CN110356151A - A kind of automatic generation method and device in jade carving path - Google Patents
A kind of automatic generation method and device in jade carving path Download PDFInfo
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- 239000010977 jade Substances 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000011159 matrix material Substances 0.000 claims abstract description 263
- 238000013507 mapping Methods 0.000 claims abstract description 50
- 230000009466 transformation Effects 0.000 claims description 29
- PXFBZOLANLWPMH-UHFFFAOYSA-N 16-Epiaffinine Natural products C1C(C2=CC=CC=C2N2)=C2C(=O)CC2C(=CC)CN(C)C1C2CO PXFBZOLANLWPMH-UHFFFAOYSA-N 0.000 claims description 25
- 238000012545 processing Methods 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 11
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- 230000008859 change Effects 0.000 description 2
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- PCTMTFRHKVHKIS-BMFZQQSSSA-N (1s,3r,4e,6e,8e,10e,12e,14e,16e,18s,19r,20r,21s,25r,27r,30r,31r,33s,35r,37s,38r)-3-[(2r,3s,4s,5s,6r)-4-amino-3,5-dihydroxy-6-methyloxan-2-yl]oxy-19,25,27,30,31,33,35,37-octahydroxy-18,20,21-trimethyl-23-oxo-22,39-dioxabicyclo[33.3.1]nonatriaconta-4,6,8,10 Chemical compound C1C=C2C[C@@H](OS(O)(=O)=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2.O[C@H]1[C@@H](N)[C@H](O)[C@@H](C)O[C@H]1O[C@H]1/C=C/C=C/C=C/C=C/C=C/C=C/C=C/[C@H](C)[C@@H](O)[C@@H](C)[C@H](C)OC(=O)C[C@H](O)C[C@H](O)CC[C@@H](O)[C@H](O)C[C@H](O)C[C@](O)(C[C@H](O)[C@H]2C(O)=O)O[C@H]2C1 PCTMTFRHKVHKIS-BMFZQQSSSA-N 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
- B44B1/00—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled three-dimensionally for making single sculptures or models
- B44B1/006—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled three-dimensionally for making single sculptures or models using computer control means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
- B44B1/00—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled three-dimensionally for making single sculptures or models
- B44B1/06—Accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
- B44B3/00—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled substantially two- dimensionally for carving, engraving, or guilloching shallow ornamenting or markings
- B44B3/009—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled substantially two- dimensionally for carving, engraving, or guilloching shallow ornamenting or markings using a computer control means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
- B44B3/00—Artist's machines or apparatus equipped with tools or work holders moving or able to be controlled substantially two- dimensionally for carving, engraving, or guilloching shallow ornamenting or markings
- B44B3/06—Accessories, e.g. tool or work holders
Abstract
The invention discloses the automatic generation methods and device in a kind of jade carving path, which comprises 1), obtains the apex coordinate in region to be carved on jade；2) picture containing engraving content, is loaded into matrix, obtains pattern matrix；3), the coordinate in region to be carved and pattern to be carved are transformed into the same coordinate system, whether is located in pattern matrix after mapping according to the apex coordinate in region to be carved, judges whether to need to be extended pattern matrix；4), if so, extension pattern matrix；5), the corresponding pixel points in pattern matrix are mapped in region to be carved, the coordinate of the pixel after obtaining mapping, path is carved according to Coordinate generation of the pixel after mapping in region to be carved.Using the embodiment of the present invention, the formation efficiency in engraving path can be improved.
Description
Technical field
The present invention relates to a kind of generation method and device for carving path, be more particularly to a kind of jade carving path from
Dynamic generation method and device.
Background technique
Currently, China is jade consumption big country, possess the world's largest jade consumption market.It reforms and opens up to the outside world in the past 40 years,
Chinese jewels and jade industry achieves great development, and the engraving technology of jade shows unique characteristics, and jade product is dazzling, and category is numerous
It is more.With the continuous improvement of people's living standard, more and more people buy jade product.
Currently, the production of jadeware product is all responsible for by jade carving teacher, carved from being designed into, then finished product to the end,
It can be described as whole control, this is most common situation.It is also few to determine jade carving teacher even if consumer has special demand
The case where mentality of designing, it may be said that the idea of jade carving teacher is to occupy the status of governance property forever in jade carving production
's.However nowadays like and buy the customer group of jadeware gradually to transformation after 80s, after 90s, their consumption pattern tends to
Personalization, while pursuing quality inside with strong personal preference, pursue personalized jade carving it is private it is customized can
To meet their consumption demand.There is no the jewelry jade objects as Cartier, Tiffany with distinct design style in China
Brand.But jade is customized just to can be good at meeting personalized consumption demand, consumer can be according to oneself economic shape
The targetedly customized jadeware for being suitble to them such as condition, occupation, identity, makings, age.Jade is customized because meeting consumer's
Individual demand and it is more and more popular with consumers.Therefore, how to meet the individual demand of client is technology urgently to be resolved
Problem.
Consumer is often desirable to for name, pattern or motto etc. being engraved on jade, still, if consumer personalization
When what is customized is the figure of hand-written word or Freehandhand-drawing, needs manually to pass through finishing impression Software Create engraving path, cause to carve path
Formation efficiency it is lower.
Summary of the invention
Technical problem to be solved by the present invention lies in provide the automatic generation method and dress in a kind of jade carving path
It sets, to improve the formation efficiency in engraving path.
The present invention is to solve above-mentioned technical problem by the following technical programs:
The embodiment of the invention provides a kind of automatic generation methods in jade carving path for this, which comprises
1) apex coordinate in region to be carved on jade, is obtained；
2) picture containing engraving content, is loaded into matrix, obtains pattern matrix；
3), the coordinate in region to be carved and pattern to be carved are transformed into the same coordinate system, according to region to be carved
Whether apex coordinate is located in pattern matrix after mapping, judges whether to need to be extended pattern matrix；
4), if so, extension pattern matrix；
5), the corresponding pixel points in pattern matrix are mapped in region to be carved, the seat of the pixel after obtaining mapping
Mark carves path according to Coordinate generation of the pixel after mapping in region to be carved.
Optionally, before step 2), the method also includes:
Judge that can the apex coordinate in region to be carved form setting shape, if so, executing step 2), is held if it is not, returning
Row step 1), wherein the shape that sets is rectangle.
Optionally, the step 2), comprising:
Pattern to be carved is obtained, according to setting the scale bar of image to be carved for the pattern Mapping to be carved to matrix
In, wherein the scale bar is the ratio between the scale and regional scale to be carved of image to be carved.
