JPS62107380A - Graphic inputting system - Google Patents

Abstract

PURPOSE:To input a graphic correctly as a vector data by inputting the graphic temporarily as an image data by a raster operation format, and thereafter, displaying it on a monitor and inputting the vector data. CONSTITUTION:When an operator inputs a graphic by using a scanner 1, its image data is accumulated in an image memory 41, decoded by a signal processing part and displayed as an original drawing on a monitor 2. In such a state, when a desired position, a kind of a line, etc. of the graphic which is displayed on the monitor 2 are indicated successively by using an indicator 3, they are inputted as a vector data to a vector data memory 42, also converted to an image data and inputted to an image data memory 43, and also displayed on the monitor 2 through a signal processing part 44 by a color, etc. being different from the original drawing. In such a way, the operator can input correctly the graphic as the vector data.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical field to which the invention pertains) The present invention relates to a figure input method for inputting figures as background data such as points and line segments.

(Prior art) Conventionally, in this type of method, a paper or the like on which a figure is drawn is placed on a digitizer (a figure input device that detects the specified position coordinates), and the operator uses the digitizer to draw the end points of the figure, etc. Figures were input as vector data by instructing.

Therefore, input accuracy depends on the resolution of the digitizer as well as
This greatly affects the accuracy of the operator's position designation, making it difficult to input with high accuracy.

In addition, checking whether the input has been performed correctly or whether there are any omissions is extremely complicated and time-consuming because the input device and the output device are different.

(Objective of the Invention) An object of the present invention is to solve these problems and provide a figure input method that easily inputs figures as vector data.

(Structure of the Invention) The present invention first inputs a figure as image data into a computer using a scanner such as a facsimile, displays the input result on a monitor, and specifies the end points of the figure on the monitor. , which makes it possible to correctly input figures as vector data.

In conventional technology, when inputting a figure as vector data, only vector data such as the position coordinates of end points inputted by the operator was handled, but in the present invention, vector data is processed using image data inputted with a scanner. The major difference is that data is input.

(Example) FIG. 1 is a diagram for explaining the system concept of the present invention, and for ease of explanation, it is assumed that figures to be input are written in black on a white background.

In FIG. 1, the area surrounded by solid lines represents the drawing area (black area), and the other areas represent the background area (white area).

In the present invention, a figure is imported into the device as a set of pixels (image data), its contents are displayed on a monitor, and the operator uses an indicator to point out the end points (Pl, P2, . . . of the figure) while looking at the figure on the monitor. . . , P engineering), etc., and converts it into vector data (line segments p1p, , line segments P2P3, . . . , line segments Pi, P4).

At that time, in the present invention, the input vector data is immediately converted to image data (the broken line part in the figure) and superimposed and displayed in a different color from the original image data, so that the relative positional relationship with the original image data is displayed on the monitor. I'm trying to be clear.

Furthermore, in the present invention, it is also possible to correct the position input by the operator or to alert the operator using the original image data.

As a correction, for example, a specified point P, P2, etc. is placed in the center of the drawing part of the original image. ...tPl. If the image data converted from the vector data is not included in the original image data, a warning to that effect is displayed to the operator.

FIG. 2 is a diagram for explaining the configuration of an embodiment of the present invention, in which 1 is a scanner, 2 is a monitor, 3 is an indicator, 4 is a graphic input device, 41.43 is an image data memory, 42
4 is a vector data memory, 44 is a signal processing section, and 45 is a control processing section.

The scanner 1 raster scans a figure written on paper or the like and converts it into an electrical signal, and is, for example, a facsimile transmitter, a television camera, or the like.

The monitor 2 displays the output signal from the graphic input device 4 as graphics in a form that can be recognized by the operator, and is, for example, a television receiver.

The indicator 3 is used by the operator to indicate the end points of a figure displayed on the monitor 2 and to input the figure as vector data, and is, for example, a light ben, a mouse, or the like.

The graphic input device 4 displays the contents on the monitor 2 and inputs the graphic as vector data so that the operator can easily recognize whether the signals from the scanner 1 and the indicator 3 are the desired ones. It is something that makes it possible.

The image data memory 41 digitizes the signal from the scanner 1 and stores it as image data, which is a set of pixels.

The vector data memory 42 stores position data, line type, etc. from the indicator 3, and converts the vector data into image data when transferring it to the image data memory 43.

The signal processing unit 44 sequentially reads the image data memories 41 and 43 and outputs signals in a format suitable for the monitor 2.

At that time, the contents of the image data memory 41.

That is, the original picture and the contents of the image data memo January 3, ie, the operator's instruction input data, are made to have different colors or brightness.

The control processing unit 45 controls the entire graphic input device 2 and performs control as necessary.

Here, as for data processing, as explained with reference to FIG. 1, the original image data is used to correct the input data of the operator or display a warning display, which will be described later.

The operation of FIG. 2 is as follows.

When an operator inputs a figure using the scanner 1.

The image data is stored in the image memory 4I,
It is decoded by the signal processing unit 44 and displayed on the monitor 2 as is. Then, as described in FIG. 1 using the indicator 3, the desired position of the figure displayed on the monitor 2,
When the type of line, etc. is sequentially specified, it is inputted as vector data into the vector data memory 42, and is also converted into image data and entered into the image data memory 43.
Furthermore, the image is displayed on the monitor 2 in a color different from that of the original image via the signal processing section 44.

This allows the operator to convert the graphics into vector data one after another using the indicator 3 while viewing the graphics displayed on the monitor 2.

FIG. 3 is a diagram illustrating the logical operation method of the signal processing section, which is a component of FIG. 2.

In order to correctly convert a figure into vector data, it is necessary to clearly indicate on the monitor 2 the positional relationship between the original image and the vector data input by the operator using the indicator 3.

FIG. 3 shows that in the image data memories 4i, 43,
If image data is present, II I II is displayed, and if there is no image data, II Q II is displayed. The color B is used to distinguish the color from 100%.

By doing this, the presence of one color B on monitor 2 alerts the operator that the original image has not been converted into vector data correctly, and the operator can correct only that part. By doing so, the °C2 correction can be easily performed.

FIG. 4 shows an embodiment of a circuit for implementing the logical operations shown in FIG.

441 to 443 are AND circuits with negation, 444 to 448 are AND circuits, and 449 are OR circuits;
I) The circle mark on the input terminal of the circuit (441-44:l>) indicates the negation of logic.

It is obvious that the operation shown in FIG. 4 corresponds to the logic table shown in FIG. 3, so a description thereof will be omitted.

As explained in FIG. 3, in order to further emphasize only a specific color, for example, color B, when performing a blinking display (blinking display), a signal O is connected to the output terminal of the AND circuit 446.
A circuit for controlling N and OFF using a timer or the like may be inserted.

FIG. 5 is a diagram illustrating the concept of input correction in the control processing section, which is a component of FIG. 2.

This is known as line thinning processing, which is a process of thinning a figure to a width of one pixel, and the line figure as a result of this process changes depending on the processing algorithm, but for example, it is like the one shown by the dashed-dotted line in Figure 5. is obtained.

In the case of FIG. 5, whiskers appear in the sharp parts of the figure, but it is relatively possible to obtain the center pixel row of the drawn part of the figure.

The control processing unit 45 finds one pixel of the thinned figure that is closest to the position coordinates input by the operator, and corrects the input coordinates as if the operator had specified that pixel from the beginning.

To find the pixel of the thinned figure closest to the position coordinates input by the operator, when the input coordinates are (Xi, Yi), for example, Xi-a≦Xk≦xi+a, Yi-a≦Yk≦ Yi
+ a (However, cy, = 0.1, 2, . . . -) Among the thinning pixels (xk, yk) that satisfy the following, the one with the smallest α may be used.

FIG. 6 is a diagram showing an example of the processing procedure for selecting one pixel on a thinned figure, where (Xi+Yj,) is the coordinate specified by the operator, and (Xk, Yk) is the coordinate on the thinned figure. It is 1 pixel.

Since the processing procedure is clear from FIG. 6, the explanation will be omitted.

(Effects of the Invention) As explained above, the present invention is a method for converting a figure into vector data in an interactive format, by first manually converting the figure into image data in a raster operation format, and then displaying it on a monitor.
You can enter vector data in a conversational manner using an indicator while looking at the displayed figure, so you can prevent omissions in input.
This has the advantage of improving input accuracy and shortening input time.

[Brief explanation of drawings]

FIG. 1 is a diagram for explaining the system concept of the present invention, FIG. 2 is a diagram for explaining the configuration of an embodiment of the present invention, and FIG. 3 is a diagram for explaining the system concept of the present invention.
4 is a diagram illustrating an example of a circuit for implementing the logical operation shown in FIG. 3, and FIG. FIG. 6 is a diagram illustrating the concept of input correction in the control processing unit, which is a component, and is a diagram illustrating an example of a processing procedure for selecting one pixel on a thinned figure. 1...Scanner, 2...Monitor, 3...Indicator. 4...Graphic input device. 41.43... Image data memory, 42... Back 1 to file data memory, 44... Signal processing section, 45... Control processing section. Patent applicant Nippon Telegraph and Telephone Corporation Figure 1 Figure 2? Figure 3 Figure 4 EICD 441-443 @ constant + 4 AND field T each 444-4
48-ANDIJu 449-ORTanekiFigure 5Figure 6

Claims (1)

[Claims] A method for inputting figures as vector data in a conversational format, comprising: a first means for scanning the figure in a raster scanning format; and a second means for accumulating image data obtained by the first means. , a third means for specifying arbitrary positional coordinates of a figure on the monitor and inputting it as vector data; and a fourth means for accumulating the vector data inputted by the third means and decoding it into image data. , a fifth means for accumulating the image data obtained by the fourth means; reading the image data from the second means and the fifth means;
a sixth means for performing a logical operation to create a specific display signal corresponding to each; a seventh means for displaying the display signal created by the sixth means; and a third means for displaying the second to sixth means. A graphic input method comprising an eighth means for performing control processing.