CN105488360B - A kind of suffix is the anti-fake processing method and device of the threedimensional model file of fbx forms - Google Patents
A kind of suffix is the anti-fake processing method and device of the threedimensional model file of fbx forms Download PDFInfo
- Publication number
- CN105488360B CN105488360B CN201510849723.3A CN201510849723A CN105488360B CN 105488360 B CN105488360 B CN 105488360B CN 201510849723 A CN201510849723 A CN 201510849723A CN 105488360 B CN105488360 B CN 105488360B
- Authority
- CN
- China
- Prior art keywords
- fbx
- suffix
- threedimensional model
- polygonal patch
- file
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000003672 processing method Methods 0.000 title claims abstract description 8
- 238000012545 processing Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 11
- 230000000644 propagated effect Effects 0.000 claims abstract description 7
- 238000013480 data collection Methods 0.000 claims description 6
- 230000001902 propagating effect Effects 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
Landscapes
- Engineering & Computer Science (AREA)
- Software Systems (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
- Technology Law (AREA)
- Computer Hardware Design (AREA)
- Computer Security & Cryptography (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Storage Device Security (AREA)
- Processing Or Creating Images (AREA)
Abstract
It is the anti-fake processing method and device of the threedimensional model file of fbx forms the invention discloses a kind of suffix, method comprises the following steps：Include according to the fbx forms establishment cloud data integrate and the suffix of polygonal patch data set as the threedimensional model file of fbx after, establish to exchange the polygonal patch vertex position exchange table of each polygonal patch Data Position in the polygonal patch data set；When carrying out anti-fake processing to the threedimensional model file that the suffix is fbx, the ciphering sequence password generated using copyright holder's public key determines polygonal patch apex coordinate to be exchanged in polygonal patch data set；The polygonal patch apex coordinate to be exchanged is exchanged using the polygonal patch vertex position exchange table, so as to which the threedimensional model that the suffix for generating the dislocation of its polygonal patch data set vertex position relation is fbx protects file；The threedimensional model that the suffix is fbx, which is propagated, by network or other physics modes protects file.
Description
Technical field
The present invention relates to threedimensional model technical field, more particularly to a kind of suffix is the threedimensional model file of fbx forms
Anti-fake processing method and device.
Background technology
Threedimensional model refers to the object or person in a computer, presented in three dimensions, such as three-dimensional film, three-dimensional game
Play, three-dimensional animation, the scene in virtual reality three-dimensional applications, character are another after word, image, audio, video
Kind information carrying form.
The establishment or use of all threedimensional model files, mainly take two methods at present：Utilize the side of computer programming
Formula, such as based on OpenGL dynamic bases writes program and model is carried out newly-built or the uses such as read, change；It is answered using existing
With software, with manual artificial three-dimensional modeling, for example manually modeled with 3D Max or Maya software or model used,
For example use threedimensional model with game engines such as Untity.
Develop at present in academia, industrial circle in the copyright management of the information carriers such as word, image, audio, video
It is very ripe, digital watermark technology, the application of digital certificate are increasingly mature.With the development that new media is applied, academic circles at present
There is part of theory research to the copyright management of threedimensional model, but be concentrated mainly on digital watermark technology level, due to
The complexity of threedimensional model, when whose win application of number is with threedimensional model, watermark inevitably receives model rotation, scaling, position
The no physical attacks such as shifting, material change, light conversion, the robustness of watermark cannot ensure, so the original of threedimensional model
Invasive or copyright management also only resides within scientific paper conceptual phase.
The content of the invention
It is the anti-fake processing method and dress of the threedimensional model file of fbx forms it is an object of the invention to provide a kind of suffix
It puts, solves the problems, such as that the originality of fbx threedimensional models in the prior art or copyright management can not be protected.
According to an aspect of the invention, there is provided a kind of anti-fake processing of suffix for the threedimensional model file of fbx forms
Method comprises the following steps：
Including that cloud data integrates and the suffix of polygonal patch data set is the three of fbx according to fbx forms establishment
After dimension module file, establish to exchange the more of each polygonal patch Data Position in the polygonal patch data set
Side shape dough sheet vertex position exchanges table；
When carrying out anti-fake processing to the threedimensional model file that the suffix is fbx, generated using copyright holder's public key
Ciphering sequence password determine polygonal patch apex coordinate to be exchanged in polygonal patch data set；
The polygonal patch apex coordinate to be exchanged is carried out using the polygonal patch vertex position exchange table
It exchanges, so as to which the threedimensional model that the suffix for generating the dislocation of its polygonal patch data set vertex position relation is fbx protects file；
The threedimensional model that the suffix is fbx, which is propagated, by network or other physics modes protects file.
