CN107292964A - A kind of three-dimensional virtual garment self-gating compensation method - Google Patents

A kind of three-dimensional virtual garment self-gating compensation method Download PDF

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Publication number
CN107292964A
CN107292964A CN201710398383.6A CN201710398383A CN107292964A CN 107292964 A CN107292964 A CN 107292964A CN 201710398383 A CN201710398383 A CN 201710398383A CN 107292964 A CN107292964 A CN 107292964A
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China
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ring
msub
dimensional virtual
mrow
virtual garment
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CN201710398383.6A
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CN107292964B (en
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李端
钟跃崎
毋戈
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Donghua University
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Donghua University
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
    • G06T17/20—Finite element generation, e.g. wire-frame surface description, tesselation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T15/00—3D [Three Dimensional] image rendering
    • G06T15/10—Geometric effects
    • G06T15/20—Perspective computation
    • G06T15/205—Image-based rendering

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Graphics (AREA)
  • Geometry (AREA)
  • General Physics & Mathematics (AREA)
  • Software Systems (AREA)
  • Computing Systems (AREA)
  • Details Of Garments (AREA)
  • Outer Garments And Coats (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)

Abstract

The invention provides a kind of three-dimensional virtual garment self-gating compensation method, it is characterised in that comprises the following steps：It is different parts by source three-dimensional virtual garment mesh segmentation；By the three-dimensional virtual garment after dress, use level face carries out ring cutting from top to bottom, and three-dimensional virtual garment various pieces cuts ring after being worn；The intersecting ring of cutting that has of different piece is found, and records phase meet ring and intersects starting point and intersecting end point；The intersecting three-dimensional garment grid surface passed through between starting point and intersecting end point of phase meet ring is found, and is recorded as penetrating grid surface and is pierced grid surface；Carry out penetrating compensation to penetrating grid surface.The present invention solves the penetration problem that occurs in three-dimensional virtual garment dress, makes the clothes Grid Mobile that penetrates to correct position.

