JPH0584520B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a character pattern generation processing method, in particular, a method for automatically smoothing the enlarged character pattern when a reference character pattern consisting of dots is enlarged. The present invention relates to a character pattern generation processing method.

[Problems to be solved by conventional technology and invention]

Conventionally, character patterns consisting of dots were
When enlarging by 2 times, 4 times, 8 times, etc., there is a method of obtaining enlarged characters by enlarging each dot of the reference character pattern by 2 times, 4 times, 8 times, etc.

In this method, each dot is simply enlarged by 2 times, 4 times, etc. to obtain enlarged characters, so diagonal lines in particular become step-like, making it impossible to obtain characters composed of smooth lines. There was a problem.

[Means to solve the problem]

In order to solve the above-mentioned problems, the present invention generates an enlarged character pattern by enlarging a reference character pattern composed of dots. By applying this correction at appropriate locations, a smooth enlarged character pattern is generated. Therefore, in the character pattern generation processing method of the present invention, in which an enlarged character pattern is generated by enlarging a reference character pattern, the character pattern generation processing method generates an enlarged original enlarged character using the reference character pattern. original enlarged character pattern generation means for generating a pattern; corner position detection means for detecting the position of a corner in the reference character pattern to be enlarged by the original enlarged character pattern generation means; Deletion position calculation means for deleting a position where it is not preferable to perform additional correction among the positions of the corner part detected by the part position detection means, from the position to be subjected to additional correction; and slanted dot correction means for making a triangular correction at other positions where the dots were not corrected, and the corner position detection means detects the position immediately before the character when the enlarged character is scanned in the horizontal direction and the vertical direction, respectively. Different weight values are given to the dot and the dot immediately after the character, and the separately assigned weight values are added to each other, and when the calculated weight value has a predetermined addition value, the corner is The deletion position calculation means examines the combination of the calculated weight values of two dots that exist on both sides of the line of the character pattern, and determines whether the combination is the weight value The present invention is characterized in that it is configured to include at least a processing means for deleting a position corresponding to the two dots from the additional correction target positions as the unfavorable position when the values are in a predetermined combination state.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

Figure 1 is a configuration diagram of one embodiment of the present invention, Figure 2 is a conceptual explanatory diagram explaining the concept of the configuration of one embodiment of the present invention, and Figures 3 and 4 are the diagram shown in Figure 1. A procedure explanatory diagram illustrating the procedure of the configuration of one embodiment of the invention, FIGS. 5 to 10 are a concrete example using the configuration of one embodiment of the present invention shown in FIG. 1, and FIG. 11 is a diagram illustrating the invention Application examples are shown in which the configuration of the first embodiment is expanded to various sizes.

In the figure, a procedure related to the present invention is shown.

As shown in FIG. 1, the present invention generates a smooth enlarged character pattern through the steps shown in the figure.

The figure shows a state in which a reference character pattern is enlarged. For example, a character pattern consisting of 24 x 24 dots (for example, the one shown in Figure 2 A) can be changed to a character pattern consisting of double-width 48 x 48 dots (for example, the one shown in Figure 2 A).
Figure B shows the enlarged state.

The figure shows a state in which the "diagonal dot correction position" is calculated. This means that the positions of so-called corner portions are calculated in order to smooth the original enlarged character pattern enlarged as described below.

The figure shows a state in which a "T-shaped arrangement part" is deleted. This is done in order to delete those that are aesthetically undesirable from the enlarged character pattern in which the diagonal dot correction positions calculated in the state are all triangularly corrected as described below. It means calculating the position.

The figure shows a state in which an "L-shaped arrangement part" is deleted. This is done in the "L-shaped part" in order to delete those that are aesthetically undesirable among the character patterns in which all the "diagonal dot correction positions" calculated in the state are corrected in the same manner as in the state. It means calculating the position.

The figure shows a state in which an enlarged character pattern with diagonal dot correction applied to the staircase portion is generated.

By adopting the configuration as explained above,
A beautifully shaped enlarged character pattern having a desired magnification can be obtained from a reference character pattern. Hereinafter, the concept of the present invention will be explained with reference to FIG. 2, the operating principle of the present invention will be explained with reference to FIGS. 3 and 4, and the present invention will be explained with reference to FIGS. Specific examples will be explained one by one.

