JP2002221781A - Manufacturing method and device for hair line pattern - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method and device for a hair line pattern which does not make multiple hair line clearances be concentrated. SOLUTION: After arranging a hair line and hair line clearance for a referred drawing line (step S4), the hair line clearance arranged in the referred drawing line is determined to have a adjacent relation with the hair line clearances of the determined drawing lines arranging hair lines and hair line clearances so far or not (step S5). This determination is done by checking the hair line clearance of the referred drawing line overlaps the hair line clearance of the determined drawing line including the range of the designated threshold or not. If all hair line clearances of the referred drawing line have no adjacent relation with all hair line clearances of the determined drawing lines, the referred drawing line is made to be a determined drawing line. If there is a hair line clearance which has an adjacent relation with the hair line clearances of the determined lines, the generation and arrangement of the hair line and hair line clearance for the referred drawing line is redone.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for creating a hairline pattern.

[0002]

2. Description of the Related Art Hairline patterns are widely used for printing or embossing construction materials such as wallpaper and flooring materials. The hairline pattern is a pattern composed of a set of many thin lines (hairlines) extending along one specific direction. The hairline pattern may also be referred to as a line pattern, but will be unified with the hairline pattern in this specification.

Various methods are known as a method for creating a hairline pattern. As one of them, there is a method in which a designer draws each hairline manually by using a ruler and a crow mouth. There is also a method of creating a hairline pattern by a computer, as proposed by the present applicant.

[0004]

However, in the method of manually creating a hairline pattern, it is extremely difficult to obtain a stable and clear hairline pattern, and it is also difficult to correct a work error. Difficult to design with variations.

According to the method of creating a hairline pattern using a computer, it is possible to create a clear hairline pattern in a short time, but since the hairlines are arranged at random, the gaps between the hairlines are concentrated. In some cases, unevenly distributed portions appear, and the portions where the gaps of the hairlines are concentrated appear as a whole with a density change that appears uneven.

This will be explained as follows. As described above, the hairline pattern is a set of hairlines extending in one specific direction. Here, it is assumed that the hairlines extend in the horizontal direction in the drawing. That is, it is assumed that the longitudinal direction of the hairline is the horizontal direction in the figure.

[0007] First, a gap between hairlines is defined. In this specification, the gap between hairlines refers to a gap between hairlines that are adjacent to each other in the longitudinal direction. FIG. 8A is an enlarged view of two hairlines A and B adjacent to each other in the longitudinal direction. A gap S between the right end of the hairline A and the left end of the hairline B is a gap between the hairlines. . Note that the gap between the hairlines may be simply referred to as a hairline gap.

When a hairline pattern is created by using a computer, the hairlines are arranged at random, so that a case as shown in FIG. 8B appears locally.
FIG. 8B shows a three-stage hairline, in which a gap between two upper hairlines, a gap between two middle hairlines, and a gap between two lower hairlines is formed. focusing. The fact that a plurality of hairline gaps are concentrated in this way, in this specification, the gaps are adjacent,
Alternatively, it is referred to as the presence of a gap.

As shown by a broken-line circle in FIG. 8B, when printing or embossing is performed using a hairline pattern having portions where gaps are adjacent to each other, the gaps are adjacent to each other. The part looks uneven as a whole. Thus, it is not desirable that there is a portion that looks uneven when printed or embossed using a hairline pattern.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method and an apparatus which can create a hairline pattern having no adjacent space in a relatively short time.

[0011]

According to a first aspect of the present invention, there is provided a hairline pattern creating method, comprising the steps of:
The process of generating and arranging the hairline gap, and the hairline of the attention drawing line where the hairline and the hairline gap were generated and placed this time, the hairline of the determined drawing line where the hairline and the hairline gap were generated and arranged so far Determining whether or not the gap is adjacent to the gap. In the hairline pattern creation method according to the second aspect, in the first aspect, the determination as to whether or not there is an adjacent relationship includes determining whether a hairline gap of a drawing line of interest and a hairline gap of a determined drawing line are equal to a specified threshold value. It is characterized in that the determination is performed depending on whether or not they overlap each other including the range. In the hairline pattern creating apparatus according to the third aspect, a hairline generating and arranging means for generating and arranging a hairline and a hairline gap in a drawing line allocated in a created image, and a hairline and a hairline gap are generated and arranged this time. Each hairline gap of the drawing line of interest includes at least a gap adjacency determining unit that determines whether or not the hairline and the hairline gap have been generated so far and are in an adjacent relationship with the hairline gap of the arranged determined drawing line. And In the hairline pattern creation device according to a fourth aspect, in the third aspect, the gap adjacent determination unit overlaps the hairline gap of the drawing line of interest and the hairline gap of the determined drawing line, including the range of the specified threshold value. It is characterized in that it is determined whether or not there is an adjacency relationship based on whether or not there is an adjacency.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. In the following description, the hairlines are arranged in the horizontal direction in the figure. FIG. 1 is a diagram showing an embodiment of a hairline pattern creating apparatus according to the present invention, wherein 1 is an input unit, 2 is a hairline drawing line allocating unit, 3 is a hairline generating and arranging unit, and 4 is a gap adjacency determining unit. Reference numeral 5 denotes hairline drawing means, and reference numeral 6 denotes output means. The hairline pattern creation device shown in FIG. 1 can be configured by a computer system. That is, the input means 1 can be constituted by a keyboard and a pointing device, and the output means 6 can be constituted by an external storage device such as a display device, a printer, a film output device, or a hard disk device. The means 2, the hairline generation / arrangement means 3, the gap adjacent determination means 4, and the hairline drawing means 5 are C
The control apparatus including the PU can be configured by installing software for performing the processing described below.

First, the outline of each part of the configuration shown in FIG. 1 will be described. (1) Input Means 1 The input means 1 is for inputting values of various parameters for creating a hairline pattern. Here, at least the values of the following parameters are input. -Created image size (width: width, height: height)-Hairline width (maximum value wmax: minimum value: wmin)-Hairline length (maximum value: lmax, minimum value: lmin)-Hairline gap (maximum value: spmax, minimum value: spmi
n) ・ Line spacing (maximum value: hmax, minimum value: hmin) ・ Hairline fluctuation (wavelength: λ, amplitude: A) ・ Gap adjacency judgment condition 1 (adjacent distance threshold: thr) ・ Gap adjacency judgment condition 2 (gap adjacency) Number of hairline drawing lines to be judged: m)

The meanings of these parameters are as follows. The creation image size is the size of the hairline pattern to be created, and the width value width and the height value height are input. The hairline width is a parameter for determining the width of each hairline, and a maximum value wmax and a minimum value wmin of the hairline width are input. The hairline length is a parameter for determining the length of each hairline, and a maximum value lmax and a minimum value lmin of the hairline length are input. The hairline gap is a parameter for determining the length of each hairline gap, and the maximum value spmax and the minimum value spmin of the hairline gap are input.

The line spacing is as follows. As will be described later, a hairline drawing line (hereinafter, sometimes simply referred to as a drawing line) which is a region where a hairline is drawn is provided in the created image, and the drawn line is arranged in the height direction of the created image. Instead of being provided continuously, a gap is provided between a drawing line and the next drawing line. This gap is a line interval, and the maximum value hmax and the minimum value hmi of the line interval
Enter n.

The hairline fluctuation is as follows. As will be described later, in this hairline creation method, each hairline is first created as a horizontally long rectangle, and the hairline is deformed when the hairline is finally drawn to have fluctuation. A parameter for giving the hairline fluctuation is hairline fluctuation, and the wavelength λ and amplitude A of the fluctuation are input.

The gap adjacency determination condition 1 is such that the hairline gap in the drawing line to be created now (hereinafter, the drawing line to be created is defined as the drawing line of interest) and the arrangement of the hairline so far are determined. This parameter is used to determine whether or not all hairline gaps of a drawing line (this drawing line is defined as a drawing line) are adjacent to each other. I do. The determination of the adjacent hairline gap will be described later in detail.

The gap adjacency determination condition 2 is to determine how many lines before the hairline gap in the drawing line of interest and all the hairline gaps in the determined drawing line are determined to be adjacent to each other. It is a parameter to be determined, and the number of drawing lines m
Enter For example, if it suffices to determine the adjacency relationship between the determined drawing line immediately before the drawing line of interest and the hairline gap, m = 1 may be input. Parameters other than the above parameters will be described each time.

(2) Hairline drawing line allocating means 2 The hairline drawing line allocating means 2 allocates drawing lines in a created image based on the parameters input by the input means 1. At this time, the line interval is allocated between the drawing lines as described above.