Description

A kind of three-dimensional virtual garment self-gating compensation method
Technical field
The present invention relates to a kind of method for being used to solve the problems, such as clothes self-gating in three-dimensional virtual garment dress.
Background technology
Three-dimensional virtual garment can cause clothes itself when human body is worn because of hypotelorism between clothes each several part Grid is penetrated.After being worn as shown in Figure 1a for source three-dimensional jacket, coat-sleeve is penetrated with clothing body, such as Fig. 1 b and Fig. 1 c institutes Show, wherein, Fig. 1 b are that coat-sleeve penetrates schematic diagram with clothing body after source three-dimensional jacket is worn, and Fig. 1 c are three-dimensional coat-sleeve Penetrate the schematic internal view of clothing body.
The content of the invention
It is an object of the invention to provide a kind of method for solving the problems, such as clothes self-gating in three-dimensional virtual garment dress.
In order to achieve the above object, the technical scheme is that there is provided a kind of three-dimensional virtual garment self-gating compensation side Method, it is characterised in that comprise the following steps：
Step 1, by source three-dimensional virtual garment mesh segmentation be different parts；
Step 2, by the three-dimensional virtual garment after dress from top to bottom use level face carry out ring cutting, after wear three-dimensional Virtual costume various pieces cut ring；
Step 3, the phase meet ring for finding three-dimensional virtual garment different piece, and record phase meet ring intersecting starting point and Intersecting end point；
Step 4, the three-dimensional garment grid surface passed through between the intersecting starting point and intersecting end point of phase meet ring is found, These produce the grid surface occured simultaneously and are divided into two parts, and a part is recorded as Ψ to penetrate grid surface, and another part is to be pierced net Lattice face, is recorded as Ψ '.
Step 5, to Ψ carry out penetrate compensation, comprise the following steps：
Step 5.1, pass through layer scan method, obtain same level tangent plane Ψ and Ψ ' cuts ring, and the triangle that ring passes through is cut using Ψ The vertex v of shapeiNormal vector N reverse N ', do ray to Ψ ', try to achieve intersection point vi′；
Step 5.2, with vertex viCentered on, decompose vertex viThe triangle at place, and mobile vertex viTo intersection point vi′；
Step 5.3, the geometric properties by three-dimensional virtual garment cut-parts in Laplce's mean value transformation holding compensation process, Vertex viThe transformation for mula on neighbours summit is：
In formula, N (vi) it is vertex viNeighbours' vertex set, vjIt is N (vi) in j-th of summit, j is vertex index, wijFor The weight on neighbours summit,
Step 5.4, repeat step 5.1 to step 5.3, until Ψ and Ψ ' cut ring intersect untill.
Preferably, after the step 2, and also include before the step 3：
Ring is cut described in obtaining step 2 to be ranked up.
Preferably, in the step 1, the source three-dimensional virtual garment grid is source three-dimensional jacket grid, by source The cutting of three-dimensional jacket grid is clothing body, left coat-sleeve, right coat-sleeve, then the sequence for cutting ring follows following principle：
Principle one, the compensation that penetrates for left coat-sleeve and clothing body, left coat-sleeve cut ring starting position for X positive direction maximums, It is at X negative directions minimum that clothing body, which cuts ring starting position,；
Principle two, the compensation that penetrates for right coat-sleeve and clothing body, right coat-sleeve cut ring starting position for X negative directions minimum at, Clothing body cuts ring starting position for X positive direction maximums.
The present invention solves the penetration problem occurred in three-dimensional virtual garment dress, makes the clothes Grid Mobile penetrated To correct position.
Brief description of the drawings
Fig. 1 a are source three-dimensional jacket；
Fig. 1 b are that coat-sleeve penetrates schematic diagram with clothing body after source three-dimensional jacket is worn；
Fig. 1 c are the schematic internal view that three-dimensional coat-sleeve penetrates clothing body；
Fig. 1 d are that the schematic internal view after self-gating compensation is carried out to three-dimensional coat-sleeve and clothing body using the present invention；
Fig. 2 is that source three-dimensional jacket is divided into three partial schematic diagrams；
Fig. 3 a and Fig. 3 b are the three-dimensional jacket ring cutting after dress, wherein, Fig. 3 a cut ring to be intensive, and Fig. 3 b are sparse phase Meet ring；
Fig. 4 a and Fig. 4 b cut ring sequence for three-dimensional jacket each several part, wherein, Fig. 4 a are that clothing body cuts ring and left coat-sleeve The sequence of ring is cut, Fig. 4 b are that clothing body cuts ring and right coat-sleeve cuts the sequence of ring；
To tie up, virtual jacket different parts are sparse to cut ring joining to Fig. 5；
Fig. 6 is that three-dimensional jacket different parts penetrate grid；
Fig. 7 is to penetrate the intersecting three-dimensional jacket of nothing after compensation to cut ring.
Embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate the present invention Rather than limitation the scope of the present invention.In addition, it is to be understood that after the content of the invention lectured has been read, people in the art Member can make various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims and limited Scope.
For the penetrativity shown in Fig. 1 b and Fig. 1 c, self-gating is carried out to three-dimensional coat-sleeve and clothing body using the present invention After compensation, obtained result as shown in Figure 1 d, specifically includes following steps：
Step 1, source three-dimensional jacket is divided into left coat-sleeve as shown in Figure 2, right coat-sleeve, the part of clothing body three.
Step 2, by the three-dimensional jacket after dress from top to bottom use level face carry out ring cutting, after wear three-dimensional Ring is cut in the left coat-sleeve of virtual jacket, right coat-sleeve, the part of clothing body three.As shown in Figure 3 a, if three-dimensional jacket different piece Penetrate, the cut ring of different piece can intersect, as shown in Figure 3 b.
Step 3, it is ranked up to cutting ring, sequence follows following principle：
Principle one, the compensation that penetrates for left coat-sleeve and clothing body, left coat-sleeve cut ring starting position for X positive direction maximums, It is at X negative directions minimum, as shown in fig. 4 a that clothing body, which cuts ring starting position,.
Principle two, the compensation that penetrates for right coat-sleeve and clothing body, right coat-sleeve cut ring starting position for X negative directions minimum at, Clothing body cuts ring starting position for X positive direction maximums, as shown in Figure 4 b.
Step 4, the phase meet ring for finding three-dimensional virtual garment different piece, and record phase meet ring intersecting starting point and Intersecting end point, as shown in Figure 5.
Step 5, the three-dimensional garment grid surface passed through between the intersecting starting point and intersecting end point of phase meet ring is found, These produce the grid surface occured simultaneously and are divided into two parts, and a part is recorded as Ψ to penetrate grid surface, and another part is to be pierced net Lattice face, is recorded as Ψ '.As shown in Figure 6.
Step 6, to Ψ carry out penetrate compensation, be divided into following steps：
Step 6.1, pass through layer scan method, obtain same level tangent plane Ψ and Ψ ' cuts ring, and the triangle that ring passes through is cut using Ψ The vertex v of shapeiNormal vector N reverse N ', do ray to Ψ ', try to achieve intersection point vi′；
Step 6.2, with vertex viCentered on, decompose vertex viThe triangle at place, and mobile vertex viTo intersection point vi′；
Step 6.3, the geometric properties by three-dimensional virtual garment cut-parts in Laplce's mean value transformation holding compensation process, Vertex viThe transformation for mula on neighbours summit is：
In formula, N (vi) it is vertex viNeighbours' vertex set, vjIt is N (vi) in j-th of summit, j is vertex index, wijFor The weight on neighbours summit,
Step 6.4, repeat step 6.1 to step 6.3, until Ψ and Ψ ' cut ring intersect untill., such as Fig. 7 institutes Show.

Claims (2)

1. a kind of three-dimensional virtual garment self-gating compensation method, it is characterised in that comprise the following steps：
Step 1, by source three-dimensional virtual garment mesh segmentation be different parts；
Step 2, by the three-dimensional virtual garment after dress from top to bottom use level face carry out ring cutting, three-dimensional after being worn Clothes various pieces cut ring；
Step 3, the phase meet ring for finding three-dimensional virtual garment different piece, and record the intersecting starting point of phase meet ring and intersect End point；
Step 4, the three-dimensional garment grid surface passed through between the intersecting starting point and intersecting end point of phase meet ring is found, these Produce the grid surface occured simultaneously and be divided into two parts, a part is recorded as ψ to penetrate grid surface, and another part is to be pierced grid surface, It is recorded as ψ '.
Step 5, to ψ carry out penetrate compensation, comprise the following steps：
Step 5.1, pass through layer scan method, obtain same level tangent plane ψ and ψ ' cuts ring, and the top for the triangle that ring passes through is cut using ψ Point viNormal vector N reverse N ', do ray to ψ ', try to achieve intersection point vi′；
Step 5.2, with vertex viCentered on, decompose vertex viThe triangle at place, and mobile vertex viTo intersection point vi′；
Step 5.3, the geometric properties by three-dimensional virtual garment cut-parts in Laplce's mean value transformation holding compensation process, summit viThe transformation for mula on neighbours summit is：
<mrow> <mi>L</mi> <mrow> <mo>(</mo> <msub> <mi>v</mi> <mi>i</mi> </msub> <mo>)</mo> </mrow> <mo>=</mo> <msub> <mi>&amp;Sigma;</mi> <mrow> <msub> <mi>v</mi> <mi>j</mi> </msub> <mo>&amp;Element;</mo> <mi>N</mi> <mrow> <mo>(</mo> <msub> <mi>v</mi> <mi>i</mi> </msub> <mo>)</mo> </mrow> </mrow> </msub> <msub> <mi>w</mi> <mrow> <mi>i</mi> <mi>j</mi> </mrow> </msub> <mrow> <mo>(</mo> <msub> <mi>v</mi> <mi>i</mi> </msub> <mo>-</mo> <msub> <mi>v</mi> <mi>j</mi> </msub> <mo>)</mo> </mrow> </mrow>
In formula, N (vi) it is vertex viNeighbours' vertex set, vjIt is N (vi) in j-th of summit, j is vertex index, wijFor neighbours The weight on summit,
Step 5.4, repeat step 5.1 to step 5.3, until ψ and ψ ' cut ring intersect untill.
A kind of three-dimensional virtual garment self-gating compensation method as claimed in claim 1, it is characterised in that the step 2 it Afterwards, and before the step 3 also include：
Ring is cut described in obtaining step 2 to be ranked up.
2. a kind of three-dimensional virtual garment self-gating compensation method as claimed in claim 2, it is characterised in that in the step 1 In, the source three-dimensional virtual garment grid is source three-dimensional jacket grid, be clothing body by source three-dimensional jacket grid cutting, Left coat-sleeve, right coat-sleeve, the then sequence for cutting ring follow following principle：
Principle one, the compensation that penetrates for left coat-sleeve and clothing body, left coat-sleeve cut ring starting position for X positive direction maximums, clothing body It is at X negative directions minimum to cut ring starting position；
Principle two, the compensation that penetrates for right coat-sleeve and clothing body, right coat-sleeve cut ring starting position for X negative directions minimum at, clothing body Ring starting position is cut for X positive direction maximums.
CN201710398383.6A 2017-05-31 2017-05-31 Three-dimensional virtual garment self-penetration compensation method Expired - Fee Related CN107292964B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101650839A (en) * 2009-08-11 2010-02-17 东华大学 Fitting performance evaluation method of three dimensional garment in network environment
CN103325146A (en) * 2013-06-28 2013-09-25 北京航空航天大学 Clothes surface piece three-dimensional mapping method based on human body section ring data
CN103366401A (en) * 2013-08-05 2013-10-23 上海趣搭网络科技有限公司 Quick display method for multi-level virtual clothes fitting
CN106372344A (en) * 2016-09-05 2017-02-01 中山大学 Three-dimensional clothes transformation method based on feature size constrain and system thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101650839A (en) * 2009-08-11 2010-02-17 东华大学 Fitting performance evaluation method of three dimensional garment in network environment
CN103325146A (en) * 2013-06-28 2013-09-25 北京航空航天大学 Clothes surface piece three-dimensional mapping method based on human body section ring data
CN103366401A (en) * 2013-08-05 2013-10-23 上海趣搭网络科技有限公司 Quick display method for multi-level virtual clothes fitting
CN106372344A (en) * 2016-09-05 2017-02-01 中山大学 Three-dimensional clothes transformation method based on feature size constrain and system thereof

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
EMMANUEL TRUQUIN 等: "Sketching garments for virtual characters", 《EUROGRAPHICS WORKSHOP ON SKETCH-BASED INTERFACES AND MODELING》 *
MARIO BOTSCH 等: "On Linear Variational Surface Deformation Methods", 《IEEE TRANSACTIONS ON VISUALIZATION AND COMPUTER GRAPHICS》 *
PHILIPPE DECAUDIN 等: "Virtual Garments：A Fully Geometric Approach for Clothing Design", 《EUROGRAPHICS 2006》 *

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