JPS59165191A - Drawing device of handwriting pattern - Google Patents

Abstract

PURPOSE:To erase some of a handwritten figure through simple operation by determining a rectangular area to be erased which is based upon the coordinates of two input points as a peak and erasing this area. CONSTITUTION:Some of a handwritten figure, e.g. a numeral 2 in the middle among numeral 1, 2, and 3 is erased, a command for area erasure is sent out of an operation part 6 and a main control part 7 receives the indication of an area erasure mode. An area erasure processing part 8 inputs the two opposite peak points of a rectangle of proper size which encircles the numeral 2 and has sides parallel to an X and an Y axis from a figure input part 1 to determine the area of the rectangle and make the area to be of the same color with the background, thus erasing said figure. Consequently, some of the handwritten figure is erased easily through the simple constitution.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a handwritten figure drawing device for drawing handwritten figures.

Conventionally, there has been a device of this type as shown in FIG.

In the figure, (L) is the figure input section, (2) is the coordinate detection section, (3) is the above coordinate detection section, and linear interpolation processing is performed from the sample point coordinates obtained in I2) to determine the intermediate interpolation point coordinates. An interpolation processing unit that performs calculations: 4) is an image storage unit that stores interpolation point coordinates of handwritten figures; (5) is the image storage unit 4)
(6) a figure display section for displaying one image stored in the image;
Reference numeral denotes an operation section for specifying the color for drawing a handwritten figure and instructing an erasing mode, and a main control section for receiving instructions from the operation section +61 to +71t and controlling the entire system.

Next, the operation sequence will be explained. A hand-drawn figure is input through the graphic human input unit (+1), and the coordinates of sample points are detected by the coordinate detection unit (2). Using these sample points, the interpolation processing unit (3) calculates the coordinates of the interpolation point, and generates one piece of information (color 9) corresponding to each coordinate obtained by interpolation.
gradation) is stored in the image storage unit: 4). The contents of this image storage section (4) are always displayed on the graphic display section (5). Specify the color and gradation of the drawn image using the operation section (
The main control section (7) is controlled through the operation section (6).
) to control the entire system according to specifications from

Now, if you want to erase a part of the handwritten figure, use the control panel (6) to set the drawing color to the same color as the background color. In the same way as
Use a manual pen to trace over the shape you want to erase. For example, as shown in Figure 2, 1, which has already been written,
2. To erase only the middle number // 2 /L among the three numbers in 3, specify the drawing color to be the same as the background, and then trace exactly over the number "2" you want to erase. The method is to erase it little by little.

Conventional handwritten figure drawing devices are configured as described above, so in order to erase part of a handwritten figure,
After drawing in the same color as the background, the figure to be erased must be accurately traced over with a hand-drawn pen, so there was a drawback that the erasing process took a long time.

In order to eliminate the drawbacks of the conventional ones as described above, this invention uses the coordinates of two points input from the graphic human power section during the erasing operation, and sets the two points to opposite vertices. By finding a rectangular area with sides parallel to the axis and the Y axis as the erasing area, and performing erasing processing on this area, you can erase a partial area of a handwritten figure with simple input operations and simple erasing processing. The purpose is to provide a graphics drawing device.

An embodiment of the present invention will now be described with reference to the drawings. Third
In the figure, (L) is a figure input unit for inputting a figure, (2) is a coordinate detection unit that detects the coordinates of a sample point belonging to a handwritten figure manually entered by the figure input unit 11), and (3)
) is an interpolation processing section that performs linear interpolation processing based on the sample point coordinates determined by the coordinate detection section (2) to obtain intermediate interpolation points, and 14) is an interpolation processing section that obtains intermediate interpolation points. (5) is a figure display section that displays the figures stored in the image memory section (4), and (6) is a section where you can specify the color to be drawn and select a certain area. (7) is a main control unit that controls the entire operation according to instructions from the operation unit (6);
) is based on the coordinates of two points manually entered from the graphic human power section ill when a command to erase a partial area is given in the operation section (6), and the two points are placed facing each other.
The vertex is the X axis.