Preferably, the polygonal patch Data Position, which exchanges table, includes the ID of each polygon facet sheet data, original top
It puts position coordinates and is exchanged vertex position coordinate.
Preferably, the ciphering sequence password is binary sequence, and each of which data bit corresponds to polygon facet sheet data
The polygon facet sheet data concentrated.
Preferably, it is described using the polygonal patch vertex position exchange table to the polygonal patch to be exchanged
Apex coordinate, which exchange, to be included：
According to the value of each data bit in the ciphering sequence password, judge corresponding polygon in polygonal patch data set
Whether shape dough sheet data need to carry out apex coordinate exchange；
If judging, corresponding polygon facet sheet data needs to carry out apex coordinate exchange, by searching for polygonal patch
Vertex position exchanges table, and determine the polygon facet sheet data is exchanged vertex position coordinate；
The polygon facet sheet data for needing to carry out apex coordinate exchange is transposed to from its original vertices position coordinates
It is exchanged vertex position coordinate.
Preferably, further include：
After the threedimensional model that the suffix is fbx is propagated via network or other physics modes and protects file, using with
The corresponding decrypted sequences password of ciphering sequence password and the polygonal patch vertex position exchange table, are by the suffix
The threedimensional model protection file of fbx is reduced to the threedimensional model file that the suffix is fbx.
Preferably, utilization decrypted sequences password corresponding with the ciphering sequence password and the polygonal patch
Vertex position exchanges table, and the threedimensional model protection file that the suffix is fbx is reduced to the threedimensional model that the suffix is fbx
File includes：
According to the value of each data bit in the decrypted sequences password, judge corresponding polygon in polygonal patch data set
Whether shape dough sheet data need to carry out apex coordinate reduction；
If judging, corresponding polygon facet sheet data needs to carry out apex coordinate reduction, by searching for polygonal patch
Vertex position exchanges table, determines the original vertices position coordinates of the polygon facet sheet data；
By the way that polygon facet sheet data for needing to carry out apex coordinate reduction is exchanged vertex position coordinate from it
Original vertices position coordinates determined by reverting to, so that the suffix protects file to be reduced to institute for the threedimensional model of fbx
State the threedimensional model file that suffix is fbx.
According to another aspect of the present invention, a kind of anti-fake processing for the threedimensional model file that suffix is fbx forms is provided
Device, including：
Module is established, for including cloud data collection and polygonal patch data set according to fbx forms establishment
After suffix is the threedimensional model file of fbx, establish to exchange each polygon facet in the polygonal patch data set
The polygonal patch vertex position of sheet data position exchanges table；
Determining module, for when carrying out anti-fake processing to the threedimensional model file that the suffix is fbx, utilizing copyright institute
The ciphering sequence password of someone's public key generation determines polygonal patch apex coordinate to be exchanged in polygonal patch data set；
Apex coordinate Transpose module, for using the polygonal patch vertex position exchange table to described to be exchanged more
Side shape dough sheet apex coordinate is exchanged, so as to which the suffix for generating the dislocation of its polygonal patch data set vertex position relation is
The threedimensional model protection file of fbx；
Propagation module is propagated the threedimensional model that the suffix is fbx and is protected for passing through network or other physics modes
File.
Preferably, the polygonal patch Data Position, which exchanges table, includes the ID of each polygon facet sheet data, original top
It puts position coordinates and is exchanged vertex position coordinate.
Preferably, the ciphering sequence password is binary sequence, and each of which data bit corresponds to polygon facet sheet data
The polygon facet sheet data concentrated.
Preferably, further include：
Reduction unit, for propagating the threedimensional model protection that the suffix is fbx via network or other physics modes
After file, exchanged using decrypted sequences password corresponding with the ciphering sequence password and the polygonal patch vertex position
The threedimensional model protection file that the suffix is fbx is reduced to the threedimensional model file that the suffix is fbx by table.