Figure 2 A is part of the standard character pattern, Figure 2 B and C are part of the character pattern shown in Figure 2 A.
The dot patterns enlarged twice and four times are shown, and the dot patterns shown in Figs. 2D and 2E are shown in Figs. Each enlarged character pattern is shown.

The enlarged character pattern shown in FIG. 2D is related to the present invention, and shows a state in which corner portions of the original enlarged character pattern shown in FIG. 2B, which has been enlarged twice, are interpolated. Similarly, the enlarged character pattern shown in Figure 2E is 4
FIG. 2, which has been enlarged twice, shows the state in which the corner portions of the original enlarged character pattern have been interpolated. Here, “○”
Dots with an "x" inside are interpolated dots. In this manner, the present invention can automatically obtain a smooth enlarged character pattern by interpolating the corner portions of the original enlarged character pattern that has been enlarged twice, quadrupled, etc.

FIG. 3 shows the procedure for the interpolation shown in FIG. FIG. 3A shows the original enlarged character pattern before enlarged interpolation. The black part is the part that makes up the character pattern.

FIGS. 3B to 3D depict the procedure for calculating the oblique dot correction position in FIG. 1. Figure 3B shows that when the original enlarged character pattern shown in Figure 3A is scanned in the horizontal direction and the original enlarged character pattern is crossed from left to right, a weight is applied to the position immediately before the character pattern that is crossed. A weight of "1" is set, and a weight of "2" is set at the position immediately after the crossing character pattern. Thereafter, all horizontal directions are scanned in the same manner, and a weight of "1" or "2" is set.

FIG. 3C shows, in the same way as in FIG. 4", and a weight "8" is set at the position immediately after the crossing character pattern. When performing the process shown in FIG. 3C, the horizontal scanning is performed in FIG.
Or, if "2" is displayed, the added value as shown in Figure 3D, i.e. "5", "6", "9"
Or set a value consisting of “10”. Then, in the same manner, all vertical directions are scanned to set a predetermined value. These values are shown as "A" in FIG. 3D and will be considered. Among the values established as above, the corner portions to be corrected are given the values "5", "6", and "6" as shown in FIG.
Corresponds to “9” and “10”. Therefore, the portion where this value is located becomes the oblique dot correction position shown in FIG.

FIG. 4 shows the procedure for deleting the T-shaped and L-shaped portions shown in and in FIG. FIG. 4A shows the original enlarged character pattern before deletion. The numerical values in the figure are the oblique dot correction positions determined as explained using FIG. 3, and target positions are values "5", "6", "9" and "10".

FIG. 4B describes the procedure for deleting the T-shaped lined parts, and the white triangular parts as shown in the figure as line-symmetrical are the objects to be deleted. That is, among the original enlarged character pattern before deletion, as shown in FIG.
Positions with combination values of "10" and "9", "9" and "5", and "5" and "6" are targeted for deletion.

FIG. 4C describes the procedure for deleting the L-shaped aligned portions, and the white triangular portion shown in FIG. 4A at the corner of the L shape in the figure is to be deleted.
That is, out of the original enlarged character pattern before deletion shown in Figure 4A, part b in Figure 4D is the object of deletion.
If the original enlarged character pattern is located both in the lower right direction of illustration c and the upper left direction of illustration d as indicated by arrows, the one in illustration b is targeted for deletion.
Similarly, images rotated by an integral multiple of 90 degrees are also subject to deletion. As a result, for example, a triangular correction is not performed on the inner corner of a rectangular shape, so that it is possible to avoid correction to a position that is aesthetically undesirable.

In FIG. 5, scanning is performed in the horizontal direction as described above using FIG. Indicates the state where “2” is set. In the figure, if the position where weight "1" is set and the position where weight "2" is set overlap, the value of the sum of both is set.

In FIG. 6, scanning is performed in the vertical direction as described above using FIG. Indicates the state where "8" is set.

In Figure 7A, the values of each weight described in Figures 5 and 6 are added for the corresponding positions, and the added values are "5", "6", "7", and "9". and "10" are extracted.

FIG. 7B shows the process of extracting the numerical values shown in FIG. 7A. The values of the horizontal scan e shown in the figure are horizontally scanned from left to right as described above, and a weight "1" is set at the position immediately before the change from white to black, and a weight "2" is set at the position immediately after. In addition, the value of the vertical scan shown in the figure is similarly scanned in the vertical direction from above in the opposite direction, and a weight of "4" is set at the position immediately before the change from white to black, and a weight of "8" is set at the position immediately after. .
The sum of both values is shown in g in the figure. FIG. 7B shows each value corresponding to the indicated values e, f, and g. Through such a process, the one shown in FIG. 7A is generated.

