JPH04296795A - Character pattern generator - Google Patents

Abstract

PURPOSE:To automatically correct an irregularity in line width due to an error in rounding which is caused during digitization for expansion into dots by adjusting the line width vlaue of a pair of horizontal and vertical vectors passed through a line width value propriety decision means. CONSTITUTION:When absolute coordinates of an end point of a short vector constituting an outline character are inputted, a horizontal/vertical vector discrimination part 1 discriminates the horizontal and vertical vectors. As for pairs of vectors paried with a horizontal/vertical vector pairing part 2, a line width value calculation part 3 finds the line width values of horizontal lines (or longitudinal line) that each righthand vector (or downward vector) forms with all lefthand vectors (or upward vector). Then the line width value propriety decision part 4 checks whether the line width values are in an optionally set permissible range or not to decide only pairs in the permissible range as real pairs and exclude other pairs. A line width value adjustment part 5 adjusts the line width values of the pairs in the permissible range to a line width value which is optionally specified in advance.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a character pattern generation device, and more particularly to a character pattern generation device for a document creation device that uses an outline font, such as computer phototypesetting, DTP, and word processing.

0002

2. Description of the Related Art An example of a conventional character pattern generating device is shown in FIG. The encoded character information is stored in the first storage means 81 in FIG. 8, and the output signal from the storage means is converted by the conversion means 82 into absolute (or partially relative) coordinate values of the end points of the short vectors constituting the outline character. , a dot character is generated in the image memory, which is the second storage means 84, by the coloring means 83.

0003

[Problems to be Solved by the Invention] In the conventional character pattern generating device described above, the converting means 82 in FIG. /design size) and immediately sends this to the coloring means 83 in FIG. Digitization of coordinate values causes a rounding error, resulting in uneven line widths as shown in FIG.

[0004] Generally, it is easier to read printed Chinese characters when the line widths of the vertical lines and horizontal lines are uniform, and from the viewpoint of readability, uneven line widths are a problem.

Furthermore, for outputs of very small size,
There is also the problem that when the line width increases by just one dot, adjacent lines touch each other, significantly impairing readability.

[0006]

[Means for Solving the Problems] The character pattern generation device of the present invention provides horizontal/vertical vector identification means for inputting absolute coordinate values of end points of short vectors forming an outline character to identify horizontal vectors and vertical vectors. , a horizontal/vertical vector pairing means for determining a pair of horizontal/vertical vectors forming one horizontal line/vertical line, and calculating a line width value of the horizontal line/vertical line formed by the pair of horizontal/vertical vectors. a line width value calculation means, a line width value suitability determination means for determining whether the line width value is within an allowable range, and a line width value of a pair of horizontal/vertical vectors that have passed through the line width value suitability determination means. The method is characterized by comprising a line width value adjusting means for adjusting the line width value.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram of one embodiment of the present invention. A horizontal/vertical vector identification unit 1 inputs the absolute coordinates of the end points of each short vector immediately before dot expansion that forms an outline character, and identifies horizontal vectors and vertical vectors, and identifies one horizontal line among the obtained horizontal/vertical vectors. / A horizontal/vertical vector pairing unit 2 that creates a pair of vectors forming a vertical line; a line width value calculation unit 3 that calculates the line width value of the horizontal line/vertical line formed by the pair of horizontal/vertical vectors; A line width value suitability determination unit 4 determines whether the line width value is within an allowable range, and a line width value suitability determination unit 4 determines whether each horizontal/vertical vector pair has an arbitrary line width after passing through the determination unit. A character pattern generation device is shown which includes a line width value adjustment section 5 that controls relative position. The output is the absolute coordinates of the end points of the short vector whose line width has been adjusted.

Next, a series of operating procedures will be explained with reference to the drawings.

When the absolute coordinates of the end points of a short vector forming an outline character as shown in FIG. 2 are input, the horizontal/vertical vector identifying section 1 identifies the horizontal/vertical vector. At this time, pay attention to the X increment and Y increment of each short vector.
The vector is considered to be a horizontal vector. In this way, Figure 3
Horizontal and vertical vectors as shown by solid lines are found in (a) and (b), respectively.

