JPH11120338A - Image processing evaluation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image processing evaluation system capable of sufficiently evaluating an image processing of a flying object. SOLUTION: A position of a viewpoint, posture angle information of the flying body are inputted in a low speed image generator 6 with a simulation computer 2, a low speed image frame 15 is outputted and inputted in a high speed image converter 20 together with the position of the viewpoint, a posture angle signal to be outputted from the simulation computer 2. This high speed image converter 20 segments a part of an area of the low speed image frame 15, and converts the frame 15 into a high speed image frame 14 by the image segmented position correction signal calculated from the position of the viewpoint and the posture angle signal, the high speed image frame 14 is inputted as an outputted image signal 18 in a flying object control circuit 3 and the image processing to simulate exact tracking of a high speed transfer target of the flying object is evaluated by the high speed image converter 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flying object image processing evaluation system for testing and evaluating a system for tracking and attacking a high speed moving object of a flying object, and analyzing the movement performance of the flying object. .

[0002]

2. Description of the Related Art Conventionally, an image processing evaluation system has been frequently used for test evaluation of a system for tracking and attacking a moving target of a flying object and for analyzing movement performance of the flying object.

The image processing evaluation system generates an image of a moving target by using a computer-aided view image generator, captures the image directly from the view image generator in the form of an electric signal, and transmits the image in real time to a control section behind the ground. In order to control flight operations such as tracking the target of movement of the flying object, image processing evaluation is performed by transmitting the signal to a flying object control circuit in real time, and the result is used for accurate test evaluation. FIG. 5 shows a general system diagram of the conventional flying object image processing evaluation system.

That is, as an image processing evaluation system, the position and attitude angle signal 4 of the viewpoint of the flying object are input to the high-speed image generation device 1 via the simulation computer 2 as an image signal by the imaging means provided in the flying object. The input image signal is input to the flying object control circuit 3 as a high-speed frame rate image 5, and the flying object control circuit 3
A flight simulation is performed by simulation operation control of the flight of the flying object to the moving target. The high-speed image generator 1 is configured to have a frame rate of, for example, about 240 Hz per second in order to improve signal processing capability in moving image processing.

On the other hand, there is a delay for image generation from when the viewpoint position and attitude angle signal 4 of the flying object is input to when the simulation operation control is performed by the high-speed image generation device 1, so that a high-speed image generation is required. Moving target position and the flying object control circuit 3
Causes a deviation from the target position detected by. For this reason, the accuracy of the image is reduced, and an error occurs during transmission. Therefore, it is desired to use an expensive image generating device with a reduced delay time for image generation. In addition, as a flying object guidance device, a two-dimensional detector is fixed to the fuselage, and a space stabilization and tracking loop is formed by electronic processing without possessing a mechanical gimbal mechanism, and guidance of the flying object (Japanese Patent Laid-Open No. Hei 5-18697).
The disclosed technique is not a technique in which a low-speed image generator and a high-speed image converter are provided side by side.

[0006]

In the above-mentioned conventional image processing evaluation system, the image processing evaluation of the flight simulation cannot be sufficiently performed. Therefore, the image frame rate is high in order to improve the accuracy of the image processing, and the image generation rate is high. It requires a high-speed image processing device capable of high-speed image processing with a small delay, and this processing device is not practical because it causes an increase in equipment size and an increase in processing cost, lacks versatility, and is not practical.

The present invention has been made in view of the above-mentioned problems, and has a low-speed image generation device and a high-speed image conversion device, so that the accuracy of image processing under a high-speed image frame at a high image frame rate can be improved. It is an object of the present invention to provide an image processing evaluation system capable of improving the image processing in real time and sufficiently performing the image processing evaluation.

[0008]

In order to achieve the above object, the present invention relates to a flying object image processing and evaluation system, wherein a position and an attitude angle signal of a viewpoint of the flying object are transmitted through a simulation computer. Input to the low-speed image generator, output the low-speed image frame, and input the viewpoint position and attitude angle signal output from the simulation computer to the high-speed image converter, and the high-speed image converter outputs the viewpoint position, A part of the low-speed image frame area is cut out by the image cut-out position correction signal calculated from the attitude angle signal, converted into a high-speed image frame, and the high-speed image frame is input to the flying object control circuit as an output image signal, and the flying image is output. The present invention is characterized in that image processing for simulating accurate tracking of a high-speed moving target of a vehicle is evaluated. It is preferable that the high-speed image conversion device in the image processing evaluation system includes a correction circuit that corrects a transmission time delay caused by image processing.

[0009]

According to the image processing evaluation system configured as described above, since a part of the low-speed image frame is cut out and converted into the high-speed image frame, the accuracy of the output image can be improved and the flying object control can be performed. Operate the circuit with high precision,
The image processing evaluation for simulating the accurate tracking of the high-speed moving target by the flying object can be sufficiently performed, and the test evaluation of the image processing evaluation system can be improved.
In addition, it is possible to avoid an increase in equipment size and an increase in processing cost of the high-speed image processing apparatus.

Further, in the image processing of the visual field image, the movement of the target is corrected in accordance with the deviation generated between the target position generated by the transmission time delay and the target position detected by the flying object control circuit. Since the image processing evaluation is performed using the image transmission delay correction circuit as an accurate output image signal, the test evaluation of the image processing evaluation system as described above can be effectively improved.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a system diagram of the image processing evaluation system, FIG. 2 is a principle diagram of the high-speed image conversion device in the image processing evaluation system of FIG. 1, FIG. 3 is a circuit diagram of the high-speed image conversion device of FIG. 2, and FIG. FIG. 5 is an explanatory diagram showing an example of a low-speed image and a high-speed image in the system.
The same reference numerals are given to members common to the members shown in FIG.
In FIG. 1, reference numeral 10 denotes a flying object image processing evaluation system, which includes a simulation computer 2, a low-speed image generation device 6, a high-speed image conversion device 20, a flying object control circuit 3, and the like as main elements.

The low-speed image generator 6 has a low frame rate of about 30 Hz. The current position and attitude angle signal 4 of the flying object from the simulation computer 2 is input to the image generator 6 and processed into a low-speed image frame signal 7 which is a low-speed frame rate image. Is entered. On the other hand, from the simulation computer 2, the viewpoint equivalent position and posture angle signal corresponding to the current viewpoint position and posture angle signal 4 and the low-speed image frame signal 7 accompanied by the image transmission delay outputted from the low-speed image generator 6. 8 is a high-speed image converter 2
Input to 0. The high-speed image conversion device 20 includes an image transmission delay correction circuit 30, which will be described later.
The low-speed image frame 15 which is a part of the area is cut out and converted into a high-speed image frame 14 which is a high-speed frame rate image having a frame rate of about 240 Hz, for example, and an output image signal 18 of the high-speed image frame 14 is a flying object control circuit. 3 is input.

In FIG. 2, the frame memory 12 is written by the low-speed image frame 7 signal, and the low-speed image frame 15 which is a part of the area of the frame memory 12 is cut out by the image cut-out position correction signal 31 and converted into the high-speed image frame 14. And the high-speed image frame 14
Is output. The low-speed image frame 15 and the high-speed image frame 14 described above are stored in the entire memory area of the frame memory 12, and only the output image signal 18 of the high-speed image frame 14 is input to the flying object control circuit 3. Is done.

Further, FIG. 2 will be described in detail. The low-speed image frame signal 7 from the low-speed image generating device 6 has an image transmission delay Δθ = θ−θ ′, and the current viewpoint position and attitude angle signal 4 from the simulation computer 2 has no image transmission delay. As the current value θ.
On the other hand, the viewpoint equivalent position / posture angle signal 8 is the viewpoint position / posture angle signal equivalent to the low-speed image frame signal 7 output from the low-speed image generation device 6 as described above, and before the image transmission delay Δθ. It is indicated by a certain information value θ ′. The position of the viewpoint consisting of the current value θ, the posture angle signal 4 and the equivalent position of the viewpoint with the image transmission delay Δθ, the posture angle signal 8 are
Each is input to the image transmission delay correction circuit 30, subjected to a subtraction operation, and an image cutout position correction signal 31 is output as a subtraction value (θ−θ ′). In FIG. 3, a 30 Hz control signal 9a and a 240 Hz control signal 9b are separated and generated by a timing control unit 9 generating a clock which is a reference timing of the entire image processing evaluation system 10 in the simulation system. Write address control 1 according to timing by control signal 9a
1, an address is output to the memory input control 13 based on the low-speed image frame signal 7, and the frame memory 12
Is written to.

An address is output to the memory output control 16 under the read address control 22 at a timing according to the control signal 9b and the image cutout position correction signal 31,
A part of the area of the frame memory 12 is cut out and converted into a high-speed image frame 14, and an output image signal 18 of the high-speed image frame 14 is output. in this way,
By providing the image transmission delay correction circuit 30 in the high-speed image conversion device 20, the subtraction value (θ−θ ′) by the image cutout position correction signal 31 and the image generation delay θ ′ in the low-speed image frame signal 7 are added. Then, the output image signal 18 is input to the flying object control circuit 3 as an accurate signal in which the image transmission delay is corrected.