Optionally, the step 3), comprising:
The apex coordinate in region to be carved is mapped in pattern matrix, using formula,Coordinate of the vertex in region to be carved in pattern matrix is obtained, and
Obtain the abscissa minimum value of respective coordinates of the apex coordinate in region to be carved in pattern matrix and the maximum of ordinate
Value, wherein
PiIt .x is the abscissa N with i-th point after mappingi.x corresponding abscissa；P00.x former for the coordinate of CNC model
The abscissa of point corresponding point in pattern matrix；NiIt .x is i-th point of abscissa；I is serial number a little；image_scale
For the scale bar of picture；PiIt .y is the ordinate N with i-th point after mappingi.x corresponding ordinate；P00It .y is CNC model
Coordinate origin corresponding point in pattern matrix ordinate；NiIt .y is i-th point of ordinate；N is region to be carved top
The quantity of point；
The minimum value and ordinate for judging the abscissa of respective coordinates of the apex coordinate in pattern matrix are most
Whether big value is in the range of pattern matrix；If it is not, determining to need to extend pattern matrix, and execute step 5)；If so, sentencing
Surely extension pattern matrix is not needed, step 4) is then executed.
Optionally, during extending pattern matrix, the columns of the pixel of extended matrix is updated using following formula:
Its
In,
Mat_extend.cols is the columns of the pixel of extended matrix；NDst_rect_min_x is region to be carved
The abscissa minimum value of respective coordinates of the apex coordinate in pattern matrix；Mat_src.cols is the pixel point range of pattern matrix
Number；
The line number of the pixel of extended matrix is updated using following formula:
Wherein,
Mat_extend.rows is the line number of the pixel of extended matrix；NDst_rect_max_y is region to be carved
The ordinate maximum value of respective coordinates of the apex coordinate in pattern matrix；Mat_src.rows is the pixel row of pattern matrix
Number.
Optionally, the step 5), comprising:
The noise in extended matrix is removed, and gray processing, binary conversion treatment are carried out to extended matrix, obtains two-value Gray Moment
Battle array；
Obtain the minimum circumscribed rectangle of the pixel corresponding with engraving content in the two-value gray matrix；
According to the height in the region wide, to be carved in region to be carved, minimum circumscribed rectangle is wide and the height of minimum circumscribed rectangle,
Using formula,Obtain area to be carved
The height of the wide wide ratio and region to be carved relative to the minimum circumscribed rectangle in domain is relative to the minimum circumscribed rectangle
High ratio, wherein
Width_scale is the wide wide ratio relative to minimum circumscribed rectangle in region to be carved； rRect_
Dst.size.width is the width in region to be carved；Min_distance is minimum safe distance；Image_scale is picture
Scale bar；RRect_before.size.width is the width of minimum circumscribed rectangle；Height_scale is the height in region to be carved
High ratio relative to minimum circumscribed rectangle；RRect_dst.size.height is the height in region to be carved； rRect_
Before.size.height is the height of minimum circumscribed rectangle；
The height of the wide wide ratio and region to be carved relative to the minimum circumscribed rectangle in region to be carved is opposite
Scaling of the smaller value as pattern matrix in the high ratio of the minimum circumscribed rectangle, and according to the scaling
And the size of the minimum circumscribed rectangle of pattern matrix, using formula,Obtain the central point of target rectangle
The width and height of coordinate and target rectangle, wherein
RRect_after.angle is the angle of target rectangle；RRect_dst.angle is the angle in region to be carved；
RRect_after.center is the center of target rectangle；RRect_dst.center is the center in region to be carved；rRect_
After.size.width is the width of target rectangle；RRect_before.size.width is the width of minimum circumscribed rectangle；
Shrink_scale is scaling；RR ec t_a f t.e r.s is the height of target rectangle； rRect_
Before.size.height is the height of minimum circumscribed rectangle；
According to the corresponding relationship between target rectangle and minimum circumscribed rectangle, obtain target rectangle and minimum circumscribed rectangle it
Between affine transformation matrix, and radiation transformation is carried out to minimum circumscribed rectangle according to the affine transformation matrix；
Path is carved according to the Coordinate generation of the pixel of the minimum circumscribed rectangle after affine transformation.
The embodiment of the invention provides a kind of automatically generating device in jade carving path, described device includes:
First obtains module, for obtaining the apex coordinate in region to be carved on jade；
The picture containing engraving content is loaded into matrix, obtains pattern matrix；
First judgment module, for the coordinate in region to be carved and pattern to be carved to be transformed into the same coordinate system, root
Whether it is located in pattern matrix after mapping according to the apex coordinate in region to be carved, judges whether to need to carry out pattern matrix
Extension；
Expansion module, for extending pattern matrix in the case where the judging result of first judgment module, which is, is；
Second obtains module, for the corresponding pixel points in pattern matrix to be mapped in region to be carved, obtains mapping
The coordinate of pixel afterwards carves path according to Coordinate generation of the pixel after mapping in region to be carved.
Optionally, described first module is obtained, is used for:
Judge that can the apex coordinate in region to be carved form setting shape, if so, obtaining region to be carved on jade
Apex coordinate, if it is not, load containing engraving content picture into matrix, obtain pattern matrix, wherein it is described set shape as
Rectangle.
A kind of automatic generation method and device in jade carving path, described first obtains module, is used for:
Pattern to be carved is obtained, according to setting the scale bar of image to be carved for the pattern Mapping to be carved to matrix
In, wherein the scale bar is the ratio between the scale and regional scale to be carved of image to be carved.
Optionally, the first judgment module, is used for:
The apex coordinate in region to be carved is mapped in pattern matrix, using formula,Coordinate of the vertex in region to be carved in pattern matrix is obtained, and
Obtain the abscissa minimum value of respective coordinates of the apex coordinate in region to be carved in pattern matrix and the maximum of ordinate
Value, wherein
PiIt .x is the abscissa N with i-th point after mappingi.x corresponding abscissa；P00.x former for the coordinate of CNC model
The abscissa of point corresponding point in pattern matrix；NiIt .x is i-th point of abscissa；I is serial number a little；image_scale
For the scale bar of picture；PiIt .y is the ordinate N with i-th point after mappingi.x corresponding ordinate；P00It .y is CNC model
Coordinate origin corresponding point in pattern matrix ordinate；NiIt .y is i-th point of ordinate；N is region to be carved top
The quantity of point；
The minimum value and ordinate for judging the abscissa of respective coordinates of the apex coordinate in pattern matrix are most
Whether big value is in the range of pattern matrix；If it is not, determining to need to extend pattern matrix, and execute step 5)；If so, sentencing
Surely extension pattern matrix is not needed, step 4) is then executed.
Optionally, expansion module is used for:
Using formula, the columns of the pixel of extended matrix is updated
Its
In,
Mat_extend.cols is the columns of the pixel of extended matrix；NDst_rect_min_x is region to be carved
The abscissa minimum value of respective coordinates of the apex coordinate in pattern matrix；Mat_src.cols is the pixel point range of pattern matrix
Number；
The line number of the pixel of extended matrix is updated using following formula:
Wherein,
Mat_extend.rows is the line number of the pixel of extended matrix；NDst_rect_max_y is region to be carved
The ordinate maximum value of respective coordinates of the apex coordinate in pattern matrix；Mat_src.rows is the pixel row of pattern matrix
Number.
Optionally, described second module is obtained, is used for:
The noise in extended matrix is removed, and gray processing, binary conversion treatment are carried out to extended matrix, obtains two-value Gray Moment
Battle array；
Obtain the minimum circumscribed rectangle of the pixel corresponding with engraving content in the two-value gray matrix；
According to the height in the region wide, to be carved in region to be carved, minimum circumscribed rectangle is wide and the height of minimum circumscribed rectangle,
Using formula,Obtain area to be carved
The height of the wide wide ratio and region to be carved relative to the minimum circumscribed rectangle in domain is relative to the minimum circumscribed rectangle
High ratio, wherein
Width_scale is the wide wide ratio relative to minimum circumscribed rectangle in region to be carved； rRect_
Dst.size.width is the width in region to be carved；Min_distance minimum safe distance；Image_scale is the ratio of picture
Example ruler；RRect_before.size.width is the width of minimum circumscribed rectangle；Height_scale is the high phase in region to be carved
For the high ratio of minimum circumscribed rectangle；RRect_dst.size.height is the height in region to be carved； rRect_
Before.size.height is the height of minimum circumscribed rectangle；
The height of the wide wide ratio and region to be carved relative to the minimum circumscribed rectangle in region to be carved is opposite
Scaling of the smaller value as pattern matrix in the high ratio of the minimum circumscribed rectangle, and according to the scaling
And the size of the minimum circumscribed rectangle of pattern matrix, using formula,Obtain the central point of target rectangle
The width and height of coordinate and target rectangle, wherein
RRect_after.angle is the angle of target rectangle；RRect_dst.angle is the angle in region to be carved；
RRect_after.center is the center of target rectangle；RRect_dst.center is the center in region to be carved； rRect_
After.size.width is the width of target rectangle；RRect_before.size.width is the width of minimum circumscribed rectangle；
Shrink_scale is scaling；RR ec t_a f t.e r.s is the height of target rectangle； rRect_
Before.size.height is the height of minimum circumscribed rectangle；
According to the corresponding relationship between target rectangle and minimum circumscribed rectangle, obtain target rectangle and minimum circumscribed rectangle it
Between affine transformation matrix, and radiation transformation is carried out to minimum circumscribed rectangle according to the affine transformation matrix；
Path is carved according to the Coordinate generation of the pixel of the minimum circumscribed rectangle after affine transformation.
The present invention has the advantage that compared with prior art
Using the embodiment of the present invention, by the way that the coordinate in region to be carved and pattern to be carved are transformed into the same coordinate system
In, whether it is located in pattern matrix after mapping according to the apex coordinate in region to be carved, pattern matrix is extended, it will
Pattern to be carved extends to area size to be carved, and then the pixel in extended matrix is mapped in region to be carved, into
And the coordinate of the pixel after available mapping, it is finally raw according to the coordinate in region to be carved of the pixel after mapping
At engraving path, compared with the existing technology in manually generated engraving path, the embodiment of the present invention executed automatically by machine, improved
The formation efficiency in engraving path.
Detailed description of the invention
Fig. 1 is a kind of flow diagram of the automatic generation method in jade carving path provided in an embodiment of the present invention；
Fig. 2 is a kind of schematic illustration of the automatic generation method in jade carving path provided in an embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram of the automatically generating device in jade carving path provided in an embodiment of the present invention；
Fig. 4 is a kind of structural schematic diagram of the automatic creation system in jade carving path provided in an embodiment of the present invention.
Specific embodiment
It elaborates below to the embodiment of the present invention, the present embodiment carries out under the premise of the technical scheme of the present invention
Implement, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to following implementation
Example.
The embodiment of the invention provides the automatic generation methods and device in a kind of jade carving path, first below with regard to this hair
A kind of automatic generation method in jade carving path that bright embodiment provides is introduced.
Fig. 1 is a kind of flow diagram of the automatic generation method in jade carving path provided in an embodiment of the present invention；Fig. 2
For a kind of schematic illustration of the automatic generation method in jade carving path provided in an embodiment of the present invention；Such as Fig. 1 and Fig. 2 institute
Show, which comprises
S101: the apex coordinate in region to be carved on jade is obtained.
Specifically, being inputted in CNC (Computerized Numerical Control, computer numerical control) system first
Rectangular area to be carved, i.e., coordinate of the four of the target rectangle region vertex in CNC model, unit are millimeter, are denoted as respectively
N1、N2、N3And N4, the origin of CNC model coordinate systems only needs in the upper right side of target rectangle, without recording origin at this time
Specific coordinate.
S102: the picture containing engraving content is loaded into matrix, obtains pattern matrix.
In practical applications, text included in pattern to be carved, pattern etc. can be referred to as to engraving content, engraving
Content is generally black.In pattern to be carved, other than engraving content is black or approximate black, other regions are white
Or broken white, i.e. picture is " in black and white ".
Then, the picture containing engraving content is read into matrix using the cv::read () function in OpenCV, obtain
Pattern matrix, and pattern matrix is denoted as mat_src.
It is understood that is obtained is exactly a two-dimensional matrix, a width when using cv::read () to read picture
Image is also to be indicated in the form of two-dimensional matrix in a computer, the pixel (i, j) in image and the element in matrix
(i, j) is one-to-one.
S103: the coordinate in region to be carved and pattern to be carved are transformed into the same coordinate system, according to region to be carved
Apex coordinate by mapping after whether be located at pattern matrix in, judge whether to need to be extended pattern matrix；If so, holding
Row S104 step.
Illustratively, the apex coordinate in region to be carved can be mapped in pattern matrix, and obtains region to be carved
Respective coordinates of the apex coordinate in pattern matrix abscissa minimum value and ordinate maximum value.
