JPS6045879A - Graphic input device - Google Patents

Abstract

PURPOSE:To obtain a graphic input device having high stability to the fluctuation of operation by averaging the writing pressure of a pointer over a graph and comparing this writing pressure with the boundary pressure to obtain the corresponding color information and then to decide the color of the graph. CONSTITUTION:A pressure position input part 3 consists of a pointer 4, an input surface 5 and a control part 6. The pressure information and the position information are produced when an operator operates the pointer 3 containing a strain gauge on the surface 5. The pressure information is sent to an average pressure calculating circuit 7. The circuit 7 adds the pressure information sampled between the start and the end of input and dividing the integrated value by the sampling frequency when the input is through to obtain the average value. This average value is sent to a color deciding circuit 8 and compared with the contents of a boundary pressure memory to obtain the pressure level information. Then the color information corresponding to the pressure level is read out of a color information memory 10. Thus it is possible to decide the color or a graph from the average value of the writing pressure of the graph.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for interactively inputting graphics into a computer in a graphics processing system such as Computer Graphics.

Graphic processing systems such as Combita Graphics combine an input device such as a keyboard or tablet with a display device such as a refresh type CB or T, allowing you to efficiently input desired graphics while talking to the system. It is configured as follows.

When creating original images for animation or inputting hand-drawn drawings, it is called inking, and the movements of a pointing device such as a tablet stylus are input directly into a computer. At this time, it is necessary to define the color of the input shape, but conventional methods include commands to specify the color and commands to change the color. Either the desired colors are defined in advance, or the colors are assigned to each figure after inputting the figures.

The conventional method will be explained using an example in which a picture of a flower as shown in FIG. 1 is input into a computer. Here, the "flower" part in Figure 1 (A in Figure 1) is red, and the stem part (I in Figure 1) is red.
The mouth of the figure) should be entered in yellow, and the ``leaf'' part (c in Figure 1) should be entered in green. In method ``'C of pre-defining and inputting the caulking color, first define the pink color using a command.Next, operate the stylus on the tablet to input the ``flower'' part. Next, define the color yellow using the command and input the "stem" part. In the same way, you can input the "leaf" part and obtain a picture with the desired color scheme.

On the other hand, in the method of assigning colors after inputting a figure, the picture shown in FIG. 1 is input after inputting a figure using a command. After inputting the name, select the "flower" part using the separately prepared shape selection command and specify pink using the color change command. Similarly, by assigning yellow to the "stem" portion and green to the "E-leaf" portion, a picture with the desired color scheme can be obtained.

However, in the above method, each time the color of a figure is changed, the color must be changed using a command, which makes the operation for the operator extremely complicated.

The purpose of the present invention is to improve operability by eliminating the operation of defining a color with a separate command when inputting a figure with one color specified, and the operation of assigning a color to a figure after inputting, which has been done away with in view of the above-mentioned conventional circumstances. The purpose of this invention is to provide a good graphic input device.

Another object of the present invention is to provide a graphic input device that is stable and reliable against fluctuations in the operation of an indicator, in which the color of an input graphic is determined based on the average value of pressure over the entire graphic. Our goal is to provide the following.

According to the present invention, in a figure input device comprising a display means, a coordinate input means, and an information processing means, the position coordinates of the pointing instrument during writing are changed while each figure is being written down one by one. and a means for detecting a pressure value of the pointing device at the position coordinates, a boundary pressure value storage means for storing a predetermined boundary pressure value corresponding to a plurality of color information, and a boundary pressure value storage means for storing a predetermined boundary pressure value corresponding to a plurality of color information; color information storage means for storing color information; means for averaging the pressure values of the instructions over one figure; and averaging by comparing the average pressure value with the contents of the boundary pressure storage means. By providing means for converting the pressure angle into a pressure level value and obtaining corresponding color information from the color information storage means using the level value, the color of one figure is determined by the average value of the writing pressure values of the figure. A graphic input device is obtained, which is characterized in that it determines .

According to the graphic input device of the present invention, when inputting the trajectory of the indicator of a human coordinate device such as a tablet into a computer by changing the color, the color can be easily changed by simply controlling the pressure of the indicator, and , a stable and reliable graphic input device that absorbs fluctuations in the operator's operation of the indicator is realized because the color is determined based on the average pressure value over one graphic (l:).

The present invention will be explained in detail below with reference to the drawings.

FIG. 1 shows an example of a picture that can be input using the graphic input device of the present invention, such as a picture of a flower used as a background in an animation or the like. Usually, the flower part (A part) is red, the stem part (mouth part) is yellow, and the leaf part is yellow.
The part (a+X part of C) is colored in an appropriate color, such as green.

