JPH06154445A - Sewing data preparing device for sewing machine - Google Patents

Abstract

PURPOSE:To satisfactorily finish a pattern or the like having the varied direction by forming needle location points so that segments having end points alternated with equal pitch position provide a sewing line while tracing the profile of a watched picture image among original picture images from a picture image inputting device in the clockwise and counterclockwise direction. CONSTITUTION:Original picture images are taken in from a picture image inputting device 12, subjected to the binary data quantization and housed in an original picture image memory 16 as picture image data. Next, one lump of serial picture images is taken out of the original picture image data and housed in a watched picture image memory 18 and then the profile line of one housed watched picture image is extract. Next, the profile of the watched picture image is scanned from the left upper side for example and the starting point is searched and registered. A certain number of picture elements are traced clockwise along the profile line to register the points. The movement of registering the coordinate of every a certain number of points as input points is carried out until the trace in the clockwise direction coincide with the trace in the counterclockwise direction so that after the completion of the trace the stitch data having stitches obtained by dividing the segment interconnecting the registering points are formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewing data creating device for a sewing machine mounted on an embroidery sewing machine or the like, and in particular, the direction in which a figure is sewn is input one by one from a keyboard or the like and uniquely determined in the lateral direction. The present invention relates to a sewing data creating device for a sewing machine, which can satisfactorily finish a pattern or the like whose direction changes without sewing.

[0002]

2. Description of the Related Art As a known example of an electronic sewing machine to which a sewing data creating device of a sewing machine is attached, there is, for example, the invention of an electronic embroidery sewing machine disclosed in JP-A-58-198181. According to the present invention, a sewing machine that moves a needle up and down to form a stitch on a sewn cloth, a holding frame that holds the sewn cloth, a driving means, a first storing means, a pattern selecting means, and an enlarging means, An embroidery pattern is formed on the sewn cloth by providing a computing means, a second storage means, and a central processing unit, and moving the sewn cloth based on prestored embroidery pattern data. The same applicant as the applicant of the present application has applied for a patent.

On the other hand, a sewing data creating apparatus for a sewing machine has conventionally used a line segment in which 1 pixels of a captured image are connected in a horizontal direction as a sewing line, and a direction in which a figure is sewn is designated by a keyboard or the like. Was becoming.

As described above, since the direction in which the figure is sewn is input one by one from the keyboard or the like is uniquely determined in the lateral direction and the stitch is sewn, there is a problem that the finish such as a pattern in which the direction changes is poor. It was

In particular, when the figure is a circle, a sewing line is formed regardless of the direction of the contour line of the figure, so that there is a problem that the appearance is spoiled.

[0006]

SUMMARY OF THE INVENTION In view of the above situation, the present invention has been made in order to solve the above-mentioned problems of the conventional example, and the direction in which a figure is sewn is changed step by step from a keyboard or the like. An object of the present invention is to provide a sewing data creating device for a sewing machine, which can satisfactorily finish a pattern whose direction changes without inputting or uniquely determining in the lateral direction and sewing.

[0007]

The present invention provides a sewing data creating device for a sewing machine mounted on an embroidery sewing machine,
First means for inputting the original image of the pattern read by the image input device as a video signal and binarizing it, second means for dividing the image obtained from the first means, and extracting contour lines of the image. The third means and the fourth means for tracking the contour line are provided, and the contour line is tracked in both the clockwise direction and the counterclockwise direction with reference to a specific point of the contour line, and the tracking from both directions is the same. The above problem is solved by stopping the tracking at the time of doing and generating the sewing data by using the line segment that alternately connects the points for each predetermined pixel in the tracking line as the sewing line.

[0008]

The present invention operates as follows.

That is, the original image of the pattern read by the image input device is inputted as a video signal and binarized, the obtained image is divided, and thereafter the contour line of the image is extracted.

Then, the contour line of the image is traced, that is, the contour line is traced in both the clockwise direction and the counterclockwise direction with a specific point of the contour line as a reference (start point), as shown in FIG. , When the tracking from both directions coincides, the tracking is stopped.

Further, sewing data is generated by using a line segment that alternately connects points for each predetermined pixel in the tracking line as a sewing line.

In this way, it is possible to satisfactorily finish a pattern whose direction changes without inputting the direction in which the figure is sewn one by one from the keyboard or the like and uniquely determining in the lateral direction and sewn. It will be possible.

[0013]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 2 is an explanatory diagram of a block configuration of the present embodiment, in which 12 is an image input device for reading a sketch 10.
Reference numeral 14 is an interface for the image input device 12, 16 is an original image memory for storing the original images A and B read by the image input device 12, and 18 is a target image of the original images A and B read by the image input device 12. (For example, the same image as the original image A), a target image memory, 20 is a contour image memory for storing the contour of the target image (for example, the same image as the original image A), and 22 is sewing data storage made of, for example, a floppy disk. A medium, 24 is an interface for a sewing data storage medium, and 26 is a central processing unit (CPU).