(3) Hairline generating and arranging means 3 The hairline generating and arranging means 3 performs one-by-one drawing lines of interest based on the parameters inputted from the input means 1.
The width and length of the book hairline and the length of each hairline gap are determined and arranged. When arranging the generated hairline and the hairline gap in the drawing line, the hairline and the hairline gap are alternately arranged in the longitudinal direction of the hairline to match the width of a given created image.

(4) Adjacent gap determining means 4 The adjacent gap determining means 4 is based on the position of each hairline gap of the drawing line of interest generated by the hairline generating and arranging means 3 and the position of each hairline gap of the determined drawing line. ,
It is determined whether or not each hairline gap of the drawing line of interest is adjacent to all the hairline gaps of the determined drawing line. Although it is described later when the hairline gap is determined to have the adjacent relationship, the parameters of the gap adjacent determination conditions 1 and 2 are used in determining the adjacent relationship.

If at least one of the hairline gaps of the drawing line of interest has a hairline gap that is adjacent to the gap of the determined drawing line, the gap adjacency determination means 4 sends the hairline generation and placement means 3 Notification that there is an adjacent relationship. Upon receiving this notification, the hairline generation and placement means 3
Performs a process for newly calculating the length, width, length of hairline gap, and the position of each hairline for the drawing line of interest. Then, the data on the position of the hairline gap of the drawing line of interest newly obtained is passed again to the gap adjacency determining means 4, and the adjacency relationship with the hairline gap of the determined drawing line is determined.

In this manner, the attention drawing in the hairline generating and arranging means 3 until the gap adjacency judging means 4 determines that all the hairline gaps in the drawing line of interest are not adjacent to any of the hairline gaps in the determined drawing line. Generation of hairlines and hairline gaps for rows,
The arrangement is repeated, and when the gap adjacency determining means 4 determines that all the hairline gaps of the drawing line of interest are not adjacent to any of the hairline gaps of the determined drawing line, the hairlines and the hairline gaps of the drawing line of interest are determined. The arrangement is determined and the determined drawing line is obtained, and the next drawing line is the target drawing line.

(5) Hairline Drawing Means 5 When all the drawing lines allocated to the created image are determined drawing lines, the hairline generating and arranging means 4 outputs the respective hairlines for all the determined drawing lines. The hairline is drawn on a memory space having an area of the size of the created image in which the parameters are input, in response to the data of the width, length, and position of the hairline. When drawing each hairline, deformation and fluctuation are imparted to the hairline as described above. As a result, a hairline pattern is created. It should be noted that the application of the deformation and the fluctuation to the hairline is not the essence of the present invention, and a known method may be used.

(6) Output Means 6 The output means 6 is for outputting the hairline pattern drawn by the hairline drawing means 5, and comprises a display device, a printer, or a film output device as described above. And a direct printing plate apparatus. Further, the output unit 6 may be an external storage device such as a hard disk device.

Next, the operation of the hairline pattern creating apparatus shown in FIG. 1 will be described together with the processing procedure of the hairline pattern creating method shown in FIG. First, the operator inputs at least the above parameter values using the input means 1 (step S1). The value of each parameter or the maximum value and the minimum value are arbitrary.

The value of the parameter input from the input means 1 is notified to the hairline drawing line allocating means 2, the hairline generating and arranging means 3, the gap adjacent judging means 4, and the hairline drawing means 5. Specifically, it is as follows. The hairline drawing line allocating means 2 has a height (heigh
t), hairline width maximum value wmax, line spacing (maximum value:
hmax, the minimum value: hmin), and the amplitude A of the hairline fluctuation are notified. The hairline generation and arrangement means 3 includes a width (width) of the created image size and a hairline length (maximum value:
lmax, minimum value: lmin) and hairline gap (maximum value: spmax, minimum value: spmin) are notified. The gap adjacency determination unit 4 is notified of the gap adjacency determination condition 1 (adjacent distance threshold: thr) and the gap adjacency determination condition 2 (the number of hairline drawing lines for performing the gap adjacency determination: m). The hairline drawing means 5 is notified of the created image size (width: width, height: height) and hairline fluctuation (wavelength: λ, amplitude: A).

