CN107945285A - A kind of threedimensional model is exchanged cards containing all personal details and become sworn brothers figure and deformation method - Google Patents
A kind of threedimensional model is exchanged cards containing all personal details and become sworn brothers figure and deformation method Download PDFInfo
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- G06T19/20—Editing of 3D images, e.g. changing shapes or colours, aligning objects or positioning parts
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Abstract
Exchange cards containing all personal details and become sworn brothers figure and deformation method the invention discloses a kind of threedimensional model, including establishing standard three-dimensional model, set bone Bind Skin, making standard textures simultaneously obtain standard feature data, obtain example photograph and example aspects data, topology deformation is done to example photograph to be allowed to overlap in key point with standard textures and become example textures, combined with example textures alternate standard textures with covering, pass through analysis example characteristic and the difference of standard feature data, relevant bone is allowed to do scaling rotation, so as to processes such as driving model skin morphs, finally model is changed photograph as textures and deformed, it is set to seem similar to example.This deformation method has the advantages that easy to operate, textures and Model Matching are accurate, model deformation is accurate, it is easy to realize.
Description
Technical field
The present invention relates to a kind of threedimensional model configuration control method, belongs to software systems threedimensional model control field, according to
We are named as " photograph driving deformation method " its feature, and this control mode pastes threedimensional model suitable for various software systems
The replacement of figure and the control of shape, the Deformation control particularly suitable for the threedimensional model of the complexity such as human body.
Background technology
There are various threedimensional models to exchange cards containing all personal details and become sworn brothers figure and deformation method in current software system, it usually needs to pass through specialty figure
Piece processing software, which does textures intense adjustment, can just match on threedimensional model, otherwise easily produce obvious matching dislocation；Three
The deformation of dimension module usually will carry out three-dimensional measurement to example, deformed by complicated calculating driving model, it is necessary to specific
Equipment and complicated flow；Or directly modeled by 3-D scanning, the model meshes of different instances are inconsistent, can not be with standard
Dress form etc. is freely arranged in pairs or groups；Other can only be deformed without the phase for textures being changed into object by way of transformation of data
Piece.The above method usually wants mainframe computer or server end high-performance computer to realize, it is impossible to meets normal with mobile phone etc.
Be with equipment carrier daily use in.
The content of the invention
In order to solve easily to carry out model in the commonly used equipments such as existing mobile phone by instance objects replace textures and
3 D deformation is carried out, makes model close to instance objects, the various applications such as change the outfit so as to fulfill such as human body, make up, restyling the hair；This hair
The bright one kind that provides can carry out model in software application to replace textures by example by the common smart machine realization such as mobile phone
With the method for carrying out 3 D deformation.
The technical measures implemented above-mentioned purpose of the present invention and used are as described below：
A kind of threedimensional model is exchanged cards containing all personal details and become sworn brothers figure and deformation method, is mainly included the following steps：
1）The standard three-dimensional model covering of object, model covering are established by the standard shape of object or the average-size of key feature
The grid surface surrounded by the grid lines between mesh point, neighbor mesh points, adjacent net ruling forms；
2）The demand for being deformed and being acted according to object model establishes model skeletal system, model skeletal system by it is multiple in father and son or
The model bone composition of brotherhood, drives corresponding mesh point by the scaling on each dimension direction, rotation and displacement respectively
Deformation, so as to drive grid lines and grid facial disfigurement；
3）Same mesh point can be driven by one or more model bones, set each model bone to drive net by weight
The ability ratio of lattice point；
4）From standard viewing angle direction expansion model covering into plane, selected part is located on contour line, turnover face and crosspoint
Mesh point as feature key points, the position coordinates of feature key points, save as standard feature data；
5）The example photograph of model application is obtained by standard viewing angle, in the setting of example phase on piece and plane model covering
The position coordinates of feature key points, is saved as example aspects data by the corresponding feature key points of feature key points；
6）Two-dimensional topology deformation is carried out to example photograph, the feature key points in example photograph is moved to plane model covering
The position of middle character pair key point, it is example textures to preserve the deformed example photograph of topology；
7）After being bonded with example textures with plane model covering, threedimensional model surface is attached to after reverse 3 D deformation, and
Each feature key points key feature points corresponding with model covering form coincidence relation.