FIG. 4A is an explanatory diagram showing an example of a low-speed image, and FIG. 4B is an explanatory diagram showing an example of a high-speed image. In FIG. 4A, the frame rate is 30 Hz.
An example of a low-speed image of the low-speed image frame 15-1,
Reference numeral 15-2 denotes the current point and the low-speed image frame 15 after 1/30 seconds, respectively, and a region surrounded by a dotted line in the figure is a high-speed image frame 14 in FIG.
It corresponds to. The low-speed image frames 15-1 and 15
At -2, the current position of the viewpoint P, which is the target of movement of the flying object, and the attitude angle signal 4 are scanned.

In FIG. 4B, a frame rate 90
Hz high-speed image, the low-speed image frame 1
The area surrounded by the dotted line 5 is cut out and converted. High-speed image frames 14-1, 14-2, ..., 14
Reference numeral -6 indicates the high-speed image frame 14 at the present time and every 1/90 second, the current position of the viewpoint P and the attitude angle signal 4 are scanned, and the image processing evaluation is performed with high accuracy. It is shown that. In this way,
The output image signal 18 of the high-speed image frame 14 is input to the flying object control circuit 3 to operate the control circuit 3 with high accuracy and perform image processing evaluation for simulating accurate tracking of a high-speed moving target by the flying object. It can be performed sufficiently, and the test evaluation of the image evaluation system can be improved. The present invention can be applied to an aircraft flight simulator, a game machine that generates images in real time, and the like, in addition to the above embodiment.

[0018]

As described above, according to the present invention, the accuracy of the output image of the image processing can be improved, the flying object control circuit can be operated with high accuracy, and the accurate movement of the high speed moving target by the flying object can be improved. Image processing evaluation for simulating tracking can be sufficiently performed, and test evaluation of the image evaluation system can be improved. In addition, it is possible to avoid an increase in equipment size and an increase in processing cost of the high-speed image processing apparatus.

Further, in the image processing of the visual field image, the movement of the target is corrected in accordance with the deviation between the target position generated due to the image generation delay and the target position detected by the flying object control circuit. Since the image processing evaluation is performed using the image transmission delay correction circuit to obtain an accurate output image signal, the test evaluation of the image processing evaluation system can be effectively improved.

[Brief description of the drawings]

FIG. 1 is a system diagram of an image processing evaluation system according to the present invention.

FIG. 2 is a principle diagram of a high-speed image conversion device in the image processing evaluation system of FIG. 1;

FIG. 3 is a circuit diagram of the high-speed image conversion device of FIG. 2;

FIG. 4 is an explanatory diagram showing an example of a low-speed image and a high-speed image in the image processing evaluation system of the present invention.

FIG. 5 is a general system diagram of a conventional flying object image processing evaluation system.

[Explanation of symbols]

 Reference Signs List 2 simulation computer 3 flying object control circuit 6 low-speed image generator 10 image processing evaluation system 14 high-speed image frame 15 low-speed image frame 20 high-speed image converter 31 image cutout position correction signal

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI G06F 15/20 D (72) Inventor Akira Akiyama 2755-4 Yamamiyacho, Kofu-shi, Yamanashi Prefecture (72) Inventor Yasuhiko Sasaki Kakamigahara-shi, Gifu Prefecture 1 Kawasaki-cho, Kawasaki Heavy Industries, Ltd., Gifu Plant Co., Ltd. (72) Inventor Tadashi Okazaki 1, Kawasaki-cho, Kakamigahara City, Gifu Prefecture Kawasaki Heavy Industries, Ltd., Gifu Plant Co., Ltd.

Claims (2)

[Claims] 1. A flying object image processing and evaluation system, comprising: inputting a position and an attitude angle signal of a viewpoint of a flying object to a low-speed image generating device via a simulation computer to output a low-speed image frame; The viewpoint position and attitude angle signal output from the simulation computer are input to the high-speed image conversion device together with the high-speed image conversion device, and the high-speed image conversion device calculates the low-speed image frame based on the image cutout position correction signal calculated from the viewpoint position and attitude angle signal. Image processing that cuts out a part of the area and converts it into a high-speed image frame, inputs the high-speed image frame to the flying object control circuit as an output image signal, and simulates accurate tracking of the high-speed moving target of the flying object An image processing evaluation system, wherein the evaluation is performed. 2. The image processing evaluation system according to claim 1, wherein the high-speed image conversion device includes a correction circuit for correcting a transmission time delay caused by the image processing.