Compared with prior art, the beneficial effects of the present invention are：
The present invention is exchanged by the apex coordinate of the polygon facet sheet data to fbx threedimensional models, and it is polygon to generate its
The threedimensional model that the suffix of shape dough sheet data set vertex position relation dislocation is fbx protects file so that the original of fbx threedimensional models
Invasive or copyright management is protected.
Description of the drawings
Fig. 1 is the anti-fake processing method for the threedimensional model file that a kind of suffix provided in an embodiment of the present invention is fbx forms
Flow chart；
Fig. 2 is the anti-fake processing unit for the threedimensional model file that a kind of suffix provided in an embodiment of the present invention is fbx forms
Structure chart；
Fig. 3 is the threedimensional model schematic diagram for the threedimensional model file that suffix provided in an embodiment of the present invention is fbx forms；
Fig. 4 is the schematic diagram of ciphering sequence password provided in an embodiment of the present invention；
Fig. 5 is the schematic diagram that propagation suffix provided in an embodiment of the present invention protects file for the threedimensional model of fbx forms.
Specific embodiment
Below in conjunction with attached drawing to a preferred embodiment of the present invention will be described in detail, it should be understood that described below is excellent
Embodiment is selected to be merely to illustrate and explain the present invention, is not intended to limit the present invention.
Fig. 1 is the anti-fake processing method for the threedimensional model file that a kind of suffix provided in an embodiment of the present invention is fbx forms
Flow chart, as shown in Figure 1, comprising the following steps：
Step S101：Including the suffix of cloud data collection and polygonal patch data set according to fbx forms establishment
After the threedimensional model file of fbx, establish to exchange each polygon facet the piece number in the polygonal patch data set
Table is exchanged according to the polygonal patch vertex position of position；
Step S102：When carrying out anti-fake processing to the threedimensional model file that the suffix is fbx, copyright holder is utilized
The ciphering sequence password of public key generation determines polygonal patch apex coordinate to be exchanged in polygonal patch data set；
Step S103：Using the polygonal patch vertex position exchange table to the polygonal patch vertex to be exchanged
Coordinate is exchanged, the threedimensional model that the suffix to misplace so as to generate its polygonal patch data set vertex position relation is fbx
Protect file；
Step S104：The threedimensional model that the suffix is fbx, which is propagated, by network or other physics modes protects file.
Wherein, the polygonal patch Data Position, which exchanges table, includes the ID of each polygon facet sheet data, original vertices
Position coordinates and it is exchanged vertex position coordinate.The ciphering sequence password be binary sequence, each of which data bit pair
Answer a polygon facet sheet data in polygonal patch data set.
Specifically, it is described using the polygonal patch vertex position exchange table to the polygon facet to be exchanged
Piece apex coordinate, which exchange, to be included：According to the value of each data bit in the ciphering sequence password, polygon facet the piece number is judged
Whether need to carry out apex coordinate exchange according to the corresponding polygon facet sheet data of concentration；If judge corresponding polygon facet the piece number
According to progress apex coordinate exchange is needed, then table is exchanged by searching for polygonal patch vertex position, determine the polygon facet the piece number
According to be exchanged vertex position coordinate；By the polygon facet sheet data for needing to carry out apex coordinate exchange from its original vertices
Position coordinates, which is transposed to, is exchanged vertex position coordinate.
Present invention additionally comprises：It is protected propagating the threedimensional model that the suffix is fbx via network or other physics modes
After file, exchanged using decrypted sequences password corresponding with the ciphering sequence password and the polygonal patch vertex position
The threedimensional model protection file that the suffix is fbx is reduced to the threedimensional model file that the suffix is fbx by table.Wherein, institute
The utilization stated decrypted sequences password corresponding with the ciphering sequence password and the polygonal patch vertex position exchange table, will
The threedimensional model protection file that the suffix is fbx, which is reduced to the threedimensional model file that the suffix is fbx, to be included：According to described
The value of each data bit in decrypted sequences password judges whether corresponding polygon facet sheet data needs in polygonal patch data set
Carry out apex coordinate reduction；If judging, corresponding polygon facet sheet data needs to carry out apex coordinate reduction, by looking into
Polygonal patch vertex position exchange table is looked for, determines the original vertices position coordinates of the polygon facet sheet data；By by described in
Need carry out apex coordinate reduction polygon facet sheet data from its be exchanged vertex position coordinate revert to determined by it is original
Vertex position coordinate, so that the threedimensional model protection file that the suffix is fbx is reduced to the three-dimensional mould that the suffix is fbx
Type file.