Figure 2 shows how the graphic input device of the present invention is used as a coordinate human-powered device that can obtain position information and pressure information, using a tablet that can also detect pressure by introducing a strain gauge into the indicator. A block diagram of an embodiment of the constructed interactive graphic processing system is shown.

In the figure, reference odd number 1 is an electronic computer, 2 is a display device,
3 is a pressure/position input device, 4 is an l'+1 indicator, 5 is an input surface, 6-digit control unit, 7 is an average pressure calculation circuit, 8 is a color block constant circuit, 9 is a boundary pressure memory, 1θ is color information It's memory.

Electronic meter'S machine 1a: Display device 2 via signal line 100
Similarly, when controlling the display of figures, etc., the operator The instruction A40-information and pressure information on the input surface 5 accompanying the operation are detected at an appropriate embedding period.

Further, a boundary pressure value for leveling the preset pressure value and color information corresponding to this boundary pressure value, such as red, yellow, green, etc., are sent to the color determination circuit 8 via the signal line 100. , pressure boundary memory 9 via signal line 500
and are respectively recorded in the color information memory 10.

The pressure position input device 3 includes an indicator 4, an input surface 5, and a control section 6. The control unit 6 is controlled by an electronic computer 1 via a signal line 100, and when an operator operates the indicator 4 incorporating a strain gauge on the manual surface 5, the indicator obtained through the signal line 200 is Pressure information is generated based on the signal from the strainage 4 and position information is generated based on the signal from 5, and the pressure information is sent to the average pressure calculation circuit 7 via the signal line 300. At the same time, position information is sent to the computer 1 via the dividing line 100.

The average pressure calculation circuit 7 is controlled by an electronic computer 1 via a signal line 100, and in response to instructions 4, calculates one figure, for example, the "flower" part in FIG. 1. Pressure information sequentially sent from the control unit 6 of the input device 3 according to the sampling period is added over the period of time, and the average value is calculated by dividing the integrated value 1G at the end of input by the number of zumblings. It is configured to output a value and send it to the color determining circuit 8 via a signal line 400.

Prior to inputting a picture as shown in FIG.
The color information corresponding to the boundary pressure value set in advance is stored and set in the color information memory through the press line 500 and the boost pressure value 9. Also.

Similarly, under the control of the electronic computer 1, the average pressure value sent from the IL equalization pressure supply circuit 7 via the newsletter line 400 at the end of the graphic manual operation of one graphic; Level information is generated by comparing and classifying into preset pressure levels, and based on this level information, the corresponding color information is read out from the color information memory lO, and the color information is read out via the signal line 100. It is configured to send to the electronic computer 1.

As explained and explained above using the drawings, the present invention provides the first
Figure [Pressure of the pointing tool (Y Pilgrimage 1] when inputting two colors of figure V input as the trajectory of the pointing tool as shown)
You can easily perform bright holes such as red, yellow, etc., and one figure, for example, in Figure 1, C.
- The pressure of the finger tips is averaged over the 1"th part and the r-3J part of the "flower" to determine the color of this figure. It is stable by absorbing the change III when the operator operates the fingers 7j and A. It can be seen that it is possible to input small figures such as Tawara and l<4 sen.

1α) 1 of 1f. FIG. 2 is a block diagram of a moxibustion example when a pressure position input device capable of detecting pressure information and position information is applied to an interactive graphic processing system using 4'll.

Figure 2, come on, l...electronic ■1' calculator, 2...display device, 39. Pressure position input device, 4... Indication, 5.
... Input surface, 6... Control unit, 7... Average pressure calculation circuit, 8-... Color determination circuit, 9... Boundary pressure memory, 1
0: Color information memory.

Claims (1)

[Claims] In a graphic human-powered device comprising a display element S, a coordinate input means, and an information processing means, the positional coordinates of the pointing tool being written and the finger at the positional coordinates are means for detecting the pressure value of the bracket, boundary pressure value storage means for storing a predetermined boundary pressure value for leveling the pressure 111 corresponding to a plurality of color information, and the boundary pressure value 7. color information storage means for storing color information corresponding to the pressure implant; means for averaging the pressure value of the indicator over one figure; and comparing the average pressure value with the content of the boundary pressure storage means. By providing a color determining means that converts the pressure into a level value and obtains corresponding color information from the color information storage stage 1 based on the level value, the average value of the writing pressure values of one figure is used. A graphic input device characterized in that the color of the graphic is determined.