CN107564092A - Method based on MATLAB according to picture quick Fabrication ceramic relief - Google Patents
Method based on MATLAB according to picture quick Fabrication ceramic relief Download PDFInfo
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- CN107564092A CN107564092A CN201710618142.8A CN201710618142A CN107564092A CN 107564092 A CN107564092 A CN 107564092A CN 201710618142 A CN201710618142 A CN 201710618142A CN 107564092 A CN107564092 A CN 107564092A
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Abstract
Method based on MATLAB according to picture quick Fabrication ceramic relief, comprises the following steps：(1) picture gray value is read；Gray-scale map is converted picture into using MATLAB, ultimately generates gray matrix I；(2) matrix interpolation is with putting cloud serialization；Gray matrix I for three-dimensional coordinate and is subjected to the new matrix H H and LL of interpolation generation by row, by row expansion output respectively；(3) processing of cloud cladding is put；A new matrix B B is established, new matrix B B three-dimensional coordinate surrounds the three-dimensional coordinate of original picture；(4) reverse-engineering；Threedimensional model will be built up after points cloud processing and is exported；(5) 3D printing stamp；Using 3D printing technique by the three dimensional model printing of previous step, stamp is produced；(6) press back is molded；The stamp printed using previous step prints base substrate, moulding moulage；(7) ceramic firing.The invention belongs to it is time-consuming it is short, make it is simple, in incorporeity model can rapid modeling shaping, low cost and other advantages, belong to technical field of ceramic preparation.
Description
Technical field
The invention belongs to technical field of ceramic preparation, more particularly to based on MATLAB according to picture quick Fabrication ceramic relief
Method.
Background technology
Stamp shaping be one of traditional pottery art forming technology, it have it is simple for production, time saving and energy saving, do not have to producer
The advantages of excessive skill requires, thus until the modern times, it still shapes the most important mode of production as pottery art and extensively should
With.Traditional moulding moulage refers to the shape by product, first makees stamp, and stamp is made of the pottery or gypsum of low temperature.Mud during printing
The mud plate of thickness, is embossed into shape in stamp needed for being made.For the method for traditional imprinting moulding, because the stamp of making can be with
It is used for multiple times, therefore in batch production, advantage embodies especially pronounced.However, during for small lot manual production, due to stamp
Fabrication cycle is longer, and required precision is higher, requires high for the skill of producer.Now, just can not be very the advantages of moulding moulage
It is good to embody；Therefore traditional moulding moulage is when small lot produces and inconvenient, and cost is high.
The content of the invention
Simply made pottery in view of the above-mentioned problems, the present invention provides time-consuming short, making based on MATLAB according to picture quick Fabrication
The method of porcelain embossment, it also has can rapid modeling shaping, low cost and other advantages in incorporeity model.
Method based on MATLAB according to picture quick Fabrication ceramic relief, comprises the following steps：
(1) picture gray value is read；Gray-scale map is converted picture into using MATLAB, ultimately generates gray matrix I；
(2) matrix interpolation is with putting cloud serialization；Gray matrix I is exported as three-dimensional coordinate simultaneously by row, by row expansion respectively
Carry out interpolation and generate new matrix H H and LL；
(3) processing of cloud cladding is put；A new matrix B B is established, new matrix B B three-dimensional coordinate sits the three-dimensional of original picture
Mark surrounds；
(4) reverse-engineering；Threedimensional model will be built up after points cloud processing and is exported；
(5) 3D printing stamp；Using 3D printing technique by the three dimensional model printing of previous step, stamp is produced；
(6) press back is molded；The stamp printed using previous step prints base substrate, moulding moulage；
(7) ceramic firing.
Preferably, when reading picture gray value, the function bag " imread " carried first with MATLAB reads picture, then uses
" rgb2gray " converts picture into gray-scale map, so as to extract the gray value of each pixel of picture, ultimately generates pixel institute
Corresponding gray matrix I.
Preferably, after gray matrix I expansion output, the insertion point between two consecutive points of the gray value more than 1, so as to shape
Into continuous point cloud, new matrix H H, LL is generated.Gray value represents color, is represented with 0-255, dimension 1.
Preferably, the three-dimensional coordinate (X, Y, Z) of gray matrix expansion output, (X, Y) is pixel point coordinates, and Z is pixel
Corresponding gray value.
Preferably, new matrix B B includes some frame matrixes, total by being generated after frame matrix, matrix H H, matrix L L processing
Point cloud matrix.
Preferably, in reverse-engineering, the point cloud of generation is imported in Geomagic Studio, curved surface is carried out to a cloud
Fitting, grid optimization processing, precise curved surface processing post package are processed into threedimensional model.
Preferably, grid optimization processing includes deleting feature, filling hole, relaxation, sharpening, simplification.
Preferably, cut into slices using 3D printing software Cura, and export the convenient G code for directly printing 3D models.
Preferably, in 3D printing stamp, printed using Micromake 3D printers, produce stamp.
Preferably, stamp is made up of plastic material.
Advantages of the present invention：
1st, the present invention is mended using MATLAB to plane picture progress gray proces so as to extract image information, then by matrix
Insert and export point cloud assembly after the serialization of point cloud, point cloud cladding processing；Therefore the present invention can quickly and easily produce ceramics
Embossment；, can be with rapid modeling when there is no physical model；Relatively low is required to operator's manual skill, modeling is accelerated, cost drop
It is low.
2nd, the present invention synthesizes matrix H H, matrix L L and frame matrix in total point cloud matrix after new matrix B B is established,
Therefore it when doing reverse-engineering, need to only import once, improve the speed for making the female print of ceramic relief.
3rd, the present invention carries out reverse-engineering using Geomagic Studio, can generate accurately three-dimensional digital model, greatly
Ground reduces design, the cycle of modeling.
4th, operated in grid optimization processing using deletion feature, filling hole, relaxation, sharpening, simplification etc., thus three-dimensional mould
Type is more regular smooth.
5th, the present invention makes master mold using 3D printing technique, makes master mold by hand relative to traditional gypsum or pottery mud, has
There is the advantages of easy, time saving, quick.
Brief description of the drawings
Fig. 1 is the general flow chart of the present invention.
Fig. 2 is the flow chart that first three in the embodiment of the present invention walks.
Fig. 3 is made the floor map of embossment by the embodiment of the present invention.
Fig. 4 is the point cloud chart after the processing of point cloud of embodiment of the present invention cladding.
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
It is the explanation of this line code after " % " symbol in MATLAB.
In the present embodiment, a cloud is handled using Geomagic Studio softwares.Geomagic Studio are general
For according to any parts in kind, the point cloud generated by scanning element to automatically generate accurate mathematical model.Again by
3 d scan data and polygonal network are converted into accurate three-dimensional digital model by Geomagic Studio, and can be exported
Various industries reference format, numerous file formats such as including STL, IGES, STEP and CAD.This let us can be by scanning
There is model realization to redirect design process, and designed since having nothing at all.It highly shortened design, the week of modeling
Phase.
The present invention is different from existing scanning technique again, but according to any pictures, it is carried out using MATLAB
Gray proces are handled so as to extract image information, then by a series of including matrix interpolation and point cloud serialization and point cloud cladding
Three-dimensional coordinate generation point cloud is exported afterwards.
Method based on MATLAB according to picture quick Fabrication ceramic relief, such as Fig. 1, comprises the following steps：
1st, picture gray value is read, picture is handled using MATLAB, so as to obtain the gray matrix I of picture.
2nd, matrix interpolation is with putting cloud serialization；It is three-dimensional coordinate that gray matrix I is exported by row expansion, obtains a new square
Battle array H, then to new matrix H interpolation generator matrix HH；It is three-dimensional coordinate that gray matrix I is exported by row expansion, obtains one newly
Matrix L, matrix L L then is formed to new matrix L interpolation.
3rd, the processing of cloud cladding is put；New matrix B a B, BB three-dimensional coordinate is established by the three-dimensional coordinate bag of original picture
Fence up；Total point cloud matrix file is exported again.
4th, reverse-engineering, after points cloud processing, threedimensional model is created as, threedimensional model exports as threedimensional model file.
5th, 3D printing stamp；The three dimensional model printing for being established previous step using existing 3D printing technique, is produced
Stamp.
6th, press back is molded；The stamp (master mold) printed according to previous step, print base substrate, moulding moulage.
7th, ceramic firing.
In the present embodiment, exemplified by making the ceramic relief of a baby elephant shape, carried out for above-mentioned each step detailed
Introduce.
1st, picture gray value is read.Will the picture of printer model be named as " cc.jpg ", and it is current to deposit in MATLAB
In the file of work, picture artwork is as shown in Figure 3.
It is as follows that code is write in MATLAB：
I=imread (' cc.jpg')；% reads in picture
I=rgb2gray (I)；% changes into grey figure
Gray matrix I is can obtain after operation.
2nd, matrix interpolation is with putting cloud serialization.By gray matrix I by row expansion output be three-dimensional coordinate, obtain one newly
Matrix H.Then interpolation generator matrix HH is carried out to new matrix, i.e., to gray value differences away from being inserted between two excessive consecutive points
Enough points, enough points are inserted between two consecutive points of the gray value more than 1 in the present embodiment, carry out transition processing.
It is as follows that code is write in MATLAB：
Row interpolation matrix H H is obtained after operation.
Similarly, it is three-dimensional coordinate by row expansion output by gray matrix I, a new matrix L is obtained, then to new matrix L
Interpolation, row interpolation matrix L L can be obtained.
3rd, the processing of cloud cladding is put.A new matrix B B is established, makes the three-dimensional coordinate that it is included by the three-dimensional of original picture
Coordinate is surrounded, that is, puts the processing of cloud cladding.It is as follows that code snippet is write in MATLAB：
Frame matrix B B1 is generated after operation, other matrixes can similarly generate.For convenience of output, then write following program generation
Code：
Total point cloud matrix Z is generated after operation, and it is txt file to export a cloud, and name file entitled " data.txt ".
4th, reverse-engineering.The point cloud generated is imported in Geomagic Studio, is further processed.Due to
In order to improve export point cloud efficiency during MATLAB processing, the amount of cloud data point is not very sufficient.So we need pair
Point cloud is filled hole operation, will put insertion hole in order on unordered Object Surface.Because some picture quality problems are produced
Raw error and some by the inevitable caused deviation of Geomagic Studio software algorithms, we are also needed to same
Point in plane be fitted to the operation of plane.We are packaged processing to the point cloud handled well afterwards, make software automatic
Surface fitting is generated, then is handled by a series of grid optimizations, such as：Delete the behaviour such as feature, filling hole, relaxation, sharpening, simplification
Make, make model more regular smooth.And the precise curved surface function of being carried by software, it is curved surface by grid conversion, enters traveling one
The refine of step.Finally, the model handled well can directly be saved as iges files by us, or be again converted to grid, be preserved
For stl files, prepared for ensuing 3D printing process.Effect is as shown in Figure 4 after reverse-engineering processing.
5th, 3D printing stamp.The model established according to previous step, using existing 3D printing technique, adopted in the present embodiment
Cut into slices with Cura, recycle Micromake 3D printers to be printed after exporting G code, produce stamp.
6th, press back is molded.Stamp (hand-pressing) method of forming is a kind of method to be molded using mould.Transported in the present invention
It is plastic mould, according to the master mold (stamp i.e. in previous step) printed in previous step, you can printing base substrate, print
Mold forming.During stamp will firmly uniformly, compress, base substrate the demoulding after have it is damaged to repair, unnecessary will scrape.This method can
Product with volume is replicated, much facilities are brought in ceramics are produced.
7th, ceramic firing.The principle of ceramics：CaO+SiO2--->CaSiO3.Ceramic to be fired is loaded casket first
Alms bowl, kiln time process about diel, temperature is at 1300 degree or so.Wicket is first built, firing of lighting a fire, fuel is loose bavin, and fire is seen in survey
Wait, grasp kiln temperature change, determine the time of ceasing fire.Ceramic firing is identical with general Production of Ceramics process in the present embodiment.
Above-described embodiment is invents preferable embodiment, but embodiments of the present invention are not limited by above-described embodiment
System, other any Spirit Essences without departing from the present invention with made under principle change, modification, replacement, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (10)
1. based on MATLAB according to the method for picture quick Fabrication ceramic relief, it is characterised in that：Comprise the following steps：
(1) picture gray value is read；Gray-scale map is converted picture into using MATLAB, ultimately generates gray matrix I；
(2) matrix interpolation is with putting cloud serialization；Gray matrix I for three-dimensional coordinate and is carried out by row, by row expansion output respectively
Interpolation generates new matrix H H and LL；
(3) processing of cloud cladding is put；Establish a new matrix B B, new matrix B B three-dimensional coordinate is by the three-dimensional coordinate bag of original picture
Enclose；
(4) reverse-engineering；Threedimensional model will be built up after points cloud processing and is exported；
(5) 3D printing stamp；Using 3D printing technique by the three dimensional model printing of previous step, stamp is produced；
(6) press back is molded；The stamp printed using previous step prints base substrate, moulding moulage；
(7) ceramic firing.
