JPH0425974A - Three-dimensional picture inputting method - Google Patents

Abstract

PURPOSE:To simultaneously deform and correct the corresponding part of a picture being displayed on another display screen by arranging plural mirror image display screens in adjacent relation to a monitor screen to display an objective body image seen from a prescribed visual point, and deforming and correcting the picture being displayed on one of them. CONSTITUTION:Four pieces of a left, a right, an upper and a lower mirror surfaces 3 to 6 are arranged on a graphic screen 2, and corresponding mirror images 8 to 11 are reflected on each mirror surface 3 to 6 besides the objective body image 7 located at the center of the graphics screen 2. The procedure of a three-dimensional picture inputting method is explained as follows. First of all, an image desired to input and deform is selected from among the objective body image 7 and each mirror image 8 to 11 by a mouse, etc. For instance, when the mirror image 8 is selected, it can be freely moved and deformed in the right mirror surface. Then, a body, a surface, a ridgeline, and a point desired to move and deform are selected by the mouse, and are moved and deformed by necessary quantity. Since this result appears simultaneously in the objective body image 7 and the other mirror images 9, 10, 11 as well, an operator can input and deform a three-dimensional picture by seeing many display screens.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a three-dimensional image input method for manually transforming three-dimensional image data using a computer or the like. The present invention relates to a three-dimensional image input method that improves the efficiency of three-dimensional image input work by computer operators.

[Summary of the Invention] The present invention displays a target object image in the center of a graphics screen in order to easily generate and transform three-dimensional image data using a two-dimensional coordinate pointing device such as a mouse, and The image is projected onto mirror surfaces placed on the left, right, top, and bottom of the target object image on the screen, and a computer operator uses a pointing device to generate images for the target object image and mirror image while using multiple image information. - Performs operations such as transformation, which enables highly interactive 3D image input.

That is, the three-dimensional image input method according to the present invention assumes a room with mirrors on the left, right, top, and bottom, and uses computer graphics techniques to create an image of an object in the room on a computer monitor. Since it is displayed on a screen, it is possible to provide the computer operator with a much more realistic image compared to a three-sided view. Therefore, when generating or transforming 3D image data using a 2D coordinate pointing device such as a mouse, the amount of 3D movement of the pointing device can be naturally understood and manipulated, making generation and transformation faster. This allows the work to be carried out accurately and improves the work efficiency.

[Conventional technology]

Conventionally, in 3D CAD and 3D modeling systems, three-sided drawings 19 as shown in Fig. 2 are used as an interactive input method using a pointing device such as a mouse.
．． 20.21 and Torichenzu 22 are used.

In the case of a three-dimensional view, the three-dimensional image data is X-X.

The computer operator converts the two-dimensional images 19, 20, 21 projected onto the y-z and z-x planes 15, 16, 17 in his head into three-dimensional images, and generates and generates 3-dimensional image data. The operation of the pointing device necessary for the deformation is performed for each plane 15, 16, 17.

In addition, in the case of the bird track diagram 22, inputting three-dimensional coordinate values using a pointing device such as a mouse requires processing such as rotating the target object, which is mainly required for the three-dimensional diagram 19.
．． It is often used as an auxiliary perspective plane 18 for displaying the operation results according to 20.21.

[Problems to be Solved by the Invention] However, the three-view diagram and the bird's-eye diagram described above are inconvenient for computer operators to intuitively and interactively generate and transform three-dimensional image data. It has the disadvantage of being.

Therefore, an object of the present invention is to provide a method for inputting and transforming three-dimensional image data using a computer, for example, when a computer operator such as computer graphics or CAD inputs a three-dimensional image.
The purpose of the present invention is to provide a method for efficiently performing input work.

[Means for Solving the Problems] A three-dimensional image input method according to the present invention includes disposing a plurality of mirror image display screens adjacent to a monitor screen that displays an image of a target object viewed from a predetermined viewpoint. By deforming and correcting the image displayed on any one of the monitor screen and the plurality of mirror image display screens, the corresponding part of the image displayed on the other screen is simultaneously deformed and displayed;
It is characterized by generating or transforming a three-dimensional image.

Further, of the images displayed on the monitor screen and the plurality of mirror image display screens, a portion related to deformation correction can be displayed in an enlarged or reduced size on an auxiliary screen.

[Function] Since the monitor screen of a computer such as an engineering workstation is a two-dimensional screen, it is originally difficult to input three-dimensional coordinate values, but this method provides a natural and tangible feeling to the computer operator. If a large number of images are given, three-dimensional coordinate values can be easily input. One of these is a three-view diagram, which is simply a three-directional projection of the target object and lacks a sense of reality. Also 5, duck■
In the case of a diagram, there is a sense of substance, but it is difficult to input three-dimensional image data with just one.

Therefore, the present invention assumes a room with mirrors on the left, right, top, and bottom, and uses computer graphics techniques to project an image of an object inside the room on a computer monitor screen.

It is possible to provide a computer operator with an image that is much more realistic than a three-view diagram.

Therefore, when generating or transforming 3D image data using a 2D coordinate pointing device such as a mouse, the amount of 3D movement of the pointing device can be naturally understood and manipulated, making generation and transformation faster. It can be done more accurately, improving work efficiency.

[Example] Next, one embodiment of the present invention will be described in detail.

FIG. 1(A) to FIG. 1(C) are diagrams for explaining one embodiment of the present invention. This diagram uses mirror images from the left, right, top, and bottom mirror surfaces installed adjacent to the central monitor screen.
A three-dimensional image input method is shown.

