CN102087750A - Method for manufacturing cartoon special effect - Google Patents
Method for manufacturing cartoon special effect Download PDFInfo
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- CN102087750A CN102087750A CN2010102000440A CN201010200044A CN102087750A CN 102087750 A CN102087750 A CN 102087750A CN 2010102000440 A CN2010102000440 A CN 2010102000440A CN 201010200044 A CN201010200044 A CN 201010200044A CN 102087750 A CN102087750 A CN 102087750A
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Abstract
The invention relates to a method for manufacturing a cartoon special effect, which mainly comprises a method for manufacturing a three-dimensional water surface real-time rendering system, a method for manufacturing cartoon ink rendering, a method for manufacturing fluid smoke and flame, a method for programming of a human face generator, a method for dividing a module of water ripple generating plugin, a method for extracting the head model characteristics, and the like. The invention can omit a lot of repeated fussy works, is quite simple and convenient for operation, is rich in humanization, greatly saves labor, materials and cost and can release a cartoon manufacturer from boring model design for concentrating on researching things at a higher level, thereby greatly enhancing the function of the traditional platform.
Description
Technical field
The present invention relates to animation and make the field, be specially a kind of method for making of animation special efficacy.
Background technology
At present, the animation special efficacy is the core technology of animation and recreation industry, is determining the artistic appeal of creative industry such as digital entertainment, wireless 3G digital entertainment.Domestic enterprise and research unit to animation special efficacy The Research of Relevant Technology have seldom seriously hindered the development of creative industry.In addition, animation making work is a large amount of and loaded down with trivial details, and operating difficulties is wasted time and energy, and makes cartoon making personnel much repeated work, thus the thinking of forfeiture intention.
Summary of the invention
Technical matters solved by the invention is to provide a kind of method for making of animation special efficacy, to solve the shortcoming in the above-mentioned background technology.
Technical matters solved by the invention realizes by the following technical solutions:
A kind of method for making of animation special efficacy, mainly comprise the program composition of the three-dimensional water surface of real-time rendering system method for making, cartoon rendering with water and ink method for making, fluid smog and flame method for making, people's face maker, Module Division that the ripples line generates plug-in unit, head model feature extracting method etc., its implementation is as follows:
(1) the three-dimensional water surface of real-time rendering system method for making:
Defined two two-dimensional array buf1[Pool-Heights corresponding in the program with picture] [PoolWidth] and buf2[PoolHeight] [PoolWidth], be used to preserve the amplitude of forward and backward moment each point.Wherein PoolHeight is the line number of picture pixel, and PoolWidth is the columns of picture pixel.If " pond " water surface is a plane during original state, the amplitude of each point is 0 (with buf1 and buf2 initialize 0).
(2) cartoon rendering with water and ink method for making:
Crisperding method: submarginal triangle is played up black, original quadrilateral is converted to leg-of-mutton object model, make a kind of heavier edge effect to object.In order to determine that those are the triangles that need be colored, the direction of also using camera lens or light source is removed the leg-of-mutton normal vector after the dot product conversion, the result of dot product has represented a submarginal degree of triangle, the edge must be by a front towards triangle and back side towards leg-of-mutton common edge.If the absolute value of the dot product of leg-of-mutton normal vector and lens direction is more little then represent that its isolated edge is near more, if dot product is negative then represents that it is to have deviated from the observer.
The cartoon colorize method: in the scene buffering of a normal direction, each pixel is all stored 3 values, and promptly (nx, ny nz), obtain this buffering by same angle lens is played up this scene to the quadrature value of the some three-dimensional coordinate of this pixel correspondence.In this twice is played up, with a kind of pure white scatterer (surround lighting=black, scattered light=white, do not have reflected light) replace the color and the material of all objects, remove all external light sources then, to make an amendment to the material of object again and with its scattering colour reproduction in surround lighting, it is black that the scattering look is set, and keeps original reflected colour.
