CN105551078A - Method and system of virtual imaging of broken cultural relics - Google Patents

Method and system of virtual imaging of broken cultural relics Download PDF

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Publication number
CN105551078A
CN105551078A CN201510872891.4A CN201510872891A CN105551078A CN 105551078 A CN105551078 A CN 105551078A CN 201510872891 A CN201510872891 A CN 201510872891A CN 105551078 A CN105551078 A CN 105551078A
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point cloud
historical relic
overall
dimensional point
dimensional model
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侯妙乐
胡云冈
吴育华
张向前
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Beijing University of Civil Engineering and Architecture
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Beijing University of Civil Engineering and Architecture
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T17/00Three dimensional [3D] modelling, e.g. data description of 3D objects
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T15/003D [Three Dimensional] image rendering
    • G06T15/04Texture mapping

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  • Physics & Mathematics (AREA)
  • Computer Graphics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Geometry (AREA)
  • Software Systems (AREA)
  • Processing Or Creating Images (AREA)

Abstract

The present invention relates to the field of the image display technology, and especially to a method and system of virtual imaging of broken cultural relics. The method provided by the invention comprises: splicing each remaining part of a broken cultural relic; respectively collecting three-dimensional point cloud data and color images of each remaining part; splicing the collected three-dimensional point cloud data of each remaining part, and constructing the whole three-dimensional model of the broken cultural relic; fitting the collected color image of each remaining part to corresponding position of the whole three-dimensional model, and creating the whole color three-dimensional model of the broken cultural relic; and displaying the whole color three-dimensional model. The method of virtual imaging of broken cultural relics provided by the invention is able to construct the whole color three-dimensional model according to the three-dimensional point cloud data and color images of each remaining part of a broken cultural relic, so that the whole appearance of the broken cultural relic may be comprehensively displayed.

Description

A kind of broken historical relic virtual image method and system
Technical field
The present invention relates to image shows technical field, particularly relate to a kind of broken historical relic virtual image method and system.
Background technology
Historical relic is the important item embodying human society historical upheaval and custom cultural development, significant to the development of modern civilization.But due to the impact of mankind's activity and physical environment, many historical relics there occurs fragmentation.
The method of the broken historical relic of current displaying is spliced by each fragment of broken historical relic, obtains the photo of spliced historical relic, carries out two-dimentional product face show spliced historical relic.But this method is unfavorable for that people are comprehensively familiar with historical relic.
Summary of the invention
In order to show the overall appearance of broken historical relic in all directions, the invention provides a kind of broken historical relic virtual image method and system.
First aspect, the invention provides a kind of broken historical relic virtual image method, comprising:
Each splicing broken historical relic retains position;
Gather each three dimensional point cloud retaining position and chromatic image respectively;
Each collecting is retained to the three dimensional point cloud splicing at position, and build the overall three-dimensional model of broken historical relic;
The chromatic image each collecting being retained position fits to the relevant position of described overall three-dimensional model, creates the overall colorful three-dimensional model of broken historical relic;
Show described overall colorful three-dimensional model.
Further, described each retains the three dimensional point cloud at position, comprising:
Each three dimensional point cloud retaining the multiple angle in position.
Further, the described overall colorful three-dimensional model of described displaying, comprising:
Show instruction according to section, show the sectional view of the corresponding section of broken historical relic; Described section shows that instruction is the instruction of the cross section place information comprising broken historical relic.
Further, the described overall colorful three-dimensional model of described displaying, comprising:
Instruction is shown, the corresponding dimension information of the broken historical relic of outstanding displaying according to size; Described size shows that instruction is the instruction comprising the volume of broken historical relic or the length information at each position.
Further, before the described overall colorful three-dimensional model of described displaying, also comprise:
The incomplete position of the overall colorful three-dimensional model of completion and incomplete decorative pattern.
Further, the incomplete decorative pattern of the overall colorful three-dimensional model of described completion, comprising:
Adopt the incomplete decorative pattern of the overall colorful three-dimensional model of electronics Freehandhand-drawing method completion.
