JPH025185A - Image processor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an image processing device that creates a composite image in which figures and characters/symbols are superimposed.

(Prior Art) Characters and figures output from displays, printers, etc. are usually created on an image memory that stores the characters and figures themselves in pits.

However, if you create a composite image in which figures and characters/symbols are superimposed on the image memory and output this from a display or printer, the black dots of the figures and the letters/symbols will overlap.
If the symbol overlaps with the black dot, the character/symbol may be buried in the filled part of the shape, or the shape line and the character/symbol may be buried in the filled part of the shape.
There was a problem in that characters intersected with symbols, making it difficult to read them.

(Problems to be Solved by the Invention) The present invention is intended to solve the problems in conventional image processing devices, and is to delete graphic parts around characters/symbols in a composite image in which a graphic and characters/symbols are overlapped. The object of the present invention is to provide an image processing device that can clarify characters and symbols superimposed on a figure.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above-mentioned object, the image processing device of the present invention includes a first storage means in which figures are stored, and a bit pattern of characters and symbols is stored. based on each data stored in the second storage means, the third storage means in which the expanded character pattern obtained by expanding the bit pattern of the character/symbol, and the first to third storage means are respectively stored. and image processing means for creating a composite image in which the bit pattern of characters/symbols and the bit pattern obtained by removing the expanded character pattern from the figure are superimposed.

(Function) In the image processing device of the present invention, the image processing means
Based on each data stored in the first to third storage means, a composite image is created by overlapping the bit pattern of characters/symbols and the bit pattern obtained by removing the expanded character pattern from the figure. letter·
By deleting the graphic parts around the symbol, it becomes possible to clarify the characters and symbols superimposed on the graphic.

(Example) Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a block diagram for explaining the configuration of an image processing apparatus according to an embodiment of the present invention.

In the figure, 1 is an image memory that stores a composite image to be output to an output device such as a display, and 2
3 is a character font ROM in which character/symbol fonts are fixedly stored; 3 is a first memory in which bit patterns of characters/symbols (hereinafter referred to as character patterns) extracted from the character font ROM 2 are developed; 4 is a first memory; A bit pattern obtained by expanding the characters/symbols developed in the first memory 3 at a predetermined magnification in the line width direction (hereinafter referred to as an expanded character pattern)
is the second memory that is expanded.

Further, 5 is a composite image processing circuit that determines the bit pattern to be finally developed on the image memory 1 based on each bit pattern developed in the first and second memories 3.4.

Next, referring to FIG. 2, an image processing operation typical of this embodiment will be explained.

In this figure, 11 is a character pattern stored in the first memory 3, 12 is an expanded character pattern stored in the second memory 4, and 13 is a figure (filled portion) stored in the image memory 1.

Consider now the case where the character pattern 11 stored in the first memory 3 is written into the graphic 13 on the image memory 1.

First, the first and second memories 3.4 are each scanned simultaneously, and the pattern data written in each memory 3.4 is input bit by bit to the composite image processing circuit 5.

The composite image processing circuit 5 writes data to the image memory 1 based on the data read from each memory 3.4 as follows.

Each own bit (
When the L level signal) is taken out, no data is written to the image memory 1.

When the own bit is taken out from the first memory 3 and the black bit (H level signal) is taken out from the second memory 4, the own bit is written into the corresponding position on the image memory 1.

When a black bit is taken out from the first memory 3 and a black bit from the second memory 4, the black bit is written to the corresponding position on the image memory 1.

By sequentially performing such processing on all bits in each memory 3.4, a composite image in which black bits around character pattern 11 are removed by the area of expanded character pattern 12 is finally created on image memory l. be done.

Thus, according to the image processing device of this embodiment, the character pattern 11 arranged within the graphic 13 can be expressed in a readable state without being buried in the graphic 13.

Next, other embodiments of the present invention will be described.

FIG. 3 is a block diagram for explaining the configuration of an image processing device according to another embodiment of the present invention.

In the figure, 21 is a character font ROM in which character/symbol fonts are fixedly stored, and 22 is a character font ROM (22 is a character font ROM).
A first memory in which bit patterns of characters and symbols extracted from M21 are expanded, 23 is a character font ROM 21
A second memory 24 stores an expanded character pattern obtained by expanding the character/symbol bit pattern extracted from the character/symbol bit pattern at a predetermined magnification in the line width direction, and a third memory 24 stores graphics.

Further, 25 converts the graphic portion overlapping the expanded character pattern into its own bit based on the signals for each bit taken out from the second memory 23 and the third memory 24, respectively,
An image conversion circuit 26 that outputs this figure performs an exclusive OR of the signal output from the image conversion circuit 25 and the signal output from the first memory 22, and outputs the result to an output device such as a printer. This is an OR circuit that outputs.

Next, the operation of this embodiment device will be explained with reference to FIG.

In this figure, 31 is a character pattern stored in the first memory 22, 32 is an expanded character pattern stored in the second memory 23, and 33 is a graphic line stored in the third memory 24.

First, the second and third memories 23 and 24 are each scanned simultaneously.

As a result, each bit of data from each memory 23 and 24 is input to the image conversion circuit 25.

The image conversion circuit 25 executes an image conversion process based on the signals output from each memory 23 and 24 as follows.

That is, when a black bit (H level signal) is taken out from the second memory 23 and the third memory 24 at the same time, the image conversion circuit 25 converts the bit into its own bit (L level signal) and When the white bit is taken out from the second memory 23 and the black bit is taken out from the third memory 24, the black bit is output.

Thereafter, the exclusive OR of the signal output from the image conversion circuit 25 and the signal output from the first memory 22 is taken by the OR circuit 26, and the output signal is output to an output device such as a printer. Ru.

Thus, according to the image processing apparatus of this embodiment, a composite image is finally obtained in which the graphic lines 33 intersecting the character pattern 31 are thinned out by the line width of the expanded character pattern 32.

As a result, the character pattern 31 overlapping the graphic line 33 can be made clear.

[Effects of the Invention] As explained above, according to the image processing device of the present invention, by deleting the graphic part around the characters/symbols in a composite image in which a graphic and characters/symbols are superimposed, Characters and symbols can be clarified.

[Brief explanation of the drawing]

FIG. 1 is a block diagram for explaining the configuration of an image processing apparatus according to an embodiment of the present invention, FIG. 2 is a diagram for explaining the flow of image processing in the image processing apparatus of FIG. 1, and FIG. 4 is a block diagram for explaining an image processing apparatus according to another embodiment of the present invention, and FIG. 4 is a diagram for explaining the flow of image processing in the image processing apparatus of FIG. 3. 1... Image memory, 3... First memory, 4.
... 29th memory, 5... composite image processing circuit. Applicant: Toshiba Corporation

Claims (1)

[Claims] (1) A first storage means storing figures, a second storage means storing bit patterns of characters/symbols, and an expanded character pattern obtained by expanding the bit patterns of said characters/symbols. a third storage means, and the first to third storage means;
Based on each data stored in the storage means of
An image processing device comprising image processing means for creating a composite image in which the bit pattern of the character/symbol and the bit pattern obtained by removing the expanded character pattern from the figure are superimposed.