JPH04114692A - Making method of embroidery data of sewing machine - Google Patents

Abstract

PURPOSE:To easily apply embroideries with a simple manipulation for an original pattern that users require, by connecting to the first needle-points by scanning of this time where dot data are detected at first, and erasing the dot data of the scanned line to repeat the above scanning until non of the original pattern data has been confirmed and to make embroidery data to apply the embroideries. CONSTITUTION:The coordinates where the dot data are detected at first in the previous scanning is decided to be the first needle points N1. In the case of continuous dot data, the needle-points with a certain pitch P is decided and in the case of discontinuous dot data, the coordinates are decided on the last needle-point N2. The coordinates where the dot data are detected at first in the scanning of this time is connected to the coordinates of the needle-point N2 with a straight line L1 and the needle points with a certain pitch P from the coordinates of the needle point N2 are settled and the coordinates where the dot data are detected at first in the scanning of this time is decided to be the first needle point N3. The original pattern data decided to be the needle point by scanning are gradually erased and at the same time, the indication of the LCD display in accordance with the original pattern data are also gradually erased. In this way, every line is continuously scanned one by one up to the right lower second end point B repeatedly.

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention relates to a method for generating embroidery data for a sewing machine capable of embroidering, and relates to a sewing machine capable of embroidering by generating embroidery data based on W image data inputted through detailed operations. Embroidery data generation method.

[Prior art and problems to be solved by the invention] Conventionally,
When creating embroidery data for embroidery, an expert operates a digitizer, etc. to create embroidery data from the original pattern, inputs the original pattern using an image scanner, etc., performs image processing, and then stitches the embroidery. Embroidery data was created by specifying end points, sewing order, sewing pitch, sewing width, and stitch type (zigzag stitch, triple stitch, etc.). However, these traditional embroidery data creation methods are
It required a relatively high level of specialized knowledge and was complicated to operate. Therefore, for example, in the case of a home embroidery sewing machine, when a user wants to embroidery based on an original original pattern that he/she desires, he/she does not need the relatively high level of specialized knowledge that is required with conventional methods. There is a need for an input processing method for original patterns that is easy to handle. [Means for Solving the Problems and Effects of the Invention] The present invention provides an image input device such as an image scanner, compared to conventional processing methods that require relatively high level of specialized knowledge and are complicated to operate. With a simple operation, embroidery data is automatically generated using a relatively popular method of scanning original image data input from an IFI pattern using an original image data processing program, and embroidery can be sewn. It has the effect of allowing a person to easily embroider an original pattern, etc. desired by a person with simple operations.

【Example〕

The present invention will be explained below using examples. ○Configuration of the embroidery device The configuration of the embroidery device will be explained with reference to FIG. In the figure, on the front of the sewing machine body 10 of the m'l L and h sewing machines, there are a start/stop key I for starting and stopping the sewing machine, a part 12 of operation keys including embroidery keys etc. to be described later, and an original drawing to be described later. An LCD display device [3 is provided for displaying various displays of the sewing machine, including displays related to image processing. The ROM card reader part 14 is for reading the set image scanner ROM card. As described later, the image scanner ROM card contains a series of image processing programs that compress the original image data read from the image scanner, remove noise, and generate embroidery data by scanning the compressed and noise-removed W and image data. is built-in. On the side of the sewing machine, there is a controller terminal 15 for connecting a sewing machine controller (not shown) that controls the speed of the sewing machine, and a plug holder for connecting an image scanner 20 as an image input device using a dedicated cable 21. has been done. In this embodiment, the image scanner 20 has an effective reading width of 6
3mm, gradation output is black and white binary type, main scanning effective pixel count is 5
There are 04 pieces. When the reading start button 22 is pressed in the image scanner input mode and the image scanner 20 is moved over the original pattern to be input, the W image data is stored in the VRAM 1 built into the sewing machine 10. : It is set to be loaded. ○Outline of operating procedure 1.) Before turning on the sewing machine, install the
Set the OM card in the ROM card reader part 14,
Dedicated cable 21 for image scanner 20 in the plug holder
Connect the connector 23 of. 2) Next, turn on the power and press the embroidery key (operation keys 2) to enter the image scanner input mode and display the LCD screen.
A message "Please press the image scanner's reading start button" is displayed on the screen of the display device 13. 3) Input in advance on white paper with a black pen, etc. Place the image scanner 20 on top,
While pressing the reading start button 22, move the original image pattern 30 to be input from the first position to the last position. By this operation, the input characters and pictures are displayed on the LCD display screen. 4) Place the embroidery frame covered with cloth on the sewing machine 10 and press the start/stop key I to scan the original image data and generate embroidery data using the image processing algorithm described later on the detected original image data. and embroidery stitching begins. In the above procedure, a series of controls up to the generation of embroidery data in response to user operations are performed using the image scanner R
Image processing is performed by 70 grams stored on the OM card. For convenience, among image processing programs, a program for generating embroidery data by scanning original image data that has been compressed and noise removed is called an image processing algorithm to distinguish it from other programs. 0 image processing program 1) By operating the W-side input image scanner 20, the horizontal direction data is
04 dots/line, vertical direction data for 504 lines (504 dots) is stored on the VRAM of the sewing machine. This data is then stored in another area of the VRAM by thinning out the horizontal data every other bit, and similarly for the vertical data, it is thinned out every other line.
Original image data of 52 x 252 dots is stored. 2) Noise Removal Next, the 252 x 252 dot data stored in the VRAM is converted into data with dots on the top, bottom, left and right using the 4-concatenation compression method (*1) of the image processing language described later, and V
The horizontal data is 126 in another area of RA and M.
The vertical direction data is stored as 126 lines of data in a 12.6 x 26 dot/t configuration. This data is used as data for image processing. This data is further compressed to generate 63x63 dot data for image display, and stored in another area of ~'RA I'vl. *]: 4-concatenation compression method In Figure 14, black and white circles indicate dot data, and the black circle data is only valid when there are white circle data above, below, left and right of the target black circle data. In this embodiment, this process is performed for data having a 252×252 dot structure, every other dot for horizontal data, and every other line for vertical data. The dot density after processing is as shown in FIG. 3) Image Processing Algorithm Next, the scanning method of the image processing algorithm will be explained with reference to FIGS. 7 to 9. As shown in FIG. 7, the odd-numbered scan is performed at the first end point A.
9 to the right, sub-scanning is performed downward J lines at a time as shown by the arrow CO until it hits the original image data (hereinafter referred to as dot data) and is interrupted as shown in Figure 9. Repeat until the second end point B. Also, for the even-numbered scans, as shown in Figure 8, the scan is performed to the left from the second end point B at the bottom right until it hits the dot data and is interrupted, and the sub-scan is performed line by line upward as shown by the arrow Ce. Repeat until the first end point A on the upper left. There are basically the following two algorithms for setting the needle drop point by scanning.・Algorithm 1: Set the coordinates where dot data is detected by scanning as the first needle drop point, set the needle drop points at a constant pitch from there, and set the coordinates where no dot data is detected as the final needle drop point of that scan. , the straight line connecting the last needle drop point coordinates from the previous scan and the coordinates where dot data was first detected this time is in the opposite direction to the scan direction, and the data from this scan is Only for the detected horizontal position, the needle drop is set on the straight line at a coordinate position that is an integer multiple of a constant pitch from the last needle drop point of ni1 times, and the coordinates where the dot data was detected for the first time this time are set. is set as the first needle drop point for this scan. - Algorithm 2 If the coordinate line where the first dot data hit in the current scan is two or more lines away from the last needle drop point in the previous scan, the coordinates of the first dot data in the current scan are used as the needle drop point. point, and do not set the needle drop point between them. 4) Specific example of image processing algorithm These two basic algorithms will be extended and explained using a specific example. Each side shown below is shown as an example based on odd-numbered scans, but the same applies to even-numbered scans if the left and right and top and bottom are swapped. As an example derived from Algorithm 1, as shown in Fig. 10, if the coordinates where dot data was first detected in the previous scan are set as the first needle drop point N1, and the dot data is continuous, Set the needle drop point at a constant pitch P,
If the dot data is interrupted, set the coordinates as the last needle drop point N2, connect the coordinates where dot data was first detected in this scan with the coordinates of the needle drop point N2 with a straight line Ll,
Set the needle drop point at a constant pitch P from the coordinates of the needle drop point N2,
The coordinates at which dot data is first detected in the current scan are set as the first needle drop point N3 in the current scan. In the same area, Pl and P2 are the remaining pitches of the above-mentioned constant pitch needle drop point setting.・As shown in Figure I, the straight line L2 connecting the coordinates of the last needle drop point N4 from the previous scan and the coordinates where dot data was first detected in the current scan is correct with respect to the current scan direction. In the case of the direction, the coordinates at which dot data is first detected in the current scan are set as the first needle drop point 5 in the current scan, and no needle drop points are set between them.・As shown in Figure 12, the straight line L3 connecting the coordinates of the last needle drop point N6 from the previous scan and the coordinates where dot data was first detected in the current scan is in the opposite direction to the current scan direction and For the part where the dot data is located in the horizontal direction, do not set the needle drop point on the straight line L3, but set the needle drop point from the part with dot data at a position that is an integral multiple of the fixed pitch nP. Set N7 and N8,
The coordinates at which dot data is first detected in the current scan are set as the first needle drop point N9 in the current scan. As an example derived from Algorithm 2, - As shown in Figure 13, when the coordinates where dot data was first detected in the current scan are separated by two lines or more from the last needle drop point NIO in the previous scan. The coordinates of the first dot data of this time are set to the needle drop point Nil, and no needle drop point is set on the straight line L4 connecting them. 5) Regarding the scan side method using the image processing algorithm, τ for the scan example using the image processing algorithm, Fig. 1~
This will be explained with reference to FIG. In these drawings, hatched portions of dot data indicate needle drop points set by scanning, and symbols 01 to C6 indicate sub-scanning directions. - First Scan M The first scan will be explained with reference to FIG. The original image data having a 126×126 dot configuration after noise removal is scanned rightward from the upper first end point A, and the sub-scanning is continued downward one line at a time until the original image data is detected. The coordinates where the dot data was detected by scanning are set as the first needle drop point, and from there the needle is set at a fixed pitch (2 mm in this example).
Set the needle drop point with , set the coordinate where no dot data is detected as the last needle drop point of that scan, and set the coordinates of the last drop point from the previous scan and the coordinates where dot data was first detected this time. Only for horizontal positions where the connecting straight line is in the opposite direction to the scan direction and the dot data from the current scan is detected with respect to the straight line, a needle of a constant width is placed on the straight line from the last needle drop point of the previous time. A falling point is set, and the coordinates where dot data is first detected this time are set as the first needle falling point of this scan. The original image data for which the needle drop point has been set by scanning is erased one by one, and at the same time, the display part of the LCD display device that corresponds to the original image data is also erased one by one.In this way, scanning is continued line by line. 2@ Scan repeatedly until point B. At the time when the first scan is completed, the original image data indicated by the hatched area and the corresponding display area of the LCD display disappear. In this case, the needle drop point for the straight line L 1.1 is set in the same way as in the example of FIG. I based on algorithm 1.・Second scan As shown in Figure 2, scan to the left from the second end point B, and continue scanning in the same way as the first scan upwards one line at a time until the first end point A. Scan repeatedly. At the end of the second scan, the original image data indicated by diagonal lines and the corresponding display portion of the LCD display disappear.・Third scan As shown in Figure 3, scan to the right from the first end point A, continue scanning downward one line at a time in the same way as the first scan, until the second end point B. Scan repeatedly. At the time when the first scan is completed, the original image data indicated by the hatched area and the corresponding display area of the LCD display disappear. In this case, the needle drop points for lines L12 to L14 are set in the same way as in the example of FIG. It is configured as in the example.・Fourth scan As shown in Figure 4, scan in the left direction from the second end point B, and continue scanning upward line by line in the same way as the first scan, until the first end point Scan repeatedly until A. At the end of the fourth scan, the original image data shown in the shaded area and the corresponding display area of the LCD display disappear. In this case, the needle drop points for the straight lines L17 and Li2 are set in the same manner as in the example of FIG. The needle drop points for the straight lines L2] and L22 are set in the same manner as in the example shown in the figure, and the needle drop points for the straight lines L2 and L22 are set by Algorithm 2. - After the 5th scan, the 5th scan and 6th scan are performed as shown in Figures 5 and 6, respectively, and when the 6th scan is completed, the original image data shown in the shaded area and the Since the display part of the corresponding LCD display device disappears, the seventh
The second scan (not shown) confirms that there is no more original image data to be processed, and the embroidery data generation process using the image processing algorithm ends. As described above, embroidery data is automatically generated by the relatively popular method of scanning original image data using a processing program, and 'ljl embroidery is performed. The above embodiment is an online sewing machine in which embroidery data is automatically generated from original image data read from an image scanner by pressing the start/stomp key on the sewing machine, and embroidery is performed via an embroidery data buffer, etc. However, it is also possible to use an offline format instead. In other words, the sewing machine is equipped with a dedicated output connection terminal, and the embroidery data generated by the image processing program is not used for online embroidery. It is also possible to write data to a RAM card or the like as a storage medium, and then insert the RAM card or the like with the embroidery data written into the sewing machine when you want to embroider, so that you can freely and repeatedly embroidery. [Effects of the Invention] As described above, according to the present invention, image input devices such as image scanners can be easily used, compared to conventional processing methods that require relatively advanced specialized knowledge and are complicated to operate. N for the original image data input from the original image pattern by the operation
The embroidery data is automatically generated using a relatively popular scanning method using an image data processing program, and the embroidery data can then be sewn, allowing the user to easily embroider an original pattern desired by the user with simple operations. Effects can be obtained.

[Brief explanation of drawings]

The drawings relate to an embodiment of the present invention, and FIGS. 1 to 6 are diagrams visually showing the scanning procedure for original image data, where FIG. 1 is the first scan and FIG. 2 is the second scan. ,
FIG. 3 shows the third scan, FIG. 4 the fourth scan, FIG. 5 the fifth scan, and FIG. 6 the sixth scan. Figures 7 to 9 are drawings for explaining the scanning method. Figure 7 is the original image obtained by odd-numbered scans, Figure 8 is the even-numbered four scans, and Figure 9 is the original image obtained by the odd-numbered scans. Each figure shows how data is scanned. Figures 10 to 13 are diagrams explaining the algorithm for generating embroidery data by scanning from Rinwa data using specific examples. Figure 10 is an example of data generation using algorithm 1 for embroidery data generation; Figure 12 is an example of data generation different from Figure 10 based on Algorithm 1 for embroidery data generation, Figure 12 is Figure 10 based on Algorithm 1 for embroidery data generation, lol] An example of data generation different from Figure 1, Figure 13 The figure shows an example of data generation using Algorithm 2 for embroidery data generation. Figures 14 and 15 visually show the VRAM memory block to explain noise removal using the 4-connection contraction method. Figure 14 shows the before processing, and Figure 15 shows the after processing. Show. FIG. 16 is a perspective view showing the configuration of the embroidery device. 20 is an image scanner as an image input device, A is the first end point, and B is the second four points. Patent applicant Janome Minn Kogyo Co., Ltd. Figure 1 Figure 2 Figure ○ Figure Figure ○ Figure

Claims (1)

[Claims] I. In a sewing machine that can be connected to an image input device and that reads original image data from an original image pattern and performs embroidery based on the original image data, an odd-numbered The first scan starts from the first end point at the top left and scans downward one line at a time to the right until the second end point at the bottom right, and the even number of scans starts from the second end point at the bottom right and goes one line to the left. Scan upward one by one until you reach the first end point on the upper left, and use the coordinates where dot data is detected by scanning as the first needle drop point.From there, set the needle drop points at a constant pitch until dot data is detected. The coordinates at which dot data is no longer detected are the last needle drop point of that scan, and the straight line connecting the coordinates of the last needle drop point from the previous scan and the coordinates where dot data was first detected this time is in the opposite direction to the scan direction and Set the needle drop point on the straight line at a coordinate that is an integral multiple of a constant pitch from the previous last needle drop point on the straight line only for the horizontal position where dot data from the current scan is detected, and Connect the first needle drop point of this scan where dot data was first detected by this scan, erase the dot data of the scanned line, and continue scanning until it is confirmed that the original image data is gone. A method for generating original image data for a sewing machine, characterized in that embroidery data is generated by repeating the steps 1 to 3, and embroidery data can be performed. II. If the coordinate line where the first dot data hit in this scan is two or more lines away from the last needle drop point in the previous scan, set the coordinates of the first dot data in this scan as the needle drop point. 2. The method of generating embroidery data for a sewing machine according to claim I, wherein the needle drop point is not set during this period.