In FIG. 1(A), a graphics screen 2 displayed on a monitor screen 1 of a computer such as an engineering workstation has four mirror surfaces 3.4,
5.6, and in addition to the target object image 7 in the center of the graphics screen 2, mirror images 8.9.10°11 corresponding to each mirror surface 34 and 5.6 are created using computer graphics techniques. It's showing.

Below, the procedure for the three-dimensional image input method will be explained.

1) Select the image you want to transform manually from the target object image 7 and each mirror image 8.9.10.11 using a pointing device such as a mouse.

For example, if you select mirror image 8, you can move and transform it freely within the mirror surface on the right.

2) Select one surface, edge, or point of the object you want to move or transform using a pointing device, and move or transform it as much as necessary.

3) The results of the above movement and transformation operations are also performed on the target object image 7 and other mirror images 9.10.11 at the same time, so
A computer operator can input and transform three-dimensional images accurately and quickly by looking at multiple screens.

4) By repeating steps 1) to 3) above, a surface corresponding to the movement/deformation direction is selected.

Furthermore, since the computer operator can arbitrarily cut an image from the target object image or mirror image and freely enlarge or reduce it on the auxiliary screen 13, the interactive operability of inputting and transforming the three-dimensional image is excellent.

FIG. 3 shows an eight-doware configuration for implementing the invention. In the figure, 3-1 is a ROM, which stores computer start-up processing programs and the like.

3-2 is a RAM, which is used as a work area for programs, data processing, etc.

3=3 is an external interface circuit, for example Et
An external interface such as hernet or R3232C is used.

3-4 is the CPU (central processing unit of the computer), which performs rendering processing of mirror images (left, right, top, bottom, etc.), enlargement,
Performs reduction auxiliary screen processing, etc.

3-5 is an internal interface circuit, VMEBu
Contains internal interface circuitry with S.

3-6 is a display list buffer that stores computer-generated display programs.

A display processor 3-7 interprets the contents of the display program and performs the next rask, text processing, etc.

A graphics processor 3-8 performs three-dimensional image generation processing such as hidden line and hidden surface processing.

3-9 is a frame buffer (two-dimensional memory);
Stores color information for each point on the display.

A display controller 3-10 reads out the contents of the frame buffer in accordance with a display synchronization signal and controls the video signal.

3-11 is a color lookup table, which stores a table of colors used in the display.

3-12 is a D/A converter, which converts the video signal from digital format to analog format.

3-13 is a color display, which outputs the results calculated by the CPU.

3-J4 is a keyboard, and the CPU inputs letters, numbers, etc.
Enter.

3-15 is a mouse, which captures information based on hand movements.
Enter in pu.

FIG. 4 is a flowchart showing the procedure for inputting a three-dimensional image in this embodiment. In this figure, step S2
Now, the three-dimensional basic shape of the target object image 7 is input.

In step S4, the target object image 7 and each mirror image 8, 9 .
10. Rotate and move the target object image 7 while looking at 11 to make it easy to deform and modify.

In step S6, the target object image 7 and each mirror image 8, 9 .
10. Use the pointing device to select an image that is easy to input and transform from 11.

In step S8, nine surfaces of the object to be moved/deformed are selected.

Select an edge or point with a pointing device.

In step SlO, the target object image is moved and transformed within the monitor screen.

In step S12, the mirror image (left) is used to move and transform in a plane perpendicular to the monitor screen.

In step S14, the mirror image (right) is used to move and transform in a plane perpendicular to the monitor screen.

In step SlB, the mirror image (earth) is used to move and transform in a vertical (horizontal) plane relative to the monitor screen.

In step 318, the mirror image (bottom) is used to move and transform within the vertical (horizontal) plane relative to the monitor screen.

In step S20, the amount of deformation correction is confirmed on the auxiliary screen for enlargement, and input of the three-dimensional image is completed.

[Effects of the Invention] As explained above, the present invention is applicable to fields that require inputting and transforming three-dimensional image data using a computer, such as computer graphics, (:A
The efficiency of three-dimensional image input work by computer operators such as D can be improved.

[Brief explanation of the drawing]

1(A) to 1(C) are diagrams showing a three-dimensional image manual method according to an embodiment of the present invention, FIG. 2 is an explanatory diagram of the prior art, and FIG. 3 is a diagram for implementing the present invention. FIG. 4 is a flowchart showing the three-dimensional image input procedure in this embodiment. 1... Computer monitor screen, 2... Graphics screen, 3... Mirror surface (left), 4... Mirror surface (right), 5... Mirror surface (top), 6... Mirror surface ( 7...Target object image, 8...Mirror image (left), 9...Mirror image (right), IO...Mirror image (top), 11...Mirror image (bottom), 12...・Cut screen, 13... Enlarge/reduce auxiliary screen, 14... Enlarge/reduce image, 15... X-Y plane, 16... Y-Z plane, 17... Z-X plane, 18... Transparent plane, 19... Front view, 20... Top view, 21... Side view, 22... Bird eyelid view.

Claims (1)

[Scope of Claims] 1) A plurality of mirror image display screens are arranged adjacent to a monitor screen that displays a target object image viewed from a predetermined viewpoint, and any one of the monitor screen and the plurality of mirror image display screens is provided. The feature is that by deforming and correcting the image displayed on one screen, corresponding parts of images displayed on other screens are simultaneously deformed and displayed, thereby generating or transforming a three-dimensional image. 3D image input method. 2) The three-dimensional image input method according to claim 1, further comprising enlarging or reducing a portion of the image displayed on the monitor screen and the plurality of mirror image display screens to be modified on an auxiliary screen. .