JPH0788611B2 - 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 from pattern data optically read from photographs and the like.

[0002]

2. Description of the Related Art Conventionally, for example, when a woven fabric pattern to be woven by a jacquard loom is created based on a photograph, a printed matter, a painting, etc., a skilled engineer draws a design drawing from these photographs, and draws this design drawing. An organization chart is created by assigning an organization, and 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 such a problem caused by manual work, there is an attempt to create the above-mentioned design drawing by a computer. However, the finish is not always satisfactory, and in the situation where a skilled engineer needs rework, the assignment of the organization to create the organization chart from the design drawing is completely manual work.

[0007] Further, as a technique of pattern weaving using a computer, there is an idea that a woven fabric structure is created by digital processing from photographs etc. based on image editing by a computer, but there are many unclear points regarding the specific configuration and function, It is questionable not only for its practical value but also for its practical application.

The present invention was proposed in order to solve such a problem, and it is possible to automatically create a woven fabric structural chart based on pattern data optically image-processed, and further, warp yarns and weft yarns. It is an object of the present invention to provide a photo weaving device that does not require re-dying.

[0009]

In the present invention, as shown in FIG. 26, 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 this image data. A means 22 for creating an organization chart of a predetermined matrix that is reproduced in a pseudo manner according to the number of colors, a means 23 for allocating the limited number of weft thread colors according to this organization chart, and one weft thread coloring line on the weft thread allocation line. First correction means 24 for replacing the weft thread color with the warp thread color when the number of consecutive wefts is less than a predetermined value, and with a predetermined interval when the weft thread color of the same color continues more than a predetermined value in the weft thread allocation line. The second correction means 25 for replacing the weft thread color with the warp thread color, and the warp thread color replaced by the first correction means are continuous in the warp line for a predetermined value or more. And a third correction means 26 to replace the weft color warp color with a predetermined interval time.

Further, there is provided means 27 for selecting one of the weft thread colors as a warp thread color, and the first correction means 2 is provided.
4 is configured to replace the weft thread color with the warp thread color when the number of consecutive colors of the same color as the warp thread color is less than a preset predetermined value.

[0011]

The tissue chart including the intermediate color artificially created by the limited number of colors is created from the optically read image data. The weft thread colors are assigned based on this organization chart. The first correction is to replace a part of the weft thread with the warp thread, and the second and third methods are provided to prevent the weft thread from floating and the warp thread to float. Is corrected.

With the first correction, the amount of weft threads on the surface of the fabric,
The frequency of weft thread switching can be reduced, which eliminates the gap between the upper and lower rows in each weft thread line.
The warp thread passing through the back side can be prevented from appearing on the surface of the fabric, and the reproducibility of the image data can be improved.

In this case, by substituting the weft thread color which is the same color as the warp thread color, the image data can be faithfully converted.

By the second correction, when weft yarns of the same color are continuous on the surface of the fabric in the weft line direction, the warp yarns can stop the middle of the weft yarns and prevent the weft yarns from floating from the surface of the fabric. Similarly, when the warp yarns appearing on the surface of the fabric are continuously formed on the warp by the third correction, the warp yarns are stopped by the weft yarns and the warp yarns are not lifted.

[0015]

EXAMPLES Examples of the present invention will be described below.

In FIG. 1, 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 threads, fits the warp texture, prevents the weft threads and warp threads from floating, and creates pattern paper data.

This process is briefly shown in the flow chart of FIG. 2. In step 1, the warp density, the weft density, and the number of warp yarns are designated as data necessary for creating a woven fabric structure chart, and the woven fabric specification is determined. Set.

In step 2, the size of the image data is changed. As will be described later, here, the image data read by the color scanner 11 is adjusted in accordance with the specifications of the fabric to adjust the number of pixels of the warp. Furthermore, in step 3, a tissue chart is created by the dither method based on the image data, a part of the weft thread color is replaced with the warp thread color from this tissue chart, and when the weft threads of the same color continue, the weft thread floats. The prevention and the floating of the warp thread, which occur when the warp thread color replaced with the weft thread color continues, are performed (steps 4 to 4).
6).