Fig. 2 is the anti-fake processing unit for the threedimensional model file that a kind of suffix provided in an embodiment of the present invention is fbx forms
Structure chart, as shown in Fig. 2, including：Establish module 201, determining module 202, apex coordinate Transpose module 203 and propagating mode
Block 104.It is described to establish module 201, for including cloud data collection and polygon facet sheet data according to fbx forms establishment
After the suffix integrated is the threedimensional model file of fbx, establish to exchange each polygon in the polygonal patch data set
The polygonal patch vertex position of shape dough sheet Data Position exchanges table；The determining module 202, for being to the suffix
When the threedimensional model file of fbx carries out anti-fake processing, determined using the ciphering sequence password of copyright holder's public key generation polygon
Polygonal patch apex coordinate to be exchanged in shape dough sheet data set；The apex coordinate Transpose module 203, for described in utilization
Polygonal patch vertex position exchange table exchanges the polygonal patch apex coordinate to be exchanged, more so as to generate it
The threedimensional model that the suffix of side shape dough sheet data set vertex position relation dislocation is fbx protects file；The propagation module 204,
File is protected for propagating the threedimensional model that the suffix is fbx by network or other physics modes.
Wherein, the polygonal patch Data Position, which exchanges table, includes the ID of each polygon facet sheet data, original vertices
Position coordinates and it is exchanged vertex position coordinate.The ciphering sequence password be binary sequence, each of which data bit pair
Answer a polygon facet sheet data in polygonal patch data set.
Present invention additionally comprises：Reduction unit, for being fbx's propagating the suffix via network or other physics modes
After threedimensional model protection file, decrypted sequences password corresponding with the ciphering sequence password and the polygonal patch top are utilized
Table is exchanged in point position, and the threedimensional model protection file that the suffix is fbx is reduced to the threedimensional model text that the suffix is fbx
Part.It includes：Judgment sub-unit for the value according to each data bit in the decrypted sequences password, judges polygonal patch
Whether corresponding polygon facet sheet data needs to carry out apex coordinate reduction in data set；Subelement is searched, judges institute for working as
Corresponding polygon facet sheet data needs to carry out apex coordinate reduction, then exchanges table by searching for polygonal patch vertex position,
Determine the original vertices position coordinates of the polygon facet sheet data；Apex coordinate also atomic unit, for by by the needs
The polygon facet sheet data of progress apex coordinate reduction is exchanged vertex position coordinate from it and reverts to identified original vertices
Position coordinates, so that the threedimensional model protection file that the suffix is fbx is reduced to the threedimensional model text that the suffix is fbx
Part.Wherein, decrypted sequences password is binary sequence, and correspond in polygonal patch data set one of each of which data bit is polygon
Shape dough sheet data.
3 the technology contents of the present invention are described in detail for embodiment to attached drawing 5 below in conjunction with the accompanying drawings：
As shown in figure 3, first, in the three-dimensional mould for the threedimensional model file that the suffix created according to the fbx forms is fbx
Type, including cloud data collection and polygonal patch data set, wherein, the polygon facet sheet data that the three-dimensional surface sheet data is concentrated
ID be respectively 1,2,3,4,5.And it establishes to exchange in the polygonal patch data set for the three-dimensional surface sheet data collection
Each polygonal patch Data Position polygonal patch vertex position exchange table, as shown in table 1, the polygonal patch top
It puts ID of the exchange table in position including each polygon facet sheet data, original vertices position coordinates and is exchanged vertex position seat
Mark.
Table 1：Polygonal patch vertex position exchanges table
| The ID of polygon facet sheet data | Original vertices position coordinates | It is exchanged vertex position coordinate |
| 1 | 1 | 3 |
| 2 | 2 | 5 |
| 3 | 3 | 1 |
| 4 | 4 | 2 |
| 5 | 5 | 4 |
Then, when carrying out anti-fake processing to the threedimensional model file that the suffix is fbx, copyright holder's public key is utilized
The ciphering sequence password of generation determines polygonal patch apex coordinate to be exchanged in polygonal patch data set.It is wherein described
Ciphering sequence password is binary sequence, and each of which data bit corresponds to a polygon facet the piece number in polygonal patch data set
According to.As shown in figure 4, ciphering sequence password corresponds for the ID of 10100 and polygon facet sheet data.The copyright holder is public
There are many ciphering sequence passwords of key generation, and method obtains, and can be obtained according to user configuration demand, also can be according to digital certificate
Hash values carry out Binary Conversion acquisition, also can be by being obtained in the binary data base that prestores etc..