FIG. 3 is a flow chart for explaining the operation of this embodiment, and the operation of this embodiment will be described in detail below according to this flow chart.

When the operation of this embodiment is started in step 110 of FIG. 3, the original image is taken in from the image input device and converted into binary data in step 112.

That is, figures A and B in the sketch 10 of FIG.
And the like are read by the image input device 12, the video signal is binarized by comparison with a predetermined level signal, and stored in the original image memory 16 as image data.

Here, binarization of the image is performed as follows. That is, the signal read by the image input device 12 generally indicates the density of the original image at a specific position and is a continuous value. In order to make such a signal into a form that can be processed by a computer, it is determined that the signal is compared with a predetermined density level and that if the signal is higher than the density level, it is 1;

Next, in step 114 of FIG. 3, the image of interest is cut out, then in step 114 the contour of the image of interest is extracted, and then in step 11.
At 8, the starting point is searched and registered.

That is, one continuous image is extracted from the original image data, stored in the target image memory 18 of FIG. 2, and then the outline of one stored target image is extracted. Next, the contour line of the image of interest is scanned, for example, from the upper left side, and the first detected point is set as the starting point, and the starting point is searched and registered.

Next, in step 120, a number of pixels are tracked clockwise along the contour line, after which
In step 122, that point is registered.

That is, the contour line is traced clockwise with reference to a specific point on the contour line, and the coordinates of a certain number of points are registered as input points.

Next, in step 124, a certain number of pixels are tracked counterclockwise along the contour line, and then in step 126 the point is registered.

That is, the contour line is traced counterclockwise with the specific point on the contour line as a reference, and the coordinates of a certain number of points are registered as input points.

Next, in step 128, it is judged whether or not the tracking is completed. If it is judged that the tracking is not completed, the operations from step 120 to step 126 are repeated.

That is, the operation of tracing the contour line clockwise and counterclockwise with the specific point on the contour line as a reference and registering the coordinates of a certain number of points as input points from the clockwise direction. Repeat until the tracking and the counterclockwise tracking match.

If it is determined in step 128 that the tracking has ended, in step 130,
The sewing data is generated by dividing the line segment connecting the registration points into stitches, and then, in step 132, the sewing data is registered.

That is, when it is determined that the tracking has been completed, a line segment that connects the registered points in order is determined as a sewing line, and the points where the sewing line is divided at a predetermined pitch are needle drop points. The sewing data of the sewing machine is converted so that

Next, in step 134, it is judged whether or not all the images have been completed, that is, whether or not the operations from step 120 to step 132 have been completed for all the target images, and it is judged that they have not been completed. in case of,
The operations from step 114 to step 132 are repeated.

If it is determined in step 134 that all the images are finished, the operation is finished in step 136.

By the way, the image division in this embodiment is performed as follows. That is, the image stored in the original image memory 16 of FIG. 2 is scanned for the purpose of extracting a lump of images, and an image in which one pixel continues in a plane, that is, one of front, rear, left, and right The image in which is 1 is taken out.

Here, 0 to 1 is obtained by scanning in the horizontal direction.
Or if there is one change from 1 to zero,
It is determined that there is no zero pixel inside. Further, the condition of the subsequent processing is that there is no zero pixel inside.

Therefore, when there are zero pixels inside the taken-out image, it is checked whether or not the image exists inside, and, for example, the change from zero to one or from one to zero is performed by scanning in the horizontal direction. When each is three times or more, it is determined that an image exists inside.

When it is determined that the image exists inside, the image area is divided, the above-mentioned operation is repeated until the image disappears, and the image is stored in the image memory 18 of interest in FIG. .

FIG. 4 is a diagram showing the image of interest stored in the image of interest image memory 18 of FIG. 1 in this manner.
The point indicates that it is zero or white, and the point P indicates that it is 1 or black.

On the other hand, the operation of contour line extraction in this embodiment will be described in more detail as shown in FIG. That is, when the contour line extraction is started in step 210, the Y coordinate value of the pixel to be extracted, that is, the target point is set to zero in step 212, and then the X coordinate value of the target point is set to zero in step 214. To be done.

Next, in step 216, all values of eight points around the point of interest are checked. That is, D (X-
1, Y-1), D (X, Y-1), D (X + 1, Y-
1), D (X-1, Y), D (X + 1, Y), D (X-
1, Y + 1), D (X + 1, Y + 1), all 8 values are checked.

Thereafter, in step 218, it is determined whether or not all have the same value, and when it is determined that all have the same value, in step 220, coordinates of point P (X, Y).
Are set to zero and it is determined that they are not all the same value, the coordinates (X, Y) of the point P are set to 1 in step 222.

That is, eight image states around the point of interest are examined, and if all are 1 or zero and are the same, the position is set to 1, and otherwise the position is set to 0.

Next, in step 224, the X of the point of interest is
The coordinate value is advanced by 1 to X + 1, and then step 226
At, it is determined whether or not the X direction has ended.

If it is determined in step 226 that the X direction has not ended, the operations of steps 216 to 224 are repeated.

If it is determined in step 226 that the Y direction has ended, then in step 228 the Y coordinate value of the point of interest is advanced by 1 to Y + 1, and thereafter,
In step 230, it is determined whether the Y direction has ended.

If it is determined in step 230 that the Y direction has not ended, the operations from step 214 to step 228 are repeated.

If it is determined in step 230 that the Y direction has ended, the contour line extraction ends in step 232.

FIG. 6 is a diagram showing the contour line extraction image stored in the contour image memory 18 of FIG. 2 in this way,
The contour of the target image described in detail with reference to FIG. 4 is shown.

The operation of contour line tracking in this embodiment will be described in more detail as shown in FIG. That is, when the contour line tracking is started in step 310, the previous position number i is obtained in step 312, and then the position number i is advanced by 1 in step 314 to be i + 1.

That is, among the values of the rotation table shown in Table 1 below, the value i + 1 next to the position number i of the previous point is set as the search start number. In other words, in the rotation table of FIG. 8, the value i + 1 next to the position number i of the previous point is set as the search start number.

[0048]

[Table 1]

Next, in step 316, the value of the position obtained by adding the i-th offset of the rotary table to the position coordinate of interest is obtained, and in step 318, it is determined whether or not the value is black.

That is, the offset value of each coordinate is taken out from the position corresponding to the position number of the rotary table, and the position value added to the coordinate of the point of interest is obtained. Whether the value is black or not, that is, 1 or 0 is obtained. It is determined whether there is.

Next, when it is determined in step 318 that the value is not black, the value obtained by dividing (i + 1) by 8 is used instead of the position number i, and then step 3
In 22, it is judged whether or not the process is completed 7 times.

If it is determined in step 322 that the processing has not been completed seven times, the operations from step 316 to step 322 are repeated.

That is, when it is determined that the value of the position added to the coordinates of the point of interest is not black, that is, zero, the position number of the rotary table is shifted and the same operation is repeated.

On the other hand, if it is determined in step 322 that the processing has been completed seven times, it is treated as an end point in step 324, and then the position of i is returned in step 326.

If it is determined in step 318 that the value is black, that is, 1, the position number i
The position of -4 is saved as the previous position, then the position number is returned to the position of i in step 326, and finally the contour line tracking is ended in step 330.

That is, the position of 1 found first is tracked one by one such that it becomes the next point, and each point in the clockwise direction and each point in the counterclockwise direction coincide with each other, or within 1 point before and after. When it reaches, the contour tracking is finished.

FIG. 9 is a diagram showing the manner of contour line tracking performed in this way, in which the solid line indicates the sewing line,
A cross mark indicates a division point.

The present invention is not limited to the embodiment described in detail with reference to FIGS. 2 to 9, and various modifications are possible. For example, there is no designated data as a result of executing the read function. If such a result is obtained, another search function may be used instead of the above-mentioned search function.

[0059]

As described above in detail, according to the present invention, the contour of the image of interest in the original image obtained from the image input device is tracked in both the clockwise direction and the counterclockwise direction while maintaining the equal pitch. There is an advantage that the needle drop points can be generated so that the line segments whose end points are alternately the positions become the sewing lines.

Further, according to the present invention, a pattern in which the direction is changed can be improved without inputting the direction in which the figure is sewn one by one from the keyboard or the like and uniquely determining in the lateral direction and sewn. It also has the advantage of being finished.

[Brief description of drawings]

FIG. 1 is a diagram for explaining an outline of the present invention.

FIG. 2 is a block circuit diagram for explaining an embodiment of the present invention.

FIG. 3 is a flowchart for explaining the operation of this embodiment.

FIG. 4 is a diagram for explaining an image of interest in this embodiment.

FIG. 5 is a flowchart for explaining the operation of contour line extraction in the present embodiment.

FIG. 6 is a diagram for explaining contour line extraction in the present embodiment.

FIG. 7 is a flowchart for explaining the operation of contour line tracking in the present embodiment.

FIG. 8 is a diagram for explaining a rotary table in the present embodiment.

FIG. 9 is a diagram for explaining contour line tracking in the present embodiment.

[Explanation of symbols]

 10 ... Basic image 12 ... Image input device 14, 24, 28 ... Interface 18 ... Original image memory 20 ... Contour image memory 22 ... Sewing data storage medium 26 ... CPU 30 ... Display device

Claims (1)

[Claims] 1. A first means for inputting an original image of a pattern read by an image input device as a video signal to binarize it, a second means for dividing the image obtained from the first means, and the image. And a fourth means for tracing the contour line, and tracing the contour line in both the clockwise direction and the counterclockwise direction with reference to a specific point of the contour line. However, when the tracking from both directions coincides with each other, the tracking is stopped, and the sewing data is generated with the line segment alternately connecting the points for each predetermined pixel in the tracking line as the sewing line. Sewing data creation device.