JPS6114513B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a figure enlargement processing method, particularly when enlarging a figure pattern given as black and white dots on an NXM matrix, with respect to a mesh that is repeated in the horizontal and/or vertical direction. The present invention relates to a graphic enlargement processing method that examines the surrounding environment of a mesh, indexes an enlargement correction memory, and corrects undesirable irregularities that occur during the enlargement.

Generally, a figure containing characters is given as black and white dots on an NXM matrix, and this is enlarged and output as necessary. In this case, in general, when enlarging, for example, a 6×6 graphic pattern 1 as shown in FIG. 1A into a 7×7 enlarged graphic pattern 2 as shown in _FIG. Coordinate the horizontal pattern (Y ₀ +1)
is repeated, and then the column pattern with coordinate X ₀ is repeated at coordinate (X ₀ +1). Looking at this result, the mesh indicated by the white circle in FIG. 1B becomes a black dot, and the enlarged result becomes undesirably distorted.

The purpose of the present invention is to correct the above-mentioned distortions (generally unevenness), and for meshes that are repeated in the horizontal and/or vertical directions, the surrounding environmental conditions are investigated and a correction memory is indexed.
The purpose is to correct undesirable unevenness. Therefore, the figure enlargement processing method of the present invention is provided with a figure font memory in which figure patterns given as black and white dots on the NXM matrix, including characters, are stored, and the contents of the figure font memory are stored. In a graphic enlargement processing system that enlarges and outputs the graphic pattern by repeating the pattern for one or more desired rows and/or columns on the matrix, For each mesh to be repeated, an ambient environment detection unit is provided to check whether or not the black dot is present in surrounding meshes around the mesh, and to check whether the mesh to be repeated is a black dot or not. An enlargement correction memory is provided which is indexed by at least three parties including whether the mesh is enlarged in the horizontal direction and/or the vertical direction and the output from the surrounding environment detection section, and the contents of the enlargement correction memory are provided. The present invention is characterized in that correction is made during the repetition of the mesh for which the above repetition is performed based on the above. This will be explained below with reference to the drawings.

Figures 2A, B, and C are explanatory diagrams for explaining the mode of expansion that occurs when one mesh is expanded, and Figures 3A, B, C, and D are each used to examine the surrounding environment referred to in the present invention. Explanatory diagram explaining weighting, 4th
The figure is an explanatory diagram for explaining the correction position when the mesh to be enlarged in both the vertical and horizontal directions is a black dot. Figures A and B together constitute one explanatory diagram, and the mesh is enlarged in both the vertical and horizontal directions. An explanatory diagram illustrating the correction position when the mesh is a white dot, and FIG. An explanatory diagram to
FIG. 7 is an explanatory diagram illustrating the correction position when the mesh that is enlarged only in one direction, horizontal or vertical, is a white dot, and FIG. 8 is an embodiment of the configuration of the main part of the present invention. , FIG. 9 is an example of the original pattern of 30×30 mesh, FIG. 10 is an enlarged view of the case where the correction according to the present invention is not performed by simply enlarging it, and FIG. 11 is a case where the correction according to the present invention is performed. An enlarged view is shown.

When enlarging a figure pattern by repeating one mesh, for example, (ii) When expanding to 4 meshes (positions "1", "2", "3", and "4" shown in the figure), (ii) When expanding to four meshes (positions "1", "2", "3", and "4" shown in the figure), ”, when expanding to “2”,
(iii) As shown in FIG. 2C, there is a case where the image is enlarged only in the horizontal direction to the illustrated positions "1" and "2". If such enlargement is simply performed, undesirable unevenness will occur as explained with reference to FIG.

For this reason, in the case of the present invention, as shown in FIG.
The conditions of the U, V, and W dots are checked to correct irregularities that occur in undesired shapes.

FIG. 3B-1 and FIG. 3B-2 show weighting based on the presence status of black dots in surrounding meshes used when mesh X is enlarged both vertically and horizontally. That is, when a black dot exists on the mesh Q shown in FIG. 3A, a weight of "1" is given to the mesh X, and when a black dot exists on the mesh S, a weight of "2" is given. If these overlap and a black dot exists in both the meshes Q and S, a weight of "3" is given so that... Then, the weight according to FIG. 3B-1 is temporarily set as the weight value A). Also, 3rd place against Metsuyu
If a black dot exists in the mesh P shown in Figure A, a weight of "1" is given, and if a black dot exists in the mesh U, a weight of "2" is given. If there is a black dot in both U and U, a weight of "3" is given so that... Then, the weight according to FIG. 3B-2 is temporarily set as weight value B. By doing this, the existence of black dots around the mesh X can be defined by the weight values (A, B). Needless to say, the weight values (A, B) can range from (0, 0) to (15, 15).

FIGS. 3C-1 and 3C-2 show weighting based on the presence status of black dots in surrounding meshes used when mesh X is enlarged only in the vertical direction. Furthermore, FIGS. 3D-1 and 3D-2 show weighting based on the presence status of black dots in the surrounding mesh used when mesh X is enlarged only in the lateral direction. Even in these cases, the weight values (A, B) are still given depending on the presence of black dots in the surrounding mesh.

FIG. 4 shows that when the mesh X is a black dot and the weight values (A, B) take predetermined values when expanding in the vertical and horizontal directions, FIG.
This section explains which of the illustrated positions "1" to "4" should be corrected to a white dot. That is, for example, considering the mesh X shown in FIG. 1, the weight values (A, B) of the surrounding meshes for the mesh X are as follows, as can be seen by superimposing FIG. 3 B-1 and FIG. 3 B-2. The weight value becomes (6, 5). When this result is applied to FIG. 4, it is found that the position "3" shown in FIG. 2A should be corrected to a white dot as indicated by K in the drawing, and the position "3" shown in FIG. Note that no correction is made for meshes X having weight values (A, B) not shown in FIG. Also, meshes outside the matrix are treated as white dots.

Hereinafter, in the case shown in Fig. 5, Fig. 6, and Fig. 7,
Detailed explanation will be omitted as it can be easily inferred from the above explanation, but the correction shown in the "dot" column is performed on the position shown in the "corrected position" column in each figure. You can think that.

FIG. 8 shows the configuration of an embodiment of the main part of the present invention.
The symbol 3 in the figure is a figure font memory, for example
The one with MXN addresses, 4 is an enlarged position instruction memory, which has MXN addresses and stores the value "1" corresponding to a mesh that is enlarged only in the horizontal direction and is enlarged only in the vertical direction. The value "2" is stored corresponding to a mesh that is expanded in both vertical and horizontal directions, and the value "3" is stored corresponding to a mesh that is enlarged in both vertical and horizontal directions. 5 is an address counter for memories 3 and 4. 6 is a dot extraction unit for mesh X and its surrounding meshes, 7 is an enlargement instruction information extraction unit for mesh X and its surrounding meshes, 8 is an ambient environment detection unit, and 9 is a vertical and horizontal direction A weight value register for enlargement, 10 a weight value register for vertical enlargement, 11 a weight value register for horizontal enlargement, 12 a memory for vertical and horizontal enlargement correction for black dots. 4. Correction information as shown in FIG. 4 is stored using weight values (A, B) as addresses, 13 is a memory for vertical and horizontal enlargement correction for white dots, and 5th memory is used when mesh X is a white dot.
The correction information as shown in Figures A and B is the weight value (A, B)
14 is a memory for vertical enlargement correction for black dots in which correction information as shown in FIG. 6 is stored when the mesh X is a black dot. 15 is a memory for white dots. 16 is a memory for vertical enlargement correction for dots and stores correction information as shown in FIG. 7 when the mesh X is a white dot; 16 is a memory for horizontal enlargement correction for black dots; A memory 17 stores correction information as shown in FIG. 6 when X is a black dot, and 17 is a memory for horizontal expansion correction for white dots, as shown in FIG. 7 when mesh X is a white dot. 18 to 20 are OR circuits, and 21 is a decoder for discontinuing the enlargement instruction information given to mesh X.

By operating address counter 5,
From memory 3, each mesh P, Q, R, S, X,
The dot information for T, U, V, and W is read out to the dot extraction section 6, and the enlargement instruction information given to the corresponding mesh is read out from the memory 4 to the enlargement instruction information extraction section 7.