Y! This is an area erasing processing unit that finds a rectangular area with sides parallel to 1llI and erases the inside of that area.

Next, the operation will be explained in detail. To erase a part of the handwritten figure (three numbers 1, 2, and 3) shown in Figure 2, for example the number "2" in the middle, use the "area erase" command from the operation panel (6). By outputting the main control unit (
7) Instructs area erase mode. In the area erase mode, for example, if you want to erase the number "2" in the middle as shown in Figure 4, consider a rectangle of an appropriate size that surrounds the number "2" and has sides parallel to the X and Y axes. By inputting two opposing vertices, for example, PA (X+, Y+) and PB (X2, Y2), from the graphic human power section il+, the coordinates of the other two vertices QA (Xz, Y+), QB (xi, Y
2) is determined, and the figure to be erased is erased by making the inside of the rectangular area whose vertices are the four points PA, QB, PB, and qA the same color as the monochrome view.

Therefore, as a result of the area erasing process, only the number "2" in the middle of the handwritten figure shown in FIG. 2 is erased, as shown in FIG.

Therefore, in Figure 4, to specify a rectangular area, two of PA and PB are used.
Although a point was used, two points, one for Q and one for QB, may also be given.

Note that in the above embodiment, both sides of the erase area are the X axis and the Y axis.
We considered a rectangle parallel to @, and indicated two opposing vertices one by one. However, as shown in Figure 6, we can use the starting and ending points of the stroke of the pen in the figure input section to draw rectangles that are opposite vertices. You may also ask for In this case, the coordinates of the midpoint of the stroke do not affect the area specification.

Further, in the above embodiment, the erasing process C in which the designated area is filled in with the same color as the background has been described, but it is also possible to perform the area drawing process in which the specified area is filled in with any color.

As described above, according to the present invention, the two points input during the erasing operation are defined as two opposing vertices on the X axis.

Since an area erasure processing unit is added that performs erasure processing using a rectangular area having parallel sides to each Y@ as an erasure area, there is an effect that a part of a handwritten figure can be erased with a simple operation with a simple configuration.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a conventional handwritten figure drawing device, FIG. 2 is a diagram showing an example of a handwritten figure, FIG. 3 is a block diagram of a handwritten figure drawing device according to an embodiment of the present invention, and FIG. 4 is a block diagram of a conventional handwritten figure drawing device. is an explanatory diagram showing how to specify a rectangular area to erase a part of a handwritten figure, Figure 5 is a diagram showing the result of processing a part of a handwritten figure by erasing a rectangular area, and Figure 6 is an illustration of how to erase a part of a handwritten figure. FIG. 6 is an explanatory diagram of a case where an erasure area is specified using a start point and an end point. (1)...Graphic input section, (2)...Coordinate detection section, (
3)...Interpolation processing unit, (4)...Picture 1 image storage unit, (
5)...Figure display section, (6)...Operation section, (7)...
...Main control unit, (8)...area (self-destruction processing unit. The same reference numerals in the figures indicate the same or equivalent parts. Agent Makoto Kuzuno - Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] ([) In a handwritten figure drawing device that manually draws and displays handwritten figures, there is a figure input unit for manually drawing figures, and a coordinate detection unit that detects the coordinates of each sample point belonging to the manually drawn figures. , an interpolation processing section that performs interpolation processing using the sample points detected in the coordinate detection section, an image storage section that stores figures interpolated by the interpolation processing section, and the image storage section 1. A figure display unit that displays stored figures, an operation unit that instructs drawing or erasing operations, and two sample points manually input from the figure operator during the erase operation as opposed vertices on the X axis. The present invention is characterized by comprising an area erasing processing unit that makes a rectangular area having two sides parallel to the Y axis the same color as the background, and a main control unit that receives instructions from the operating unit and controls the entire operation. A handwritten figure drawing device. I21 The area erasure processing unit uses the store a input from the graphic input unit during the erasure operation as the two sample points.
2. The handwritten figure drawing device according to claim 1, wherein the handwritten figure drawing device uses a start point and an end point.