Then, using the polygonal patch vertex position exchange table to the polygonal patch apex coordinate to be exchanged
It is exchanged, so as to which the threedimensional model that the suffix for generating the dislocation of its polygonal patch data set vertex position relation is fbx is protected
File.According to the value of each data bit in the ciphering sequence password, corresponding polygon in polygonal patch data set is judged
Whether dough sheet data need to carry out apex coordinate exchange, wherein, the value of data bit is 1 in the ciphering sequence password, then judges
Corresponding polygon facet sheet data needs to carry out apex coordinate exchange in polygonal patch data set；In the ciphering sequence password
The value of data bit is 0, then judges that corresponding polygon facet sheet data need not carry out apex coordinate in polygonal patch data set
It exchanges.At this point, ciphering sequence password be 10100, i.e. polygon facet sheet data ID for 1 and 3 polygon facet sheet data need into
Row apex coordinate is exchanged, and the polygon facet sheet data that polygon facet sheet data ID is 2,4 and 5 need not carry out apex coordinate tune
It changes, then it is 1 and 3 to be exchanged top to search polygon facet sheet data ID respectively from the polygonal patch vertex position exchange table
Point position coordinates is 3 and 1, and the vertex position coordinate of other polygon facet sheet datas remains unchanged.
Alternatively, the value of data bit is 0 in the ciphering sequence password, then judge corresponding more in polygonal patch data set
Side shape dough sheet data need to carry out apex coordinate exchange；The value of data bit is 1 in the ciphering sequence password, then judges polygon
Corresponding polygon facet sheet data need not carry out apex coordinate exchange in dough sheet data set.At this point, ciphering sequence password is
The polygon facet sheet data that 10100, i.e. polygon facet sheet data ID are 2,4 and 5 needs to carry out apex coordinate exchange, polygon facet
The polygon facet sheet data that sheet data ID is 1 and 3 need not carry out apex coordinate exchange, then from polygonal patch vertex position
It is 5,2 and 4 to put and search the vertex position coordinate that is exchanged that polygon facet sheet data ID is 2,4 and 5 in exchange table respectively, other are more
The vertex position coordinate of side shape dough sheet data remains unchanged.
Finally, propagate the threedimensional model that the suffix is fbx by network or other physics modes and protect file, such as scheme
Shown in 5, send terminal and for the threedimensional model of fbx forms file is protected to send the suffix by network or other physics modes
Give receive terminal, receive terminal receive the suffix be fbx forms threedimensional model protect file after, using with the encryption
The corresponding decrypted sequences password of stream cipher and the polygonal patch vertex position exchange table, are the three of fbx by the suffix
Dimension module protection file be reduced to the suffix be fbx threedimensional model file its specifically include：It receives terminal and utilizes the solution
Close stream cipher 10100 determines that the polygon facet sheet data that polygon facet sheet data ID is 1 and 3 has carried out apex coordinate reduction,
The polygon facet sheet data that polygon facet sheet data ID is 2,4 and 5 is reduced without apex coordinate, then passes through the polygon facet
It is 1 and 3 to search the original vertices position coordinates that polygon facet sheet data ID is 1 and 3 in piece vertex position exchange table respectively, other
The vertex position coordinate of polygon facet sheet data remains unchanged, so that the threedimensional model that the suffix is fbx protects file also
Originally it was the threedimensional model file that the suffix is fbx.
Wherein, for exchanging the polygon facet of each polygonal patch Data Position in the polygonal patch data set
Table is exchanged in sheet data position, and as shown in table 2 and table 3, the polygonal patch vertex position, which exchanges table, includes each polygon facet
The ID of sheet data, original vertices position coordinates and it is exchanged vertex position coordinate.The original vertices position of polygon facet sheet data
Put coordinate and be exchanged vertex position coordinate can be random, as shown in table 2, can also incorrect bits be waited to exchange, as shown in table 3, etc..Table
2 and table 3 in N for positive integer, N>6.