When the hairline drawing line allocating unit 2 receives the predetermined parameter value from the input unit 1, the hairline drawing line allocating unit 2 allocates a drawing line to the area of the created image (step S2). This processing is specifically performed as follows. First, the width G of the drawing line is obtained by the following predetermined arithmetic expression. G = wmax + A (1) That is, the width G of the drawing line is the same for all drawing lines. As will become clear from the description below, wmax
By adding A to the hairline, it is possible to prevent the hairlines of adjacent drawing lines from intersecting even when the hairline is fluctuated.

The hairline drawing line allocating means 2 calculates the n-th line interval Hn provided between the n-th drawing line and the next (n + 1) -th drawing line by the following equation. I do. Hn = hmin + RND.times. (Hmax-hmin) (2) where RND is a random number uniformly distributed in the range of 0-1. This is the same in the following. Therefore, the n-th row interval Hn is in the range of hmin to hmax.

In this manner, the line spacing is calculated one after another, and assuming that Hsum = n × G + H1 + H2 +... + Hn-1 (3), hmin <height−Hsum <hmax (4) Finish generating the remaining intervals (he
ight-Hsum) as the n-th line interval. Thus, the assignment of the drawing line is successful.

Then, as shown in FIG. 3, the first drawn line, the first line interval, the second drawn line, and the second line from the upper end of the created image in the height direction. Intervals:... Draw lines and line intervals are alternately arranged, such as the n-th drawing line and the n-th line spacing. Thus, the process of step S2 ends.

In the process of step S2, in practice, the width and the line interval of the drawing line are sufficiently smaller than the height of the created image. 4) It may be determined whether or not the expression is satisfied. If the expression (4) is satisfied, the generation of the line interval is terminated, and if (height−Hsum)> hmax, the next line interval is generated to determine whether or not the expression (4) is satisfied. Is repeated. However, if hmin> (height−Hsum), it is a failure, and the process is repeated from the generation of the first line interval.

Then, the hairline drawing line allocating means 2
When the assignment of the drawing lines is successful, the value of the width G of the drawing lines and the value of the width Hn of each line interval are notified to the hairline generation / placement means 3 and the hairline drawing means 5.

When the hairline generating and arranging means 3 receives the value of the width G of the drawing line and the value of the width Hn of each line interval from the hairline drawing line allocating means 2, it first sets the drawing line of the first line as the target line. The processing of generating and arranging the hairline is performed (step S3).

In the process of step S3, first, the length l1 and the width w1 of the first hairline are determined. The method of determining the length and width of the hairline is the same for all hairlines. , The width wn and length ln of the n-th hairline are determined by the following equations. wn = wmin + RND × (wmax−wmin) (5) ln = lmin + RND × (lmax−lmin) (6) Therefore, the width of all hairlines is in the range of wmin to wmax, and the length of all hairlines is lmin. ~ Lmax.

When the width and length of the first hairline are determined in this manner, the hairline generating and arranging means 3 outputs the first hairline.
The length sp1 of the hairline gap is determined. The method of determining the length of the hairline gap is the same for all hairline gaps. Generally speaking, the length spn of the nth hairline gap is determined by the following equation. spn = spmin + RND × (spmax−spmin) (7) Hereinafter, the width and length of the second hairline are determined in the same manner, and the length of the second hairline gap is determined. Determine the width and length of the hairline and the length of the hairline gap.

Then, when the width wn and the length l1 of the n-th hairline are determined, assuming that lsum = l1 + sp1 + l2 + sp2 +... + Spn-1 + ln (8), spmin <width-lsum <spmax (9) Is determined, and if it is established, the remaining length (width-lsum) is set to the length ln of the n-th hairline gap. Thus, a hairline and a hairline gap to be arranged on the first drawing line are generated.

The hairline generating and arranging means 3 comprises (9)
When it is determined whether or not the expression holds, (width−lsum
)> Spmax, the length of the next hairline gap spn and the width and length of the next (n + 1) th hairline are determined to determine whether or not the expression (9) is satisfied. repeat. However, if spmin> (width-lsum), it is a failure, and the processing is repeated from the determination of the width and length of the first hairline.

After the hairline generation and arrangement means 3 generates the width and length of the hairline and the length of the hairline gap for the first drawing line in this way, the hairline and hairline gap Are arranged in the drawing line of interest. When arranging the hairline and the hairline gap, first, the position of the first hairline in the drawing line of interest is determined by the following equation. x = RND × width (10) Here, x indicates the distance from the longitudinal direction of the created image, that is, one end in the longitudinal direction of the hairline to be arranged, to the start point of the first hairline. Here, it represents the distance from the left end of FIG.