By the apex coordinate N in region to be carved1、N2、N3And N4It is mapped in pattern matrix, using formula,The vertex in region to be carved is obtained in pattern matrix mat_src
Corresponding coordinate points, are denoted as P1、P2、P3And P4, and obtain corresponding points P of the apex coordinate in region to be carved in pattern matrix1、
P2、P3And P4Coordinate abscissa minimum value and ordinate maximum value, wherein
PiIt .x is the abscissa N with i-th point after mappingi.x corresponding abscissa；P00.x former for the coordinate of CNC model
The abscissa of point corresponding point in pattern matrix；NiIt .x is i-th point of abscissa；I is serial number a little；image_scale
For the scale bar of picture；PiIt .y is the ordinate N with i-th point after mappingi.x corresponding ordinate；P00It .y is CNC model
Coordinate origin corresponding point in pattern matrix ordinate；NiIt .y is i-th point of ordinate；N is region to be carved top
The quantity of point, and when region to be carved is rectangle, n=4；
In practical applications, the coordinate origin of calculating CNC model corresponding point in pattern matrix.Use P00Indicate CNC mould
The coordinate origin of type corresponding point in pattern matrix mat_src, by P00It is set as (mat_src.cols, 0).
Then, judge the minimum value and ordinate of the abscissa of respective coordinates of the apex coordinate in pattern matrix
Maximum value whether be in the range of pattern matrix；
Specifically, can be by P1、P2、P3And P4The minimum value of middle abscissa is labeled as nDst_rect_min_x；By P1、
P2、P3And P4The maximum value of middle ordinate is labeled as nDst_rect_max_y；By the maximum coordinates on the line direction of pattern matrix
Labeled as mat_src.rows；It, can be in nDst_rect_ when the origin of pattern matrix is located at the upper left side of pattern matrix
In the case where min_x > 0 and mat_src.rows > nDst_rect_max_y, top of the region to be carved after mapping is determined
Point is respectively positioned in the range of pattern matrix, then the judging result of S103 step is no, i.e. P1、P2、P3And P4All in pattern matrix
In, then it is judged to not needing extending pattern matrix, directly execution step S105；
If vertex of the region to be carved after mapping has exceeded the range of pattern matrix, i.e. P1、P2、P3And P4Not all exist
In pattern matrix, then the judging result of S103 step is yes, needs to extend pattern matrix, executes step S104.
It is understood that scale bar refer to pixel distance (unit: pixel) of two pixels in picture and this two
The ratio of the space length (unit: millimeter) of point is known as the scale bar of picture, may be generally referred to as resolution ratio, is denoted as image_
scale。
S104: the pixel in extended matrix is mapped in region to be carved, after obtaining mapping by extension pattern matrix
The coordinate of pixel carves path according to Coordinate generation of the pixel after mapping in region to be carved.
Extension gained matrix is denoted as mat_extend, the type of matrix mat_extend is with pattern matrix mat_src's
Type is consistent.
It can use the columns that following formula updates the pixel of extended matrix:
Its
In,
Mat_extend.cols is the columns of the pixel of extended matrix；NDst_rect_min_x is region to be carved
The abscissa minimum value of respective coordinates of the apex coordinate in pattern matrix；Mat_src.cols is the pixel point range of pattern matrix
Number；
The line number of the pixel of extended matrix is updated using following formula:
Wherein,
Mat_extend.rows is the line number of the pixel of extended matrix；NDst_rect_max_y is region to be carved
The ordinate maximum value of respective coordinates of the apex coordinate in pattern matrix；Mat_src.rows is the pixel row of pattern matrix
Number；
Then white (255,255,255) are set by the value of all pixels point in extended matrix mat_extend.Again will
Pattern matrix mat_src covers the most upper right corner rectangular area of extended matrix mat_extend, capped rectangular area
It is wide high high consistent with the width of mat_src.
Recycle formula, Pj.x=Pi.x-mat_src.cols+mat_extend.cols point P is updated respectively1、P2、P3With
P4Abscissa, wherein
PjIt .x is the abscissa on updated j-th of vertex, and j ∈ [Isosorbide-5-Nitrae]；PiIt .x is the cross on i-th of vertex before update
Coordinate, and i=j；Mat_src.cols is the columns of the pattern matrix before updating；Mat_extend.cols is extended matrix
Columns.
The value of matrix mat_src is copied in mat_extend, meanwhile, by point P00Coordinate be updated to (mat_
src.cols,0)。
Then using extended matrix as new pattern matrix, and engraving path is generated, process is as follows:
Illustratively, the noise in pattern matrix can be removed, and gray processing, binary conversion treatment are carried out to pattern matrix,
Obtain two-value gray matrix.
In practical applications, the noise in mean filter function cv::blur () removal matrix mat_src can be used.
Then, the minimum circumscribed rectangle of the pixel corresponding with engraving content in the two-value gray matrix is obtained；It will
Matrix ma_ts is converted to grayscale image, then using the function cv::adaptiveThreshold () of OpenCV to gained gray scale
Figure carries out the binary conversion treatment based on adaptive threshold, and gained matrix is denoted as:
mat_src_binary_gray。
All black pixel points for corresponding to engraving content in two-value gray matrix mat_src_binary_gray are imitated
It penetrates and transforms in pattern matrix corresponding in the matrix in region to be carved, construct a new two-value gray matrix, and by phase
It closes point and is set as black.
Two-value gray matrix mat_src_binary_gray is traversed, its all black pixel points is obtained, is denoted as
Pblacki, wherein [1, N] i ∈, N are black pixel point total number.
The minimum circumscribed rectangle that function cv::minAreaRect () obtains all black pixel points is reused, is denoted as
rRect_before.Reuse four vertex of function cv::RotatedRect::points () acquisition rRect_before
Coordinate is denoted as P respectivelyb1、Pb2、Pb3And Pb4, the sequence on this four vertex at this time are as follows: and bottomLeft, topLeft,
TopRight, bottomRight.
It in practical applications, can be according to P1、P2And P3, use cv::RotatedRect::RotatedRect () function
To obtain the corresponding rectangle rRect_dst in the region to be carved in matrix.
Then, according to the height in the region wide, to be carved in region to be carved, minimum circumscribed rectangle is wide and minimum circumscribed rectangle
Height, using formula,
Obtain area to be carved
The height of the wide wide ratio and region to be carved relative to the minimum circumscribed rectangle in domain is relative to the minimum circumscribed rectangle
High ratio, wherein
Width_scale is the wide wide ratio relative to minimum circumscribed rectangle in region to be carved； rRect_
Dst.size.width is the width in region to be carved；Min_distance is minimum safe distance, and unit is millimeter； image_
Scale is the scale bar of picture；It rRect_before.size. is the width of the small h boundary rectangle of wi most dt；Height_sca is le
The high high ratio relative to minimum circumscribed rectangle in region to be carved；RRect_dst.size.height is region to be carved
It is high；RRect_before.size.height is the height of minimum circumscribed rectangle；
Then, formula, shrink_scale=min (width_scale, height_scale), by area to be carved are utilized
The height of the wide wide ratio and region to be carved relative to the minimum circumscribed rectangle in domain is relative to the minimum circumscribed rectangle
High ratio in scaling of the smaller value as pattern matrix, wherein
Min () is minimum value value finding function.
Then, according to the scaling and the size of the minimum circumscribed rectangle of pattern matrix, using formula,Obtain the central point of target rectangle
The width and height of coordinate and target rectangle, wherein
RRect_after.angle is the angle of target rectangle；RRect_dst.angle is the angle in region to be carved；
RRect_after.center is the center of target rectangle；RRect_dst.center is the center in region to be carved； rRect_
After.size.width is the width of target rectangle；RRect_before.size.width is the width of minimum circumscribed rectangle；
Shrink_scale is scaling；RR ec t_a f t.e r.s is the height of target rectangle； rRect_
Before.size.height is the height of minimum circumscribed rectangle.
In practical applications, function cv::RotatedRect::points () can be used and obtain target rectangle rRect_
Four apex coordinates of after, are denoted as P respectivelya1、Pa2、Pa3And Pa4, the sequence on this four vertex is successively at this time are as follows:
BottomLeft, topLeft, topRight, bottomRight.
Then, it according to the corresponding relationship between target rectangle and minimum circumscribed rectangle, obtains target rectangle and minimum is external
Affine transformation matrix between rectangle, and affine transformation is carried out to minimum circumscribed rectangle according to the affine transformation matrix.
It in practical applications, can be according to Pb1、Pb2、Pb3、Pb4And Pa1、Pa2、Pa3、Pa4, use function cv::
GetAffineTransform () acquires the affine transformation matrix between the two rectangles, is denoted as M, M=(aij)2×3:
For resulting each black pixel pointUsing formula,
Calculating acquires its resulting point after affine transformationWherein,
I ∈ [1, N], N are black pixel point total number.
Matrix of the construction one as matrix mat_src_binary_gray size, type, is denoted as mat_binary_
Gray_shrinked, and white (value 255) is set by its all pixels point.Finally in matrix mat_binary_gray_
It will point P in shrinkedb'lackiIt is both configured to black (value 0).At this time in matrix mat_binary_gray_shrinked
Engraving content has been precisely located in target area.
Finally, according to the black picture element in the target rectangle in two-value gray matrix mat_binary_gray_shrinked
The Coordinate generation of point carves path.
Specifically, can be according to matrix mat_binary_gray_shrinked, point P00, photo resolution image_
Scale, depth and cutter lifting height are cut to generate the corresponding engraving path of engraving content.
In addition, the file header of NC file can be fixed up after engraving machine type determines, carve as used in the present invention
The NC file header of machine is as shown in table 1, and table 1 is the file header in the embodiment of the present invention.
Table 1
Table 2 is parameter name, meaning and the value that every row carves path in CNC file, as shown in table 2:
Table 2
Such as: N4075X-30Y-32.5Z-0.5.
From left to right, Ergodic Matrices mat_binary_gray_shrinked from top to bottom, if the point of current accessed is
Pi,j, wherein i ∈ [0, mat_binary_gray_shrinked.rows), j ∈ [0, mat_binary_gray_
shrinked.cols)。
Such as fruit dot Pi,jWhen for black, then formula is utilized,By Pi,jConversion
For the point in CNC model coordinate systems, it is denoted as NCi,j, wherein
NCi,jIt .x is point Pi,jIt is transformed into the abscissa of the point in CNC model coordinate systems；J is pixel Pi,jUnder the column at place
Mark；I is pixel Pi,jThe row subscript at place；P00.x for CNC model coordinate origin in pattern matrix mat_src corresponding points
Abscissa；NCi,jIt .y is point Pi,jIt is transformed into the ordinate of the point in CNC model coordinate system；P00It .y is the coordinate of CNC model
The ordinate of origin corresponding points in pattern matrix mat_src.
Regenerate corresponding engraving path and be inserted into NC file: the value of parameter N is specific line number, and the value of parameter X is
NCi,j.x, the value of parameter Y is NCi,j.y, the corresponding parameter Z of black pixel point is expressed as carving depth, and value can be set to-
0.5。
If next point Pi,j+1In the presence of and Pi,j+1For white, then cutter lifting path insertion NC file is regenerated: parameter N's
Value is specific line number, and the value of parameter X is NCi,j.x, the value of parameter Y is NCi,j.y, the table of the corresponding parameter Z of white pixel point
Show that cutter lifting height, value can be set to 1 millimeter.
After the completion of carving coordinates measurement, the corresponding end-of-file of engraving path NC file is generated.When engraving machine type determines
Afterwards, the end-of-file of NC file is also that can be fixed up.Table 3 is that the embodiment of the invention provides the NC end-of-file of engraving machine column
Table, as shown in table 3:
Table 3
Wherein, i is the line number where the pixel to be carved, and value is determined by carving path line number.
Finally, generating complete engraving path.To carve the file header of path NC file, the corresponding engraving path of content with
And end-of-file is successively stitched together, and just constitutes final complete engraving path.
By practical evaluation and test, engraving content can be carved in jade by the engraving path generated using present invention automation
Specified region in, engraving content it is full, content is clear, the average minimum range apart from boundary be 0.95 millimeter, carve content
Wide, high direction it is consistent with wide, the high direction of target area, engraving effect is fine.
S105: the corresponding pixel points in pattern matrix are mapped in region to be carved, the pixel after obtaining mapping
Coordinate carves path according to Coordinate generation of the pixel after mapping in region to be carved.
It is emphasized that the corresponding pixel points in pattern matrix, can be the pixel of the content in composition pattern matrix
Point, such as the obtained black pixel point after binaryzation.In addition, carrying out the mapping of pixel in this step and carving the life in path
Identical with S104 step at process, details are not described herein for the embodiment of the present invention.
It is same by the way that the coordinate in region to be carved to be transformed into pattern to be carved using embodiment illustrated in fig. 1 of the present invention
In coordinate system, whether it is located in pattern matrix after mapping according to the apex coordinate in region to be carved, pattern matrix is carried out
Extension, extends to area size to be carved for pattern to be carved, the pixel in extended matrix is then mapped to area to be carved
In domain, and then the coordinate of the pixel after available mapping, finally according to the pixel after mapping in region to be carved
Coordinate generation carve path, compared with the existing technology in manually generated engraving path, the embodiment of the present invention by machine it is automatic
It executes, improves the formation efficiency in engraving path.
In another specific embodiment of the embodiment of the present invention, before step S102, the method also includes:
Judge that can the apex coordinate in region to be carved form setting shape, if so, step S102 is executed, if it is not, returning
Execute step S101, wherein the shape that sets is rectangle.