To explain these in more detail,
First, the size of the image data is changed. As shown in FIG. 3, by adjusting the ratio of the vertical warp of the unit pixel of the image data read by the color scanner 11 according to the fabric specification, the read image data is read. The ratio of horizontal (X) and vertical (Y) of one pixel is 1: 1. However, in the organization chart of the woven fabric, from the relationship between the warp yarn density and the weft yarn density, 1
The ratio between the horizontal (X) and vertical (Y) pixels is not limited to 1: 1 and may be 1: 3 as shown in FIG. 4, for example. When the organization chart is created without taking this ratio into consideration and the fabric is woven, the pattern of the fabric is stretched or shrunk compared to the image data (see FIG. 5). Further, the number of horizontal (X) lines in the organization chart is also limited depending on the fabric specifications.

Therefore, it is necessary to change the number of pixels of the image data to the number of pixels that meet the fabric specification before creating the organization chart.

The method of calculating the number of pixels that meets the textile specifications is shown below. Now, assuming that the number of horizontal pixels is X2 and the number of vertical pixels is Y2, which is in accordance with the fabric specification, X2 = TH = (900 pixels) Y2 = Y * TH * DY / (X * DT) = (316 pixels) .

However, X: number of horizontal pixels of image data (3
80 pixels) Y: Number of warp pixels of image data (400 pixels) DT: Warp thread density (180 threads / inch) DY:
Weft thread density (60 threads / inch) TH: Number of warp threads (9
(00 lines) Round down the decimal point so that Y2 is even. In this way, if the number of pixels of the warp and the warp is determined according to the specifications of the fabric, the ratio of the warp and the pattern of the image data corresponds well when the fabric is woven.

Next, an organization chart is created based on the dither method. As a general rule, the pattern of image data is reproduced by the color of the weft thread and the intermediate color tone. Therefore, according to the dither method, for example, as shown in FIG. An array indicating the order in which the colors (dots) required to obtain the gradation of is printed is determined. FIG. 7 shows an example of the pseudo intermediate tone pattern obtained by this, and shows (2), (6) and (10) of FIG.

As an example, the array obtained by converting the image data of FIG. 8 into color data of eight colors by the dither method is as shown in FIG. 9, 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.

By the way, assuming that FIG. 9 is a woven fabric organization chart, weft threads of eight colors are assigned to all the matrices, and the pattern paper data is created based on this, and the pattern paper data created in this way is used. When the woven fabric is woven according to the above, assuming that the image data can be ideally reproduced, the result is as shown in FIG. In FIG. 10, wefts of eight colors are arranged according to FIG.

However, in the woven fabric, the weft threads and the warp threads are interlaced,
The weft thread of the required color is pulled out from the back side so that only the weft thread comes out on the surface of the fabric, passes through the warp thread's front side for the specified number of lines in the warp row, and then returns to the back side. When the color weft threads are frequently switched, the different color weft threads do not line up in a straight line with respect to the weft line, but slightly shift up and down.

FIG. 11 shows this, and warp yarns that should not normally come out to the front side appear between the lines that are slightly shifted vertically, as shown by the shaded area in the figure. For example, in the eighth column from the bottom in FIG. 9, switching is performed six times from the right, white → black → white → black → yellow → white → black (however, continuous portions of the same color are the same). Therefore, weft yarns of different colors are drawn out from the back side one after another, and the weft yarns that should be aligned in a straight line are displaced as shown in FIG. 11, and a gap is formed between this portion and the upper and lower lines.
When a black or white warp yarn is visible on the surface through this gap, the actually woven fabric has a color tone greatly different from that of the image data shown in the organization chart of FIG.

This is also because the color of the weft threads is frequently switched in each line, and the amount of weft threads appearing on the surface of the fabric is too large.

As a countermeasure against this, among the weft yarns that reproduce the color of the image data, the warp yarns of the same color are used to replace some of the weft yarns, and the weft yarn amount and the weft yarns appearing on the surface of the fabric are changed. It is possible to reduce the number of lines, prevent gaps between lines, and faithfully reproduce image data.

Therefore, the warp threads are replaced with the weft threads, that is, the "warp-out design" is fitted in accordance with the flowchart of FIG.

