CN106372344A - Three-dimensional clothes transformation method based on feature size constrain and system thereof - Google Patents

Abstract

The embodiment of the invention discloses a three-dimensional clothes transformation method based on feature size constrain and a system thereof. The method comprises the steps of establishing a clothes feature size constrain relation model, performing three-dimensional virtual clothes transformation based on a section ring according to the feature size constrain relation model, and performing clothes portion constrain transformation based on average value coordinates on clothes. According to the method in the embodiment, the clothes feature size constrain relation model is established, key sizes affecting the clothes appearance are classified, the constrain relation of detail sizes and key sizes of the clothes is established, further three-dimensional virtual clothes transformation based on the section ring can be performed on three-dimensional virtual clothes, the existing three-dimensional virtual clothes can be directly transformed to be suitable for the requirements of different-sized human models, and individual clothes can be generated for the different-sized human models.

Description

A kind of three-dimensional garment deformation method of feature based dimension constraint and its system

Technical field

The present invention relates to graph processing technique field, the three-dimensional garment deformation of more particularly, to a kind of feature based dimension constraint Method and its system.

Background technology

Developing rapidly with information technology, virtual reality technology is increasingly closed by people in the research of garment industry Note, the research of three-dimensional virtual garment has become as the heat subject in textile garment field.Three-dimensional garment model tries in three-dimensional The fields such as clothing, three-dimensional video display, three-dimensional network game play important role, the continuous development applied with these, three-dimensional clothes The practicality of dress emulation is self-evident with commercial value.

The virtual three-dimensional dress form being built by Computer-aided Design Technology is a complicated process, needs to expend greatly The time resource of amount.Meanwhile, the 3-D geometric model of construction has inseparable relation with buman body type, adapts to not to construct With the human body of size dress form if it is possible to directly be deformed using existing dress form so as to be met not consubstantiality The needs of the anthropometric dummy of type, not only can reuse to the carrying out of existing three-dimensional virtual garment, also will improve three-dimensional clothes The efficiency that dress builds.

Content of the invention

It is an object of the invention to overcoming the deficiencies in the prior art, the invention provides a kind of feature based dimension constraint Three-dimensional garment deformation method and its system, directly can deform to existing three-dimensional virtual garment, to adapt to different size Anthropometric dummy needs, customized clothing can be generated to different people's size body Model.

In order to solve the above problems, the present invention proposes a kind of three-dimensional garment deformation method of feature based dimension constraint, Methods described includes:

Set up the characteristic size constraint relational model of clothing；

Become according to the three-dimensional virtual garment that described characteristic size constraint relational model is carried out to described clothing based on section rings Shape；

Described clothing are carried out with the cloth part restrained deformation based on HCCI combustion.

Preferably, the step of the described characteristic size constraint relational model setting up clothing, comprising:

Set up the regression model in dress model；

Extract each characteristic curve of three-dimensional garment；

Set up the characteristic size restriction relation in three-dimensional garment deformation.

Preferably, the described three-dimensional according to described characteristic size constraint relational model, described clothing being carried out based on section rings The step of virtual costume deformation, comprising:

The length position of clothing is deformed；

Degree of the enclosing position of clothing is deformed.

Preferably, the step that the described length position to clothing is deformed, comprising:

Calculate equation, determine apex offset direction in length deformation；

Calculate apex offset amount, determine summit side-play amount respectively in the x, y and z directions.

Preferably, the step that described degree of the enclosing position to clothing is deformed, comprising:

Calculating degree of enclosing deformation factor, determines degree of the enclosing scaling size on each summit；

Calculate apex offset amount, the new coordinate of more new summit.

Correspondingly, the present invention also provides a kind of three-dimensional garment anamorphotic system of feature based dimension constraint, described system bag Include:

Model building module, for setting up the characteristic size constraint relational model of clothing；

Three-dimensional virtual garment deformation module, for carrying out base according to described characteristic size constraint relational model to described clothing Three-dimensional virtual garment deformation in section rings；

Cloth part restrained deformation module, the cloth part constraint for carrying out to described clothing based on HCCI combustion becomes Shape.

Preferably, described model building module includes:

Unit set up by model, for setting up the regression model in dress model；

Extraction unit, for extracting each characteristic curve of three-dimensional garment；

Relation sets up unit, for setting up the characteristic size restriction relation in three-dimensional garment deformation.

Preferably, described three-dimensional virtual garment deformation module includes:

Length deformation unit, for deforming to the length position of clothing；

Degree of enclosing deformation unit, for deforming to degree of the enclosing position of clothing.