2. the method based on MATLAB according to picture quick Fabrication ceramic relief according to claim 1, it is characterised in that：Read
When taking picture gray value, the function bag " imread " that carries first with MATLAB reads picture, then with " rgb2gray " by picture
Switch to gray-scale map, so as to extract the gray value of each pixel of picture, ultimately generate the gray matrix I corresponding to pixel.
3. the method based on MATLAB according to picture quick Fabrication ceramic relief according to claim 1, it is characterised in that：Ash
After spending matrix I expansion outputs, the insertion point between two consecutive points of the gray value more than 1, so as to form continuous point cloud, generation
New matrix H H, LL.
4. the method based on MATLAB according to picture quick Fabrication ceramic relief according to claim 1, it is characterised in that：Ash
The three-dimensional coordinate (X, Y, Z) of matrix expansion output is spent, (X, Y) is pixel point coordinates, and Z is gray value corresponding to pixel.
5. the method based on MATLAB according to picture quick Fabrication ceramic relief according to claim 1, it is characterised in that：Newly
Matrix B B includes some frame matrixes, will generate total point cloud matrix after frame matrix, matrix H H, matrix L L processing.
6. the method based on MATLAB according to picture quick Fabrication ceramic relief according to claim 1, it is characterised in that：
In reverse-engineering, the point cloud of generation is imported in Geomagic Studio, a cloud is carried out a surface fitting, grid optimization processing,
Precise curved surface processing post package is processed into threedimensional model.
7. the method based on MATLAB according to picture quick Fabrication ceramic relief according to claim 6, it is characterised in that：Net
Lattice optimization processing includes deleting feature, filling hole, relaxation, sharpening, simplification.
8. the method based on MATLAB according to picture quick Fabrication ceramic relief according to claim 1, it is characterised in that：Adopt
Cut into slices with 3D printing software Cura, and export the convenient G code for directly printing 3D models.
9. the method according to claim 1 or 8 based on MATLAB according to picture quick Fabrication ceramic relief, its feature exist
In：In 3D printing stamp, printed using Micromake 3D printers, produce stamp.
10. the method based on MATLAB according to picture quick Fabrication ceramic relief according to claim 1, it is characterised in that：
Stamp is made up of plastic material.
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Cited By (5)
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| CN110861202A (en) * | 2019-11-29 | 2020-03-06 | 福建省佳美集团公司 | Batch production method of carved customized ceramic |
| CN111400788A (en) * | 2020-03-16 | 2020-07-10 | 大连理工大学 | Interactive 3D (three-dimensional) embossing method suitable for 3D printing |
| CN112518946A (en) * | 2020-11-02 | 2021-03-19 | 长沙学院 | Picture imaging ceramic die printing applique method |
| CN112829304A (en) * | 2021-02-25 | 2021-05-25 | 安踏（中国）有限公司 | Preparation method of shoe bottom part accessory with texture |
| CN114043717A (en) * | 2021-09-28 | 2022-02-15 | 河北科技大学 | Method for manufacturing shape-following sealing ring of automobile slide valve box based on photocuring 3D printing |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110861202A (en) * | 2019-11-29 | 2020-03-06 | 福建省佳美集团公司 | Batch production method of carved customized ceramic |
| CN110861202B (en) * | 2019-11-29 | 2021-04-09 | 福建省佳美集团公司 | Batch production method of carved customized ceramic |
| CN111400788A (en) * | 2020-03-16 | 2020-07-10 | 大连理工大学 | Interactive 3D (three-dimensional) embossing method suitable for 3D printing |
| CN111400788B (en) * | 2020-03-16 | 2022-09-16 | 大连理工大学 | Interactive 3D (three-dimensional) embossing method suitable for 3D printing |
| CN112518946A (en) * | 2020-11-02 | 2021-03-19 | 长沙学院 | Picture imaging ceramic die printing applique method |
| CN112829304A (en) * | 2021-02-25 | 2021-05-25 | 安踏（中国）有限公司 | Preparation method of shoe bottom part accessory with texture |
| CN114043717A (en) * | 2021-09-28 | 2022-02-15 | 河北科技大学 | Method for manufacturing shape-following sealing ring of automobile slide valve box based on photocuring 3D printing |
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Application publication date: 20180109 |