JPH0762852B2 - Textile design equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fabric designing device for designing a pattern of a dyed fabric which is woven by using a jacquard loom or the like, and more particularly to designing a fabric using a computer graphics technique. The present invention relates to a textile design device.

[0002]

2. Description of the Related Art Generally, woven fabrics are roughly classified into print fabrics and dyed fabrics. The printed fabric is also called a post-dyed fabric, and is a pattern printed on a plain fabric woven with threads of a white background or other colors. On the other hand, the pre-dyed fabric is woven so as to form a pattern using pre-dyed threads.For a relatively simple pattern such as a plaid, use a dobby loom etc., and for a complicated pattern, It is produced using a jacquard loom or the like. For example, a tie cloth or the like is often produced on a jacquard loom.

A conventional process for making a fabric using a jacquard loom is generally as follows. (1) Draw a woven pattern with colors. This is called a normal picture. (2) The number of warp threads and weft threads is determined in consideration of the diameter of the thread, the thread interval, and the like with respect to the actual size of the true picture. (3) On a graph paper having cells corresponding to each rectangle formed by the intersection of the warp threads and the weft threads, an enlarged view similar to the above-mentioned regular picture is made while coloring each cell. This is called a design drawing.

(4) A pattern paper is produced based on this design drawing. The pattern paper is in the form of a punch card, and one sheet corresponds to one weft yarn of the fabric, and controls the position of the warp yarn of the loom.
This pattern paper is required for the number of weft threads,
Usually, one design has several thousand pieces
It may exceed 10,000. Also, the holes made in the pattern paper are
It indicates whether or not each warp thread is pulled up, and corresponds to the number of warp threads. (5) The produced pattern paper is loaded into the jacquard loom. Then, when the loom is operated, whether or not the warp thread is pulled up is controlled for each pattern paper depending on the presence or absence of the hole, and the process of sewing the gap of the warp thread and running the weft thread is repeated, Will be woven. The running weft thread is changed according to the pattern.

In response to such a traditional process, a computer graphics technique has recently been used to create a graphics image corresponding to a true picture on a display. In addition, a magnified view of the designed picture is read by a high-resolution drum scanner etc. and input to a computer, and various conditions such as the thickness and spacing of the warp and weft threads to be used are input to design based on virtual graph paper. A system has also been developed in which a diagram is created in a computer and data for creating a pattern paper and data for controlling a loom are output.

[0006]

However, even in the above-mentioned conventional system, it is the current situation that all the steps from planning design to weaving have not been consistently automated. The reason is that the image data created using computer graphic techniques cannot be directly imported as the image data for design drawing creation.
This is because a pattern created on a computer cannot be enlarged to an arbitrary size.

That is, in the case of making a cloth such as a tie,
Generally, an extremely thin thread such as 1/10 to 1/12 mm is used. Therefore, when a design drawing corresponding to the warp and weft density is created, the size of one square is 0.
It is less than 1 mm square. When creating such a design drawing from a graphic image, at least 1 should be placed in this grid.
Dot data must be present. On the other hand, in the design work by computer graphics, it is necessary to represent the entire image on the display, and it is often the case that the photograph is taken in and edited by the image scanner.
Generally, image data of coarse dots is processed as compared with the image data required for design drawing creation. Therefore, there is a problem that the dot densities of both image data do not match.

Therefore, conventionally, coarse image data created by a computer is once printed out, an enlarged view is rewritten and the data is captured again by a scanner, or an image is printed out from an image by using an expensive high resolution drum scanner. There is a problem in that the time-consuming work of re-importing the data is necessary and the period until the product is completed cannot be shortened sufficiently.

The present invention has been made to solve such problems, and can automate the whole process from planning design to weaving, and can greatly shorten the period from design to product completion. An object of the present invention is to provide a fabric designing device capable of performing the above.

The fabric design apparatus according to the present invention is an input device.
Woven fabrics based on construction commands given by the vice
Image day of a picture with a colored pattern of
Image editing processing means for generating a data
The image data of the normal picture generated in the stage
Image storage means for storing in a form, and
A contour extracting means for extracting a contour line data of each color pattern from 憶raster data, and vector conversion means for converting the outline data of each color pattern extracted in this outline extraction means into vector data, the The vector data of the pattern of each color obtained by the vector conversion means is stored in the storage means.
Vector coordinate conversion means for performing coordinate conversion based on the parameters indicating the density of warp and weft threads of the woven fabric with respect to the dot density of the stored normal image data, and the vector data converted by the vector coordinate conversion means. Based on the contour line drawing means for drawing the contour line of the pattern of each color in the image storage means with a dot density corresponding to the density of the warp and weft threads of the fabric, and the pattern of each color drawn by the contour line drawing means. The interior of the outline is filled with each color to create a design drawing
Equipped with a fill processing means for generating image data, the density of warp and weft threads can be changed from a normal picture with an arbitrary dot density.
Obtain image data for design drawing with corresponding dot density
Characterized in that the so that.

[0011]

The image data created by the graphics computer and the image data read by the image scanner are raster data composed of dots having red (R), green (G), and blue (B) information. , It is usually difficult to enlarge these data at an arbitrary magnification such as 1.5 times and 2.1 times, but if this raster data is converted into vector data, this information can be said to be position information, so it can be moved. Processing such as enlarging, reducing, and rotating can be easily performed by a matrix operation or the like.

According to the present invention, since the contour line data of the pattern of each color is once extracted from the raster data on which the pattern of the fabric is drawn and the contour line data is converted into vector data, the data amount is also compressed. In addition, processing such as movement and enlargement becomes easy. Therefore, in the vector coordinate conversion unit, based on the parameter indicating the density of the warp and weft of the fabric,
The coordinates of the vector data of the contour line are converted. The converted vector data is drawn in the memory and the inside is further filled. As a result, raster data having a dot density corresponding to warp and weft densities is generated from raster data having an arbitrary dot density. This raster data will be used as design drawing image data.

Therefore, according to the present invention, it is possible to automate the entire process from planning design to weaving, and it is possible to greatly shorten the period from design to product completion.

[0014]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a diagram showing a configuration of a fabric manufacturing system according to an embodiment of the present invention. This system includes a fabric design device 1 for performing designing of a fabric pattern on a display screen, creation of a design drawing, and generation of pattern paper data, and pattern paper data 2 to pattern paper 4 created by the device 1. It is composed of an automatic embossing device 3 for producing a woven fabric and a jacquard loom 5 for weaving a fabric 6 by reading the produced embossing paper 4. The fabric design device 1 is composed of a graphics computer, and includes a computer main body 11, a keyboard 12, and a display device 1.
3, an image scanner 14, a mouse 15, a digitizer 16, an external storage device 17, and the like.

FIG. 2 is a functional block diagram of essential parts of the fabric designing device 1. The image edit processing unit 21 generates and edits image data forming a regular picture in which the pattern of the fabric is drawn, based on a drawing command given by an input device such as the keyboard 12, the mouse 15 and the digitizer 16. This image data is displayed in an arbitrary size on the display device 13 so that the designer can design efficiently. The created normal picture is stored in the image memory 22 in the form of raster data. Further, the image data read by the image scanner 14 is also stored in the image memory 22. The image edit processing unit 21 also performs edit processing on the image data captured by the image scanner 14.

The normal picture (raster data) stored in the image memory 22 is the image data of the dot density in consideration of the design process, and is usually coarser than the actual density of the warp and weft of the fabric. Has become. Therefore, the image conversion processing unit 23 converts such a rough-density regular picture into image data for design drawing creation corresponding to the density of the threads of the fabric. The image conversion processing unit 23 includes a contour line extraction unit 24, a vector conversion unit 25, a vector coordinate conversion unit 26, a contour line drawing unit 27, and a filling processing unit 28.

FIG. 3 is a flow chart showing the flow of processing of the image conversion processing unit 23. First, the contour line extraction unit 24 is activated, and the tracking process of the contour line data of the image is started (S1). This outline tracking processing is executed in the procedure shown in the flowchart of FIG. That is, first, the regular picture displayed on the display device 13 is raster-scanned to check the number of colors used (S11).
Next, one of the colors used is selected and the contour line of that color is traced to obtain the position vector (S12). This contour tracking processing is executed for all colors (S1).
3).

As a method of tracing a pattern of a certain color, for example, as shown in FIG. 5, a specific point is set as a starting point P0,
It is possible to use a method in which the boundary of the pattern is traced counterclockwise from the start point P0, and when one reaches the start point P0, the trace of one pattern is ended. The data obtained by such a tracking method is composed of a chain of color information, coordinates of the starting point P0, and information of adjacent pixel positions as shown in FIG. Since it can be expressed as one, information of two points can be expressed by 1 byte, and the original image information can be completely held with a small capacity.

The obtained contour line data is converted into a vector data string by the vector conversion unit 25 (S2). As a result, the contour line is represented by a set of absolute coordinate values of each point. Then, the vector coordinate conversion unit 26 converts the vector coordinates (S3). Vector coordinate conversion unit 25
Is given a weaving parameter indicating a warp yarn interval, a weft yarn driving density, and the like. The vector coordinate conversion unit 26 executes coordinate conversion processing as shown in the following Expression 1 based on the weaving parameter and the display density of the regular picture.

[0020]

[Equation 1]

Here, (x, y) is the vector coordinate before conversion, (X, Y) is the vector coordinate after conversion, and the conversion matrix [A] is the weft thread for the dot density in the horizontal direction of the normal picture. Can be set to any value according to the density of the warp, the density of the warp yarn with respect to the vertical dot density of the normal picture, the amount of position movement, the amount of rotation, and the like. FIG. 7 shows an example in which a normal picture is magnified 1.5 times by such conversion processing.

Next, the contour line drawing unit 27 draws a contour line in the image memory 22 based on the converted coordinates (S).
4). At this time, by connecting adjacent points with a straight line, it is possible to perform linear interpolation between the points. When the contour line is drawn, the inside of the contour line is filled based on the color information attached to each contour line (S5). The filling processing unit 28 is performed by executing the contour line detection and the contour line inside determination while executing the raster scan to the image memory 22.

By the above processing, it is possible to realize conversion of a regular picture into image data having an arbitrary dot density. Then, by designating a weave design such as plain weave or twill weave for the obtained image data, the vertical relationship between the weft and warp yarns is designated, for example, as shown in FIG. 8, and the design drawing is completed. .

In the above embodiment, the system in which the pattern paper 4 is generated from the pattern paper data 2 to control the jacquard loom is taken as an example, but the loom is directly controlled from the pattern paper data via the controller. It goes without saying that it can also be applied to a system.

[0025]

As described above, according to the present invention, the contour line data of each color is extracted from the raster data in which the pattern of the fabric is drawn, and this is converted into vector data to convert the warp and weft yarns of the fabric. By performing enlargement / reduction based on the parameter indicating the density, it is possible to obtain the design drawing image data of the dot density corresponding to the density of the warp and weft from the normal picture of any dot density. All the processes up to weaving can be automated, and the period from design to product completion can be greatly shortened.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a fabric manufacturing system according to an embodiment of the present invention.

FIG. 2 is a functional block diagram of a main part of the fabric design device in the system.

FIG. 3 is a flowchart showing a processing flow of an image conversion processing unit in the same apparatus.

FIG. 4 is a flowchart of contour line tracking processing in the image conversion processing.

FIG. 5 is a diagram for explaining the contour tracking process.

FIG. 6 is a diagram showing an example of data obtained by the contour tracking process.

FIG. 7 is a diagram illustrating an example of coordinate conversion processing.

FIG. 8 is a diagram showing an example in which a weaving texture is added to image data.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Textile design device, 2 ... Cutter paper data, 3 ... Automatic embossing device, 4 ... Cutter paper, 5 ... Jacquard loom, 11 ... Computer main body, 12 ... Keyboard, 13 ... Display device, 14 ... Image scanner, 15 ... mouse, 16 ... digitizer, 17 ... external storage device, 21 ... image edit processing unit, 22 ... image memory, 23 ... image conversion processing unit, 2
4 ... Contour line extraction unit, 25 ... Vector conversion unit, 26 ... Vector coordinate conversion unit, 27 ... Contour line drawing unit, 28 ... Fill processing unit.

Claims (1)

[Claims] 1. A drawing command provided by an input device.
Draw a colored pattern of the fabric at any magnification based on the mand
Image processing means for generating image data
And the image data of the true picture generated by this image editing processing means.
Image storing means for storing the data in the form of raster data, contour line extracting means for extracting the contour line data of the pattern of each color from the raster data stored in the image storing means, and the contour line extracting means. Vector conversion means for converting the contour line data of the pattern of each color into vector data, and the vector data of the pattern of each color obtained by the vector conversion means are stored in the storage means.
Vector coordinate conversion means for performing coordinate conversion based on the parameters indicating the density of warp and weft threads of the fabric with respect to the dot density of the data, and the contour line of the pattern of each color based on the vector data converted by the vector coordinate conversion means. A contour line drawing unit that draws in the image storage unit with a dot density corresponding to the density of the warp yarns and the weft yarns of the fabric, and the inside of each contour line of the pattern of each color drawn by the contour line drawing unit. fill comprising a filling processing means for generating image data for creation of design diagram, the corresponding warp and weft densities from positive picture of any dot density
Get the image data for design drawing with the specified dot density
A textile design device characterized by the fact that it has been made.