Illustratively, when region to be carved is necessary for rectangle, four vertex for setting rectangle are respectively ABCD.
Then existAndAndWhen, determine region to be carved for rectangle.
If can make up rectangle, it is sequentially recorded four vertex in rank results；If all rank results are all
Can not organize it is rectangular, then error exit.
Using the above embodiment of the present invention, it is possible to determine that whether region to be carved is rectangular area, is avoided to non-rectangle area
It is carved in domain.
It is corresponding with embodiment illustrated in fig. 1 of the present invention, the embodiment of the invention also provides a kind of jade carving path from
Dynamic generating means.
Fig. 3 is a kind of structural schematic diagram of the automatically generating device in jade carving path provided in an embodiment of the present invention, such as
Shown in Fig. 3, described device includes:
First obtains module 301, for obtaining the apex coordinate in region to be carved on jade；
The picture containing engraving content is loaded into matrix, obtains pattern matrix；
First judgment module 302, for the coordinate in region to be carved and pattern to be carved to be transformed into the same coordinate system,
Whether be located in pattern matrix after mapping according to the apex coordinate in region to be carved, judge whether to need to pattern matrix into
Row extension；
Expansion module 303, for extending pattern matrix in the case where the judging result of first judgment module 302, which is, is；
Second obtains module 304, and for the corresponding pixel points in pattern matrix to be mapped in region to be carved, acquisition is reflected
The coordinate of pixel after penetrating carves path according to Coordinate generation of the pixel after mapping in region to be carved.
It is same by the way that the coordinate in region to be carved to be transformed into pattern to be carved using embodiment illustrated in fig. 3 of the present invention
In coordinate system, whether it is located in pattern matrix after mapping according to the apex coordinate in region to be carved, pattern matrix is carried out
Extension, extends to area size to be carved for pattern to be carved, the pixel in extended matrix is then mapped to area to be carved
In domain, and then the coordinate of the pixel after available mapping, finally according to the pixel after mapping in region to be carved
Coordinate generation carve path, compared with the existing technology in manually generated engraving path, the embodiment of the present invention by machine it is automatic
It executes, improves the formation efficiency in engraving path.
In a kind of specific embodiment of the embodiment of the present invention, described first obtains module 301, is used for:
Judge that can the apex coordinate in region to be carved form setting shape, if so, obtaining region to be carved on jade
Apex coordinate, if it is not, load containing engraving content picture into matrix, obtain pattern matrix, wherein it is described set shape as
Rectangle.
In a kind of specific embodiment of the embodiment of the present invention, the first judgment module 302 is used for:
The apex coordinate in region to be carved is mapped in pattern matrix, using formula,
The vertex in region to be carved is obtained in pattern matrix
Coordinate, and obtain respective coordinates of the apex coordinate in region to be carved in pattern matrix, wherein
PiIt .x is the abscissa N with i-th point after mappingi.x corresponding abscissa；P00.x former for the coordinate of CNC model
The abscissa of point corresponding point in pattern matrix；NiIt .x is i-th point of abscissa；I is serial number a little；image_scale
For the scale bar of picture；PiIt .y is the ordinate N with i-th point after mappingi.x corresponding ordinate；P00It .y is CNC model
Coordinate origin corresponding point in pattern matrix ordinate；NiIt .y is i-th point of ordinate；N is region to be carved top
The quantity of point；
The minimum value and ordinate for judging the abscissa of respective coordinates of the apex coordinate in pattern matrix are most
Whether big value is in the range of pattern matrix；If it is not, determining to need to extend pattern matrix, and trigger expansion module 303；If
It is that judgement does not need extension pattern matrix, then triggers second and obtain module 304. in a kind of specific reality of the embodiment of the present invention
It applies in mode, expansion module 303 is used for:
Using formula, the columns of the pixel of extended matrix is updated
Its
In,
Mat_extend.cols is the columns of the pixel of extended matrix；NDst_rect_min_x is region to be carved
The abscissa minimum value of respective coordinates of the apex coordinate in pattern matrix；Mat_src.cols is the pixel point range of pattern matrix
Number；
The line number of the pixel of extended matrix is updated using following formula:
Wherein,
Mat_extend.rows is the line number of the pixel of extended matrix；NDst_rect_max_y is region to be carved
The ordinate maximum value of respective coordinates of the apex coordinate in pattern matrix；Mat_src.rows is the pixel row of pattern matrix
Number.
In a kind of specific embodiment of the embodiment of the present invention, described second obtains module 304, is used for:
The noise in extended matrix is removed, and gray processing, binary conversion treatment are carried out to extended matrix, obtains two-value Gray Moment
Battle array；
Obtain the minimum circumscribed rectangle of the pixel corresponding with engraving content in the two-value gray matrix；
According to the height in the region wide, to be carved in region to be carved, minimum circumscribed rectangle is wide and the height of minimum circumscribed rectangle,
Using formula,Obtain area to be carved
The height of the wide wide ratio and region to be carved relative to the minimum circumscribed rectangle in domain is relative to the minimum circumscribed rectangle
High ratio, wherein
Width_scale is the wide wide ratio relative to minimum circumscribed rectangle in region to be carved； rRect_
Dst.size.width is the width in region to be carved；Min_distance is minimum safe distance；Image_scale is image
Scale bar；RRect_before.size.width is the width of minimum circumscribed rectangle；Height_scale is the height in region to be carved
High ratio relative to minimum circumscribed rectangle；RRect_dst.size.height is the height in region to be carved； rRect_
Before.size.height is the height of minimum circumscribed rectangle；
The height of the wide wide ratio and region to be carved relative to the minimum circumscribed rectangle in region to be carved is opposite
Scaling of the smaller value as pattern matrix in the high ratio of the minimum circumscribed rectangle, and according to the scaling
And the size of the minimum circumscribed rectangle of pattern matrix, using formula,Obtain the central point of target rectangle
The width and height of coordinate and target rectangle, wherein
RRect_after.angle is the angle of target rectangle；RRect_dst.angle is the angle in region to be carved；
RRect_after.center is the center of target rectangle；RRect_dst.center is the center in region to be carved； rRect_
After.size.width is the width of target rectangle；RRect_before.size.width is the width of minimum circumscribed rectangle；
Shrink_scale is scaling；RR ec t_a f t.e r.s is the height of target rectangle； rRect_
Before.size.height is the height of minimum circumscribed rectangle；
According to the corresponding relationship between target rectangle and minimum circumscribed rectangle, obtain target rectangle and minimum circumscribed rectangle it
Between affine transformation matrix, and radiation transformation is carried out to minimum circumscribed rectangle according to the affine transformation matrix；
Path is carved according to the Coordinate generation of the pixel of the minimum circumscribed rectangle after affine transformation.
Corresponding to embodiment illustrated in fig. 1 of the present invention, the embodiment of the invention also provides a kind of the automatic of jade carving path
Generation system.
Fig. 4 is a kind of structural schematic diagram of the automatic creation system in jade carving path provided in an embodiment of the present invention,
As shown in figure 4, system include: parameter verification module, image processing module, CNC model coordinate point and matrix model coordinate points it
Between conversion module, picture affine transformation processing module and automation generate engraving path module, wherein
Parameter verification module, for arranging four incoming vertex, can every kind of rank results of verification constitute square
Shape.
Image processing module, for being filtered using cv::blur () function to image；Use cv::
CvtColor () function converts the image into grayscale image；Base is carried out to image using cv::adaptiveThreshold () function
In the binary conversion treatment of adaptive threshold；The external square of minimum of engraving content is obtained using cv::minAreaRect () function
Shape and other image processing functions.
Conversion module between CNC model coordinate point and matrix model coordinate points, for realizing CNC model coordinate point and square
Mutually converting between battle array model coordinate point.
Picture affine transformation processing module, for using function cv::getAffineTransform (), according at least 3 groups
The vertex of correspondence is converted to obtain affine transformation matrix M；According to affine transformation matrix M, target point P is acquired by affine change
Change rear resulting point P'.
Automation generates engraving path module: generating the corresponding file header in engraving path and end-of-file；It is carved according to containing
Two-value gray matrix, the point P of content00, photo resolution image_scale, cut depth and cutter lifting height to generate in engraving
Hold corresponding engraving path.Finally file header, the corresponding engraving path of engraving content and end-of-file are stitched together, collectively constituted
One complete engraving path file, i.e. CNC file.
In practical applications, embodiment illustrated in fig. 4 of the present invention be preferably applied to according to only containing engraving content " blank sheet of paper is black
Word " picture will carve the region to be carved of content being carved on jade.
It is emphasized that referring in black and white, in the pattern to be carved containing engraving content, other than carving content
Pixel region be white, engraving content be black picture element.
The method that the automation based on adaptive threshold that the purpose of the present invention is to provide a kind of generates engraving path, so that
Engraving path (CNC file) can be automatically generated according only to " in black and white " picture, and engraving content is carved in specified area
Domain guarantees that engraving effect is good.
And whole process is not necessarily to the participation of designer, significantly reduces the workload of designer, improves processing efficiency.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of automatic generation method in jade carving path, which is characterized in that the described method includes:
1) apex coordinate in region to be carved on jade, is obtained；
2) picture containing engraving content, is loaded into matrix, obtains pattern matrix；
3), the coordinate in region to be carved and pattern to be carved are transformed into the same coordinate system, according to the vertex in region to be carved
Whether coordinate is located in pattern matrix after mapping, judges whether to need to be extended pattern matrix；
4), if so, extension pattern matrix, the pixel in extended matrix is mapped in region to be carved, after obtaining mapping
The coordinate of pixel carves path according to Coordinate generation of the pixel after mapping in region to be carved；
5), the corresponding pixel points in pattern matrix are mapped in region to be carved, the coordinate of the pixel after obtaining mapping, root
Path is carved according to Coordinate generation of the pixel after mapping in region to be carved.
2. a kind of automatic generation method in jade carving path according to claim 1, which is characterized in that step 2) it
Before, the method also includes:
Judge that can the apex coordinate in region to be carved form setting shape, if so, executing step 2), executes step if it is not, returning
It is rapid 1), wherein the shape that sets is rectangle.
3. a kind of automatic generation method in jade carving path according to claim 1, which is characterized in that the step
3), comprising:
The apex coordinate in region to be carved is mapped in pattern matrix, using formula,
Obtain seat of the vertex in region to be carved in pattern matrix
Mark, and obtain respective coordinates of the apex coordinate in region to be carved in pattern matrix, wherein
PiIt .x is the abscissa N with i-th point after mappingi.x corresponding abscissa；P00.x exist for the coordinate origin of CNC model
The abscissa of corresponding point in pattern matrix；NiIt .x is i-th point of abscissa；I is serial number a little；Image_scale is figure
The scale bar of piece；PiIt .y is the ordinate N with i-th point after mappingi.x corresponding ordinate；P00It .y is the seat of CNC model
Mark the ordinate of origin corresponding point in pattern matrix；NiIt .y is i-th point of ordinate；N is region vertex to be carved
Quantity；
Judge the minimum value of the abscissa of respective coordinates of the apex coordinate in pattern matrix and the maximum value of ordinate
Whether it is in the range of pattern matrix；If it is not, determining to need to extend pattern matrix, and execute step 5)；If so, determining not
It needs to extend pattern matrix, then executes step 4).
4. a kind of automatic generation method in jade carving path according to claim 1, which is characterized in that in extension pattern
During matrix, the columns of the pixel of extended matrix is updated using following formula:
Wherein,
Mat_extend.cols is the columns of the pixel of extended matrix；NDst_rect_min_x is the vertex in region to be carved
The abscissa minimum value of respective coordinates of the coordinate in pattern matrix；Mat_src.cols is the pixel columns of pattern matrix；
The line number of the pixel of extended matrix is updated using following formula:
Wherein,
Mat_extend.rows is the line number of the pixel of extended matrix；NDst_rect_max_y is the vertex in region to be carved
The ordinate maximum value of respective coordinates of the coordinate in pattern matrix；Mat_src.rows is the pixel line number of pattern matrix.