Table 2：Polygonal patch vertex position exchanges table
| The ID of polygon facet sheet data | Original vertices position coordinates | It is exchanged vertex position coordinate |
| 1 | 1 | 3 |
| 2 | 2 | 5 |
| 3 | 3 | 1 |
| …… | …… | |
| N-1 | N-1 | N-5 |
| N | N | N-3 |
Table 3：Polygonal patch vertex position exchanges table
| The ID of polygon facet sheet data | Original vertices position coordinates | It is exchanged vertex position coordinate |
| 1 | 1 | 2 |
| 2 | 2 | 3 |
| 3 | 3 | 4 |
| …… | …… | …… |
| N-1 | N-1 | N |
| N | N | 1 |
In conclusion the present invention has following technique effect：
The present invention is exchanged by the apex coordinate of the polygon facet sheet data to fbx threedimensional models, and it is polygon to generate its
The threedimensional model that the suffix of shape dough sheet data set vertex position relation dislocation is fbx protects file, and suffix is used in other users
When protecting file for the threedimensional model of fbx, it is necessary to carry out reduction treatment to it, obtain the threedimensional model file that suffix is fbx, make
The originality or copyright management for obtaining fbx threedimensional models are protected.
Although the present invention is described in detail above, but the invention is not restricted to this, those skilled in the art of the present technique
It can be carry out various modifications with principle according to the present invention.Therefore, all modifications made according to the principle of the invention, all should be understood to
Fall into protection scope of the present invention.
Claims (10)
1. a kind of suffix is the anti-fake processing method of the threedimensional model file of fbx forms, which is characterized in that is comprised the following steps：
According to the fbx forms establishment include cloud data integrate and the suffix of polygonal patch data set as fbx three-dimensional mould
After type file, establish to exchange the polygon of each polygonal patch Data Position in the polygonal patch data set
Dough sheet vertex position exchanges table；
When carrying out anti-fake processing to the threedimensional model file that the suffix is fbx, adding for copyright holder's public key generation is utilized
Close stream cipher determines polygonal patch apex coordinate to be exchanged in polygonal patch data set；
The polygonal patch apex coordinate to be exchanged is exchanged using the polygonal patch vertex position exchange table,
So as to which the threedimensional model that the suffix for generating the dislocation of its polygonal patch data set vertex position relation is fbx protects file；
The threedimensional model that the suffix is fbx, which is propagated, by network or other physics modes protects file.
2. according to the method described in claim 1, it is characterized in that, the polygonal patch Data Position exchanges table including each
The ID of polygon facet sheet data, original vertices position coordinates and it is exchanged vertex position coordinate.
3. according to the method described in claim 2, it is characterized in that, the ciphering sequence password is binary sequence, often
A data bit corresponds to a polygon facet sheet data in polygonal patch data set.
4. according to the method described in claim 3, it is characterized in that, the utilization polygonal patch vertex position is exchanged
Table, which to the polygonal patch apex coordinate to be exchanged exchange, to be included：
According to the value of each data bit in the ciphering sequence password, corresponding polygon facet in polygonal patch data set is judged
Whether sheet data needs to carry out apex coordinate exchange；
If judging, corresponding polygon facet sheet data needs to carry out apex coordinate exchange, by searching for polygonal patch vertex
Table is exchanged in position, and determine the polygon facet sheet data is exchanged vertex position coordinate；
The polygon facet sheet data for needing to carry out apex coordinate exchange is transposed to from its original vertices position coordinates and is adjusted
Change vertex position coordinate.
5. according to any methods of claim 1-4, which is characterized in that further include：
After the threedimensional model that the suffix is fbx is propagated via network or other physics modes and protects file, using with it is described
The corresponding decrypted sequences password of ciphering sequence password and the polygonal patch vertex position exchange table, are fbx by the suffix
Threedimensional model protection file be reduced to the suffix be fbx threedimensional model file.
