JPH087760B2 - 3D image input method - Google Patents

Description

The present invention relates to a three-dimensional image input method for inputting and transforming three-dimensional image data using a computer or the like,
For example, the present invention relates to a three-dimensional image input method for improving the efficiency of the three-dimensional image input work of a computer operator such as computer graphics and CAD.

[Outline of Invention]

The present invention is a two-dimensional coordinate pointing /
In order to easily generate and transform three-dimensional image data using a device, the target object image is displayed in the center of the graphics screen, and the image is obtained by projecting the mirror image on the mirror surface arranged on the left, right, top and bottom of the target object image. The computer operator uses a pointing device to perform operations such as generation and deformation of the target object image and mirror image while using a lot of image information, which enables highly interactive 3D image input. I am trying.

That is, the three-dimensional image input method according to the present invention assumes a room with left and right upper and lower mirrors and displays an image of an object in the room on a monitor screen of a computer by using a computer graphics technique. Therefore, it is possible to provide a computer operator with a much more realistic image than the three-view drawing. Therefore, when three-dimensional image data is generated and deformed using a two-dimensional coordinate pointing device such as a mouse, the amount of three-dimensional movement of the pointing device can be naturally understood and operated, so that the generation and deformation can be performed faster and more accurately. The work efficiency can be improved.

[Conventional technology]

Conventionally, in three-dimensional CAD and three-dimensional modeling systems, three screens 19 and 2 as shown in FIG. 2 have been used as an interactive input method using a pointing device such as a mouse.
0,21 and bird's eye view 22 are used.

In the case of 3 views, 3D image data is X-X, Y-Z, Z-X
The computer operator makes the three-dimensional image 19, 20, 21 projected on each of the planes 15, 16, 17 three-dimensional in his head, and
Pointing required for generation and transformation of 3D image data
The operation of the device is performed for each plane 15,16,17.

Also, in the case of the bird's-eye view 22, processing such as rotation of the target object is required to input the three-dimensional coordinate values using a pointing device such as a mouse.
It is often used as an auxiliary see-through plane 18 for displaying the operation result by 0, 21.

[Problems to be Solved by the Invention]

However, any of the above-described three-view drawing and bird's-eye view has a disadvantage that it is inconvenient for a computer operator to intuitively and interactively generate and transform three-dimensional image data.

Therefore, an object of the present invention is to provide an operation 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, It is to provide a method capable of efficiently performing input work.

[Means for solving the problem]

In the three-dimensional image input method according to the present invention, 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 the monitor screen and the plurality of mirror image display screens are provided. By deforming and modifying the image displayed on any one of them, the corresponding parts of the images displayed on the other screens are simultaneously modified and modified to be displayed to generate or modify a three-dimensional image. It is characterized by.

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

[Work]

Since the monitor screen of a computer such as an engineering workstation is a two-dimensional screen, originally it is difficult to input three-dimensional coordinate values, but many computer operators have a natural and realistic feeling. If an image is given, the three-dimensional coordinate value can be easily input. One of them is a three-view drawing, but it is a projection drawing of the target object in only three directions and lacks a sense of reality. Also, in the case of a bird's-eye view, there is a sense of reality, but it is difficult to input three-dimensional image data with only one.

Therefore, in the present invention, it is assumed that the room has mirrors on the left, right, top, and bottom, and the image of an object in it is displayed on the monitor screen of the computer using the computer graphics method. It can provide computer operators with much more realistic images.

Therefore, the two-dimensional coordinate pointing /
When three-dimensional image data is generated and transformed by using a device, the amount of three-dimensional movement of the pointing device can be naturally understood and operated, so that the generation and transformation can be performed faster and more accurately, and the work efficiency is improved. .

〔Example〕

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

1 (A) to 1 (C) are views for explaining one embodiment of the present invention. This figure shows a three-dimensional image input method using mirror images of left, right, upper, and lower mirror surfaces provided adjacent to the central monitor screen.

In FIG. 1 (A), four mirror surfaces 3, 4, 5 on the left, right, top and bottom are displayed on a graphics screen 2 displayed on a monitor screen 1 of a computer such as an engineering workstation.
6 are arranged, in addition to the target object image 7 at the center of the graphics screen 2, mirror images 8, 9, 10, 11 corresponding to the respective mirror surfaces 3, 4, 5, 6
Is projected using a computer graphics technique.