5. a kind of automatic generation method in jade carving path according to claim 1, which is characterized in that the step
5), comprising:
The noise in extended matrix is removed, and gray processing, binary conversion treatment are carried out to extended matrix, obtains two-value gray matrix；
Obtain the minimum circumscribed rectangle of the pixel corresponding with engraving content in the two-value gray matrix；
According to the height in the region wide, to be carved in region to be carved, minimum circumscribed rectangle is wide and the height of minimum circumscribed rectangle, utilizes
Formula,Obtain region to be carved
High height relative to the minimum circumscribed rectangle of the width relative to the wide ratio and region to be carved of the minimum circumscribed rectangle
Ratio, wherein
Width_scale is the wide wide ratio relative to minimum circumscribed rectangle in region to be carved；rRect_
Dst.size.width is the width in region to be carved；Min_distance is minimum safe distance；Image_scale is picture
Scale bar；RRect_before.size.width is the width of minimum circumscribed rectangle；Height_scale is the height in region to be carved
High ratio relative to minimum circumscribed rectangle；RRect_dst.size.height is the height in region to be carved；rRect_
Before.size.height is the height of minimum circumscribed rectangle；
By the height of the wide wide ratio and region to be carved relative to the minimum circumscribed rectangle in region to be carved relative to institute
State scaling of the smaller value in the high ratio of minimum circumscribed rectangle as pattern matrix, and according to the scaling and
The size of the minimum circumscribed rectangle of pattern matrix, using formula,Obtain the central point of target rectangle
The width and height of coordinate and target rectangle, wherein
RRect_after.angle is the angle of target rectangle；RRect_dst.angle is the angle in region to be carved；
RRect_after.center is the center of target rectangle；RRect_dst.center is the center in region to be carved；rRect_
After.size.width is the width of target rectangle；RRect_before.size.width is the width of minimum circumscribed rectangle；
Shrink_scale is scaling；For the height of target rectangle；rRect_
Before.size.height is the height of minimum circumscribed rectangle；
According to the corresponding relationship between target rectangle and minimum circumscribed rectangle, obtain between target rectangle and minimum circumscribed rectangle
Affine transformation matrix, and radiation transformation is carried out to minimum circumscribed rectangle according to the affine transformation matrix；
Path is carved according to the Coordinate generation of the pixel of the minimum circumscribed rectangle after affine transformation.
6. a kind of automatically generating device in jade carving path, which is characterized in that described device includes:
First obtains module, for obtaining the apex coordinate in region to be carved on jade；
The picture containing engraving content is loaded into matrix, obtains pattern matrix；
First judgment module, for the coordinate in region to be carved and pattern to be carved to be transformed into the same coordinate system, according to
Whether the apex coordinate of carving area is located in pattern matrix after mapping, judges whether to need to expand pattern matrix
Exhibition；
Expansion module, for extending pattern matrix in the case where the judging result of first judgment module, which is, is；
Second obtains module, for the corresponding pixel points in pattern matrix to be mapped in region to be carved, after obtaining mapping
The coordinate of pixel carves path according to Coordinate generation of the pixel after mapping in region to be carved.
7. a kind of automatically generating device in jade carving path according to claim 6, which is characterized in that described first obtains
Modulus block, is used for:
Judge that can the apex coordinate in region to be carved form setting shape, if so, obtaining the vertex in region to be carved on jade
Coordinate obtains pattern matrix, wherein the shape that sets is square if it is not, loading the picture containing engraving content into matrix
Shape.
8. a kind of automatically generating device in jade carving path according to claim 6, which is characterized in that described first sentences
Disconnected module, is used for:
The apex coordinate in region to be carved is mapped in pattern matrix, using formula,Coordinate of the vertex in region to be carved in pattern matrix is obtained, and
Obtain the abscissa minimum value of respective coordinates of the apex coordinate in region to be carved in pattern matrix and the maximum of ordinate
Value, wherein
PiIt .x is the abscissa N with i-th point after mappingi.x corresponding abscissa；P00.x exist for the coordinate origin of CNC model
The abscissa of corresponding point in pattern matrix；NiIt .x is i-th point of abscissa；I is serial number a little；Image_scale is figure
The scale bar of piece；PiIt .y is the ordinate N with i-th point after mappingi.x corresponding ordinate；P00It .y is the seat of CNC model
Mark the ordinate of origin corresponding point in pattern matrix；NiIt .y is i-th point of ordinate；N is region vertex to be carved
Quantity；
Judge the minimum value of the abscissa of respective coordinates of the apex coordinate in pattern matrix and the maximum value of ordinate
Whether it is in the range of pattern matrix；If it is not, determining to need to extend pattern matrix, and execute step 5)；If so, determining not
It needs to extend pattern matrix, then executes step 4).
9. a kind of automatically generating device in jade carving path according to claim 6, which is characterized in that expansion module,
For:
Using formula, the columns of the pixel of extended matrix is updated
Wherein,
Mat_extend.cols is the columns of the pixel of extended matrix；NDst_rect_min_x is the vertex in region to be carved
The abscissa minimum value of respective coordinates of the coordinate in pattern matrix；Mat_src.cols is the pixel columns of pattern matrix；
The line number of the pixel of extended matrix is updated using following formula:
Wherein,
Mat_extend.rows is the line number of the pixel of extended matrix；NDst_rect_max_y is the vertex in region to be carved
The ordinate maximum value of respective coordinates of the coordinate in pattern matrix；Mat_src.rows is the pixel line number of pattern matrix.
10. a kind of automatically generating device in jade carving path according to claim 6, which is characterized in that described second
Module is obtained, is used for:
The noise in extended matrix is removed, and gray processing, binary conversion treatment are carried out to extended matrix, obtains two-value gray matrix；
Obtain the minimum circumscribed rectangle of the pixel corresponding with engraving content in the two-value gray matrix；
According to the height in the region wide, to be carved in region to be carved, minimum circumscribed rectangle is wide and the height of minimum circumscribed rectangle, utilizes
Formula,Obtain region to be carved
High height relative to the minimum circumscribed rectangle of the width relative to the wide ratio and region to be carved of the minimum circumscribed rectangle
Ratio, wherein
Width_scale is the wide wide ratio relative to minimum circumscribed rectangle in region to be carved；rRect_
Dst.size.width is the width in region to be carved；Min_distance is minimum safe distance；Image_scale is picture
Scale bar；RRect_before.size.width is the width of minimum circumscribed rectangle；Height_scale is the height in region to be carved
High ratio relative to minimum circumscribed rectangle；RRect_dst.size.height is the height in region to be carved；rRect_
Before.size.height is the height of minimum circumscribed rectangle；
By the height of the wide wide ratio and region to be carved relative to the minimum circumscribed rectangle in region to be carved relative to institute
State scaling of the smaller value in the high ratio of minimum circumscribed rectangle as pattern matrix, and according to the scaling and
The size of the minimum circumscribed rectangle of pattern matrix, using formula,Obtain the central point of target rectangle
The width and height of coordinate and target rectangle, wherein
RRect_after.angle is the angle of target rectangle；RRect_dst.angle is the angle in region to be carved；
RRect_after.center is the center of target rectangle；RRect_dst.center is the center in region to be carved；rRect_
After.size.width is the width of target rectangle；RRect_before.size.width is the width of minimum circumscribed rectangle；
Shrink_scale is scaling；For the height of target rectangle；rRect_
Before.size.height is the height of minimum circumscribed rectangle；
According to the corresponding relationship between target rectangle and minimum circumscribed rectangle, obtain between target rectangle and minimum circumscribed rectangle
Affine transformation matrix, and radiation transformation is carried out to minimum circumscribed rectangle according to the affine transformation matrix；
Path is carved according to the Coordinate generation of the pixel of the minimum circumscribed rectangle after affine transformation.
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