Preferably, described length deformation unit is additionally operable to calculate equation, determines apex offset side in length deformation To；Calculate apex offset amount, determine summit side-play amount respectively in the x, y and z directions.

Preferably, described degree of enclosing deformation unit is additionally operable to calculating degree of enclosing deformation factor, determines that degree of the enclosing scaling on each summit is big Little；Calculate apex offset amount, the new coordinate of more new summit.

In embodiments of the present invention, establish the characteristic size constraint relational model of clothing, the pass to impact clothing profile Key size is classified, and sets up Detail of dress size and the restriction relation of critical size, opens up in two-dimensional sample plate and three-dimensional garment On the basis of flutterring geometric maps relation, derive the theoretical model of three-dimensional garment deformation, thus provide real for garment dimension deformation Apply basis, and then three-dimensional virtual garment is carried out with the three-dimensional virtual garment deformation based on section rings, the three-dimensional clothes based on section rings The principle of dress deformation is scaling and the movement of section rings, directly existing three-dimensional virtual garment can be deformed, to adapt to The needs of various sizes of anthropometric dummy, can generate customized clothing to different people's size body Models.

Brief description

In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, acceptable Other accompanying drawings are obtained according to these accompanying drawings.

Fig. 1 is the schematic flow sheet of the three-dimensional garment deformation method of the feature based dimension constraint of the embodiment of the present invention；

Fig. 2 is the process schematic of the characteristic size constraint relational model foundation of clothing in the embodiment of the present invention；

Fig. 3 is the schematic diagram of the two-dimensional sample plate and three-dimensional garment mapping on armhole in the embodiment of the present invention；

Fig. 4 is the schematic diagram of the mutual restriction relation of garment feature size in the embodiment of the present invention；

Fig. 5 is the schematic diagram solving δ x in length deformation in the embodiment of the present invention；

Fig. 6 is the calculating schematic diagram of deformation factor r in waistline deformation in the embodiment of the present invention；

Fig. 7 is the calculating schematic diagram of apex coordinate in degree of enclosing deformation in the embodiment of the present invention；

Fig. 8 is the schematic diagram of the HCCI combustion of coat-sleeve grid in the embodiment of the present invention；

Fig. 9 is the design sketch of three-dimensional garment deformation in the embodiment of the present invention；

Figure 10 is that the structure composition of the three-dimensional garment anamorphotic system of the feature based dimension constraint of the embodiment of the present invention is illustrated Figure.

Specific embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work Embodiment, broadly falls into the scope of protection of the invention.

Fig. 1 is the schematic flow sheet of the three-dimensional garment deformation method of the feature based dimension constraint of the embodiment of the present invention, such as Shown in Fig. 1, the method includes:

S1, sets up the characteristic size constraint relational model of clothing；

S2, becomes according to the three-dimensional virtual garment that characteristic size constraint relational model is carried out to described clothing based on section rings Shape；

Clothing are carried out the cloth part restrained deformation based on HCCI combustion by s3.

Wherein, as shown in Fig. 2 s1 further includes:

S11, sets up the regression model in dress model；

S12, extracts each characteristic curve of three-dimensional garment；

S13, sets up the characteristic size restriction relation in three-dimensional garment deformation.

Dress model is the planar development based on body surface, and for apparel modeling, prototype refers in plane cutting The block pattern being used, that is, simply, without any style changing factor solid type pattern tissue.Clothing design with In making, controlling position is the main portions that clothing are matched with human body, and each O. gracilipes of clothing are by known controlling position Data representation.There is regression relation between dress model two-dimensional sample plate characteristic size, and pass through two-dimensional sample plate and three-dimensional garment Between topological geometric maps come to set up for three-dimensional garment deformation characteristic size restricted model.

S11 further includes:

Size classes are carried out to dress model, according to human body controlling position and each thin position, the size of clothing is divided into directly Connect size and indirect size, it is long that direct size includes bust, waistline and clothing, indirect size refer generally to chest breadth, across back, armhole depth, Armhole width, Bei Changheqian center line length etc.；

Set up dress model characteristic size dependency relation, the pass that influences each other is had according to each thin position of human body and controlling position System, indirect size primarily as with direct size dependency relation and change.

Table 1 is the dependency relation table with net bust and height for the O. gracilipes of the embodiment of the present invention, and wherein y represents that prototype is thin Portion's size, b* is the net bust of human body, and h represents Human Height, as can be seen from Table 1 bust, height and each thin spot size of prototype Regression relation meet linear equation y=ab*+b.

Table 1 O. gracilipes and the dependency relation table of net bust and height

The each thin position of prototype	Regression equation y=ab*+b with net bust
		Chest breadth	Y=0.13b*+5.7
Across back	Y=0.13b*+6.8
		Armhole width	Y=(b*/2+6)-(0.13b*+5.7)-(0.13b*+6.8)=0.24b*-6.5
Back of the body length	Y=0.2h+6

S12 further includes:

Extract triangle grid model section rings, intersected with triangle grid model with any plane, extract the wheel of intersecting gained Profile；

Obtain each characteristic curve of clothing according to described section rings, each characteristic curve of clothing has BL BUST LINE, waist characteristic line, collar Line, armhole line, antemedial line and side seam line etc..

Extract triangle grid model section rings only need to obtain all intersection points in the face of cutting off and triangle grid model, by time Go through all triangular plates on model, each edge of triangle is all judged whether to intersect with this tangent plane, and obtains intersection point, method is such as Under: three summits setting gusset plate are v₀, v₁, v₂, judge line segment v respectively₀v₁, v₀v₂, v₁v₂Whether intersect with tangent plane, with v₀v₁For Example, the result of judgement has 3 kinds: the first, v₀.y it is equal to v₁.y it is equal to y_cross, v is described₀, v₁On tangent plane.Second: work as y_cross It is in v₀And v .y₁.y between, line segment and tangent plane have an intersection point, and coordinate is formula:

$x=\frac{y_{corss}-v_0.y}{v_1.y-v_0.y}\×(v_1.x-v_0.x)+v_1.x$

Y=y_cross

$z=\frac{y_{corss}-v_0.y}{v_1.y-v_0.y}\×(v_1.z-v_0.z)+v_1.z$

Obtain the intersection point of triangle each edge and tangent plane with the method, generally, intersection point sum is 2, except only a few Triangle overlapping with tangent plane (probability very little), the line of this two intersection points is exactly the intersection of triangle and tangent plane.The third: if It is unsatisfactory for the above two situation, then line segment and tangent plane no intersection point.Finally it is sequentially connected each intersection point, you can obtain current cross-section ring.

S13 further includes:

Set up the mapping relations of the detail characteristic in two-dimentional prototype and the feature structure line on three-dimensional garment；

Set up characteristic size in three-dimensional garment deformation according to described mapping relations and two-dimentional prototype feature size dependency relation Mutual restriction relation.

, it is on armhole line in the three-dimensional garment feature structure line having found taking armhole as a example, look for along armhole line from left shoulder point To the coupling with the curve of same color in X-Y scheme, Fig. 3 is the two-dimensional sample plate of the embodiment of the present invention and three-dimensional garment in armhole On mapping schematic diagram.

On the basis of the Numerical regression relation with critical size for O. gracilipes each in two-dimentional prototype, establish three-dimensional clothes The mutual restriction relation of characteristic size in dress deformation, as shown in Figure 4.

S2 further includes:

The length position of clothing is deformed；

Degree of the enclosing position of clothing is deformed.

Wherein, length includes the sleeve length of clothing, clothing length and trousers length equal length position, and degree of enclosing includes the bust of clothing, waistline Degree of the enclosing position such as enclose with sleeve.

The step that the length position of clothing is deformed, comprising:

Calculate equation, determine apex offset direction in length deformation；

Calculate apex offset amount, determine summit side-play amount respectively in the x, y and z directions.

Two point v of lie farthest away taking sleeve length deformation as a example it is assumed that on sleeve₀And v₁, between straight line, i.e. axis, root According to the coordinate v with 2 points₀And v₁Obtain straight line v₀v₁Equation:

$\frac{x-v_{0x}}{v_{1x}-v_{0x}}=\frac{y-v_{0y}}{v_{1y}-v_{0y}}=\frac{z-v_{0z}}{v_{1z}-v_{0z}}$

Above formula can be decomposed into two linear equations of xoy plane and xoz plane:

Y=a₁x+b₁, whereinb₁=v_1y-a₁v_1x

Z=a₂x+b₂, whereinb₂=v_1z-a₂v_1z

Assume that left sleeve raw footage is l₀, l to be deformed into₁, can get proportional factor r is:

$r=\frac{l_1}{l_0}$

Value according to r is it may be determined that all summits side-play amount in the x, y and z directions respectively on sleeve.Assume certain summit For m, point m offset delta x in the x direction is obtained on xoy plane first, then utilize xoy plane described above and xoz to put down Two linear equations in face can obtain offset delta y and δ z in the y and z directions.M point offset delta x in the x direction Can be obtained by method shown in Fig. 5, wherein m ', v '₁、v′₀₁For m, v₁、v₀It is projected in the point in xoy plane.N ' and n " is a little M ', m " arrives the intersection point of straight line.