Further, the overall three-dimensional model of the broken historical relic of described structure, comprising:
The integrated triangular net lattice model of broken historical relic is built according to spliced three dimensional point cloud;
Described integrated triangular net lattice model is encapsulated, grid inspection optimization, holes filling and simplification, build the overall three-dimensional model of broken historical relic.
Further, the described three dimensional point cloud splicing each collecting being retained to position, comprising:
The three dimensional point cloud each collecting being retained to position carries out denoising;
Each after denoising is retained to the three dimensional point cloud splicing at position.
Further, the described three dimensional point cloud splicing each collecting being retained to position, comprising:
Unnecessary three dimensional point cloud is removed, the three dimensional point cloud of completion disappearance according to three dimensional point cloud housekeeping instruction;
Described unnecessary three dimensional point cloud, comprising: the three dimensional point cloud containing rough error and retain the irrelevant three dimensional point cloud at position with this;
The three dimensional point cloud of splicing through retaining position according to each after the process of three dimensional point cloud housekeeping instruction.
Second aspect, the invention provides a kind of broken historical relic virtual imaging system, comprising:
Data collector, for gathering broken historical relic respectively, each retains three dimensional point cloud and the chromatic image at position;
Model construction device, for retaining the three dimensional point cloud splicing at position to each collecting, and builds the overall three-dimensional model of broken historical relic;
Described model construction device, the chromatic image also for each collecting being retained position fits to the relevant position of described overall three-dimensional model, creates the overall colorful three-dimensional model of broken historical relic;
Exhibiting device, for showing described overall colorful three-dimensional model
Broken historical relic virtual image method provided by the invention, retains position by each splicing broken historical relic; Gather each three dimensional point cloud retaining position and chromatic image respectively; Each collecting is retained to the three dimensional point cloud splicing at position, and build the overall three-dimensional model of broken historical relic; The chromatic image each collecting being retained position fits to the relevant position of described overall three-dimensional model, creates the overall colorful three-dimensional model of broken historical relic; Show described overall colorful three-dimensional model.Thus the overall appearance of broken historical relic can be shown in all directions.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the broken historical relic virtual image method that first embodiment of the invention provides;
Fig. 2 is the structural representation of the broken historical relic virtual imaging system that second embodiment of the invention provides;
Fig. 3 is the three-dimensional model schematic diagram of cylinder body;
Fig. 4 is the three-dimensional model schematic diagram at the incomplete position of cylinder base;
Cross-sectional upper thread schematic diagram before Fig. 5 is the incomplete position of cylinder body completion and after the incomplete position of completion;
Buttock line schematic diagram before Fig. 6 is the incomplete position of cylinder body completion and after the incomplete position of completion;
Fig. 7 is the colorful three-dimensional model schematic diagram according to the three dimensional point cloud of cylinder body body and the cylinder body body of color texture data creation;
Fig. 8 is the colorful three-dimensional model schematic diagram according to the three dimensional point cloud of bottom cleavage block and the bottom cleavage block of color texture data creation;
Fig. 9 is the colorful three-dimensional model schematic diagram of the cylinder body body before completion decorative pattern and after completion decorative pattern;
Figure 10 is that cylinder side wall decorative pattern launches schematic diagram.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is further described.Following examples only for technical scheme of the present invention is clearly described, and can not limit the scope of the invention with this.
First embodiment of the invention provides a kind of broken historical relic virtual image method, it is characterized in that, comprising:
Step S1, each splicing broken historical relic retains position;
Step S2, gathers each three dimensional point cloud retaining position and chromatic image respectively;
Step S3, retains the three dimensional point cloud splicing at position, and builds the overall three-dimensional model of broken historical relic to each collecting;
Step S4, the chromatic image each collecting being retained position fits to the relevant position of described overall three-dimensional model, creates the overall colorful three-dimensional model of broken historical relic;
Step S5, shows described overall colorful three-dimensional model.
Broken historical relic virtual image method provided by the invention, retains position by each splicing broken historical relic; Gather each three dimensional point cloud retaining position and chromatic image respectively; Each collecting is retained to the three dimensional point cloud splicing at position, and build the overall three-dimensional model of broken historical relic; The chromatic image each collecting being retained position fits to the relevant position of described overall three-dimensional model, creates the overall colorful three-dimensional model of broken historical relic; Show described overall colorful three-dimensional model.Thus the overall appearance of broken historical relic can be shown in all directions.