8）By calculating the difference of analysis example characteristic and standard feature data, relevant bone is allowed to scale, revolve
Turn or displacement so that driving model skin morph, the example textures for making to be attached on model covering from standard viewing angle seem with
Example photograph before topology deformation is similar, preserves bone driving supplemental characteristic.
9) when calling the threedimensional model of the instance objects every time, fitted with example textures and model covering, use is corresponding
Bone driving data drives bone, you can model is become very much like with instance objects.
Further, the profile on the model covering and example photo after expansion flattens, corner and intersection lighting punishment
Do not set corresponding key feature points, with the wire segmenting example photograph between feature key points and feature critical key point, pass through by
Feature key points in example photograph are moved to the side at the coordinate of character pair key point in the model covering after expansion flattens
Formula carries out two-dimensional topology deformation to each divided region of example photograph, synthesizes new picture as example textures.
Further, by calculating the difference of analysis example characteristic and standard feature data, relevant model bone is allowed
Bone scaling, rotation or displacement, so that driving model skin morph, make the example textures that are attached on model covering from standard viewing angle
Seem similar to before the topology deformation of example photograph.
Further, a hyaline layer is covered by the top of the model covering after expansion flattens, added in hyaline layer
Addend marks point, it is alignd respectively with the feature key points in model covering, and preserves the standard coordinate of these mark points
Value is used as standard feature data；Example photograph is imported below hyaline layer, then corresponding in the mobile alignment example photograph of mark point
Feature key points at, preserve these mark point coordinate value as example aspects data.
Further, standard feature data can be obtained by the measurement to model's covering after flattening in advance, by direct
One hyaline layer of top covering above example photograph, the coordinate value addition mark point in hyaline layer in characteristic,
Standard point is moved corresponding feature key points in alignment example textures by user again, preserves the coordinate value of these mark points as real
Example characteristic.
Further, another example example of the invention is that directly the feature key points of example photograph are carried out by software
Feature recognition, obtains the coordinate value of feature key points as example aspects data.
Further, yet another embodiment of the present invention is that a model is covered by the expansion model at multiple and different visual angles
Skin, and the example photograph at corresponding visual angle is obtained, the standard feature data and example aspects number of different visual angles are obtained with as above method
According to；Topological deformation and synthesis are carried out to every example photograph again, makes its various and the key feature dot tackled on model covering
Into coincidence relation；The difference of comprehensive calculation and analysis example aspects data and standard feature data, allow relevant model bone to scale,
Rotation or displacement, so that driving model skin morph, the example textures for making to be attached on model covering seem from above-mentioned visual angle
It is similar before example photograph topology deformation corresponding with the visual angle.
Further, by the way that example phase panel region between feature key points done further gridding, or set more
Feature key points and, make example photograph topology deformation formed example textures it is smoother soft.
Further, another embodiment of this method is to first pass through software to carry out spy to the feature key points of example photograph
Sign identification, in the hyaline layer that the result of identification is shown in above example photograph by marking point, then manually adjusts position and does not have pair
Accurate mark point, preserves the coordinate value of mark point as example aspects data.
It was found from These characteristics, the present invention program relatively has the following advantages with existing technical solution：
1st, by characteristic point move driving example textures topology deformation so as to model skin alignment, it is easy to operate, it is accurate to putting；
2nd, analysis is compared by characteristic point and obtains bone driving parameter, make model deformation similar to example, program is simple, in mobile phone
Deng can be achieved on commonly used equipment, without networking；
3rd, it is easy to operate by the manual moving characteristic point acquisition example aspects data above picture, without professional equipment；
4th, can first automatic program identification characteristic point, then correct by hand, improve the accuracy of characteristic；
5th, program is simple, and operand is few, while implementation model deformation and textures are replaced.
Known as described above, compared with the prior art a kind of threedimensional model of the invention exchanges cards containing all personal details and become sworn brothers figure and deformation method, has
It is easy to operate and efficient, textures and Model Matching are accurate, model deformation is accurate, without professional equipment, realize the advantages that easy.
Brief description of the drawings
Fig. 1 is the operating procedure flow chart of the present invention；
Fig. 2 is the schematic diagram of one embodiment of the invention model covering and bone；
Fig. 3 is the schematic diagram of addition mark point after the expansion of Fig. 2 embodiments covering flattens；
Fig. 4 is the schematic diagram after the example photograph movement mark point alignment key feature points of Fig. 2 embodiments；
Fig. 5 is that the example photograph in Fig. 4 becomes example textures and the signal of the model covering pairing after expansion after topology deforms
Figure；
Fig. 6 attaches example textures and with the deformed schematic diagram of bone driving model for Fig. 2 embodiments；
Fig. 7 is the schematic diagram when embodiment photograph for having more key feature points is labeled.
Embodiment
The principle of the present invention is further described presently in connection with preferred embodiment shown in the drawings.
From Fig. 1, Fig. 2 and Fig. 3, the invention mainly comprises following steps：
1）The standard three-dimensional model covering 1 of object is established by the standard shape of object or the average-size of key feature, model covers
Skin 1 is made of the grid surface that the grid lines between mesh point 11, neighbor mesh points, adjacent net ruling surround；
2）The demand for being deformed and being acted according to object model establishes model skeletal system 2, model skeletal system by it is multiple be in father and son
Or the model bone 21 of brotherhood forms, corresponding net is driven by the scaling on each dimension direction, rotation and displacement respectively
Lattice point 11 deforms, so as to drive corresponding grid lines and grid facial disfigurement；
3) same mesh point 11 can be driven by one or more model bones 21, and each model bone is set by weight
The ability ratio of 21 driving mesh points 11；
4) from standard viewing angle direction expansion model covering 1 into plane, selected part is located at contour line, turnover face and crosspoint
On mesh point 11 be used as feature key points 12, the position coordinates of feature key points 12 is saved as standard feature data；
5）The example photograph 3 of model application is obtained by standard viewing angle, is set and plane model covering on example photograph 3
The position coordinates of feature key points 32, is saved as example aspects data by the corresponding feature key points 32 of feature key points 12 on 1；
6）Two-dimensional topology deformation is carried out to example photograph 3, the feature key points 32 in example photograph 3 is moved to plane model
The position of character pair key point 12 in covering 1, it is example textures 4 to preserve the deformed example photograph 3 of topology；
7）After being bonded with example textures 4 with plane model covering, threedimensional model surface is attached to after reverse 3 D deformation,
And each feature key points 32 key feature points 12 corresponding with model covering form coincidence relation.
8）By calculating the difference of analysis example characteristic and standard feature data, allow relevant bone 21 to scale,
Rotation or displacement, so that driving model covering 1 deforms, the example textures 4 for making to be attached on model covering 1 are from terms of standard viewing angle
It is similar to carry out the example photograph 3 before being deformed to topology, preserves bone driving supplemental characteristic.
9) when calling the threedimensional model of the instance objects every time, fitted with example textures 4 and model covering 1, with correspondence
Bone driving data driving bone 11, you can model is become very much like with instance objects.
From Fig. 3, Fig. 4 and Fig. 5, profile, corner on the model covering 1 and example photo 3 after expansion flattens and
Intersect and set corresponding key feature points 12 and 32 respectively at lighting, with the line between feature key points 32 and feature critical key point
Split example photograph 3, it is right in the model covering 1 after expansion flattens by the way that the feature key points 31 in example photograph 3 are moved to
Answer the mode at the coordinate of feature key points 12 to carry out two-dimensional topology deformation to each divided region of example photograph 3, close
The picture of Cheng Xin is as example textures.
It will be appreciated from fig. 6 that the difference by calculating analysis example characteristic and standard feature data, relevant model bone is allowed
Bone 21 is scaled, rotates or shifted, so that driving model covering 1 deforms, makes the example textures 4 that are attached on model covering 1 from mark
Quasi- visual angle seems similar to before the topology deformation of example photograph 3.
From Fig. 3 and Fig. 4, a hyaline layer is covered by the top of the model covering 1 after expansion flattens, transparent
Several mark points 51 are added in layer, it is alignd respectively with the feature key points 12 in model covering 1, and preserve these mark points
51 standard coordinate value is as standard feature data；Example photograph 3 is imported below hyaline layer, then 51 movement of mark point is aligned
In example photograph 3 at corresponding feature key points 32, the coordinate value of these mark points 51 is preserved as example aspects data.
From Fig. 3 and Fig. 4, standard feature data can be obtained by the measurement to model's covering 1 after flattening in advance, be led to
One hyaline layer of covering directly above example photograph 3 is crossed, the coordinate value addition mark in hyaline layer in characteristic 13
Note point 51, standard point 51 is moved corresponding feature key points 32 in alignment example textures 3 by user again, preserves these mark points 51
Coordinate value as example aspects data.
Another example example of the present invention is directly to carry out feature knowledge to the feature key points 32 of example photograph 3 by software
Not, the coordinate value of feature key points 32 is obtained as example aspects data.
Yet another embodiment of the present invention is the expansion model covering 1 by multiple and different visual angles a model, and is obtained
The example photograph 3 at corresponding visual angle, the standard feature data and example aspects data of different visual angles are obtained with as above method；Again to every
Open example photograph 3 and carry out topological deformation and synthesis, make its various and overlapped with the formation of key feature points 12 tackled on model covering 1
Relation；The difference of comprehensive calculation and analysis example aspects data and standard feature data, allows relevant model bone 21 to scale, rotate
Or displacement, so that driving model covering 1 deforms, the example textures 4 for making to be attached on model covering 1 seem equal from above-mentioned visual angle
It is similar before the topology of example photograph 3 deformation corresponding with the visual angle.
As shown in Figure 7, by the way that example phase panel region between feature key points 32 done further gridding, or set more
More feature key points 32 and 12, make the example textures 4 that the topology deformation of example photograph 3 is formed smoother soft.
First pass through software and feature recognition is carried out to the feature key points 32 of example photograph 3, the result of identification is passed through mark
Point 51 is shown in the hyaline layer of the top of example photograph 3, then manually adjusts position and the mark point 51 not being aligned, and preserves mark point 51
Coordinate value as example aspects data.
Compared with the prior art, a kind of threedimensional model of the present invention exchange cards containing all personal details and become sworn brothers figure and deformation method have it is easy to operate again
Efficiently, textures and Model Matching are accurate, model deformation is accurate, without professional equipment, realize the advantages that easy.
The present invention only illustrates some preferred embodiments in the present specification, is not that it is limited.The professional technician
Design and spirit can make various changes or modification in appearance according to the present invention, such as change the sample of mark icon
Formula, example textures are done with further landscaping treatment, that model covering is superimposed upon using multilayer textures is first-class, therefore these should belong to
Protection scope of the present invention.
Claims (9)
- Figure and deformation method 1. a kind of threedimensional model is exchanged cards containing all personal details and become sworn brothers, include the following steps：1）The standard three-dimensional model covering of object is established by the standard shape of object or the average-size of key feature（1）, model Covering（1）By mesh point（11）, the grid surface composition that surrounds of grid lines, adjacent net ruling between neighbor mesh points；2）The demand for being deformed and being acted according to object model establishes model skeletal system（2）, model skeletal system by it is multiple be in father The model bone of son or brotherhood（21）Composition, is corresponded to by the scaling on each dimension direction, rotation and displacement driving respectively Mesh point（11）Deformation, so as to drive corresponding grid lines and grid facial disfigurement；3) same mesh point（11）Can be by one or more model bones（21）Driving, each model is set by weight Bone（21）Drive mesh point（11）Ability ratio；4) from standard viewing angle direction expansion model covering（1）Into plane, selected part is located at contour line, turnover face and intersection Mesh point on point（11）As feature key points（12）, feature key points（12）Position coordinates, save as standard feature Data；5）The example photograph of model application is obtained by standard viewing angle（3）, in example photograph（3）Upper setting and plane model Covering（1）Upper feature key points（12）Corresponding feature key points（32）, feature key points（32）Position coordinates save as Example aspects data；6）To example photograph（3）Two-dimensional topology deformation is carried out, makes example photograph（3）In feature key points（32）It is moved to plane Character pair key point in the model covering of shape（12）Position, preserve the deformed example photograph of topology（3）For example textures （4）；7）With example textures（4）After being bonded with plane model covering, threedimensional model surface is attached to after reverse 3 D deformation, And each feature key points（32）Key feature points corresponding with model covering（12）Form coincidence relation；8）By calculating the difference of analysis example characteristic and standard feature data, relevant bone is allowed（21）Scale, revolve Turn or shift, so that driving model covering（1）Deformation, makes to be attached to model covering（1）On example textures（4）From standard viewing angle Seem and the example photograph before topology deformation（3）It is similar, preserve bone driving supplemental characteristic；9) when calling the threedimensional model of the instance objects every time, with example textures（4）With model covering（1）Fit, with correspondence Bone driving data driving bone（11）, you can model is become very much like with instance objects.
- Figure and deformation method 2. threedimensional model according to claim 1 is exchanged cards containing all personal details and become sworn brothers, it is characterised in that：Mould after expansion flattens Type covering and profile on example photo, corner and intersect and set corresponding key feature points respectively at lighting（12、32）, with spy Levy key point（32）And the wire segmenting example photograph between feature critical key point（3）, by by example photograph（3）In feature close Key point（31）It is moved to the model covering after expansion flattens（1）Middle character pair key point（12）Coordinate at mode to example Photograph（3）Each be divided region carry out two-dimensional topology deformation, synthesize new picture as example textures（4）.
- Figure and deformation method 3. threedimensional model according to claim 1 is exchanged cards containing all personal details and become sworn brothers, it is characterised in that：By calculating analysis example The difference of characteristic and standard feature data, allows relevant model bone（21）Scaling, rotation or displacement, so that driving model Covering（1）Deformation, makes to be attached to model covering（1）On example textures（4）Seem and example photograph from standard viewing angle（3）Open up Flutter similar before deforming.
- Figure and deformation method 4. threedimensional model according to claim 1 is exchanged cards containing all personal details and become sworn brothers, it is characterised in that：By after expansion flattens Model covering（1）Top cover a hyaline layer, several mark points are added in hyaline layer（51）, make its respectively with model Covering（1）In feature key points（12）Alignment, and preserve these mark points（51）Standard coordinate value as standard feature number According to；Example photograph is imported below hyaline layer（3）, then mark point（51）Mobile alignment example photograph（3）In corresponding feature Key point（32）Place, preserves these mark points（51）Coordinate value as example aspects data.
- Figure and deformation method 5. threedimensional model according to claim 1 is exchanged cards containing all personal details and become sworn brothers, it is characterised in that：The standard feature data Can be in advance by model's covering after flattening（1）Measurement obtain, by directly in example photograph（3）Top covers one thoroughly Bright layer, according to characteristic in hyaline layer（13）In coordinate value addition mark point（51）, user is again standard point（51）Move Dynamic alignment example textures（3）In corresponding feature key points（32）, preserve these mark points（51）Coordinate value it is special as example Levy data.
- Figure and deformation method 6. threedimensional model according to claim 1 is exchanged cards containing all personal details and become sworn brothers, it is characterised in that：By software directly to reality Example photograph（3）Feature key points（32）Feature recognition is carried out, obtains feature key points（32）Coordinate value as example aspects Data.
- Figure and deformation method 7. threedimensional model according to claim 1 is exchanged cards containing all personal details and become sworn brothers, it is characterised in that：A model by multiple The expansion model covering of different visual angles（1）, and obtain the example photograph at corresponding visual angle（3）, different visual angles are obtained with as above method Standard feature data（With example aspects data；Again to every example photograph（3）Topological deformation and synthesis are carried out, makes its various With model covering（1）The key feature points of upper reply（12）Form coincidence relation；Comprehensive calculation and analysis example aspects data and mark The difference of quasi- characteristic, allows relevant model bone（21）Scaling, rotation or displacement, so that driving model covering（1）Deformation, Make to be attached to model covering（1）On example textures（4）Seem example photograph corresponding with the visual angle from above-mentioned visual angle（3） It is similar before topology deformation.
- Figure and deformation method 8. threedimensional model according to claim 1 is exchanged cards containing all personal details and become sworn brothers, it is characterised in that：By by feature key points （32）Between example phase panel region do further gridding, or more feature key points are set（32）With（12）, make example Photograph（3）The example textures that topology deformation is formed（4）It is smoother soft.
- Figure and deformation method 9. another kind threedimensional model according to claim 1 is exchanged cards containing all personal details and become sworn brothers, it is characterised in that：First pass through software To example photograph（3）Feature key points（32）Feature recognition is carried out, the result of identification by marking a little（51）It is shown in reality Example photograph（3）In the hyaline layer of top, then manually adjust position and the mark point not being aligned（51）, preserve mark point（51）Coordinate Value is used as example aspects data.
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