In Fig. 7, C indicates the diagonal dot correction positions where the summed values are "5", "6", "9", and "10" from Fig. 7B, that is, the corner portions of the original enlarged character pattern. This is an extracted only.

FIG. 8 shows an example of an enlarged character pattern after correction, as shown by a triangular white area at the diagonal dot correction position of the original enlarged character pattern shown in FIG.
The enlarged character pattern after the correction has a rounded shape, which is not aesthetically pleasing because triangular correction is unconditionally applied to all corners inside the rectangular shape.

Figure 9 shows the "T-shaped side-by-side section" shown in Figure 1.
The enlarged character pattern after deletion is shown. This deletion is performed based on the procedure shown in FIG. 4B, which has already been described. The enlarged character pattern shown in FIG. 9 obtained in this way is compared with the original shown in FIG. A character pattern that is faithful to the original standard character pattern before enlargement can be obtained without any distortion.

FIG. 10 shows an enlarged character pattern after the "L-shaped aligned portion" shown in FIG. 1 has been deleted from the pattern shown in FIG. 9. This deletion is done in the fourth section mentioned above.
The process is carried out based on the procedure shown in FIG. The enlarged character pattern shown in FIG. 10 obtained in this way is compared to the one shown in FIG. A character pattern that is faithful to the original standard character pattern before enlargement can be obtained without any distortion.

Figure 11A shows a character pattern composed of 24 x 24 dots as a standard, and the left column in Figure 11 shows the character pattern obtained by the process shown in Figure 1.
The original enlarged character pattern enlarged by 2 times, 4 times, 8 times, and 12 times is shown, and the right column shows the enlarged character pattern after performing the processing shown in Figure 1 on the original enlarged character pattern shown on the left. are shown respectively.

Comparing the original enlarged character pattern in the left column of the figure with the enlarged character pattern in the right column, it is found that the jaggedness in the diagonal direction that makes up the enlarged character pattern has been reduced and has become smoother. do.

〔Effect of the invention〕

As explained above, according to the present invention, after enlarging a reference character pattern composed of dots to generate an original enlarged character pattern, corner parts in the original enlarged character pattern are found, and Since a predetermined triangular correction is performed after processing to delete undesirable corner portions, it is possible to generate an enlarged character pattern with a smooth and beautiful shape.

[Brief explanation of the drawing]

Figure 1 is a configuration diagram of one embodiment of the present invention, Figure 2 is a conceptual explanatory diagram explaining the concept of the configuration of one embodiment of the present invention, and Figures 3 and 4 are the diagram shown in Figure 1. A procedure explanatory diagram illustrating the procedure of the configuration of one embodiment of the invention, FIGS. 5 to 10 are a concrete example using the configuration of one embodiment of the present invention shown in FIG. 1, and FIG. 11 is a diagram illustrating the invention Application examples are shown in which the configuration of the first embodiment is expanded to various sizes. In the figure, a procedure related to the present invention is shown.

Claims (1)

[Scope of Claims] 1. In a character pattern generation processing method that generates an enlarged character pattern by enlarging a reference character pattern, an enlarged character pattern generating means; a corner position detecting means for detecting the position of a corner in the reference character pattern to be enlarged by the original enlarged character pattern generating means; Deletion position calculation means for deleting, from the positions subject to additional correction, positions at which it is not desirable to perform additional correction among the positions of the corner portions thus detected; and other positions that were not deleted by the deletion position calculation means. and slanted dot correction means for performing triangular correction, and the corner position detection means detects a dot immediately before the character and a dot immediately after the character when scanning the enlarged character in the horizontal direction and the vertical direction, respectively. A corner portion exists when the calculated weight value has a predetermined addition value. The deletion position calculating means examines the combination of the calculated weight values of two dots that are located on both sides of the line of the character pattern, and the deletion position calculating means examines the combination of the calculated weight values for the two dots that exist on both sides of the line of the character pattern, A character pattern generation processing method comprising at least a processing means for deleting a position corresponding to the two dots from the additional correction target position as the unfavorable position when the two dots are in a combination state.