M " is the position after m ' skew, according to Fig. 5, can obtain equation below:

$\frac{\mathrm{\δ}x+d}{d}=r$

δ x=d (1-r) can be obtained, wherein r byBe given, d is abscissa and the v of n '₀Abscissa difference, the horizontal stroke of n ' Coordinate is:According to the δ x trying to achieve, in conjunction with formula described above, the δ y and value of δ z: δ can be obtained Y=a₁δ x, whereinδ z=a₂δ x, wherein

After trying to achieve the side-play amount (δ x, δ y, δ z) of certain point, original coordinate is added respectively each coordinate direction On side-play amount can be deformed after this point coordinate figure, on traversal sleeve, all of summit carries out same calculating operation The length deformation to sleeve can be completed.

The step that degree of the enclosing position of clothing is deformed, comprising:

Calculating degree of enclosing deformation factor, determines degree of the enclosing scaling size on each summit；

Calculate apex offset amount, the new coordinate of more new summit.

For degree of enclosing deformation, need to consider seamlessly transitting between different parts, the deformation factor on different summits needs root The position that is located according to it and different, calculate degree of enclosing deformation factor taking the deformation of waistline as a example to illustrate.

Waistline deforms constraining of bust be subject to and hip circumference, therefore the determination of deformation factor r and summit and this two parts Position is relevant.Assume that original waistline is l₀, target waistline is l₁, then the structural strain's factor beIn order to realize smoothing Transition, is defined to deformation factor with SIN function, as shown in fig. 6, two SIN functions of segmentation definition here, and protect Card piecewise function continuously can be led, and concrete form is shown in formula

Wherein,

Summit deformation factor in the x, y, z-directions is obtained according to said method, in conjunction with the equation of different parts, The side-play amount on summit just can be calculated, thus after being deformed new summit coordinate.It is deformed into the degree of enclosing of sleeve below Example is calculating the side-play amount on summit.

As shown in fig. 7, setting v₀v₁For the axis of sleeve, m is a summit on sleeve, and m ' deforms it for sleeve degree of enclosing The position of m afterwards.Cross point m and make v₀v₁Vertical line, intersection point be k.In known v₀v₁With in the case of the coordinate of point m it is possible to quickly ask Go out the coordinate of k, afterwards according to formula

$\frac{{m_x}^{\′}-k_x}{m_x-k_x}=r_x\→{m_x}^{\′}=r_x(m_x-k_x)+k_x$

Calculate the x-axis coordinate of m ', the y-axis of m ' and z-axis coordinate in the same manner can be in the hope of.

Original coordinate is updated to the coordinate of the summit new summit on all sleeves, you can the degree of enclosing completing sleeve becomes Shape.

The equation of edge-restraint condition in being embodied as, in s3, is met based on HCCI combustion construction；Equation is asked Solution.

Taking the constraint to sleeve as a example, in clothing deformation process, can be specifically described as: construct new coat-sleeve c ' so as to and c There is identical topological structure as far as possible, then meet the constraint of below equation:

$\begin{array}{cc}{\mathrm{\δc}}^{\′}=div\▿c,dirichletboundarycondition& \∂c^{\′}=\∂g^{\′}\end{array}$

This formula represents that the gradient field of c ' keeps constant, consistent with c as much as possible, and Dirichlet condition constraint shows C ', the border of g ' be mated completely.Above-mentioned formula is converted into the Laplace's equation (laplace solving below equation Equation):

$\begin{array}{cc}\mathrm{\δ}\tilde{c}=0,dirichletboundarycondition& \∂\tilde{c}=\∂g-\∂c\end{array}$

Wherein,It is defined in the transfer function (i.e. harmonic function, harmonic function) on c.Through processing, Final result just can be expressed as the form of below equation:

$c^{\′}=c+\tilde{c}$

Therefore, the key of problem is that how to solve and meets edge-restraint conditionHarmonic function

First, it is that summit on sleeve defines its HCCI combustion.AssumeSuccessively by point p₁, p₂..., p_m (p_i∈r³) composition, as shown in figure 8, the HCCI combustion on summit is on coat-sleeve grid:

${\mathrm{\λ}}_i\left(x\right)={\mathrm{\ω}}_i\left(x\right)/\underset{j=1}{\overset{n}{\σ}}{\mathrm{\ω}}_j\left(x\right)$

Wherein, weight equation is defined as follows:

${\mathrm{\ω}}_i\left(x\right)=\frac{1}{\left|\right|p_i-x\left|\right|}(tan\frac{{\mathrm{\α}}_i}{2}+tan\frac{{\mathrm{\α}}_{i-1}}{2})$

Wherein, α_iRepresent ∠ p_ixp_i+1Angle.

It is possible to construct feasible transfer function after setting up HCCI combustion for each coat-sleeve summitFor interpolation.Assume V is a summit on coat-sleeve, when we ignore the original topological structure of vertex v, the border of c is considered as its adjacent ring, so Its HCCI combustion can be calculated afterwards according to above-mentioned formula.Characteristic according to HCCI combustion, then for the harmonic function of interpolationThen definable is as shown by the equation:

$\tilde{c}\left(v\right)=\underset{i=1}{\overset{m}{\σ}}{\mathrm{\λ}}_i\left(v\right)(\∂g-\∂c)\left(p_i\right)$

The harmonic function being obtained by make has closing solution's expression it is only necessary to solve, and it is big not spend solution The system of linear equations of scale.

Finally, it is possible to obtain the coordinate on all summits on coat-sleeve after deformation.

Fig. 9 is the design sketch of the three-dimensional garment deformation of the embodiment of the present invention.The data being given from figure can be seen that to be passed through The embodiment of the present invention, it is possible to obtain the related constraint effect of more preferably degree of enclosing deformation, length deformation and deformation.

Correspondingly, the embodiment of the present invention also provides a kind of three-dimensional garment anamorphotic system of feature based dimension constraint, such as schemes Shown in 10, this system includes:

Model building module 1, for setting up the characteristic size constraint relational model of clothing；

Three-dimensional virtual garment deformation module 2, for being based on to described clothing according to characteristic size constraint relational model The three-dimensional virtual garment deformation of section rings；

Cloth part restrained deformation module 3, for carrying out the cloth part restrained deformation based on HCCI combustion to clothing.

Wherein, model building module 1 includes:

Unit set up by model, for setting up the regression model in dress model；

Extraction unit, for extracting each characteristic curve of three-dimensional garment；

Relation sets up unit, for setting up the characteristic size restriction relation in three-dimensional garment deformation.

Three-dimensional virtual garment deformation module 2 includes:

Length deformation unit, for deforming to the length position of clothing；

Degree of enclosing deformation unit, for deforming to degree of the enclosing position of clothing.

Further, length deformation unit is additionally operable to calculate equation, determines apex offset direction in length deformation； Calculate apex offset amount, determine summit side-play amount respectively in the x, y and z directions.

Degree of enclosing deformation unit is additionally operable to calculating degree of enclosing deformation factor, determines degree of the enclosing scaling size on each summit；Calculate summit The new coordinate of side-play amount, more new summit.

In the system embodiment of the present invention, the function of each functional module can be found at the flow process in the inventive method embodiment Reason, repeats no more here.

Implement the embodiment of the present invention, during size distortion is carried out to three-dimensional virtual garment, initially set up clothing Characteristic size constraint relational model, to impact clothing profile critical size classify, and set up Detail of dress size and The restriction relation of critical size, on the basis of two-dimensional sample plate and three-dimensional garment topology geometric maps relation, then derives three-dimensional The theoretical model of clothing deformation, thus deform for garment dimension providing practice processes, and then is based on to three-dimensional virtual garment The three-dimensional virtual garment deformation of section rings, the principle of the three-dimensional garment deformation based on section rings is scaling and the movement of section rings. The deformation of clothing length is mainly and changes respective cross-section ring spacing, and the deformation of clothing degree of enclosing is mainly gained section rings with center Bi-directional scaling on the basis of point, and keeping and the seamlessly transitting of surrounding section rings, thus efficiently reality takes to three-dimensional It is contained in the deformation of degree of enclosing and length.Clothing are carried out with the cloth part restrained deformation based on HCCI combustion again, each thin according to human body There is the relation that influences each other in position and controlling position, when clothing critical size changes, can lead to rely on this critical size O. gracilipes change a lot.Using the deformation method based on HCCI combustion, to reach the restrained deformation between position.By Possess the feature of barycentric coodinates, such as affine-invariant features, slickness, locality etc. in HCCI combustion, these features make all Value coordinate can play good effect in interpolation calculation.Thus the reality restrained deformation at three-dimensional virtual garment position.Energy Enough existing three-dimensional virtual garment is allowed to deform according to the CD data of user input, generation can preferably be suitable for target The clothing of anthropometric dummy, can generate customized clothing to different anthropometric dummies.

One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is can Completed with the hardware instructing correlation by program, this program can be stored in a computer-readable recording medium, storage Medium may include that read only memory (rom, read only memory), random access memory (ram, random Access memory), disk or CD etc..

In addition, the above three-dimensional garment deformation method of feature based dimension constraint that the embodiment of the present invention is provided and its System is described in detail, and specific case used herein is set forth to the principle of the present invention and embodiment, with The explanation of upper embodiment is only intended to help and understands the method for the present invention and its core concept；General simultaneously for this area Technical staff, according to the thought of the present invention, all will change in specific embodiments and applications, in sum, This specification content should not be construed as limitation of the present invention.

Claims (10)

1. a kind of three-dimensional garment deformation method of feature based dimension constraint is it is characterised in that methods described includes:

Set up the characteristic size constraint relational model of clothing；

According to described characteristic size constraint relational model, described clothing are carried out with the three-dimensional virtual garment deformation based on section rings；

Described clothing are carried out with the cloth part restrained deformation based on HCCI combustion.

2. the three-dimensional garment deformation method of feature based dimension constraint as claimed in claim 1 is it is characterised in that described foundation The step of the characteristic size constraint relational model of clothing, comprising:

Set up the regression model in dress model；

Extract each characteristic curve of three-dimensional garment；

Set up the characteristic size restriction relation in three-dimensional garment deformation.

3. the three-dimensional garment deformation method of feature based dimension constraint as claimed in claim 1 is it is characterised in that described basis The step that described characteristic size constraint relational model carries out the three-dimensional virtual garment deformation based on section rings to described clothing, bag Include:

The length position of clothing is deformed；

Degree of the enclosing position of clothing is deformed.

4. feature based dimension constraint as claimed in claim 3 three-dimensional garment deformation method it is characterised in that described to clothes The step that the length position of dress is deformed, comprising:

Calculate equation, determine apex offset direction in length deformation；

Calculate apex offset amount, determine summit side-play amount respectively in the x, y and z directions.

5. feature based dimension constraint as claimed in claim 3 three-dimensional garment deformation method it is characterised in that described to clothes The step that degree of the enclosing position of dress is deformed, comprising:

Calculating degree of enclosing deformation factor, determines degree of the enclosing scaling size on each summit；

Calculate apex offset amount, the new coordinate of more new summit.

6. a kind of three-dimensional garment anamorphotic system of feature based dimension constraint is it is characterised in that described system includes:

Model building module, for setting up the characteristic size constraint relational model of clothing；

Three-dimensional virtual garment deformation module, cuts for carrying out to described clothing being based on according to described characteristic size constraint relational model The three-dimensional virtual garment deformation of face ring；

Cloth part restrained deformation module, for carrying out the cloth part restrained deformation based on HCCI combustion to described clothing.

7. the three-dimensional garment anamorphotic system of feature based dimension constraint as claimed in claim 6 is it is characterised in that described model Set up module to include:

Unit set up by model, for setting up the regression model in dress model；

Extraction unit, for extracting each characteristic curve of three-dimensional garment；

Relation sets up unit, for setting up the characteristic size restriction relation in three-dimensional garment deformation.

8. the three-dimensional garment anamorphotic system of feature based dimension constraint as claimed in claim 6 is it is characterised in that described three-dimensional Virtual costume deformation module includes:

Length deformation unit, for deforming to the length position of clothing；

Degree of enclosing deformation unit, for deforming to degree of the enclosing position of clothing.

9. the three-dimensional garment anamorphotic system of feature based dimension constraint as claimed in claim 8 is it is characterised in that described length Deformation unit is additionally operable to calculate equation, determines apex offset direction in length deformation；Calculate apex offset amount, determine top Point side-play amount in the x, y and z directions respectively.

10. the three-dimensional garment anamorphotic system of feature based dimension constraint as claimed in claim 8 is it is characterised in that described enclose Degree deformation unit is additionally operable to calculating degree of enclosing deformation factor, determines degree of the enclosing scaling size on each summit；Calculate apex offset amount, update The new coordinate in summit.