Meshes P, Q, R, from the dot extraction unit 6
The dot information of S, T, U, V, and W is supplied to the surrounding environment detection section 8, and the dot information shown in FIG.
The respective weight values (A, B) corresponding to FIG. 3 C-1 and C-2 and FIG. 3 D-1 and D-2 are extracted.
At this time, the decoder 21 decodes the enlargement instruction information for the mesh X, for example "3", and provides a set signal to the register 9. Furthermore, the dot extraction section 6
The dot information of the mesh X is supplied to each of the enlargement correction memories 12 to 17. For this reason,
Assuming that the mesh X is a black dot, the memory 12 is accessed using the above-mentioned weight values (A, B) as an address, and the correction information corresponding to the weight values (A, B) is output from the memory 12 as illustrated correction data. Output as I. This correction data I is paired with the dot information of mesh X and stored in a memory (not shown).

Although not shown, a simple enlargement pattern as described with reference to FIG. 1 is obtained based on the contents of the graphic font memory 3 and the enlargement position instruction memory 4, respectively. Then, the correction information obtained as shown in FIG. 8 is applied to the simple enlarged pattern, and finally a corrected enlarged pattern is obtained.

Incidentally, FIG. 11 shows the result of performing the enlargement process according to the present invention on the pattern shown in FIG. 9. The triangle marks in FIG. 9 represent the rows or columns in which enlargement is performed. As can be seen from a comparison with FIG. 10, which shows a pattern without the correction according to the present invention, that is, with only simple enlargement, areas L, M, N, etc. in FIG. 10 are similar to those shown in FIG. If necessary, it has been corrected to the desired form.

Although FIG. 8 shows processing using a hardware configuration, it goes without saying that the surrounding environment detection unit 9 shown in FIG. 8 can be easily changed to software processing, and the present invention is not limited thereto. .

As described above, according to the present invention, when enlarging a graphic pattern, it is possible to easily correct undesirable unevenness that occurs during the enlargement process based on the contents of the enlargement correction memory.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram for explaining undesirable unevenness that occurs during the enlargement process; FIGS. 2A, B, and C are explanatory diagrams for explaining the mode of enlargement that occurs when one mesh is enlarged; and FIG. Figures A, B, C, and D are explanatory diagrams for explaining the weighting of examining the surrounding environment according to the present invention, and Figure 4 explains the correction position when the mesh enlarged both vertically and horizontally is a black dot. The explanatory diagram, FIGS. 5A and B, together constitute one explanatory diagram, and the explanatory diagram, FIG. An explanatory diagram illustrating the correction position when a mesh that is enlarged only in one direction (horizontal or vertical) is a black dot. An explanatory diagram illustrating the correction position when the mesh is a white dot,
Figure 8 shows the configuration of one embodiment of the present invention, and Figure 9 shows a 30x30
An example of the original mesh pattern is shown in FIG. 10, which is simply enlarged and shown without the correction according to the present invention, and FIG. 11 is an enlarged view when the correction according to the present invention is performed. In the figure, 1 is a figure pattern, 2 is an enlarged figure pattern, 3 is a figure font memory, 4 is an enlarged position instruction memory, 6 is a dot extraction section, 7 is an enlarged instruction information extraction section, 8 is a surrounding environment detection section, 12 or 17 each represent an enlargement correction memory.

Claims (1)

[Claims] 1 A graphic font memory is provided in which a graphic pattern given as black and white dots on an NXM matrix, including characters, is stored, and the content of the graphic font memory is stored in any desired row and/or column. Alternatively, in a figure enlargement processing system that enlarges and outputs the figure pattern by repeating the pattern for a plurality of pieces, the mesh is A surrounding environment detection unit is provided to check the presence or absence of the black dot in meshes around the center, and also detects whether or not the mesh on which the above repetition is performed is a black dot, and whether the mesh is in the horizontal and/or vertical direction. an expansion correction memory indexed by at least three parties including the output from the surrounding environment detecting section and the output from the surrounding environment detection section; A figure enlargement processing method characterized in that a correction is made when a figure is enlarged.