When the start point of the first hairline is determined in this way, the hairline generation and placement means 3 places the first hairline from a position at a distance x from the left end of the created image, and places the first hairline on the first hairline. From the right end of the hairline, the first hairline gap is arranged in the longitudinal direction by the length of sp1, and the second hairline is arranged from the right end of the first hairline gap. Are alternately arranged in the longitudinal direction of the hairline, that is, in the width direction of the created image, up to the last hairline gap. FIG. 4A is a diagram conceptually showing such an arrangement of hairlines and hairline gaps.

However, at this time, the hairline and / or the hairline gap may protrude from the right end of the created image. FIG. 4B is a diagram conceptually showing the example. In this case, a part of the n-th hairline HAn and the n-th hairline gap HSn protrude from the created image.

The hairline generating and arranging means 3 allocates the portion protruding from the created image to the opposite side of the created image, in this case, to the left end of the created image. In this case, the width of the hairline assigned to the left end of the created image is not changed. Therefore, the protruding portion shown in FIG. 4B is allocated to the left end of the created image. FIG.
(C) is a diagram conceptually showing this processing. FIG. 4 (c)
In FIG. 4, the portion indicated by HAn 'is a portion that protrudes from the image of the hairline HAn shown in FIG. Therefore, assuming that the length of the n-th hairline HAn in FIG. 4 (b) is In and the length of the portion of the hairline HAn that does not protrude from the image is In ', FIG.
The length of the hairline HAn 'in (c) is (ln-ln').

When the portion protruding from the created image is assigned to the opposite side, the hairline generating and arranging means 3 renumbers the hairline and the hairline gap from the left end of the created image. Therefore, in the case of FIG.
The hairline indicated by HAn 'in the figure is the first hairline, the hairline gap indicated by HSn in the figure is the first hairline gap, and the hairline indicated by HA1 in the figure is the second hairline. You. Less than,
The same is true. As a result, the hairline protruding from the right end of the created image and allocated to the left end side and the hairline remaining at the right end of the created image are recognized as separate hairlines.

Although the case where the hairline protrudes from the created image has been described above, the same applies when the hairline gap protrudes.

As described above, the start point of the first generated first hairline is determined at random, and the portion protruding from the end of the created image is allocated to the opposite side, so that the created image has the hairline extended. When the operation is repeated without a gap in the direction, that is, in the horizontal direction in FIG. 3, the joint can be prevented from being conspicuous. That is, by performing the above-described processing, a so-called seamless operation is achieved.

When the generation of the hairline and the hairline gap for the first drawing line and the arrangement thereof are completed by the above processing, the hairline generating and arranging means 3 sets this drawing line as the determined drawing line, and The hairline drawing unit 5 is notified of the data of the width and length of each hairline arranged on the drawing line of the eye and the position of the start point thereof. The positions of the start point and end point of each hairline gap arranged in the drawing line are notified.

Here, the positions of the start point and end point of the hairline and the hairline gap are determined at an appropriate position in the created image, and refer to the distance in the width direction from the reference point. Here, the left end of the created image is set as a reference point, and the distance in the width direction of the created image from the reference point is represented. The unit of the distance is arbitrary, and may be, for example, the number of pixels.

Then, the hairline generating and arranging means 3 performs the processing of generating and arranging the hairline with the next drawing line, in this case, the second drawing line as the drawing line of interest (step S4). The processing in step S4 is the same as step S4 described above.
Same as 3, but when the generation of hairlines and hairline gaps for the drawing line of interest and their placement are completed, it is tentatively determined to be the starting point of each hairline gap arranged in the drawing line of interest. The data of the position of the end point is notified to the gap adjacent determination means 4.

Upon receiving this, the gap adjacent determination means 4
It is determined whether or not each hairline gap of the drawing line of interest has an adjacent relationship based on the positional relationship with each hairline gap of the determined drawing line. This is the gap adjacent determination in step S5 in FIG. Here, when a certain hairline gap arranged in the drawing line of interest and a certain hairline gap arranged in the decided drawing line are adjacent to each other, the hairline gap of the drawing line of interest and the hairline gap of the decided drawing line are: It means that it overlaps including the range of the specified threshold thr.

