JPS62109594A - Automatic formation of embroidering data of combined pattern - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for automatically creating stitch control data for embroidery based on an original image.

(Prior art and its problems) When forming characters by embroidery, the zigzag direction is important. Particularly when handwritten characters have 19 strokes and they touch or intersect with each other, the order in which the strokes are formed is important.

However, no method has been found for automatically creating data that satisfies each of the above conditions based on the original drawings of the thousands of ancient characters.

(Means for Solving the Problems and Their Effects) The present invention provides that the original image for creating embroidery data is composed of a combination of original images of each unit pattern of summer number, and each unit original image has an outline. Then, for each unit original image, a mark is attached to specify the amplitude direction of the zigzag to form the unit pattern by sewing, and for each unit original image, the contour line and zigzag are determined using optical means etc. The coordinates of each stitch are set by reading the amplitude direction and calculating the trajectory of the center of each zigzag amplitude and the zigzag amplitude accompanying the progression of the trajectory corresponding to the progression of the stitch. , out of each end of the boundary line where each unit original picture joins to each other, one end corresponding to the start point or end point of any stitch of each unit original picture is connected to a specific contact point, and each unit at that specific contact point Comparing the curvature radii of the original images with each other, sewing is performed on the unit original image that has a smaller radius, that is, the one whose contour line is bent by the relatively smooth contour line of the other side, and is set so as to end at the specific contact point. Then, for the unit original image with the larger radius of curvature, it is made to proceed by knob-zab stitching, starting from the specific contact point as the starting point and interposing the boundary line, so that when automatically reading from the original image, the zigzag The amplitude direction of the unit pattern is specified by the original image, and at the point where the unit patterns join each other, whether the unit pattern becomes the surface or hides is automatically selected based on a predetermined pattern conflict. .

(Example) Hereinafter, an example of the present invention will be described based on the drawings. Second
The figure shows the original drawing of the Roman letter "A", and each unit original drawing (B IXB 28B 3) is composed of each contour line (eυ (e2
1) Each zigzag direction line (a,) (B
2) (B3) is defined by a straight line thicker than the contour line (eυ(e2Xe,). Each unit original image (B , XB 2X
B, , ) are read by an optical reading device or the like, and by following this, the combinations of these unit original images 7 - -, -;, i? In order to create the seam formation data of
Regarding the contour lines parallel to a, ) (a2Xa,), the respective needle drop points are made to correspond to the L thread shown in Table 7-1.

The stitching of each unit pattern is done by data processing or
'l)) For convenience, the embroidery thread is attached to each zigzag direction line Ca.
, Xa, Xa3), and each ! For Th original image (B, XB 2XB *), from each starting point CS++゛, S+1) (S3+), each ending point (S
3. ) The embroidery stitch of each unit pattern is completed by the collection of the L L +b threads from IC to IC, and the direction of progress of the zigzag stitch is determined by each starting point (s l, ).
(S 2.) From (S 31) to each end point (s, 2Xs
, XS 32) and the opposite direction can be selected and set as appropriate.

Each needle drop point corresponds to the progression of ltI+ of zigzag stitching, for example, for the unit original image (B1), each straight line parallel to the marker (al) and the contour line (e,) intersect once. The locus (C1) of the center between each pair of intersection points and the zigzag width as the locus progresses are set by calculations by a microcomputer. Similarly, the center trajectory (C2) (C3) and each zigzag width are set for the 6-unit original image (B,) (B3).

The distances between each unit original picture (B, XB 2XB 3) are between points (S,,) and (dl), and between points (B3.) and (d
2) and between points (S32) and (d3), and the zigzag direction lines (a, There is.

Among each end of each of these boundary lines, each starting point (S,,)(
S2. XS 3. ) or each end point (s ,,XS 2
2X3.2) (S,,Xs,,Xs3
□) should be set as a specific contact point for the calculation described later.

In order to set the order of these mutual embroidery stitches corresponding to each unit original picture (B, XB2XB3), the specific contact point,
For example, at the point (S,,), the radius of curvature formed by the outline (el) of the unit original image (B,) and the unit original image (B2
) is compared with the radius of curvature formed by the contour line (e,), and the unit original image (B3) on the side where the radius of curvature is smaller is compared.
The order of forming the embroidery for U' is started by starting from at least the point (S3.) of the unit original picture (B,) on the larger side, and from the point C83,) to the point (
Embroidery stitching is performed with a boundary line intervening up to (d).