To explain this, in step 1, the warp thread color is set, and as the warp thread color set at this time,
One of the eight weft threads is selected, but black or white, which appears the most in the organization chart, is desirable.
Hereinafter, description will be made assuming that C = black is selected as the warp thread color. In order to check the horizontal row (L line) of the organization chart in order from the bottom, set L = 1 in step 2,
The organization chart data of the L-th line is read from the organization chart of FIG. 4 (step 3).

Then, in step 4, C on the L line is
A continuous number of colors, that is, the same black color as the warp thread color is calculated, and this is compared with a preset number of checks (step 5). The value of the number of checks is obtained in advance by a weaving experiment, and the number of checks = 4 is set in this embodiment. If the number of continuous weft thread colors is less than the number of checks, apply the "vertical structure" in step 6,
Warp threads are used instead of weft threads, but when the number of checks is greater than the number of checks, fitting is not performed. For example, the black color on the first line in FIG. 9 has 6 consecutive numbers and 4 or more check numbers,
The fitting of the "tissue structure" is not performed, but the black line on the 5th line has a continuous number of 1 and 3 and is less than the check number of 4, so the "tissue structure" is applied.

In addition, the reason why the number of continuous warp fittings is less than the check number is that the weft thread is switched more frequently when the number is less than the check number. By replacing this with warp thread, the weft thread can be switched. This is because it can be prevented from being performed frequently, and by setting it to less than the check, it is possible to prevent all the weft yarns of the same color as the warp yarns from being replaced with the warp yarns. The number of checks can be freely changed as needed.

By fitting "warp-out structure", one warp thread color is added to the eight-color weft thread structure chart, so that the eight-color organization chart is formally converted to a nine-color organization chart. However, since the warp threads are actually black, eight colors are used as the fabric. In the 5th line of FIG. 9, the black portion is entirely replaced with the warp thread color.
It becomes like 3. The warp thread color is designated for the portion shown as "warp" in the drawing.

In step 7, it is confirmed whether or not the check of the L line is completed. When the check of the L line is completed, the process goes to step 8 to set L = L + 1, and the next line is checked through step 9 to finally Repeat the above operation until all lines have been checked.

In this way, the fitting of the "warp-out structure" to the structure chart of Fig. 9 is completed, and the structure chart of Fig. 14 is obtained. Based on this, the "warp" portion is replaced with the weft thread. The combination of weft and warp threads will be adjusted so that the warp threads appear on the surface of the fabric.

With the above-mentioned adjustment, in FIG.
While weft yarn was 00%, in Fig. 14 it was 30%.
Warp warp and 70% weft. In addition, the frequency of switching the weft thread color on the same line is also reduced, and by the way, in the case of the eighth line, which has been switched six times in FIG. 9, it is reduced to three times of white → yellow → white in FIG.

As a result, the actual surface of the woven fabric is as shown in FIG. 15, the gaps between the upper and lower rows of the weft yarns are eliminated, the warp yarns do not appear in the gaps, and the warp yarns replaced by the weft yarns are not formed. Since it is the same as the weft thread color originally supposed to be placed there, the color of the fabric surface is as shown in the organization chart of FIG. 9 created based on the read image data.
This is in agreement with the ideal weave pattern indicated by 0.

On the other hand, as can be seen from the fourth line from the bottom in FIG. 9, eight red lines continue in a row, and in this portion, the weft threads float from the surface of the fabric. If the weft yarn floats in this way, it may cause the weft yarn to be caught or the surface of the fabric to be disturbed.

FIG. 16 shows such a structure.
If the same weft thread color is continuous on the line, the weft thread easily separates from the surface of the fabric, and if the warp thread is brought out to the surface in the middle of the continuous weft thread color, the weft thread is stopped and floating can be prevented.

Therefore, the floating of the front weft thread is prevented according to the flow chart shown in FIG.

In step 1, in order to check the floating state of the weft yarn along the line in the weft direction from the organization chart of FIG. 9, the variable L is initialized and L = 1 is set. Read organization chart data. Also,
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 8 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. 19. Here, the number of checks is a value corresponding to the X size of the floating prevention organization,
That is, 6 is set. 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. 9, the floating prevention structure is developed to the same size as the structure chart of Fig. 9, and the weft color part in which the number of continuous inspections is equal to or more than the check number, that is, the hatched area in (a) and the diagonal line in (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). In addition, in (c),
The warp thread color appears where "warp" is displayed.

In the case of FIG. 20, the floating prevention structure is fitted to the second and fourth lines from the bottom, and as a result, as shown in FIG. 7, the continuous weft threads are stopped at predetermined intervals by the warp threads. 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. 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 lifting prevention system is fitted to correct the weft pattern as shown in FIG. 20 (c) and correct the weft allocation to prevent the weft system from floating on the surface of the fabric.

Although the continuous weft thread color may be different in the part replaced with the warp thread color (other than the weft thread of the same color as the warp thread), 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.

By the way, the floating prevention of the yarn is also applied to the warp yarn which is replaced with a part of the weft yarn by the fitting of the above-mentioned "warp-out structure".

The warp threads substituted for part of the weft threads are shown in FIG.
As you can see by looking at the 5th line from the right of 4,
Six warp thread colors continue on one line. When the warp yarns are continuous in this way, the warp yarns at this portion float from the surface of the fabric, as in the case of the weft yarns, causing the warp yarn to be caught or disturb the surface of the fabric.

FIG. 21 shows such a structure.
When the warp thread color is continuous on the line, the warp thread is likely to separate from the surface of the fabric. Therefore, as shown in FIG. 22, when the weft thread is taken out on the surface in the middle of the continuous warp thread color, the warp thread is stopped,
Floating can be prevented.

Therefore, in order to perform such processing, the computer 10 prevents the warp of the warp yarn from floating according to the flowchart shown in FIG.

In step 1, from the organization chart of FIG.
In order to check the floating state of the warp threads on the line in the warp direction, L = 1 is set, and in step 2, the organization chart data of the L line is read.

Then, the number of continuous warp thread colors is checked from the read data (step 4). This continuous number is checked by comparison with a predetermined floating prevention organization chart shown in FIG. 24. Here, the number of checks is set to a value corresponding to the Y size of the floating prevention organization, that is, 4. Then, if the number of consecutive checks is greater than or equal to the number of checks, the process moves to step 5, and the floating prevention organization is fitted, and if it is less than the process moves to step 6.

The fitting of this floating prevention structure is shown in FIG.
As shown in FIG. 14, the floating prevention structure is developed to the same size as the structure chart of FIG. 14, and the warp thread color portion where the continuous number is equal to or more than the check number, that is, the hatched area in (a) and the diagonal line in (b). It is to replace the overlapping portion of the floating prevention points filled in with the weft thread color (black) with the same color as the warp thread color, as shown in (c).

In the case of FIG. 25, the floating prevention structure is fitted to the fifth vertical line from the right, whereby the continuous warp threads can be stopped at predetermined intervals by the weft thread as shown in FIG. . In other words, in the part where the warp thread is replaced with the weft thread, the black weft thread is pulled out from the back side of the fabric to the surface, passes through the surface of the warp thread and is drawn back to the back side again, so the warp thread that has continuously appeared on the surface is It is covered with weft threads on the way and stopped.

The number of checks of the continuous number can be set freely according to the density of floating prevention, and the smaller the number of checks, the narrower the interval of floating prevention by the weft thread.

Steps 6 to 8 are routines for repeating such a check of the floating state of the warp thread and fitting of the floating prevention structure for each warp line, and are completed when this operation is executed for all the lines.

By the way, in order to prevent the warp thread from floating, the weft thread color for stopping the float is made to be the same color as the warp thread, so that the color of the pattern on the surface of the fabric can be matched exactly with the image data.

In this manner, the floating weft and warp threads are prevented from being lifted up, and the structure is fitted, as shown in FIGS.
The organization chart is corrected in accordance with the correction content of (c). The modified synthetic organization chart is shown in FIG.
Based on the above, it can be created by replacing only the portion displayed as “vertical” in FIG.

Then, based on this, the above-mentioned weft thread allocation is corrected, and conversion of the pattern paper data is performed.
When a woven fabric is woven by a jacquard loom based on this pattern data, it is possible to woven a fabric that is faithful to the image data of FIG. 9 and has no weft or warp on the surface of the fabric.

Since the creation of pattern paper data from the organization chart is well known, detailed description will be omitted.

[0064]

As described above, according to the present invention, it is possible to automatically create a woven tissue structure chart based on the read image data without the need for correction by a skilled worker as in the prior art. In addition, since the organization chart can be created after the colors of warp and weft threads are limited in advance, there is no need to select colors for warp or weft threads and redone dyeing. The process for this is greatly simplified.

Further, by replacing a part of the weft thread with the warp thread, the gap between the upper and lower sides of the weft thread is eliminated, and the pattern of the image data can be faithfully reproduced on the woven fabric. As a result, it is possible to improve the quality of the woven fabric and the structural stability of the woven fabric by eliminating the thread jamming and the disorder of the woven fabric surface.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a flowchart showing an overall control operation.

FIG. 3 is an explanatory diagram showing reproducibility of image data size.

FIG. 4 is an explanatory diagram showing a change in image data size.

FIG. 5 is an explanatory diagram showing an example of image data size conversion.

FIG. 6 is an explanatory diagram showing an example of an array in order for pseudo-synthesizing an intermediate tone by the dither method.

FIG. 7 is an explanatory diagram showing a similar intermediate tone pattern.

FIG. 8 is an explanatory diagram showing an example of image data.

FIG. 9 is an explanatory diagram of an organization chart in which image data is converted into color data of eight colors.

FIG. 10 is an explanatory view showing an ideal woven fabric surface woven according to the organization chart.

FIG. 11 is an explanatory view showing a woven fabric surface actually woven according to the organization chart.

FIG. 12 is a flowchart showing a control operation of fitting a vertical organization.

FIG. 13 is an explanatory diagram showing an example of a color arrangement corrected by fitting a projected tissue.

FIG. 14 is an explanatory diagram showing an organization chart corrected by fitting a projection organization.

FIG. 15 is an explanatory view showing a woven fabric surface according to the corrected organization chart.

FIG. 16 is an explanatory diagram showing a state in which a weft thread is floating.

FIG. 17 is an explanatory diagram showing a state in which the weft yarn is prevented from floating by the warp yarn.

FIG. 18 is a flow chart showing a control operation for fitting a weft floating prevention system.

FIG. 19 is an explanatory diagram showing an example of a floating prevention structure.

FIG. 20 is an explanatory diagram showing a step of fitting a weft floating prevention structure.

FIG. 21 is an explanatory diagram showing a state where warp threads are floating.

FIG. 22 is an explanatory diagram showing a state in which the warp yarn is prevented from floating.

FIG. 23 is a flowchart showing a control operation of fitting a warp floating prevention structure.

FIG. 24 is an explanatory diagram showing an example of a floating prevention structure.

FIG. 25 is an explanatory diagram showing a step of fitting a warp floating prevention structure.

FIG. 26 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 24 First Correcting Means 25 Second Correcting Means 26 Third Correcting Means 27 Warp Thread Color Selecting Means

Claims (2)

[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. And a means for allocating the limited number of weft thread colors in accordance with this organization chart, and a weft thread color with a certain weft thread color on the weft thread allocation line, when the continuous number is less than a predetermined value, the weft thread color is replaced with the warp thread color. The first correction means, the second correction means for replacing the weft thread color with the warp thread color at a predetermined interval when the weft thread colors of the same color continue for a predetermined value or more on the weft thread allocation line; A third correcting hand for replacing the warp thread color with the weft thread color at a predetermined interval when the warp thread color replaced by the correction means continues for a predetermined value or more in the warp line. A photo weaving device, which is provided with a step. 2. A means for selecting one of the weft thread colors as a warp thread color, wherein the first correction means has a continuous number of the same color as the warp thread color of the weft thread colors is less than a preset predetermined value. The photographic weaving apparatus according to claim 1, wherein the weft thread color is sometimes replaced with the warp thread color.