(3) fluid smog and flame method for making:
Simplify physical model, and used steady flow method and half Lagrangian method of Stam to come approximate solution N-S system of equations.
The external force item: the projection meeting when finding the solution Poisson equation increases the swirling flow characteristic of fluid, so last external force item is:
Wherein f initially is the external force of initial time, as wind-force etc.So just reduced the extra computation amount that external force and eddy flow are brought.So the external force item just is:
(4) program composition of people's face maker:
Mainly comprise two parts, the 3ds file reads in demonstration and the control with the 3ds object.Described 3ds file read-in programme establishment is for after having set up model in 3DSMAX, save as the .3DS file in the triangular mesh mode, in program, need to set up the data structure of corresponding model, read file data, in 3DSMAX, draw then, export this geometry data at last to body of an instrument, and from body of an instrument, read this geometry data.
(5) the ripples line generates the Module Division of plug-in unit
Execution of program modules: one of this module creation generates the rain expression formula of effect of simulation flow surface at random, and expression formula utilizes machine time as random number seed, and time can not stop to change, and can produce randomness preferably.The size of scene two dimensional surface is set earlier in the expression formula, dropping frequency, size, quantity of virtual raindrop etc. are set, then these parameters are passed to the fluidTextureName object, so that the back module invokes.
Create the mobile texture module of the water surface: the mobile texture of a 3D of this module creation carries out the 2D simulation.By the nodename that returns, connect complementary nodal community, and the attribute on liquid surface is provided with, return liquid surface class at last, so that the back module invokes.
Main program module: this module is checked the scene type that is provided with earlier, and default type is oceanshape.At first check selected object, the title of object in the scene is returned,, obtain the entity type in the current scene by the if-else structure; The mobile texture that will obtain again returns to the execution function module with parametric form.Carry out function module and carry out ripples line effect simulation by call parameters.
(6) head model feature extracting method:
Utilization 3DS MAX for general people's face, chooses 7 unique point A-G, and wherein A, B, C, D are 4 canthus points; E is a nose; F, G are corners of the mouth point.Compare with the further feature point, these 7 points are easier to extract from image and measured.By the extraction of above unique point, determine the zone of eyes, nose, face, and draw relevant face feature parameter and set up database.
Beneficial effect:
The present invention can not only remove the loaded down with trivial details sex work of a large amount of repetitions from, and operate the very easy hommization that is imbued with, manpower, material resources and financial resources have greatly been saved, the cartoon making personnel can be freed from uninteresting modelling, attentively study higher level thing, thereby can strengthen the function of original platform greatly.
Description of drawings
Fig. 1 is that the unique point of head model feature extraction is selected and the hunting zone synoptic diagram;
Fig. 2 is the positioning feature point synoptic diagram of head model feature extraction.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
Referring to the unique point selection of Fig. 1 head model feature extraction and the positioning feature point synoptic diagram of hunting zone synoptic diagram and the feature extraction of Fig. 2 head model, present embodiment is the embodiment of head model feature extracting method.
In the present embodiment, feature extraction mainly comprises following 5 steps:
(1) selection of unique point
As shown in Figure 1, for general people's face, choose 7 unique point A-G, A, B, C, D are 4 canthus points among the figure; E is a nose; F, G are corners of the mouth point.Compare with the further feature point, these 7 points are easy to extract from image and measured.By the extraction of above unique point, determine the zone of eyes, nose, face, and draw relevant face feature parameter and set up database.
(2) determine the hunting zone of unique point
As shown in Figure 1, the hunting zone is made as a rectangular area, the length of rectangle is the distance of face summit and chin point, and the wide of rectangle is that face is wide.The face summit is meant the point of people's face and hair intersection the top, is the highest point at edge, and in like manner the chin point is the lowest part at edge.Because symmetry in the middle of the 3DS MAX head model, so most cases peak and minimum point be all on the CEM line of symmetry, and the influence of beard, illumination and shade is less, so the length of face can be obtained by summit and chin point.Detect nose bottom margin line and line of symmetry intersection point.The E point left end point of edge line therewith is a starting point, adds certain side-play amount, searches in the scope of contouring head from inside to outside, first frontier point that finds, be the point on the cheek outline line, it is wide that the width of the face mask line at nose place place is considered as face, promptly determined the rectangular area.
(3) location of unique point
As Fig. 1 and shown in Figure 2, nose bottom margin line and left and right sides cheek edge line have been arranged, the position E and the face that just can obtain prenasale are wide.According to the issue of people's face face, left eye and right eye are about 1/3 place that is positioned at face length, and the center of right and left eyes lays respectively at 1/4 wide place of face, searches at the center of outline map eye, and the edge line segment that finds is the outline line of eye.Searching the most left some D and the rightest some C of line segment, is exactly the left and right canthus of eye, and left eye is exactly left eye exterior angle and left eye interior angle relatively.In like manner, can obtain the ectocanthion A and the interior B of angulus oculi medialis of right eye.Affirmation for the left and right sides corners of the mouth.Because mouth is positioned at nasal downside, so directly find the position at lip place from nose search downwards.In like manner, we need only search lip affiliated the most left some G of line segment, the rightest some F, have just found the left corners of the mouth, the right corners of the mouth, thereby have finished feature point extraction work.
(4) feature extraction of eyes, face
On the basis of above-mentioned acquisition unique point, set up the rectangular coordinate system of people's face outline map, by A, B, 4 definite eyes of C, D, and the coordinate E in (i of tail of the eye point A, B or C, D in obtaining, j) and E out (m, n), the distance of inside and outside angle point is the width L eye=|E in (i of eyes, j)-E out (m, n) |.The width of the eyes of obtaining by angle point inside and outside the eyes is as a data item in the database.Be similar to eyes handled, for acquired mouth unique point F, G, obtain equally left and right sides corners of the mouth F, G coordinate M left (i, j) and E right (m, n), distance be L mouth=|M left (i, j)-E right (m, n) |.Set up another data item in the database with this.
(5) feature extraction of lower jaw outline line
In people's face direct picture, the lower jaw outline line is that the influence of being expressed one's feelings of the following part of a kind of metastable shape facility, especially face is very little, and the lower jaw profile has comprised most shape of face information.People's face is divided into round face, sharp face and square face, sets up the lower jaw shape template in view of the above: pointed chin, circle chin peace chin.Point on the lower jaw profile that obtains is in advance carried out template matches, carry out the outline line classification according to matching result again.Test shows that this method classifying quality is good, can effectively improve the speed and the discrimination of database.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the instructions just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (1)
1. the method for making of an animation special efficacy, mainly comprise the program composition of the three-dimensional water surface of real-time rendering system method for making, cartoon rendering with water and ink method for making, fluid smog and flame method for making, people's face maker, Module Division, the head model feature extracting method that the ripples line generates plug-in unit, it is characterized in that implementation method is as follows:
(1) the three-dimensional water surface of real-time rendering system method for making:
Defined two two-dimensional array buf1[Pool-Heights corresponding in the program with picture] [PoolWidth] and buf2[PoolHeight] [PoolWidth], be used to preserve the amplitude of forward and backward moment each point.Wherein PoolHeight is the line number of picture pixel, and PoolWidth is the columns of picture pixel.If " pond " water surface is a plane during original state, the amplitude of each point is 0 (with buf1 and buf2 initialize 0);
(2) cartoon rendering with water and ink method for making:
Crisperding method: submarginal triangle is played up black, original quadrilateral is converted to leg-of-mutton object model, make a kind of heavier edge effect to object.In order to determine that those are the triangles that need be colored, the direction of also using camera lens or light source is removed the leg-of-mutton normal vector after the dot product conversion, the result of dot product has represented a submarginal degree of triangle, the edge must be by a front towards triangle and back side towards leg-of-mutton common edge.If the absolute value of the dot product of leg-of-mutton normal vector and lens direction is more little then represent that its isolated edge is near more, if dot product is negative then represents that it is to have deviated from the observer;
The cartoon colorize method: in the scene buffering of a normal direction, each pixel is all stored 3 values, and promptly (nx, ny nz), obtain this buffering by same angle lens is played up this scene to the quadrature value of the some three-dimensional coordinate of this pixel correspondence.In this twice is played up, with a kind of pure white scatterer (surround lighting=black, scattered light=white, do not have reflected light) replace the color and the material of all objects, remove all external light sources then, to make an amendment to the material of object again and with its scattering colour reproduction in surround lighting, it is black that the scattering look is set, and keeps original reflected colour;
(3) fluid smog and flame method for making:
Simplify physical model, and used steady flow method and half Lagrangian method of Stam to come approximate solution N-S system of equations;
(4) program composition of people's face maker:
Mainly comprise two parts, the 3ds file reads in demonstration and the control with the 3ds object.Described 3ds file read-in programme establishment is for after having set up model in 3DSMAX, save as the .3DS file in the triangular mesh mode, in program, need to set up the data structure of corresponding model, read file data, in 3DSMAX, draw then, export this geometry data at last to body of an instrument, and from body of an instrument, read this geometry data;
(5) the ripples line generates the Module Division of plug-in unit
Execution of program modules: one of this module creation generates the rain expression formula of effect of simulation flow surface at random, and expression formula utilizes machine time as random number seed, and time can not stop to change, and can produce randomness preferably.The size of scene two dimensional surface is set earlier in the expression formula, dropping frequency, size, quantity of virtual raindrop etc. are set, then these parameters are passed to the fluidTextureName object, so that the back module invokes;
Create the mobile texture module of the water surface: the mobile texture of a 3D of this module creation carries out the 2D simulation.By the nodename that returns, connect complementary nodal community, and the attribute on liquid surface is provided with, return liquid surface class at last, so that the back module invokes;
Main program module: this module is checked the scene type that is provided with earlier, and default type is oceanshape.At first check selected object, the title of object in the scene is returned,, obtain the entity type in the current scene by the if-else structure; The mobile texture that will obtain again returns to the execution function module with parametric form.Carry out function module and carry out ripples line effect simulation by call parameters;
(6) head model feature extracting method:
Utilization 3DS MAX for general people's face, chooses 7 unique point A-G, and wherein A, B, C, D are 4 canthus points; E is a nose; F, G are corners of the mouth point.Compare with the further feature point, these 7 points are easier to extract from image and measured.By the extraction of above unique point, determine the zone of eyes, nose, face, and draw relevant face feature parameter and set up database.
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| US9386268B2 (en) | 2012-04-09 | 2016-07-05 | Intel Corporation | Communication using interactive avatars |
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| CN108399654A (en) * | 2018-02-06 | 2018-08-14 | 北京市商汤科技开发有限公司 | It retouches in the generation of special efficacy program file packet and special efficacy generation method and device when retouching |
| CN113628328A (en) * | 2021-08-12 | 2021-11-09 | 深圳须弥云图空间科技有限公司 | Model rendering method and device for abutted seam component |
| US11295502B2 (en) | 2014-12-23 | 2022-04-05 | Intel Corporation | Augmented facial animation |
| US11887231B2 (en) | 2015-12-18 | 2024-01-30 | Tahoe Research, Ltd. | Avatar animation system |
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| US9398262B2 (en) | 2011-12-29 | 2016-07-19 | Intel Corporation | Communication using avatar |
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| CN108399654A (en) * | 2018-02-06 | 2018-08-14 | 北京市商汤科技开发有限公司 | It retouches in the generation of special efficacy program file packet and special efficacy generation method and device when retouching |
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| CN113628328A (en) * | 2021-08-12 | 2021-11-09 | 深圳须弥云图空间科技有限公司 | Model rendering method and device for abutted seam component |
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