The details are as follows. Here, it is assumed that m = 1 in the gap adjacent determination condition 2. Now, it is assumed that the drawing line of interest is the k-th drawing line, and attention is paid to one hairline gap arranged in this drawing line of interest (this is called a hairline gap of interest). The position of the start point of the hairline gap is denoted by u1, and the position of the end point is denoted by u2. Similarly, the k-th determined drawing line immediately before the drawing line of interest
Focusing on one hairline gap arranged in the -1st drawing line, let the position of the start point of this hairline gap be v1 and the position of the end point be v2.

The fact that the target hairline gap of the target drawing line and the target hairline gap of the (k-1) th drawing line are adjacent to each other means that one of the following two equations is satisfied. Shall be. v1−thr <u1 and u1 <v2 + thr (11) v1−thr <u2 and u2 <v2 + thr (12) where thr is a parameter value specified in the gap adjacent determination condition 1.

Equation (11) indicates that when the starting point u1 of the target hairline gap of the target drawing line is within the range of (v1-thr) to (v2 + thr), these two target hairline gaps are adjacent to each other. Expression (12) indicates that the position u of the start point of the target hairline gap of the target drawing line is
If 2 is within the range of (v1−thr) to (v2 + thr), it means that these two noticed hairline gaps are adjacent to each other.

This is illustrated in FIG. A rectangle indicated by A in FIGS. 5A to 5E is a hairline gap of interest arranged in the (k-1) th determined drawing line.
Now, as shown in FIG. 5 (a), from the start point and end point of the noticed hairline gap in this determined drawing line,
Considering the range B at both ends extended to the right by the threshold thr,
When the position u1 of the start point of the attention hairline gap of the attention drawing line is within the range of B in the drawing, or when the end point u2 of the attention hairline gap of the attention drawing line is within the range of B of the drawing, The two hairline gaps are adjacent to each other.

Accordingly, assuming that the target hairline gap of the k-th drawing row, which is the target drawing row, is C, the end point of the target hairline gap C is within the range of B as shown in FIG. Alternatively, as shown in FIG. 5C, when the starting point of the noticeable hairline gap C is within the range of B, these two hairline gaps of A and C are adjacent to each other.
As shown in (d) and (e), when neither the start point nor the end point of the hairline gap C is within the range of B, these two hairline gaps are not adjacent.

Now, the gap adjacency determination means 4 determines the start points of all the hairline gaps provisionally determined for the drawing line of interest,
When receiving the data of the position of the end point, it is determined whether or not each of these hairline gaps is adjacent to each hairline gap of the determined drawing line by using equations (11) and (12). I will do it.

More specifically, first, it is determined whether or not the first hairline gap of the drawing line of interest and the first hairline gap of the determined drawing line are adjacent to each other by using equations (11) and (12). If it is determined that there is no adjacent relationship, then a process of determining whether the first hairline gap of the drawing line of interest and the second hairline gap of the determined drawing line are adjacent to each other is determined. repeat.

If the first hairline gap of the drawing line of interest is not adjacent to all the hairline gaps of the determined drawing line, the second hairline gap of the drawing line of interest and the It is determined whether or not the first hairline gap is adjacent to the first hairline gap. If the first hairline gap is not adjacent to the first hairline gap, the second hairline gap of the drawing line of interest and the second hairline of the determined drawing line are next determined. The process of determining whether or not the gap is adjacent is repeated.

As described above, the gap adjacency judging means 4 judges whether or not there is an adjacency relation for the combination of all the hairline gaps of the drawing line of interest and all the hairline gaps of the determined drawing line.

If all the hairline gaps in the drawing line of interest are not adjacent to any of the hairline gaps in the determined drawing line, the gap adjacency determination unit 4 informs the hairline generation and placement unit 3 that there is no adjacent relationship. Notice. At this time, the gap adjacency determining means 4 holds the data of the start point and the end point of each hairline gap in the drawing line.

Upon receiving this notification, the hairline generation / placement means 3 sets the drawing line as the determined drawing line, and sets the data of the width and length of each hairline arranged on the determined drawing line and the position of the start point thereof. To the hairline drawing means 5. If the drawing line does not end (No in step S7 in FIG. 2), the hairline generation and placement unit 3 returns to step S4 with the next drawing line as the drawing line of interest and generates a hairline and a hairline gap. , And perform arrangement processing.

As described above, with respect to each hairline gap of the drawing line of interest, the number of preceding lines to determine the adjacent relationship with each hairline gap of the determined drawing line is determined by m in the gap adjacent determination condition 2.
Is determined by the value of Therefore, when m = 1,
It suffices to determine the adjacency between the determined drawing line immediately before the target drawing line and each hairline gap. For example, in the case of m = 2, for each hairline gap of the target drawing line, The adjacency relationship between the determined drawing line and each hairline gap is determined, and if all the hairline gaps of the target drawing line are not adjacent to any of the hairline gaps of the immediately preceding determined drawing line, then the adjacent drawing line of the target drawing line is determined. With respect to each hairline gap, the adjacent relationship with each hairline gap of the determined drawing row two rows before is determined. The same applies when m is 3 or more.

However, when it is determined that the hairline gap with the drawing line of interest is adjacent to the hairline gap with the determined drawing line for which the adjacent relationship is to be determined,
The gap adjacency determination unit 4 immediately notifies the hairline generation / placement unit 3 that there is an adjacency relationship. At this time, the gap adjacency determining means 4 clears all data of the start point and end point of the hairline gap of the drawing line of interest.

Upon receiving the notification of the presence of the adjacent relationship, the hairline generating and arranging means 3 redo the generation and arrangement of the hairline and the hairline gap for the drawing line of interest (step S6). The processing in step S6 is the same as the processing in step S4. The generated and arranged hairlines and hairline gaps are tentatively determined, and the data of the start and end points of each hairline gap is transmitted to the gap adjacency determination means 4. hand over. Thus, the gap adjacency determining means 4 again determines whether or not there is an adjacency with each hairline gap in the determined drawing line.

When all the drawing lines are determined drawing lines by the above processing (in the case of yes in step S7 of FIG. 2), the hairline drawing means 5 receives the parameter value received from the input means 1 and the hairline drawing line allocating means 2. Such as the value of the width G of the drawing line received from, the value of the width Hn of each line interval, and the width and length of each hairline to be arranged in each drawing line received from the hairline generating and arranging means 3 and the position of the starting point thereof On the basis of the,
Each hairline is drawn (step S8).

An object of the present invention is to make sure that there are no adjacent hairline gaps.
The process of drawing the hairline in step S8 is not an essential matter in the present invention and can be performed by using a known method, but will be briefly described below.

The hairline drawing process includes a width setting step for giving a width to the hairline and a step for giving a fluctuation to the hairline.

First, the determination of the shape of the hairline will be described. Now, let us focus on one hairline in a certain drawing line, its width is wn, its length is ln, and the start point position is xn from the left end of the created image. It is desirable that the hairline has such a shape that the middle portion is the thickest in design and becomes thinner toward the tip. So, first,
The hairline drawing means 5 determines the range for drawing the hairline from the position of xn from the left end of the created image of the drawing line to the position of (xn + ln) as shown in FIG. The start point of the hairline is arranged, and the end point is arranged at the position (xn + ln). At this time, the start point and the end point are arranged at the center position in the height direction of the drawing line. The dashed line in FIG. 6 indicates the center position of this drawing row in the height direction.

Then, a function f (t) in which the variable t is defined in the range of 0 to 1 and the value becomes the minimum value 0 at t = 0 and t = 1, and the value becomes the maximum value 1 at t = 0.5 is applied. The width w at each position in the longitudinal direction of the hairline is calculated by the following equation.
Find (t). w (t) = wn × f (t) (13) In this calculation, however, the length of the hairline is normalized, and the start point is t = 0 and the end point is t = 1.

The hairline drawing means 5 obtains the width of each position of the hairline according to the equation (13), and at each position of the hairline, the w (t) / 2 is vertically shifted from the center position of the drawing line. Perform width setting by length. This is because if the memory area for storing the hairline pattern, which is the created image, is initially cleared, and the value written to all pixels is 0, the above equation is used at each position of the hairline. Can be performed by writing 1 to a pixel corresponding to the width w (t) obtained in the above. Thus, the shape of the hairline is such that the middle portion is the thickest and becomes thinner toward the tip.

The concrete form of the function f (t) may be any form as long as the above condition is satisfied. Further, the function f (t) may be registered in advance in the hairline drawing means 5 or a desired function may be input from the input means 1. Every time is drawn, a function to be used may be determined using a random number.

When the laying process is completed in this way, the hairline drawing means 5 performs a process of giving a fluctuation to the laid hairline. The processing for imparting fluctuation to the hairline is described in, for example, Japanese Patent Application Laid-Open No. H10-16375 previously proposed by the present applicant.
The above-mentioned publications are described in detail and these techniques may be used, but an example will be briefly described.

The fluctuation of the hairline is given by
This is realized by geometrically displacing the center line of the hairline with the width in the width direction of the hairline. For this displacement, it is effective to apply a one-dimensional fractal function, but it is not limited to this. For example, the above-mentioned Japanese Patent Application Laid-Open No. 10-16375 discloses three methods.

At this time, a desired design can be realized by designating the wavelength λ and the amplitude A of the fluctuation with the parameters. For example, the displacement amount Δs (t) in the width direction at each position t in the longitudinal direction of the hairline is defined by Δs (t) = A × g (t) (14). Here, A is the input fluctuation amplitude, g
(T) is a periodic function of the designated fundamental wavelength λ and the value range is −0.
The range is from 5 to +0.5. In this calculation, the length of the hairline is normalized, and the starting point is t = 0,
Assume that the end point is t = 1.

Then, the hairline drawing means 5 shifts, at each position of the hairline, the pixel in which 1 has been written in the above-mentioned width step by the fluctuation amount Δs (t).

By the above processing, for example, FIG.
As shown in FIG. 7 (b), it is possible to apply a fluctuation to the center line of the hairline which is arranged as shown in FIG. it can.

By defining the width G of the drawing line by equation (1) and defining the fluctuation given to the hairline by equation (14), even if the hairline has fluctuation,
Obviously, hairlines arranged in adjacent drawing lines do not intersect.

The hairline drawing means 5 performs the above processing,
This is performed for all hairlines in all drawing lines. When the hairline drawing process is completed, the hairline drawing means 5 passes the data of the created image in which the hairline is drawn, that is, the hairline pattern data to the output means 6. Thereby, the hairline pattern is output (step S
9).

As described above, according to the method and apparatus for creating a hairline pattern, the hairline gap adjacent to the hairline gap in the determined drawing line can be eliminated, so that a plurality of hairline gaps are concentrated. Thus, a hairline pattern with good quality can be created. Further, the operator only needs to input the parameter values first, and the subsequent processing is performed automatically, so that the operator's work load is small.

[Brief description of the drawings]

FIG. 1 is a diagram showing an embodiment of a hairline pattern creating apparatus according to the present invention.

FIG. 2 is a flowchart showing a processing procedure of a hairline pattern creating method according to the present invention.

FIG. 3 is a diagram for explaining assignment of drawing lines and line intervals to a created image;

FIG. 4 is a diagram for explaining the arrangement of hairlines and hairline gaps with respect to drawing lines.

FIG. 5 is a diagram for explaining an adjacent relationship between hairline gaps.

FIG. 6 is a diagram for describing drawing of a hairline.

FIG. 7 is a diagram for explaining the application of fluctuation to a hairline having a width.

FIG. 8 is a diagram for explaining a problem to be solved by the invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Input means, 2 ... Hairline drawing line allocation means, 3 ... Hairline generation arrangement means, 4 ... Gap adjacent determination means, 5 ... Hairline drawing means, 6 ... Output means.

Claims (4)

[Claims] A step of generating and arranging a hairline and a hairline gap in a drawing line allocated in a created image; and a step of generating and arranging a hairline and a hairline gap in a target drawing line in which a hairline and a hairline gap are generated this time. And determining whether the hairline and the hairline gap are adjacent to the hairline gap of the arranged determined drawing line. 2. The determination as to whether or not there is an adjacent relationship is performed based on whether or not a hairline gap of a drawing line of interest and a hairline gap of a determined drawing line overlap with each other including a specified threshold range. The method for creating a hairline pattern according to claim 1, wherein 3. A hairline generating and arranging means for generating and arranging a hairline and a hairline gap in a drawing line allocated in a created image, and a hairline gap of an attention drawing line in which a hairline and a hairline gap are generated and arranged this time. A hairline pattern creating apparatus, characterized in that the hairline and the hairline gap have been generated so far and at least a gap adjacency determining means for judging whether or not the hairline gap of the arranged determined drawing line is adjacent to the hairline gap is determined. . 4. The gap adjacency judging means judges whether or not the hairline gap of the drawing line of interest and the hairline gap of the decided drawing line are adjacent to each other, including a specified threshold range. The hairline pattern creating apparatus according to claim 3, wherein