Below, using the flowcharts in Figure 1 (A) and Figure 1 (B),
The above control will be explained step by step with reference to FIG.

Each block in Figure 2 (B, XB tXB 3)
For the contour line (el) (e, ) (e3), each room (vote) of the contour point sequence is read by optical means, and as a result, each block name (BnX, where n is the block number) that formed each closed loop. and their type, for example, whether they are connected to each other or isolated, etc. are read.Then, from each zigzag direction line (al) (a,) (B3), the weitei line, in this case the horizontal direction in Fig. 2, is read. Zigzag slope angle to line (on)
is read. Furthermore, the start point (Sn+) and end point (Snt), which are the start or end points when each block (Bn) is zigzag stitched along each zigzag direction line (a, Xa2Xa-), are read, and each block (Bn ) are in contact with each other at each end point (dkX, where k is the number of the end point, and in Fig.
nt ) is read. Then, each zigzag width (W) (corresponding to the length of each zigzag direction line (a, Xa2) (B3) in FIG. 2) and the locus (C) of its center are calculated. Next, the common point between the point (dk) and the point (S) is defined as a specific contact point (TnNX, where N is a contact number) for each transitional block (Bn).

Each specific contact (T, IXT21XT, 2) ('rff+X
For each of the opposing blocks (B
The radius of curvature formed by the contour line (en) of n) is calculated. The transition from a block with a small radius of curvature to a dog block is allowed (F), but the transition from a large radius to a small radius is not allowed (G).
It is said that The results are shown in Table 1. In Table 1, for convenience, the intervening contact (T) number is listed in the column corresponding to OK (F). Next, the sewing block (
An arbitrary block (Bn) is stored δ at the first address (Aε) in the order register A for determining the transfer order between Bn), and then the next address (Aε) is stored.
blocks (Bn) that are in contact with the block (Bn) previously stored in the previous stage are stored, and by repeating this process, all blocks (Bn) are stored. In this way, a sequence listing of all possible combinations is created. In this case, although not shown in the flowchart, in each combination destination, the block (Bn
) is prohibited from repeating in each progression of n. Among the arrays, one array with an appropriate sewing order and a smaller number of transitions between blocks (Bn) is selected, and each Bn is registered in the order of addresses A1 to Δ[, and Table 2 is created. Ru.

Next, for each Bn in Table 2, an occurrence ranking table of specific contact points (TnN) shared by the Bn of the pond that sequentially interposes from one S to the other S in Fig. 2 is created. , the results are shown in Table 3. The specific contact point (T32) in Table 3 is deleted as it is not used for transition between Aε in Table 2, and the occurrence ranking table becomes as shown in Table 4. And T for each Bn in Table 4
The ranking of nH is determined by A, ~AE of Bn at the transfer destination in Table 2.
Rewrite it according to the order of. That is, each (TnN) in Table 1
For block (B1), refer to the specific contact (T
,,) is the 6th point for transitioning to the block (B,), and the specific contact (Tl) is the 6th point for transitioning to the block (B3), and in Table 2, the block (B,) is the 6th point for transitioning to the block (B,). ), the specific contact point (T
, ) and (T, 2), their subscripts are interchanged. At the same time, the symbols (T, , XT12) in FIG. 2 are rewritten or left as they are for convenience of explanation. Also, block (
B, XB 3), specific contacts (T2.) (T3
1) has one each and its N is 1, so there is no rewriting. The result of the rewriting is as shown in Table 5. Next, A in Table 2,
Since the block (B3) registered in is the first block to be formed, in order to set its starting point, the specific contact point (T+,) of block (B3) in Table 5 is rewritten as contact point (T3t). specified contact point (T3.) in the blank field.
is written and becomes as shown in Table 6. In addition, specific contacts ('r
s,) is a convenient name and code on the program, and although it is a starting point, it may not be a contact point. Next, enter the address before and after each Bn according to the rank of the circle in Table 2 (respectively A'E, A″&) for each Bn.
Allocate Tns according to the rank of N in Table 7, B
An n-TnN sequence ranking table is created.

Next, the sewing execution order including within each block (Bn) and between blocks (Bn) is set to 1, and a specific contact point ( TnN) is T31 with reference to Table 7. Table 6
T3. S and T3t adjacent to
The presence or absence of is checked. Since the adjacent S is S32, from the point (T, 1) in the block (B3) to the point (S3
The period up to 2) is designated as straight stitching, and this is registered in the memory location L=1. Note that since the point (T, l) (point (T32) in FIG. 2) and point (S34) are the same point, no sewing is performed between them. Next, there is a zigzag (Z) between point (S32) and point (T3.) in block (B3).
Z) sewing is specified and registered as L=2. This specified sewing is also not executed. Next, since there is a point ('rst) and no point ('r 33), we move from the point (Tel) in the block (B,) to the point (T 32
．． )) is designated as zigzag stitch and registered in L-3.

Next, a straight line is specified between point (T32) (point (T, , ) in Fig. 2) and point (S, +,) in block (B3), and a zigzag line is specified for the reverse direction, so that L=4 and L= 5
are registered respectively. These designated stitches are not executed in the same manner as described above. Next, point (T3
I) (T3t) is called point (S). This point (S)
is not used in the embodiment shown in Fig. 2, but when sewing one block in two steps, it is used to clearly identify the part that has already been sewn in the second time. be.

Similarly, the next block (for Bυ,
From point (T, lX point (T, , ) in Figure 2) to point (S
, 2) The interval is specified as straight and the reverse is specified as zigzag, and L
=6 and L=7, respectively. Next block (
The area between the point (Tll) of B, ) (the point ('r, +) in the T12X γ diagram) is designated in a zigzag manner and registered in L-8. Next, the direction from point (T+t) to point (S,,) is specified as straight line, and the reverse direction is specified as zigzag, and L-9, L=
10 respectively. These designated stitches are not executed in the same manner as described above. The point ('rz), the point (T,,) is the point (S
).

For the next block (B,), the distance from point (T2.) to point (S21) is specified to be straight, reverse, or zigzag, and L=I1. Register each in L=12. This designated plowing is not executed in the same way as above.

Next, since the point (T22) does not exist, the area between the point (T?,) and the point (S22) in the block (B2) is specified in a zigzag manner and registered as L=+3.

Thereafter, sewing data according to each specification of L=1 to L=13 is created and registered, and the process ends. When creating this sewing data, the above-mentioned read or calculated contour line (e
, Xe, Xe, ) and the zigzag inclination angle (o
n), the zigzag width (W), the locus of its center (C), each point (Sn+X5ntXTnN), etc., are referred to and calculated separately.

In the example, the zigzag inclination angle (On) was also constant for the block (Bn), but in response to curved contours, etc., it was adjusted to the progress of the center trajectory (C) as appropriate and according to predetermined regulations. It is also possible to make a specification that changes.

(Effects of the Invention) As described above, according to the present invention, the structure of the original image is simple, its reading and data processing are automated, and the stitch forming order between blocks and between stitches is properly set. Good embroidery data can be quickly created.

[Brief explanation of drawings]

FIG. 1 is a control flowchart showing an embodiment of the present invention, and FIG. 2 is an example of an original image. In the figure, (a,) (a2Xa3) are markers, (Bn) is a unit original (Sn, XS nt) are the start and end points of the zigzag stitch, respectively, and (Tr+N) is a specific contact point.

Claims (1)

[Claims] When creating embroidery data for a sewing machine that allows the fabric and needle to move relative to each other to form stitch patterns, the zigzag direction lines of multiple unit patterns are discontinuous at the joints between the unit patterns. When forming a combined embroidery pattern that is joined by arranging a unit original image for the unit pattern in the shape of the combined embroidery pattern and following the original image, stitches of the combined embroidery pattern are formed. The original image for creating data is provided with a contour line for embroidery sewing and a marker indicating a zigzag direction line in an area surrounded by the contour line, and the contour line and the zigzag direction line are provided. is read, and the locus of the center of each zigzag width and the zigzag width as the locus progresses corresponding to the progression of the stitches are calculated to set each stitch coordinate, and the intersection with the zigzag direction line in the unit original image is calculated. In addition, each end of the direction is the starting point and ending point of the zigzag line, and the point where the unit original drawings are connected to each other by a boundary line is one end on the boundary line and is a common point with the starting point or ending point. is set as a specific contact point, and the curvature radius of the outline of each unit original image at the specific contact point is compared with each other, and the embroidery formation order of the unit original image on the side where the curvature radius is smaller is determined from the side where the curvature radius is larger. At least the specific contact point in the unit original picture is given priority over the part of the unit original picture with the boundary line intervening, with at least the specific contact point as the starting point of sewing, and the formation of the prioritized unit pattern is made to end at the specific contact point. A method for automatically creating embroidery data with distinctive combination patterns.