In the specific implementation, described each retains the three dimensional point cloud at position, comprising:
Each three dimensional point cloud retaining the multiple angle in position.
Like this can under avoiding damaging broken historical relic each retain the prerequisite at position, each retains the shape and size at position to restore broken historical relic truly, and ensures the complete of the three dimensional point cloud gathered.
In the specific implementation, described step S5, can comprise:
Show instruction according to section, show the sectional view of the corresponding section of broken historical relic; Described section shows that instruction is the instruction of the cross section place information comprising broken historical relic.
The profile information of the corresponding section of broken historical relic so can be checked according to user's request.
In the specific implementation, described step S5, can comprise:
Instruction is shown, the corresponding dimension information of the broken historical relic of outstanding displaying according to size; Described size shows that instruction is the instruction comprising the volume of broken historical relic or the length information at each position.
User so can be facilitated to understand the full-size(d) at each position of historical relic to be broken.Such as can give prominence to the information such as volume, length, width or the height showing some positions of broken historical relic or broken historical relic, thus user be had broken historical relic be familiar with more all sidedly.
In the specific implementation, before described step S5, described method, can comprise:
The incomplete position of the overall colorful three-dimensional model of completion and incomplete decorative pattern.
So, the outward appearance before historical relic damage can be shown for user.
In the specific implementation, can the manually incomplete position of the overall colorful three-dimensional model of completion and incomplete decorative pattern.In the specific implementation, also auto-complete the incomplete position of the overall colorful three-dimensional model of completion and incomplete decorative pattern can be treated.But this mode is meticulous not as the overall colorful three-dimensional model in conjunction with completion after manual analysis.
In the specific implementation, the incomplete decorative pattern of the overall colorful three-dimensional model of described completion, can comprise:
Adopt the incomplete decorative pattern of the overall colorful three-dimensional model of electronics Freehandhand-drawing method completion.
The benefit of design like this is, from aesthstic angle, can analyze the structure of the decorative pattern of whole broken historical relic, comprising: the element such as style of writing, color, dynamics, the depth, deep or light, symmetry.Repair principle according to historical relic: minimum of interference, reversible, can reprocessing, identifiable design, restoring the old as the old etc., need completion part to carry out scheme to disappearance and determine, select the mode of electronics Freehandhand-drawing to input decorative pattern completion instruction.Make reasonable link according to residual part style of writing with similar pattern, draw out general form, follow entirety---locally---overall drawing principle, then adjust form, visually reach natural linking.Carry out the linking of color according to residual part, analyze style of writing, color, dynamics, the depth, deep or light etc., finally adjust panchromatic edge, make the decorative pattern natural harmony of completion.
In the specific implementation, the overall three-dimensional model of the broken historical relic of described structure, can comprise:
The integrated triangular net lattice model of broken historical relic is built according to spliced three dimensional point cloud;
Described integrated triangular net lattice model is encapsulated, grid inspection optimization, holes filling and simplification, build the overall three-dimensional model of broken historical relic.
So can construct the overall three-dimensional model of broken historical relic fast.
In the specific implementation, the described three dimensional point cloud splicing each collecting being retained to position, comprising:
The three dimensional point cloud each collecting being retained to position carries out denoising;
Each after denoising is retained to the three dimensional point cloud splicing at position.
The benefit of design like this is, the colorful three-dimensional model of broken historical relic can be made more clear.
In the specific implementation, the described three dimensional point cloud splicing each collecting being retained to position, comprising:
Unnecessary three dimensional point cloud is removed, the three dimensional point cloud of completion disappearance according to three dimensional point cloud housekeeping instruction;
Described unnecessary three dimensional point cloud, comprising: the three dimensional point cloud containing rough error and retain the irrelevant three dimensional point cloud at position with this;
The three dimensional point cloud of splicing through retaining position according to each after the process of three dimensional point cloud housekeeping instruction.
The benefit of design like this is, can remove the part irrelevant with the three-dimensional model of broken historical relic.
In the specific implementation, the chromatic image collected can be carried out illumination and color rendition process, then the chromatic image after illumination and color rendition process is fitted to the relevant position of described overall three-dimensional model, create the overall colorful three-dimensional model of broken historical relic.
So, the color of the overall colorful three-dimensional model of broken historical relic can be made more to meet the realistic colour of broken historical relic.
In the specific implementation, can show that instruction shows colorful three-dimensional model from corresponding visual angle according to visual angle; Described visual angle shows that instruction is the instruction containing the Viewing-angle information showing visual angle.
The benefit of design like this is, can according to the needs of user, and emphasis shows broken historical relic or a certain position of the broken historical relic profile on some directions, facilitates the privileged site of user to broken historical relic to observe.
In the specific implementation, when receiving the adjustment instruction of user's input, can zoom in or out to the corresponding site of broken historical relic or broken historical relic according to described adjustment instruction.
Based on identical design, the second embodiment of the present invention provides a kind of broken historical relic virtual imaging system, as shown in Figure 2, comprising:
Data collector 201, for gathering each three dimensional point cloud retaining position and chromatic image respectively;
Model construction device 202, for retaining the three dimensional point cloud splicing at position to each collecting, and builds the overall three-dimensional model of broken historical relic;
Model construction device 202, the chromatic image also for each collecting being retained position fits to the relevant position of described overall three-dimensional model, creates the overall colorful three-dimensional model of broken historical relic;
Exhibiting device 203, for showing described overall colorful three-dimensional model.
In the specific implementation, data collector 201, can comprise:
Portable absolute arm joint arm laser measuring machine, for retaining the three dimensional point cloud at position from each of multiple angle acquisition historical relic to be presented;
Digital camera, for after correct white balance, from the color texture information data at each position of multiple angle acquisition historical relic to be presented.
The precision of the surface point cloud data acquisition each being retained to position can be improved with portable absolute arm joint arm laser measuring machine.In the specific implementation, common joint arm also can be adopted to gather the cloud data that each retains position, but the cloud data precision that common joints arm gathers is lower, accurately can not show the real conditions that each retains position.Adopt digital camera to gather the color texture information that each retains position, accurately can reflect that each retains the realistic colour at position.
Logarithmic code camera carries out white balance correction, and the chromatic image of collection can be made to reach correct color balance.
In the specific implementation, exhibiting device 203, can be specifically for:
Described overall colorful three-dimensional model is shown with software or form web page.
Below to be described native system in blue and white fish algae line cylinder virtual image the bright Jiajin Year broken historical relic virtual imaging system provided by the invention being applied to Metropolitan Museum collection, this, blue and white fish algae line cylinder comprised in bright Jiajin Year: cylinder body body and bottom cleavage block.
Cylinder body body and bottom cleavage block are spliced.
Adopt portable absolute arm joint arm laser measuring machine ROMER from the three dimensional point cloud of multiple angle non-contact capture cylinder body body and bottom cleavage block.Portable absolute arm joint arm laser measuring machine ROMER is a high precision contactless portable formula absolute arm joint arm measuring machine.Sweep span is about 0.15mm, and some cloud point medial error is no more than 0.25mm.When scanning, portable absolute arm joint arm laser measuring machine putting position, as far as possible away from the surface of cylinder body body and bottom cleavage block, slow in one's movementsly during scanning to carry out, and avoids joint arm move fast and touch cylinder body body and bottom cleavage block on a large scale.
Adopt and be equipped with NikonAFS24-80ED camera lens, the slr camera Nikon NikonD4 cover machine collection cylinder body body of Nikon AFZoom-Nikkor80-200mmf/2.8DED camera lens and the chromatic image of bottom cleavage block, its resolution is not less than 300DPI.Nikon NikonD4 overlaps machine and is arranged on hundred promise A1682TB0 camera trivets.
In the specific implementation, utilize the intensity of light and shadow shield light regulating to adapt to the light demand gathered three dimensional point cloud and the chromatic image of cylinder body body and bottom cleavage block.
Due to this cylinder body mainly white end and cyan decorative pattern two kinds of obvious colors of contrast, when scanning for joint arm, exposure parameter is provided with impact, if exposure settings is more weak, white portion can be gathered very well, if exposure settings can gather cyan areas more by force very well, both can corresponding omission some be not suitable with the region of exposure settings, therefore need repeatedly to scan to increase a cloud density to cylinder surface, ensure that implements surface data is complete.Scan period, the tripod of joint arm must maintain static, and therefore two tiptoe portions are placed in floor ceramic tile gap place, the 3rd foot rest tip uses fixing rubber to keep stable.Make at the three dimensional point cloud gathering each position of cylinder body, the catoptron of portable absolute arm joint arm laser measuring machine ROMER keeps vertical with cylinder surface.
When adopting digital camera to photograph to cylinder body, because cylinder surface is smooth, easily producing high-brightness light district, local, having a significant impact affecting quality, need under darker scattered beam, carry out the shooting of flashless lamp long exposure.In order to reduce the impact that external light causes color of object as far as possible, the original color of target subject can be restored under different colour temperature conditions, just need logarithmic code camera to carry out white balance correction, to reach correct color balance, obtain the real color of target.
In the specific implementation, gather the three dimensional point cloud on the inside and outside surface of cylinder body body, and the three dimensional point cloud of bottom cleavage block, the number of the three dimensional point cloud collected is as shown in table 1.
Table 1 cylinder body three dimensional point cloud is added up
Scanning position Surface point cloud number (ten thousand)
Cylinder body body outer wall 6382.3
Cylinder body inner body wall 3175.7
Bottom cleavage block 1761.1
Integral bottom 1760.0
According to the three dimensional point cloud collected, the three-dimensional model of the cylinder body of structure as shown in Figure 3.Fig. 4 is the three-dimensional model at the incomplete position of cylinder base of completion.Cross-sectional upper thread schematic diagram before Fig. 5 is the incomplete position of cylinder body completion and after the incomplete position of completion, the buttock line schematic diagram before Fig. 6 is the incomplete position of cylinder body completion and after the incomplete position of completion.
When receiving the size instructions of user's input, such as, comprising the size instructions of cylinder port height and width, while this body three-dimensional models of displaying cylinder body, the height and width of showing cylinder body body can be given prominence to.When size instructions comprises the volume information of the radius of cylinder base, the thickness of cylinder body and cylinder body body, when showing cylinder base three-dimensional model, the outstanding volume showing the bottom radius of cylinder body, the thickness of cylinder body and cylinder body body.When size instructions comprises the bottom information such as the port diameter of cleavage block and the volume of bottom cleavage block, when showing the three-dimensional model of bottom cleavage block, the outstanding displaying bottom port diameter of cleavage block and the volume of bottom cleavage block.So can in conjunction with the density of vat quality analysis cylinder body.
According to the colorful three-dimensional model of the three dimensional point cloud of cylinder body body and the cylinder body body of color texture data genaration as shown in Figure 7.According to the bottom cleavage block colorful three-dimensional model of the three dimensional point cloud of bottom cleavage block and color texture data genaration as shown in Figure 8.Fig. 9 is the schematic diagram of the decorative pattern of completion cylinder body body.
In the specific implementation, when receiving the displaying cylinder side wall decorative pattern instruction of user's input, cylinder side wall decorative pattern is launched display, as shown in Figure 10.The decorative pattern that user can choose arbitrarily local amplifies, and checks.
In the specific implementation, also can carry out amplification to any part of the colorful three-dimensional model of cylinder body to show.Such as, user can amplify bottom outer wall of cylinder block, checks that burning makes crackle.
In the specific implementation, the three-dimensional model of cylinder body can be shown in stand-alone software or webpage.In addition, when user wants to obtain the out of Memory of cylinder surface, as cylinder body mended the length of nail, width and coordinate time with cramps, any one curium nail can be chosen, obtain the length of this curium nail, width and coordinate.User also can choose any one curium nail, obtains the length of this curium nail, width and coordinate.In the specific implementation, user can add up the size and size mending nail and curium nail with cramps.