6. according to the method described in claim 5, it is characterized in that, utilization solution corresponding with the ciphering sequence password
Close stream cipher and the polygonal patch vertex position exchange table, and the threedimensional model that the suffix is fbx is protected file also
Originally it was that the threedimensional model file that the suffix is fbx includes：
According to the value of each data bit in the decrypted sequences password, corresponding polygon facet in polygonal patch data set is judged
Whether sheet data needs to carry out apex coordinate reduction；
If judging, corresponding polygon facet sheet data needs to carry out apex coordinate reduction, by searching for polygonal patch vertex
Table is exchanged in position, determines the original vertices position coordinates of the polygon facet sheet data；
By by described the polygon facet sheet data for carrying out apex coordinate reduction being needed to be exchanged the reduction of vertex position coordinate from it
To identified original vertices position coordinates so that the threedimensional model that the suffix is fbx protect file be reduced to it is described after
Sew the threedimensional model file for fbx.
7. a kind of suffix is the anti-fake processing unit of the threedimensional model file of fbx forms, which is characterized in that including：
Module is established, for including the suffix of cloud data collection and polygonal patch data set according to fbx forms establishment
After the threedimensional model file of fbx, establish to exchange each polygon facet the piece number in the polygonal patch data set
Table is exchanged according to the polygonal patch vertex position of position；
Determining module, for when carrying out anti-fake processing to the threedimensional model file that the suffix is fbx, utilizing copyright holder
The ciphering sequence password of public key generation determines polygonal patch apex coordinate to be exchanged in polygonal patch data set；
Apex coordinate Transpose module, for using the polygonal patch vertex position exchange table to the polygon to be exchanged
Dough sheet apex coordinate is exchanged, so as to which the suffix for generating the dislocation of its polygonal patch data set vertex position relation is fbx's
Threedimensional model protects file；
Propagation module propagates the threedimensional model that the suffix is fbx and protects file for passing through network or other physics modes.
8. suffix according to claim 7 is the anti-fake processing unit of the threedimensional model file of fbx forms, feature exists
In, the polygonal patch Data Position exchange table include the ID of each polygon facet sheet data, original vertices position coordinates with
And it is exchanged vertex position coordinate.
9. suffix according to claim 8 is the anti-fake processing unit of the threedimensional model file of fbx forms, feature exists
In, the ciphering sequence password be binary sequence, each of which data bit correspond in polygonal patch data set more than one
Side shape dough sheet data.
10. it is the anti-fake processing unit of the threedimensional model file of fbx forms according to any suffix of claim 7-9,
It is characterized in that, further includes：
Reduction unit, for propagating the threedimensional model protection file that the suffix is fbx via network or other physics modes
Afterwards, table is exchanged using decrypted sequences password corresponding with the ciphering sequence password and the polygonal patch vertex position, it will
The threedimensional model protection file that the suffix is fbx is reduced to the threedimensional model file that the suffix is fbx.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510849723.3A CN105488360B (en) | 2015-11-27 | 2015-11-27 | A kind of suffix is the anti-fake processing method and device of the threedimensional model file of fbx forms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510849723.3A CN105488360B (en) | 2015-11-27 | 2015-11-27 | A kind of suffix is the anti-fake processing method and device of the threedimensional model file of fbx forms |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105488360A CN105488360A (en) | 2016-04-13 |
| CN105488360B true CN105488360B (en) | 2018-06-01 |
Family
ID=55675335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510849723.3A Expired - Fee Related CN105488360B (en) | 2015-11-27 | 2015-11-27 | A kind of suffix is the anti-fake processing method and device of the threedimensional model file of fbx forms |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105488360B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110138555B (en) * | 2019-05-21 | 2020-11-20 | 长沙能川信息科技有限公司 | Encryption and decryption method for FBX format three-dimensional model |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101447070A (en) * | 2008-12-04 | 2009-06-03 | 上海大学 | Digital watermarking protection method of two-dimensional vector graph based on canonical correlation analysis |
