect; Usually need in captions, insert special effects, improve constantly, occur 3D effect captions stunt successively along with what stunt was required; 3D captions stunt need be calculated lot of data in implementation procedure, and will carry out great amount of calculation by the GPU of graphic display card usually, in order to obtain the picture of high-quality; To the graphic operation processing speed, call the GPU function so hardware is had higher requirement because calculating can relate to, in the prior art; Film titler in making, playing process, provide hardware and software environment preferably in 3D captions special efficacy, and handles the restriction that the material processing speed receives the GPU disposal ability; And when playing, also there is a same requirement; In 3D captions building-up process, because handled a large amount of image files, so file needs bigger memory space and spatial cache.
Particularly in captions metamorphic animation manufacturing process, because need play order according to frame, every frame picture is calculated, therefore increased amount of calculation, particularly when resolution requirement was higher, problem was particularly outstanding.
Between above situation, in realizing process of the present invention, the inventor finds that there are the following problems at least in the prior art:
Be out of shape in the making, in building-up process owing to need jumbo memory space to reach the speed of service fast at the 3D captions; So having relatively high expectations to graphic display card and GPU; In carrying out simple special efficacy building-up process; Caused the waste of system; Simultaneously; Also there are many-sided restrictions such as the speed of service and disposal ability for playback equipment, give the making of 3D captions distortion special efficacy and use generation to come restriction.
Summary of the invention
To deficiency of the prior art, the technical problem that the present invention will solve provides a kind of method and system through pixel assignment realization captions special efficacy, is used at film titler 3D special efficacy captions distortion special efficacy manufacturing process, its special efficacy generation and broadcast.
A kind of polygon mode deformation method of two-dimentional captions, said step specifically comprises: 1) obtain the parameters of basic dimensions of former caption window, and obtain basic scale parameter; 2) obtain the parameters of basic dimensions of distortion back caption window, and obtain basic scale parameter; 3) according to the parameters of basic dimensions of former caption window, and obtain the parameters of basic dimensions of caption window after basic scale parameter, the distortion, and play frame information t, and obtain basic scale parameter obtain warping function f (x, y, t); 4) according to the frame preface, every frame picture to be played up, in the render process, (x, y t) obtain new pixel position according to warping function f.
Preferably, parameters of basic dimensions comprises described in the said step 1): former caption window length value X
0, former caption window width value Y
0Said basic scale parameter comprises: length and width ratio; Convergent-divergent ratio; Said convergent-divergent ratio is set at initial value.
Preferably, parameters of basic dimensions comprises said step 2): distortion caption window length value X
1, distortion caption window width value Y
1Said basic scale parameter comprises: length and width ratio; Distortion convergent-divergent ratio; Said convergent-divergent ratio is according to former caption window length value X
0, former caption window width value Y
0, distortion caption window length value X
1, distortion caption window width value Y
1And the distortion scaling obtains.
Preferably, the concrete grammar in the said step 3) is: 31) in the A frame, pick up caption window pixel (x
1, y
1), through said warping function f (x, y, t), according to x
2=f
1(x
1, y
1), y
2=f
1(x
1, y
1), the respective pixel value (x after obtaining being out of shape
2, y
2); 32) in the A+1 frame, pick up caption window pixel (x
n, y
n), change the t value, through said warping function f (x, y, t), according to x
N+1=f
n(x
n, y
n), y
N+1=f
n(x
n., y
n), the respective pixel value (x after obtaining being out of shape
N+1, y
N+1).
Preferably, (x, y t), can be the ratio warping function, convergent-divergent warping function, translation warping function to said warping function f.
The present invention provides a kind of polygon mode deformation method of two-dimentional captions; It is characterized in that: said step specifically comprises: 1) pick up former caption window interior pixel information; And store by display line, column split numbering according to resolution, generate row pixel data group, row pixel data group; 2) obtain the dimensional parameters of distortion back caption window, and obtain the basic transformation parameter; 3) according to said basic transformation parameter, according to the frame broadcasting speed, draw first trip or first basic transformation unit function f (x, y, t).4) according to said basic transformation unit institute's corresponding row pixel data group, row pixel data group are carried out assignment.Said step 2) the basic transformation parameter comprises described in: translation distance, the anglec of rotation, scale value, rotation value; The basic transformation unit function comprises described in the said step 3): ratio warping function, convergent-divergent warping function, translation warping function.
The present invention provides a kind of polygon mode anamorphotic system of two-dimentional captions; Specifically comprise: former caption information collecting unit, deformation information collecting unit, warping function generation unit, play up the assignment unit; Wherein, Former caption information collecting unit, deformation information collecting unit are imported the warping function generation unit with parameter, carry out assignment through playing up the assignment unit.
Wherein, said former caption information collecting unit is used to obtain the parameters of basic dimensions of former caption window, and obtains basic scale parameter.
Wherein, said deformation information collecting unit is used to obtain the basic size system of distortion back caption window, and obtains basic scale parameter.
Wherein, said warping function generation unit is used for the parameters of basic dimensions according to former caption window, and obtains the parameters of basic dimensions of caption window after basic scale parameter, the distortion; And broadcast frame information t; And obtain basic scale parameter obtain warping function f (x, y, t).
Wherein, the said assignment unit of playing up is used for according to the frame preface, and every frame picture is played up, and in the render process, (x, y t) obtain new pixel position according to warping function f.
Wherein, said parameters of basic dimensions comprises: former caption window length value X
0, former caption window width value Y
0, said basic scale parameter comprises: length and width ratio; Convergent-divergent ratio; Said convergent-divergent ratio is set at initial value.
Wherein, said parameters of basic dimensions comprises: distortion caption window length value X
1, distortion caption window width value Y
1Said basic scale parameter comprises: length and width ratio; Distortion convergent-divergent ratio; Said convergent-divergent ratio is according to former caption window length value X
0, former caption window width value Y
0, distortion caption window length value X
1, distortion caption window width value Y
1And the distortion scaling obtains.
Wherein, (x, y t), can be the ratio warping function, convergent-divergent warping function, translation warping function to said warping function f.
Above technical scheme can find out that the present invention has the following advantages:
At first; The present invention carries out attribute assignment according to zone mode relatively to each pixel through the calculating to each pixel in each caption window, has only used basic ratio, assignment operation; Realize thereby calculating can be relied on CPU, can not rely on and realize with GPU.
Secondly, the present invention dynamically obtains the warping function parameter through the parameters of basic dimensions of former caption window, the basic size of distortion back caption window, thus dynamic, linear solution
At last, the present invention provides multiple captions mode of texturing to comprise: ratio distortion, convergent-divergent distortion, translation distortion.
Description of drawings
Fig. 1 is the inventive method first embodiment sketch map;
Fig. 2 is the inventive method second embodiment sketch map;
Fig. 3 is the inventive method the 3rd embodiment sketch map;
Fig. 4 is the polygon mode deformation method illustration intention of a kind of two-dimentional captions of the present invention;
Fig. 5 is the polygon mode anamorphotic system sketch map of these a kind of two-dimentional captions.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below; Technical scheme in the embodiment of the invention is carried out clear, complete description; Obvious described embodiment only is a part of embodiment of the present invention, is not whole embodiment, based on the embodiment among the present invention; Those of ordinary skills are not paying the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Embodiment one:
See also Fig. 1, the inventive method first embodiment, realize the method that " parallelogram " captions are out of shape through the polygon mode deformation method of two-dimentional captions:
At first, obtain the parameters of basic dimensions of former caption window: former caption window length value X
0, former caption window width value Y
0, and obtain basic scale parameter; As: the length and width ratio X
0/ Y
0
Afterwards, obtain the parameters of basic dimensions distortion caption window length value X of distortion back caption window
1, distortion caption window width value Y
1, and obtain basic scale parameter; The length and width ratio X
1/ Y
1
According to the parameters of basic dimensions of former caption window, and obtain the parameters of basic dimensions of caption window after basic scale parameter, the distortion, and play frame information t, and obtain basic scale parameter and obtain the translation warping function:
As: in 1 frame, pick up caption window pixel (x
1, y
1), through said translation warping function f (x, y, t), according to x
2=f
1(x
1, y
1), y
2=f
1(x
1, y
1), the respective pixel value (x after obtaining being out of shape
2, y
2);
In 2 frames, pick up caption window pixel (x
2, y
2), the t+1 value, through said warping function f (x, y, t), according to x
3=f (x
2, y
2), y
3=f (x
2., y
2), the respective pixel value (x after obtaining being out of shape
3, y
3).
Finally, according to the frame preface, every frame picture is played up, in the render process, (x, y t) obtain new pixel position according to warping function f.
Embodiment two:
See also Fig. 2, the inventive method second embodiment, realize the method that " trapezoidal " captions are out of shape through the polygon mode deformation method of two-dimentional captions:
At first, obtain the parameters of basic dimensions of former caption window: former caption window length value X
0, former caption window width value Y
0, and obtain basic scale parameter; As: the length and width ratio X
0/ Y
0
Afterwards, obtain the parameters of basic dimensions of distortion back caption window, distortion caption window length value X
1, distortion caption window width value Y
1, and obtain basic scale parameter; And trapezoidal top is with respect to the scale value S of the top before changing
1-1=X
1-1/ X
1-2
According to the parameters of basic dimensions of former caption window, and obtain basic scale value S
1-1=X
1-1/ X
1-2, and play frame information t, and obtain basic scale parameter and obtain the convergent-divergent warping function:
As: in 1 frame, pick up caption window pixel (x
1, y
1), through said translation warping function f (x, y, t), according to x
2=f
1(x
1, y
1), y
2=f
1(x
1, y
1), obtain the respective pixel value (x behind the convergent-divergent
2, y
2);
In 2 frames, pick up caption window pixel (x
2, y
2), the t+1 value, through said warping function f (x, y, t), according to x
3=f (x
2, y
2), y
3=f (x
2., y
2), obtain the respective pixel value (x behind the convergent-divergent
3, y
3).
Finally, according to the frame preface, every frame picture is played up, in the render process, (x, y t) obtain new pixel position according to warping function f.
Embodiment three:
See also Fig. 3, the inventive method the 3rd embodiment, realize the method that " parallelogram " captions are out of shape through the polygon mode deformation method of two-dimentional captions:
At first, pick up former caption window interior pixel information as illustrating: former caption window length value X
0, former caption window width value Y
0, and store by display line, column split numbering according to resolution, generate row pixel data group, row pixel data group; As can confirm according to the actual line scanning number of row, like 1024 row or row, and with every row as organizing; Write down the group number state of every row or row, and give corresponding numbering;
According to the dimensional parameters of caption window after the distortion of being obtained, and obtain the basic transformation parameter,, can also be the anglec of rotation, scale value, rotation value for other conversion as for parallelogram, being translation distance;
And according to above parameter and basic transformation ginseng Frame broadcasting speed; Draw first trip or first basic transformation unit function f (x; Y t), the θ value shown in diagram, reaches translation distance and is worth the translation warping function; Can also be ratio warping function, convergent-divergent warping function for trapezoidal and other distortion.
Embodiment four:
See also Fig. 5, the inventive method the 4th embodiment, through the polygon mode deformation method and the system of two-dimentional captions:
The present invention provides a kind of polygon mode anamorphotic system of two-dimentional captions; Specifically comprise: former caption information collecting unit, deformation information collecting unit, warping function generation unit, play up the assignment unit; Wherein, Former caption information collecting unit, deformation information collecting unit are imported the warping function generation unit with parameter, carry out assignment through playing up the assignment unit.
Wherein, said former caption information collecting unit is used to obtain the parameters of basic dimensions of former caption window, and obtains basic scale parameter.
Wherein, said deformation information collecting unit is used to obtain the basic size system of distortion back caption window, and obtains basic scale parameter.
Wherein, said warping function generation unit is used for the parameters of basic dimensions according to former caption window, and obtains the parameters of basic dimensions of caption window after basic scale parameter, the distortion; And broadcast frame information t; And obtain basic scale parameter obtain warping function f (x, y, t).
Wherein, the said assignment unit of playing up is used for according to the frame preface, and every frame picture is played up, and in the render process, (x, y t) obtain new pixel position according to warping function f.
Wherein, said parameters of basic dimensions comprises: former caption window length value X
0, former caption window width value Y
0, said basic scale parameter comprises: length and width ratio; Convergent-divergent ratio; Said convergent-divergent ratio is set at initial value.
Wherein, said parameters of basic dimensions comprises: distortion caption window length value X
1, distortion caption window width value Y
1Said basic scale parameter comprises: length and width ratio; Distortion convergent-divergent ratio; Said convergent-divergent ratio is according to former caption window length value X
0, former caption window width value Y
0, distortion caption window length value X
1, distortion caption window width value Y
1And the distortion scaling obtains.
Wherein, (x, y t), can be the ratio warping function, convergent-divergent warping function, translation warping function to said warping function f.
Claims (16)
1. the polygon mode deformation method of two-dimentional captions, it is characterized in that: said step specifically comprises:
1) obtains the parameters of basic dimensions of former caption window, and obtain basic scale parameter;
2) obtain the parameters of basic dimensions of distortion back caption window, and obtain basic scale parameter;
3) according to the parameters of basic dimensions of former caption window, and obtain the parameters of basic dimensions of caption window after basic scale parameter, the distortion, and play frame information t, and obtain basic scale parameter obtain warping function f (x, y, t);
4) according to the frame preface, every frame picture to be played up, in the render process, (x, y t) obtain new pixel position according to warping function f.
2. the method described in claim 1, it is characterized in that: parameters of basic dimensions comprises described in the said step 1): former caption window length value X
0, former caption window width value Y
0
Said basic scale parameter comprises: length and width ratio; Convergent-divergent ratio; Said convergent-divergent ratio is set at initial value.
3. the method described in claim 1, it is characterized in that: parameters of basic dimensions comprises said step 2): distortion caption window length value X
1, distortion caption window width value Y
1
Said basic scale parameter comprises: length and width ratio; Distortion convergent-divergent ratio; Said convergent-divergent ratio is according to former caption window length value X
0, former caption window width value Y
0, distortion caption window length value X
1, distortion caption window width value Y
1And the distortion scaling obtains.