 The procedure of the three-dimensional image input method will be described below.

1) Select an image to be input / deformed from the target object image 7 and each of the mirror images 8, 9, 10, 11 with a pointing device such as a mouse.

For example, if you select mirror image 8, you can move freely within the right mirror surface.
Can be transformed.

2) Select the object, surface, ridgeline or point you want to move / deform with a pointing device and move / deform as much as necessary.

3) The results of the above movement / deformation operations are simultaneously performed on the target object image 7 and the other mirror images 9, 10, 11, so that the computer operator can accurately and quickly see many screens. Dimensional images can be input and transformed.

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

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

FIG. 3 shows a hardware configuration for implementing the present invention. In the figure, 3-1 is a ROM, which stores a computer startup processing program and the like.

A RAM 3-2 is used as a work area for programs, data processing and the like.

3-3 is an external interface circuit, for example, Et
Use an external interface such as hernet or RS232C.

3-4 is a CPU (central processing unit of a computer) for rendering and enlarging a mirror image (left, right, top, bottom, etc.)
Performs reduction auxiliary screen processing.

3-5 is an internal interface circuit, VME Bus
Including internal interface circuit such as.

A display list buffer 3-6 stores a computer-generated display program.

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

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

A frame buffer (two-dimensional memory) 3-9 stores color information for each point on the display.

Reference numeral 3-10 is a display controller, which reads out the contents of the frame buffer in accordance with the display synchronization signal and controls the video signal.

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

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

Reference numeral 3-13 is a color display which outputs a result of calculation processing by the CPU.

3-14 is a keyboard for inputting characters and numbers to the CPU.

Numeral 3-15 is a mouse, which displays coordinate information based on hand movements as a CP.
Type in U.

FIG. 4 is a flow chart showing the procedure for inputting a three-dimensional image in this embodiment. In this figure, step S2
Then, 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, 1
While looking at 1, rotate and move the target object image 7 to transform and
Make it easy to correct.

In step S6, the target object image 7 and each mirror image 8, 9, 10, 1
Point the image that is easy to input and transform from 1
Select by device.

In step S8, an object, a surface, a ridgeline or a point to be moved / deformed is selected with a pointing device.

In step S10, the target object image is moved / deformed on the monitor screen.

In step S12, the mirror image (left) is used to move / deform in a vertical plane (vertical) with respect to the monitor screen.

In step S14, the mirror image (right) is used to move / deform in a vertical plane (vertical) with respect to the monitor screen.

In step S16, the mirror image (upper) is used to move / deform in a vertical plane (horizontal) with respect to the monitor screen.

In step S18, the mirror image (bottom) is used to move / deform in a vertical plane (horizontal) with respect to the monitor screen.

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

〔The invention's effect〕

As described above, according to the present invention, the efficiency of 3D image input work of a computer operator such as computer graphics and CAD is required in a field that requires an operation of inputting and transforming 3D image data using a computer. Can be improved.

[Brief description of drawings]

1 (A) to 1 (C) are views showing a three-dimensional image input method according to an embodiment of the present invention, FIG. 2 is an explanatory view of a conventional technique, and FIG. 3 is a view for carrying out the present invention. FIG. 4 is a block diagram showing a hardware configuration for this, and FIG. 4 is a flowchart showing a 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 (bottom), 7 ... Target object image, 8 …… Mirror image (left), 9 …… Mirror image (right), 10 …… Mirror image (top), 11 …… Mirror image (bottom), 12 …… Crop screen, 13 …… Enlargement / reduction auxiliary screen , 14 ... Enlarged / reduced image, 15 ... XY plane, 16 ... YZ plane, 17 ... ZX plane, 18 ... Perspective plane, 19 ... Front view, 20 ... Plane Figure, 21 …… Side view, 22 …… Bird's-eye view.

Claims (2)

[Claims] 1. A plurality of mirror image display screens are provided adjacent to a monitor screen for displaying a target object image viewed from a predetermined viewpoint, and displayed on any one of the monitor screen and the plurality of mirror image display screens. By modifying and modifying the displayed image, corresponding parts of the image displayed on other screens are simultaneously modified and modified to be displayed, and a three-dimensional image is generated or modified. Image input method. 2. The three-dimensional structure according to claim 1, wherein, of the images displayed on the monitor screen and the plurality of mirror image display screens, a portion related to deformation correction is enlarged or reduced on an auxiliary screen. Image input method.