Adopt broken historical relic virtual imaging system provided by the invention, the overall image of cylinder body can be shown by stereoscopic and omnibearing.The existing information of detailed preservation cylinder body, comprises type, decorative pattern, size, cylinder bottom damaged place size, cylinder body and cylinder bottom crack position, cylinder bottom port, curium nail number, curium nail dimension and curium nail position etc.By data processing, the statistics of decorative pattern, crackle, fracture, curium nail or curium nail etc. effectively can be extracted, can local enlargement display, also highlighting.For repair provides auxiliary, simulate damaged splicing, design the size of the infull material at indivedual defect place, shape and colouring information.Can, according to the original color three-dimensional model of the cylinder body created, 3D printing technique be adopted to print the part of cylinder body.In addition, the curium porcelain technique picture information that can provide according to curium porcelain information and the Metropolitan Museum of cylinder body, coordinates native system Dynamic Display can mend porcelain technique with cramps ancient times, even can show that the burning of the huge porcelain of cylinder body class makes process.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (10)

1. a broken historical relic virtual image method, is characterized in that, comprising:
Each splicing broken historical relic retains position;
Gather each three dimensional point cloud retaining position and chromatic image respectively;
Each collecting is retained to the three dimensional point cloud splicing at position, and build the overall three-dimensional model of broken historical relic;
The chromatic image each collecting being retained position fits to the relevant position of described overall three-dimensional model, creates the overall colorful three-dimensional model of broken historical relic;
Show described overall colorful three-dimensional model.
2. method according to claim 1, is characterized in that, described each retains the three dimensional point cloud at position, comprising:
Each three dimensional point cloud retaining the multiple angle in position.
3. method according to claim 1, is characterized in that, the described overall colorful three-dimensional model of described displaying, comprising:
Show instruction according to section, show the sectional view of the corresponding section of broken historical relic; Described section shows that instruction is the instruction of the cross section place information comprising broken historical relic.
4. method according to claim 1, is characterized in that, the described overall colorful three-dimensional model of described displaying, comprising:
Instruction is shown, the corresponding dimension information of the broken historical relic of outstanding displaying according to size; Described size shows that instruction is the instruction comprising the volume of broken historical relic or the length information at each position.
5. method according to claim 1, is characterized in that, before the described overall colorful three-dimensional model of described displaying, also comprises:
The incomplete position of the overall colorful three-dimensional model of completion and incomplete decorative pattern.
6. method according to claim 5, is characterized in that, the incomplete decorative pattern of the overall colorful three-dimensional model of described completion, comprising:
Adopt the incomplete decorative pattern of the overall colorful three-dimensional model of electronics Freehandhand-drawing method completion.
7. method according to claim 1, is characterized in that, the overall three-dimensional model of the broken historical relic of described structure, comprising:
The integrated triangular net lattice model of broken historical relic is built according to spliced three dimensional point cloud;
Described integrated triangular net lattice model is encapsulated, grid inspection optimization, holes filling and simplification, build the overall three-dimensional model of broken historical relic.
8. method according to claim 1, is characterized in that, the described three dimensional point cloud splicing each collecting being retained to position, comprising:
The three dimensional point cloud each collecting being retained to position carries out denoising;
Each after denoising is retained to the three dimensional point cloud splicing at position.
9. method according to claim 1, is characterized in that, the described three dimensional point cloud splicing each collecting being retained to position, comprising:
Unnecessary three dimensional point cloud is removed, the three dimensional point cloud of completion disappearance according to three dimensional point cloud housekeeping instruction;
Described unnecessary three dimensional point cloud, comprising: the three dimensional point cloud containing rough error and retain the irrelevant three dimensional point cloud at position with this;
The three dimensional point cloud of splicing through retaining position according to each after the process of three dimensional point cloud housekeeping instruction.
10. a broken historical relic virtual imaging system, is characterized in that, comprising:
Data collector, for gathering broken historical relic respectively, each retains three dimensional point cloud and the chromatic image at position;
Model construction device, for retaining the three dimensional point cloud splicing at position to each collecting, and builds the overall three-dimensional model of broken historical relic;
Described model construction device, the chromatic image also for each collecting being retained position fits to the relevant position of described overall three-dimensional model, creates the overall colorful three-dimensional model of broken historical relic;
Exhibiting device, for showing described overall colorful three-dimensional model.
CN201510872891.4A 2015-12-02 2015-12-02 Method and system of virtual imaging of broken cultural relics Pending CN105551078A (en)

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