4. the method described in claim 1 is characterized in that, the concrete grammar in the said step 3) is:
31) in the A frame, pick up caption window pixel (x
1, y
1), through said warping function f (x, y, t), according to x
2=f
1(x
1, y
1), y
2=f
1(x
1, y
1), the respective pixel value (x after obtaining being out of shape
2, y
2);
32) in the A+1 frame, pick up caption window pixel (x
n, y
n), change the t value, through said warping function f (x, y, t), according to x
N+1=f
n(x
n, y
n), y
N+1=f
n(x
n., y
n), the respective pixel value (x after obtaining being out of shape
N+1, y
N+1).
5. the method described in claim 4 is characterized in that, (x, y t), can be the ratio warping function, convergent-divergent warping function, translation warping function to said warping function f.
6. the polygon mode deformation method of two-dimentional captions, it is characterized in that: said step specifically comprises:
1) picks up former caption window interior pixel information, and store by display line, column split numbering, generate row pixel data group, row pixel data group based on resolution ratio;
2) obtain the dimensional parameters of distortion back caption window, and obtain the basic transformation parameter;
3) according to said basic transformation parameter, according to the frame broadcasting speed, draw first trip or first basic transformation unit function f (x, y, t).
4) according to said basic transformation unit institute's corresponding row pixel data group, row pixel data group are carried out assignment.
7. the method described in claim 6 is characterized in that, said step 2) described in the basic transformation parameter comprise: translation distance, the anglec of rotation, scale value, rotation value.
8. the method described in claim 6 is characterized in that, the basic transformation unit function comprises described in the said step 3): ratio warping function, convergent-divergent warping function, translation warping function.
9. the polygon mode anamorphotic system of two-dimentional captions; It is characterized in that; Specifically comprise: former caption information collecting unit, deformation information collecting unit, warping function generation unit, play up the assignment unit; Wherein, former caption information collecting unit, deformation information collecting unit are imported the warping function generation unit with parameter, carry out assignment through playing up the assignment unit.
10. the system described in claim 9 is characterized in that, said former caption information collecting unit is used to obtain the parameters of basic dimensions of former caption window, and obtains basic scale parameter.
11. the method described in claim 9 is characterized in that, said deformation information collecting unit is used to obtain the basic size system of distortion back caption window, and obtains basic scale parameter.
12. the system described in claim 9; It is characterized in that said warping function generation unit is used for the parameters of basic dimensions according to former caption window, and obtain the parameters of basic dimensions of caption window after basic scale parameter, the distortion; And broadcast frame information t; And obtain basic scale parameter obtain warping function f (x, y, t).
13. the system described in claim 9 is characterized in that, the said assignment unit of playing up is used for according to the frame preface, and every frame picture is played up, and in the render process, (x, y t) obtain new pixel position according to warping function f.
14. the system described in claim 10 is characterized in that, said parameters of basic dimensions comprises: former caption window length value X
0, former caption window width value Y
0, said basic scale parameter comprises: length and width ratio; Convergent-divergent ratio; Said convergent-divergent ratio is set at initial value.
15. the system described in claim 11 is characterized in that, said parameters of basic dimensions comprises: distortion caption window length value X1, distortion caption window width value Y1;
Said basic scale parameter comprises: length and width ratio; Distortion convergent-divergent ratio; Said convergent-divergent ratio is out of shape caption window length value X1, distortion caption window width value Y1 according to former caption window length value X0, former caption window width value Y0; And the distortion scaling obtains.
16. the system described in claim 12 is characterized in that, (x, y t), can be the ratio warping function, convergent-divergent warping function, translation warping function to said warping function f.
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| CN101814006A (en) * | 2010-04-28 | 2010-08-25 | 中兴通讯股份有限公司 | Method and device for realizing water ripple special effect |
| EP2228767A2 (en) * | 2009-03-13 | 2010-09-15 | Fisher-Rosemount Systems, Inc. | Scaling composite shapes for a graphical human-machine interface |
-
2011
- 2011-05-17 CN CN2011101269539A patent/CN102752520A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10283469A (en) * | 1997-04-10 | 1998-10-23 | Nec Corp | Image transforming method and device |
| CN1746843A (en) * | 2004-09-08 | 2006-03-15 | 英业达股份有限公司 | Window and icon set system and method |
| CN101415079A (en) * | 2008-11-04 | 2009-04-22 | 新奥特（北京）视频技术有限公司 | Method for transforming subtitling object into Bessel curve |
| EP2228767A2 (en) * | 2009-03-13 | 2010-09-15 | Fisher-Rosemount Systems, Inc. | Scaling composite shapes for a graphical human-machine interface |
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Application publication date: 20121024 |
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