JPH0788609B2 - Photo weaving 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 photographic weaving apparatus which automatically creates pattern paper data required for weaving based on pattern data optically read from photographs and the like.

[0002]

2. Description of the Related Art Conventionally, when a picture of a fabric woven by a jacquard loom or the like is created based on a photograph, a printed matter, a painting, etc., a skilled engineer draws up a design drawing from these photographs and the like. An organization chart is created by assigning organizations to, and the pattern paper data is created from this organization chart.

To draw a design drawing means that an engineer sets dozens of colors according to the color change of a photograph or the like and draws the photograph on the design paper (graph paper) using the set color. A texture chart is created by determining a finite number of textures created in advance, that is, a crossing pattern of warp threads and weft threads, corresponding to each color of the design drawing.

The preparation of such an organizational chart requires a considerable amount of skill, and there is a limit in expressing the subtle color tones of photographs.

The color of the fabric depends on the colors of warp and weft, but the number of colors that can be used is limited (for example, 8).
Since there are 10 to 10 colors), the colors of warp and weft must be selected according to the shade of the photograph. It takes a lot of skill to select this color, but it takes a lot of time and cost to re-dye warp threads and weft threads according to the hue.

[0006]

In order to solve the problem caused by the manual work, there is an attempt to create the above-mentioned design drawing and organization chart by a computer.

A method of converting image data read by an optical scanner from a photograph or the like into an organizational chart by using a dither method, which is a method used for reproducing an intermediate color tone by a color printer or the like. is there.

According to this dither method, the intermediate color tone can be reproduced in a pseudo manner with a limited number of colors, but pattern paper data (weaving data for controlling the jacquard loom) is created from the organization chart. However, when weaving a woven fabric, the problem that the weft threads on the surface of the woven fabric appears.

The woven fabric is composed of a combination of warp and weft, and is woven so that only the weft appears on the surface of the woven fabric. In other words, the weft thread of the specified color is pulled out from the back, passes through the front side of the warp thread, then returns to the back side, and the next weft thread passes through the front side of the warp thread in the same way. However, when the weft yarn is pulled into the back side of the warp yarn, the portion exposed on the fabric surface is stopped. However, when weft yarns of the same color continuously appear on the surface, there is nothing to fix the weft yarns during this period, and when the number of consecutive weft yarns is large, the weft yarns float from the surface of the fabric. When the weft yarn floats in this way, problems such as the weft yarn being caught or the fabric surface being disturbed occur.

The present invention has been proposed to solve such a problem. When weft yarns of the same color are continuous on one weft line, the weft yarns are stopped by warp yarns.
An object of the present invention is to provide a photographic weaving device designed to prevent the weft from floating.

[0011]

According to the present invention, as shown in FIG. 12, a means 21 for optically reading a photograph or the like as image data and an intermediate color tone is limited by a dither method based on the image data. Means 22 for creating an organization chart of a predetermined matrix that is reproduced in a pseudo manner according to the number of colors, means 23 for allocating the limited number of weft thread colors in accordance with this organization chart, and weft thread colors of the same color on each line of the weft thread allocation Means 25 for comparing the number of consecutive threads with a preset number of checks, and when the number of consecutive pieces is equal to or greater than the number of checks, the weft thread assignment is corrected so that the weft thread color is replaced with the warp thread color at a preset predetermined interval. And means 26.

[0012]

When the weft yarns of the same color are continuous on the woven fabric surface in the weft line direction, the warp yarns can stop the weft yarns in the middle, preventing the weft yarns from floating from the woven fabric surface.

[0013]

EXAMPLES Examples of the present invention will be described below.

In FIG. 11, 11 is a color scanner for optically reading a photograph or the like, and 10 is a pseudo by a small number of colors (for example, 8 colors) in which an intermediate color tone is limited by a dither method based on this image data. It is a computer that creates the organization chart to be reproduced in Fig. 1, assigns the weft thread color based on the organization chart, applies the weft thread color floating prevention organization, and further creates pattern paper data.

In principle, a weft thread is used to reproduce the pattern of the image data, but in order to reproduce an intermediate color tone, according to the dither method, for example, as shown in FIG. 1, a 4 × 4 matrix is used as a unit. An array indicating the order in which the colors (dots) necessary for obtaining 16 levels of gradation are set is determined. FIG. 2 shows an example of a pseudo intermediate tone pattern obtained by this, and shows (2), (6) and (10) in FIG.

As an example, the matrix array obtained by converting the image data of FIG. 3 into color data of eight colors by the dither method is as shown in FIG. 4, for example. The conversion theory based on the dither method is widely used in the field of color printers and is a well-known fact, so a detailed description thereof will be omitted.

Assuming that FIG. 4 is a woven structure chart, all the matrices are assigned with weft threads of eight colors,
The pattern data is created based on this, but if the fabric is woven according to the pattern data created in this way, and if the image data could be ideally reproduced,
It becomes like FIG. FIG. 5 shows the weft threads of eight colors arranged according to FIG.

By the way, as can be seen from the fourth line from the bottom in FIG. 5, eight reds continue in a row,
In this portion, the weft thread floats from the surface of the woven fabric, causing the weft thread to be caught or the fabric surface to be disturbed.

FIG. 6 shows such a structure. When the same weft thread color is continuous in one weft line, the weft thread easily separates from the surface of the fabric, and as shown in FIG. 7, warp threads are formed on the surface in the middle of continuous weft thread colors. When you put it out, the weft is stopped and you can prevent it from floating.

In the present invention, the computer 10 prevents the front weft from floating according to the flow chart shown in FIG.

In step 1, in order to check the floating state of the weft thread along the line in the weft direction from the organization chart of FIG. 4, the variable L is initialized and L = 1 is set, and step 2
At, the organization chart data of the L line is read. Further, in order to specify the weft thread color to be checked, the variable C corresponding to the weft thread color is initialized. The variable C is a value of 1 to 8 corresponding to the eight colors of the organization chart (for example, 1: white, 2: black, 3: red ...).

Then, the number of consecutive weft thread colors specified from the read data is calculated and checked (steps 4 and 5). This continuous number is checked by comparison with a predetermined floating prevention organization chart shown in FIG. 9. Here, the number of checks is set to a value corresponding to the X size of the floating prevention organization, that is, 6. Then, if the number of consecutive checks is greater than or equal to the number of checks, the process moves to step 6, the floating prevention organization is fitted, and if it is less than that, the process moves to step 7.

The fitting of this floating prevention structure is shown in FIG.
As shown in Fig. 4, the floating prevention structure is expanded to the same size as the structure chart of Fig. 4, and the weft color part where the number of consecutives is equal to or more than the check number, that is, the hatched area of (a) and the diagonal line of (b) In the portion where the floating prevention points filled in with are overlapped, the weft thread color is replaced with the warp thread color (for example, black) as shown in (c). It should be noted that the warp thread color appears where "warp" is displayed in (c).

In the case of FIG. 10, the floating prevention structure is applied to the second and fourth lines from the bottom, whereby the continuous weft threads are stopped at predetermined intervals by the warp threads as shown in FIG. You can That is, in the portion where the weft yarn is replaced with the warp yarn, the weft yarn is turned on the back side of the fabric, and the warp yarn is exposed on the surface. As a result, the weft yarns of the same color which have been continuously exposed on the surface are stopped by the warp yarns on the way. However, with respect to the first line, although the black warp yarns at the corners are located to be replaced with the warp yarns, one of the colored lines removes the fitting of the floating prevention structure to achieve the structural stability of the fabric.

The value of the number of checks of the continuous number can be freely changed according to the density of floating prevention, and the smaller the number of checks, the narrower the interval of floating prevention by warp threads.

Steps 7 to 11 are routines for repeating such a check of the floating state of the warp thread and fitting of the float prevention structure for each line L, and when it is judged in step 7 that the check of the L line is finished, it is checked. The color is changed to C = C + 1, the same operation is repeated, all colors are checked (steps 7 to 9), the line is moved to the next line (L = L + 1), and the same operation is repeated for all weft thread colors. Checking and fitting of the floating prevention organization are performed, and when this operation is executed for all lines, the process is finished (steps 10 and 11).

In this way, the weft floating prevention structure is fitted, the organization chart is corrected as shown in FIG. 10C, the weft allocation is corrected, and the conversion of the pattern paper data is performed based on this. To do. When the woven fabric is woven by the jacquard loom based on the pattern paper data, it is possible to woven the fabric without the lifting of the weft thread on the surface.

The continuous weft thread color may differ from the warp thread color in the replaced part (other than the weft thread of the same color as the warp thread), but there are few floating prevention points by this warp thread as shown in the figure, and The reproducibility of image data can be kept good as a whole.

In the above, the creation of the pattern paper data from the organization chart is well known, and thus the detailed description will be omitted.

[0030]

As described above, according to the present invention, when weft yarns of the same color are continuous on the surface of the fabric in the weft line direction,
The warp thread can stop the process, prevent the weft thread from floating from the surface of the fabric, prevent the weft thread from being caught or disturb the fabric surface, and improve the structural stability of the fabric.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an example of an array in order for pseudo-synthesizing an intermediate tone by a dither method.

FIG. 2 is an explanatory diagram showing a similar intermediate tone pattern.

FIG. 3 is an explanatory diagram showing an example of image data.

FIG. 4 is an explanatory diagram of an organization chart obtained by converting image data into color data of eight colors.

FIG. 5 is an explanatory view showing an ideal woven fabric surface woven according to the organization chart.

FIG. 6 is an explanatory diagram showing a floating state of the weft thread.

FIG. 7 is an explanatory diagram showing a state in which a weft yarn is prevented from floating by a warp yarn.

FIG. 8 is a flow chart showing a control operation of fitting of a weft floating prevention system according to the embodiment of the present invention.

FIG. 9 is an explanatory diagram showing an example of a floating prevention structure.

FIG. 10 is an explanatory diagram showing a fitting method of a floating prevention structure.

FIG. 11 is a block diagram showing a configuration of an exemplary embodiment of the present invention.

FIG. 12 is a claim correspondence diagram showing the configuration of the present invention.

[Explanation of symbols]

 21 Optical Reading Means 22 Organization Chart Creating Means 23 Weft Thread Color Assigning Means 25 Weft Thread Continuous Number Checking Means 26 Weft Thread Assigning Correcting Means

Claims (1)

[Claims] 1. A means for optically reading a photograph or the like as image data, and an organization chart of a predetermined matrix for pseudo reproduction with a limited number of colors in which an intermediate color tone is limited by a dither method based on the image data. Means, a means for allocating the limited number of weft thread colors in accordance with this organization chart, a means for comparing the continuous number of weft thread colors of the same color in each line of the weft thread allocation with a preset check number, and a continuous number A photographic weaving apparatus comprising: means for correcting the weft thread assignment so that the weft thread color is replaced with the warp thread color at a predetermined interval when the number of checks is greater than or equal to the number of checks.