Next, a horizontal/vertical vector pairing section 2 performs a combination (pairing) between the horizontal vectors obtained by the horizontal/vertical vector identifying section 1 and the vertical vectors.

First, as shown by solid lines in FIGS. 4(a) and 4(b), horizontal (or vertical) vectors are classified into two types depending on the left and right (or up and down) orientations. For example, if the outer curve 51 of the closed curves is clockwise and the inner curves 52, 53, and 54 are clockwise as shown in FIG. 5, the horizontal line (or vertical line) is a leftward horizontal vector (or an upward vertical vector). and a right-pointing horizontal vector (
or downward vertical vector). Therefore, line width can be understood as the distance between two vectors in a pair.

Next, in the case of a horizontal (or vertical) vector,
As shown in FIG. 6, for each right-pointing vector (or downward-pointing vector), all left-pointing vectors (or upward-pointing vectors) that overlap vertically downward (or horizontally leftward) are linked as pairs.

Furthermore, a horizontal/vertical vector pairing section 2
For each pair paired with , for each right-pointing vector (or down-pointing vector), the horizontal line (
or a vertical line) is calculated by the line width value calculation unit 3.

Next, the line width value suitability determining section 4 checks whether or not the line width value falls within an allowable range arbitrarily set in advance, and only pairs within the range are regarded as true pairs. Pairs 611, 613, 614 in Figure 6 with too large values
, 622 are excluded.

Finally, the line width value adjustment unit 5 adjusts the line width values of the true pairs that fall within the tolerance range to the line width values arbitrarily designated in advance.

[0017] As a method, only the difference between the specified line width value and the current line width value, for example, a rightward vector (or downward vector)
There is a way to move it vertically (or horizontally) as shown in FIG.

Furthermore, in the system configuration, the functions of the line width value calculation section 3 and the line width value suitability determination section 4 can be included in the horizontal/vertical vector pairing section 2.

[0019]

[Effects of the Invention] As explained above, the present invention is a digitization process in which the absolute coordinates (or increments) of the end points of a short vector, which is outline character data of one matrix size, are multiplied by a real number multiplier and then expanded into dots. This has the effect that irregularities in line width due to rounding errors caused by this can be automatically corrected immediately before development into dots.

Furthermore, by controlling the line width more actively, it is possible to prevent adjacent lines from coming into contact with each other when the size is small.

Furthermore, by controlling the horizontal and vertical line widths for each size, it is possible to control the vertical and horizontal line widths to improve readability.

[Brief explanation of drawings]

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

FIG. 2 is a diagram showing outline characters formed by short vectors.

FIG. 3 is a diagram showing vectors found by the horizontal/vertical vector identification unit in FIG. 1;

FIG. 4 is a diagram showing vectors classified into two types based on their left and right (up and down) orientations.

FIG. 5 is a diagram showing the rotation direction of a closed curve forming an outline character.

FIG. 6 is a diagram showing all left-pointing (upward) vectors that overlap vertically down (horizontally left) linked to one rightward-pointing (downward) vector;

7 is a diagram illustrating a vector obtained by moving the rightward (downward) vector in the vertical direction (horizontal direction) by the line width value adjustment unit in FIG. 1; FIG.

FIG. 8 is a block diagram of a conventional example.

[Explanation of symbols]

1 Horizontal/vertical vector identification unit 2 Horizontal/vertical vector pairing unit 3 Line width value calculation unit 4 Line width value suitability determination unit 5 Line width value adjustment unit

Claims (1)

[Claims] 1. Horizontal/vertical vector identification means for inputting absolute coordinate values of end points of short vectors forming an outline character to identify a horizontal vector and a vertical vector; horizontal/vertical vector pairing means for determining pairs of vertical vectors; line width value calculation means for calculating line width values of horizontal lines/vertical lines formed by the paired horizontal/vertical vectors; A line width value suitability determination means for determining whether or not the line width value suitability determination means is within the range, and a line width value adjustment means for adjusting the line width value of a pair of horizontal/vertical vectors that have passed the line width value suitability determination means. A character pattern generator featuring: