JP3235743B2 - Simulation image processing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simulation image processing method, and more particularly, to a method for simulating a specific model in order to analyze a physical phenomenon, and displaying a simulation image as a moving image. The present invention relates to a simulation image processing method that can be displayed as a video with a realistic physical feeling.

[0002]

2. Description of the Related Art Conventionally, analysis of physical phenomena is often performed by a simulation process in which a specific simulation model is set and a theoretical analysis is performed. In this simulation, a large computer is used to numerically calculate the set model. The contents are often visually displayed by a moving image generated by computer graphic processing based on the result. The simulation model is a relatively simplified one, but its use is
This is because the conditions that are actually present are complicated, many, the calculations are enormous, and some conditions are difficult to predict.

In the case of entertainment such as movie images, images are generated by synthesizing real images and moving images generated by computer graphic processing. Since conditions are not included, superimposition of images is simple and relatively easy. However, for physical phenomena in the scientific field, strictness is required for images, and the simulation model and the simulation result therefor are physically causal and inseparable.

[0004]

By the way, recently,
Observing images of the simulation results is often beyond the scope of specialized scientists and is conducted by the general public. In such a case, a moving image based on a simulation model usually has a simple outline display of the model shape and is often filled with an interior, and the display is not a real color but a color that is close to a composite color or a primary color. At present, there is no real feeling and it is difficult to understand.

In order to solve such a problem, it is conceivable to combine the simulation result moving image and the real image by superimposing them. However, when strict superposition is performed, the simulation image data and the real image data are combined. It requires both coordination and adjustment, is time consuming, and is not efficient. However, such a composition that a real image is simply superimposed like a movie would impair the scientific meaning of a physical phenomenon simulated by a large computer. The present invention solves such a problem of the prior art, and makes it possible to convert a video having a realistic realism that is generally easy to understand from a moving image generated based on a result of simulation of a physical phenomenon. It is an object of the present invention to provide a simulation image processing method which can be easily generated without deteriorating various conditions.

[0006]

A feature of the simulation image processing method for achieving the above object is that a real image corresponding to the model shape is captured by a video camera, and a video data portion corresponding to the model shape is obtained from the captured data. Extract and expand the video data portion so that the maximum length in the vertical direction and the maximum length in the horizontal direction of the extracted video data portion are almost equal to the maximum length in the vertical direction and the maximum length in the horizontal direction of the model shape, respectively. Processing or reduction processing is performed to generate video data of a real image, and the generated video data is replaced with a video data portion corresponding to a model shape to generate moving image information.

[0007]

The simulation model used in the analysis of physical phenomena is usually represented by a contour shape, and the shape is often fixed. Therefore, the outline of the video can be relatively easily extracted. Also,
It is relatively easy to separate the image captured by a video camera or the like between the object and the background by operating the luminance and color signals. Therefore, as described above, a video data portion corresponding to the model shape is extracted from the actual imaging data, and the model of the original moving image is matched with this video according to the maximum length in the vertical direction and the maximum length in the horizontal direction of the model shape. If video information is generated by fitting it in the shape location, the simulation video of the generated moving image will have a real image in the model part,
An image having a real color and shape and obtained from a calculation result of the simulation can be stored as a background image without any change in its state.

[0008]

FIG. 1 is a block diagram for explaining a simulation image processing method according to one embodiment of the present invention.
Is an explanatory diagram of the processing procedure, and FIG. 3 is an explanatory diagram of the processing content. In FIG. 1, reference numeral 1 denotes a video camera, which captures an actual video corresponding to a model to be simulated. Reference numeral 2 denotes a video signal processing device, which digitizes data of video captured by a video camera for one screen and converts the data into a RAM 6 via an interface 3.
To the image memory unit 6a. The video signal processing device 2 receives the digital value of the combined moving image transferred under the control of the MPU 9 via the interface 3 under the control of the MPU (microprocessor) 9 and converts it into a video signal. The video data is sent to the video device 11 or the like and recorded. On the other hand, one screen of moving image data simulated by the large computer is stored in the moving image memory unit 6b from the video device 11 via the video signal processing device 2. Note that the image data stored in the image memory unit 6a and the moving image memory unit 6b are bit-mapped data on the display screen in a one-to-one correspondence. The color information is stored on three screens as bit data developed into three primary colors.

The ROM 5 stores an actual image extraction processing program 5a, a model video contour extraction processing program 5b, a vertical and horizontal maximum length calculation program 5c, an image enlargement / reduction processing program 5d, a simulation image generation program e, and the like. Thus, these programs are activated and the operation creation processing is performed. In addition, 4 is a bus, 7 is
A keyboard 8 is a CRT display (CR
T). .

The processing procedure for creating a moving image will be described with reference to the flowchart of FIG. 2 and FIG.
In step 1, the real image extraction processing program 5a is started, and the actual video data in the image memory unit 6a is displayed on the CRT 8,
In step 102, the operator displays a real image corresponding to the image of the simulation model on the keyboard 7, for example.
Is specified by the cursor by operating
Then, the luminance and color information of the video part is extracted, the background video is eliminated based on the information, the data of the video part is extracted and transferred from the image memory unit 6a to the real video data unit 6c. . FIG. 3A shows an actual image captured by a video camera, which is bit-expanded and stored in the image memory unit 6a. (B) shows a real image extracted corresponding to the simulation model with the background image removed.

Next, in step 104, the model image contour extraction processing program 5b is started and the moving image memory unit 6b
Model outline data is extracted from the moving image data of
Stored in AM6. FIG. 3C is a moving image generated as a result of the simulation in the case of simulating the flow of the wind hitting the vehicle, and the hatched portion is the portion of the vehicle as a model. (D) shows the contour data. In the next step 105, the vertical and horizontal maximum length calculation program 5c is started, and the vertical and horizontal maximum lengths of the extracted contour data are calculated. Then, the actual video data section 6
The image data of c is also processed as contour data, and the maximum length in the vertical and horizontal directions is calculated.

Next, at step 106, the image enlargement / reduction processing program 5d is started, and the vertical and horizontal lengths L and H of the image data of the actual video data portion 6c are set to the maximum vertical and horizontal lengths LR and HR of the outline data of the moving image. 3 (e) is performed as shown in FIG. 3 (e), and is stored again in the actual video data section 6c in step 107.

In the next step 108, the simulation image display program 6e is started to control the video signal processing device 2 to control the video signal processing device 2 so that a moving image memory unit corresponding to one field or one screen of the simulation result video stored in the video device 11. 6b, and the contour data is extracted from the remaining data (FIG. 3 (f)) extracted by the contour extraction in step 109.
The image is synthesized by replacing the image data of (e), and in step 110, the synthesized image data is sent to the video signal processing device 2 to be converted into a video signal, and the image of FIG. Record as video on another video device.

Therefore, if the composite video recorded on the video device 11 is displayed, it is possible to obtain a video in which the simulation model as shown in FIG.

[0015]

As is apparent from the above description, according to the present invention, the video data portion corresponding to the model shape is extracted from the actual imaging data, and this video is extracted with the maximum length of the model shape in the vertical direction. Since the original video is fitted into the model shape of the original video in accordance with the maximum length in the horizontal direction, if the video information is generated, the simulation video of the generated video becomes a real image in the model part. An image having the actual color and shape and obtained from the calculation result of the simulation is stored as it is as a background image without losing its state. As a result, it is possible to obtain a video of a video that is easy to understand and that is close to reality, even if the user is not an expert.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a simulation image processing method according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of the processing procedure.

FIG. 3 is an explanatory diagram of the processing contents.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Video camera, 2 ... Video signal processing apparatus, 3 ... Interface, 4 ... Bus, 5 ... ROM, 5a ... Real image extraction processing program, 5b ... Model video contour extraction processing program, 5c ... Vertical and horizontal maximum length calculation program, 5d: image enlargement / reduction processing program, 6: RAM, 6a: image memory unit, 6b: moving image memory unit, 6c: actual video data unit,
7 keyboard, 8 CRT display, 9 MP
U, 10 ... Image data processing device.

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) G06F 19/00 G06T 13/00 G06T 15/70

Claims (2)

(57) [Claims] 1. A simulation image processing method for generating and displaying moving image information of a physical phenomenon with respect to a model shape obtained by combining a simulation result calculated by a numerical computer with respect to the physical phenomenon with respect to a certain model shape and the model shape, A real image corresponding to the model shape is captured by a video camera, a video data portion corresponding to the model shape is extracted from the captured data, and a maximum length in a vertical direction and a maximum length in a horizontal direction of the extracted video data portion are extracted. The image data portion is enlarged or reduced so that the image data portion is substantially equal to the maximum length in the vertical direction and the maximum length in the horizontal direction of the model shape, and the image data of the real image is generated. Generates the moving image information by replacing video data with a video data portion corresponding to the model shape Simulation image processing method comprising Rukoto. 2. Extraction of a video data portion corresponding to the model shape from the imaging data is performed by removing background video surrounding the designated video, and the maximum length of the model shape in the vertical direction is obtained. The length and maximum length in the lateral direction are
2. The simulation image processing method according to claim 1, wherein a video of a model shape is extracted by extracting a contour from the moving image information obtained as a result of the simulation.