| CN102314667A (en) * | 2011-08-31 | 2012-01-11 | 辽宁大学 | Vertex weight value-based OBJ (object)-format three-dimensional model digital-watermarking method |
| CN102339456A (en) * | 2010-07-22 | 2012-02-01 | 山东大学 | Reversible watermarking apparatus of three-dimensional model and method thereof for realizing robustness on similar transformation |
| CN102622721A (en) * | 2012-03-06 | 2012-08-01 | 福建师范大学 | Three-dimensional grid model blind-watermarking method based on depth image mapping |
| CN103377455A (en) * | 2012-04-19 | 2013-10-30 | 常熟南师大发展研究院有限公司 | Three-dimensional geographic model digital watermarking method with copyright protection service orientation |
| CN103942748A (en) * | 2014-05-13 | 2014-07-23 | 英华达（上海）科技有限公司 | Protection method and system for three-dimensional model file |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100955201B1 (en) * | 2008-02-25 | 2010-04-29 | 주식회사 마크애니 | Method and apparatus for watermarking of 3d mesh model |
-
2015
- 2015-11-27 CN CN201510849723.3A patent/CN105488360B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101447070A (en) * | 2008-12-04 | 2009-06-03 | 上海大学 | Digital watermarking protection method of two-dimensional vector graph based on canonical correlation analysis |
| CN102339456A (en) * | 2010-07-22 | 2012-02-01 | 山东大学 | Reversible watermarking apparatus of three-dimensional model and method thereof for realizing robustness on similar transformation |
| CN102314667A (en) * | 2011-08-31 | 2012-01-11 | 辽宁大学 | Vertex weight value-based OBJ (object)-format three-dimensional model digital-watermarking method |
| CN102622721A (en) * | 2012-03-06 | 2012-08-01 | 福建师范大学 | Three-dimensional grid model blind-watermarking method based on depth image mapping |
| CN103377455A (en) * | 2012-04-19 | 2013-10-30 | 常熟南师大发展研究院有限公司 | Three-dimensional geographic model digital watermarking method with copyright protection service orientation |
| CN103942748A (en) * | 2014-05-13 | 2014-07-23 | 英华达（上海）科技有限公司 | Protection method and system for three-dimensional model file |
Non-Patent Citations (3)
| Title |
|---|
| 三维点云数据数字水印算法研究;羌鑫林;《中国优秀硕士学位论文全文数据库》;20140215(第2期);全文 * |
| 图像与图形数字水印技术研究;王勋;《中国博士学位论文全文数据库》;20070215(第2期);全文 * |
| 基于几何特征的三维模型数字水印算法研究;朱利利;《中国优秀硕士学位论文全文数据库》;20150115(第一期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105488360A (en) | 2016-04-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Koller et al. | Research challenges for digital archives of 3D cultural heritage models | |
| Xu et al. | Hidden message in a deformation-based texture | |
| Nishida et al. | Example‐driven procedural urban roads | |
| JP3256180B2 (en) | Method for encrypting and decrypting three-dimensional shape data | |
| Peng et al. | Blind watermarking scheme for polylines in vector geo-spatial data | |
| JPH10334272A (en) | Information embedding method and system for three-dimensional shape model | |
| Cao et al. | Nonlinear scrambling-based reversible watermarking for 2D-vector maps | |
| CN108287971B (en) | CAD data generation 3D model method based on water jet application | |
| CN109584377A (en) | A kind of method and apparatus of the content of augmented reality for rendering | |
| JP2014085674A (en) | Method and device for encrypting 3d object by applying function changed by using secret key | |
| CN110222481A (en) | A kind of BIM model copyright protection spatial domain digital watermark method | |
| US20130249914A1 (en) | Method for Manipulating Three-Dimensional Voxel Data for On-Screen Visual | |
| CN103377455B (en) | A kind of three-dimensional geographical pattern number word water mark method towards copyright protection service | |
| CN105488360B (en) | A kind of suffix is the anti-fake processing method and device of the threedimensional model file of fbx forms | |
| CN116152460A (en) | Method, device, terminal and medium for generating rock stratum model based on UE4 | |
| CN105488362B (en) | A kind of suffix is the anti-fake processing method and device of the threedimensional model file of obj forms | |
| Winnemöller et al. | Texture design and draping in 2d images | |
| Du | Protection of Intangible Cultural Heritage Based on VR: Taking Xiuyan Jade Carving Craft as an Example | |
| Li et al. | Copyright authentication of digital vector maps based on spatial autocorrelation indices | |
| CN113420317A (en) | Encryption storage method and system for three-dimensional model | |
| CN105512522B (en) | A kind of suffix is the anti-fake processing method and device of the threedimensional model file of 3ds formats | |
| CN104574473A (en) | Method and device for generating dynamic effect on basis of static image | |
| CN103903218B (en) | Robust geographic data watermarking method for public ownership verification | |
| CN110111231A (en) | Watermark embedding method, device, equipment and computer readable storage medium | |
| CN109635905A (en) | Two-dimensional code generation method, apparatus and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180601 Termination date: 20211127 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |