JP2009236545A - Image processing apparatus, image processing system, image processing method, and image processing program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus which uses a RFID tag, and the like, that actively radiates an electric wave, to easily detect a specific position from a reproduced image of a synthetic aperture rader and which corrects the reproduced image according to the position. <P>SOLUTION: An image processing apparatus 510 acquires electric waves transmitted from a RFID tag 300a, according to pulse waves from a synthetic aperture radar 200 and the reflected waves of pulse wave from the surface of the earth as reflected wave data from reflected wave database 501. It then acquires, from the reflected waves, the database identifier data transmitted via an electric wave from the RFID tag 300a. It also acquires installation data, corresponding to the identifier data of the RFID tag 300a from position database 502 and then acquires position data from an electronic reference point 400a represented by the installation data. The image processing apparatus 510 produces an image of the surface of the earth, based on the reflected wave data and corrects the image based on the position data. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an image processing apparatus, an image processing system, an image processing method, and an image processing program. The present invention particularly relates to a method for detecting a position of a synthetic aperture radar image using an active RFID (Radio Frequency Frequency Identification) tag.

Conventionally, as a method for detecting a specific position on the ground surface from a synthetic aperture radar (SAR) reproduction image, a corner reflector (reflector) that reflects a pulse wave from the synthetic aperture radar is previously installed on the ground surface. In some cases, the position of the point is specified by surveying (for example, see Patent Documents 1 and 2). As another method, there is a method in which a point having a high reflection intensity is identified from a reproduced image, and the position information of the point is read from a map and collated (for example, see Patent Document 3).
JP 2001-91650 A Japanese Patent Laid-Open No. 2004-157397 JP 2003-173449 A

  In the former method, on-site adjustments (such as procedures for obtaining permission from administrative agencies, corporations, individuals, etc. that manage the installation location) are performed for the installation of corner reflectors, or on-site surveys using GPS (Global Positioning System) etc. There is a problem that it takes time to prepare before obtaining a synthetic aperture radar image because it is necessary to determine the direction of emission of the pulse wave from the synthetic aperture radar according to the direction of the corner reflector. Further, the latter method has a problem that it is not easy to detect an accurate position from the synthetic aperture radar image because the reading accuracy of the position information is not sufficient.

  The present invention easily detects a specific position from a reproduction image of a synthetic aperture radar using an RFID (Radio Frequency Frequency Identification) tag or the like that actively radiates radio waves, and reproduces it according to the position. An object is to provide an apparatus for correcting an image.

An image processing apparatus according to an aspect of the present invention includes:
A radio wave generated from a radio wave in response to a pulse wave from above and transmitting identifier data by the radio wave; a reflected wave of the pulse wave from a ground surface including a point where the radio communication apparatus is installed; A reflected wave data acquisition unit that acquires the reflected wave data from the reflected wave database that stores the reflected wave data,
From the reflected wave data acquired by the reflected wave data acquisition unit, an identifier data acquisition unit that acquires identifier data transmitted by radio waves from the wireless communication device;
Position data corresponding to the identification data acquired by the identifier data acquisition unit from a position database that stores the identifier data of the wireless communication apparatus and position data indicating the position of the point where the wireless communication apparatus is installed in association with each other. A position data acquisition unit to acquire;
Based on the reflected wave data acquired by the reflected wave data acquisition unit, an image of the ground surface including the point where the wireless communication device is installed is generated, and based on the position data acquired by the position data acquisition unit, the ground surface And an image processing unit for correcting the image.

The wireless communication device is attached to each of a plurality of electronic reference points for observing a position based on a positioning signal from a positioning satellite,
In place of the position data, the position database stores installation data indicating an electronic reference point to which the wireless communication device is attached,
The position data acquisition unit acquires installation data corresponding to the identification data acquired by the identifier data acquisition unit from the position database, and uses an observation result of the position from the electronic reference point indicated by the installation data as position data. It is characterized by acquiring.

The wireless communication device is attached to each of a plurality of electronic reference points for observing a position based on a positioning signal from a positioning satellite,
The reflected wave database stores the reception time of radio waves from the wireless communication device as a part of reflected wave data,
The position database stores, as position data, a history of position observation results from an electronic reference point provided with the wireless communication device,
The position data acquisition unit acquires the reception time of radio waves from the wireless communication device from the reflected wave data acquired by the reflected wave data acquisition unit, and the identification data acquired by the identifier data acquisition unit from the position database Among the position data corresponding to, position data indicating the observation result of the position at the reception time is acquired.

The wireless communication device includes an environmental sensor for observing the surrounding environment,
The image processing apparatus further includes:
An environmental data acquisition unit for acquiring environmental observation results as environmental data from the environmental sensor;
The image processing unit processes an image of a ground surface including a point where the wireless communication device is installed based on environment data acquired by the environment data acquisition unit.

The environmental sensor observes the weather as the surrounding environment,
The image processing unit generates an image in which a weather map is superimposed on an image of a ground surface including a point where the wireless communication device is installed, based on environment data acquired by the environment data acquisition unit.

An image processing system according to an aspect of the present invention includes:
A wireless communication device that receives a pulse wave from above, generates a radio wave according to the pulse wave, and transmits identifier data by the radio wave;
A synthetic aperture radar mounted on a flying object, which transmits a pulse wave during the flight of the flying object, and the pulse from the ground surface including the radio wave from the wireless communication device and the point where the wireless communication device is installed A synthetic aperture radar that receives the reflected wave of the wave;
A reflected wave database for storing radio waves and reflected waves received by the synthetic aperture radar as reflected wave data;
A location database that stores the identifier data of the wireless communication device and location data indicating the location of the location where the wireless communication device is installed;
Reflected wave data acquisition unit for acquiring reflected wave data from the reflected wave database, and identifier data acquisition for acquiring identifier data transmitted by radio waves from the wireless communication device, from reflected wave data acquired by the reflected wave data acquisition unit Corresponding to the identification data acquired by the identifier data acquisition unit from the location database that stores the identifier data of the wireless communication device and the location data indicating the location of the point where the wireless communication device is installed in association with each other Based on the reflected wave data acquired by the reflected wave data acquiring unit, the position data acquiring unit that acquires position data generates an image of the ground surface including the point where the wireless communication device is installed, and the position data acquiring unit And an image processing device that includes an image processing unit that corrects an image of the ground surface based on the position data acquired by the To.

An image processing system according to another aspect of the present invention includes:
A wireless communication device that receives a pulse wave from above, generates a radio wave according to the pulse wave, and transmits position data by the radio wave;
A synthetic aperture radar mounted on a flying object, which transmits a pulse wave during the flight of the flying object, and the pulse from the ground surface including the radio wave from the wireless communication device and the point where the wireless communication device is installed A synthetic aperture radar that receives the reflected wave of the wave;
A reflected wave database for storing radio waves and reflected waves received by the synthetic aperture radar as reflected wave data;
A reflected wave data acquisition unit that acquires reflected wave data from the reflected wave database, and position data acquisition that acquires position data transmitted by radio waves from the wireless communication device, from the reflected wave data acquired by the reflected wave data acquisition unit And an image of the ground surface including the point where the wireless communication device is installed based on the reflected wave data acquired by the reflected wave data acquisition unit, and based on the position data acquired by the position data acquisition unit And an image processing device including an image processing unit that corrects the image of the ground surface.

An image processing method according to one aspect of the present invention includes:
The reflected wave data acquisition unit of the image processing device generates a radio wave in response to a pulse wave from the sky, and transmits the identifier data by the radio wave, and the location where the wireless communication device is installed. A first step of obtaining the reflected wave data from a reflected wave database that stores the reflected wave of the pulse wave from the ground surface including the reflected wave data;
A second step in which an identifier data acquisition unit of the image processing device acquires identifier data transmitted by radio waves from the wireless communication device, from the reflected wave data acquired in the first step;
From the position database in which the position data acquisition unit of the image processing apparatus stores the identifier data of the wireless communication apparatus and the position data indicating the position of the point where the wireless communication apparatus is installed in association with each other in the second step. A third step of acquiring position data corresponding to the acquired identification data;
The image processing unit of the image processing device generates an image of the ground surface including the point where the wireless communication device is installed based on the reflected wave data acquired in the first step, and is acquired in the third step. And a fourth step of correcting the image of the ground surface based on the position data.

An image processing program according to an aspect of the present invention includes:
A radio wave generated from a radio wave in response to a pulse wave from above and transmitting identifier data by the radio wave; a reflected wave of the pulse wave from a ground surface including a point where the radio communication apparatus is installed; A reflected wave data acquisition procedure for acquiring the reflected wave data from the reflected wave database stored as reflected wave data;
From the reflected wave data acquired by the reflected wave data acquisition procedure, an identifier data acquisition procedure for acquiring identifier data transmitted by radio waves from the wireless communication device;
Position data corresponding to the identification data acquired by the identifier data acquisition procedure from a position database that stores the identifier data of the wireless communication apparatus and position data indicating the position of the point where the wireless communication apparatus is installed in association with each other. A position data acquisition procedure to be acquired;
Based on the reflected wave data acquired by the reflected wave data acquisition procedure, an image of the ground surface including the point where the wireless communication device is installed is generated, and based on the position data acquired by the position data acquisition procedure, An image processing procedure for correcting the image is executed by a computer.

The wireless communication device is attached to each of a plurality of electronic reference points for observing a position based on a positioning signal from a positioning satellite,
In place of the position data, the position database stores installation data indicating an electronic reference point to which the wireless communication device is attached,
The position data acquisition procedure acquires installation data corresponding to the identification data acquired by the identifier data acquisition procedure from the position database, and uses an observation result of the position from the electronic reference point indicated by the installation data as position data. It is characterized by acquiring.

The wireless communication device is attached to each of a plurality of electronic reference points for observing a position based on a positioning signal from a positioning satellite,
The reflected wave database stores the reception time of radio waves from the wireless communication device as a part of reflected wave data,
The position database stores, as position data, a history of position observation results from an electronic reference point provided with the wireless communication device,
The position data acquisition procedure acquires the reception time of radio waves from the wireless communication device from the reflected wave data acquired by the reflected wave data acquisition procedure, and the identification data acquired by the identifier data acquisition procedure from the position database. Among the position data corresponding to, position data indicating the observation result of the position at the reception time is acquired.

The wireless communication device includes an environmental sensor for observing the surrounding environment,
The image processing program further includes:
Causing the computer to execute an environmental data acquisition procedure for acquiring environmental observation results as environmental data from the environmental sensor;
The image processing procedure is characterized in that an image of a ground surface including a point where the wireless communication device is installed is processed based on the environmental data acquired by the environmental data acquisition procedure.

The environmental sensor observes the weather as the surrounding environment,
The image processing procedure generates an image in which a weather map is superimposed on an image of a ground surface including a point where the wireless communication device is installed, based on environment data acquired by the environment data acquisition procedure.

  According to one aspect of the present invention, using a wireless communication device that generates a radio wave in response to a pulse wave from the sky and transmits identifier data using the radio wave, the location where the radio wave and the wireless communication device are installed The position of the point where the wireless communication device is installed is easily detected from the image of the ground surface generated from the reflected wave of the pulse wave from the ground surface including the image, and the image of the ground surface is corrected according to the position. An image processing apparatus can be provided.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Embodiment 1 FIG.
FIG. 1 is an overall configuration diagram of an image processing system 100 according to the present embodiment.

  In FIG. 1, the image processing system 100 includes a synthetic aperture radar 200, RFID (Radio Frequency Frequency Identification) tags 300a, b, c, electronic reference points 400a, b, c, and a synthetic aperture radar image processing facility 500. In this figure, three RFID tags 300a, b, c and three electronic reference points 400a, b, c are shown, but there may be one, two, or four or more, respectively.

  First, the synthetic aperture radar 200 will be described.

  Synthetic aperture radar 200 is mounted on a flying object such as an aircraft or an artificial satellite. The synthetic aperture radar 200 irradiates a microwave (electromagnetic wave having a wavelength of about 1 mm to 1 m) toward the ground surface at a right angle (range direction) to the traveling direction (azimuth direction) of the flying object, and returns from the observation object. Receives the bounce of electromagnetic waves. Since an image of the ground surface can be obtained from the received signal, the synthetic aperture radar 200 is also called an image radar or an imaging radar. Synthetic aperture radar 200 is effective for collecting information at night, when it is difficult to use an optical sensor, during rainy or cloudy weather, or when the ground surface is covered with volcanic plume.

  Normally, the synthetic aperture radar 200 irradiates the ground surface with a pulse wave with a beam width (observation width) of about 10 km when mounted on an aircraft and about 60 km when mounted on an artificial satellite, and receives the reflected wave. By doing so, the data of the ground surface is acquired in a band shape. Since the resolution in the azimuth direction is determined by the beam width, and the beam width is inversely proportional to the antenna length, conventional radar has attempted to increase the resolution by increasing the actual aperture length of the antenna. However, since the platform is limited, in the synthetic aperture radar 200, the antenna length is equivalently increased by signal processing to achieve high resolution. In other words, the synthetic aperture radar 200 improves the resolution in the azimuth direction by synthesizing received signals by signal processing and acquiring data with a large antenna. Therefore, in the present embodiment, it is desirable to use the synthetic aperture radar 200, but this may be replaced with another image radar.

  In the present embodiment, the synthetic aperture radar 200 transmits a pulse wave (radiation pulse) from the synthetic aperture radar antenna 201 to the ground surface during the flight of the flying object, and synthesizes the reflected wave of the pulse wave from the ground surface. Received by the aperture radar antenna 201. When at least one of the locations where the RFID tags 300a, b, c are installed is included in the area where the pulse wave is transmitted from the synthetic aperture radar antenna 201 on the ground surface (hereinafter, the RFID tag 300a is installed) The synthetic aperture radar 200 receives the radio wave (transmission pulse) from the RFID tag 300a by the synthetic aperture radar antenna 201 similarly to the reflected wave. The synthetic aperture radar 200 outputs the radio wave from the RFID tag 300a and the reflected wave from the ground surface including the point where the RFID tag 300a is installed as reflected wave data (synthetic aperture radar raw data).

  The reflected wave data is data in which signal information such as the amplitude and phase of the radio wave from the RFID tag 300a and the reflected wave from the ground surface is recorded in time series. FIG. 2 is a signal diagram showing an example of this signal information.

  In FIG. 2, transmission pulse signals S1 to S13 are signals transmitted by the synthetic aperture radar 200 as pulse waves. The reception signals R1 to R13 are signals that the synthetic aperture radar 200 receives as radio waves from the RFID tag 300a. The reception signals A1 to 13 and the reception signals B1 to 13 are signals that the synthetic aperture radar 200 receives as reflected waves from the feature A such as a building and a mountain and the feature B existing on the ground surface. In this example, when the synthetic aperture radar 200 transmits the transmission pulse signal S1 to the ground surface, the reception signal R1 from the RFID tag 300a, the reception signal A1 from the feature A, and the feature B are transmitted. Receive signal B1 is received. The same applies when transmission pulse signals S2 to S13 are transmitted to the ground surface.

  Of the received signals R1 to R13, the first received signal R1 is transmitted from the RFID tag 300a to inform the position of the RFID tag 300a, and the signal strength is higher than the other received signals R2 to 13 (ID signal). Is set high. On the other hand, the received signals R2 to R13 are transmitted from the RFID tag 300a to inform the bit value of ID (identifier) information of the RFID tag 300a, and the signal strength is set according to the bit value (for example, The signal strength is weak or strong if the bit value is 0, and vice versa if the bit value is 1.) Here, the ID information consists of 12 bits, and the RFID tag 300a transmits a signal representing one bit for one transmission pulse signal. However, a signal representing a plurality of bits is transmitted for one transmission pulse signal. Alternatively, a signal representing the position and ID information at the same time may be transmitted. Further, the bit value may be represented by other than the signal strength.

  Next, the RFID tag 300a will be described. Since the RFID tags 300b and 300c are the same as the RFID tag 300a, description thereof is omitted.

  The RFID tag 300a is a tag in which ID information or the like is embedded. Usually, the RFID tag 300a is connected to an RFID reader / writer by wireless communication at a short distance (several centimeters to several meters, depending on a frequency band) using an electromagnetic field or a radio wave. It is for exchanging information. There are two types of tags: passive tags called passive tags and active tags called active tags.

  In this embodiment, an RFID tag 300a that is an example of a wireless communication device is an active tag. The RFID tag 300a is preferably a specific low-power radio station that does not require a radio station license. FIG. 3 is a block diagram showing the configuration of the RFID tag 300a. Note that in this embodiment mode, a wireless communication device other than the RFID tag 300a may be used as long as it can generate radio waves and transmit data using the radio waves.

  In FIG. 3, an RFID tag 300a includes a transmission / reception antenna 301, an RF filter unit 302, a transmission / reception switching unit 303, a reception unit 304, a timer unit 305, a signal processing unit 306, a power supply control unit 307, a transmission unit 308, an amplification unit 309, and a power source. Unit 310, ID setting unit 311, and network interface unit 312.

  The ID setting unit 311 sets ID information of the RFID tag 300a. In the example illustrated in FIG. 2, the ID setting unit 311 can be configured by a dip switch as illustrated in FIG. 4, for example. Here, the ID setting unit 311 is configured so that one bit of ID information can be set for one dip switch. The signal processing unit 306 includes a CPU (Central Processing Unit) and a memory. The CPU reads the ID information set by the ID setting unit 311 and stores it in the memory as identifier data. Further, the CPU receives a pulse wave from above, that is, a pulse wave from the synthetic aperture radar 200 by the transmission / reception antenna 301, and inputs it via the RF filter unit 302, the transmission / reception switching unit 303, the reception unit 304, and the timer unit 305. Then, in accordance with the pulse wave, the identifier data is read from the memory, and radio waves are generated using the power supply control unit 307, the transmission unit 308, the amplification unit 309, the transmission / reception switching unit 303, and the RF filter unit 302, The identifier data is transmitted from the transmission / reception antenna 301 by the radio wave. The CPU transmits arbitrary data to the electronic reference point 400a or receives arbitrary data from the electronic reference point 400a via the router 402 of the electronic reference point 400a described below via the network interface unit 312. You can also.

  Next, the electronic reference point 400a will be described. Since the electronic reference points 400b and 400c are the same as the electronic reference point 400a, description thereof will be omitted.

  The electronic reference point 400a observes the position based on GPS signals (positioning signals) from a GPS satellite group 101 including a plurality of GPS (global positioning system) satellites which are examples of positioning satellites. As the electronic reference point 400a, for example, one of GPS continuous observation points installed at about 1200 locations throughout Japan managed by the Geographical Survey Institute can be used.

  In the present embodiment, an RFID tag 300a is attached to the electronic reference point 400a. The electronic reference point 400 a includes a GPS receiver 401 and a router 402. The electronic reference point 400a receives a GPS signal from the GPS satellite group 101 by the GPS receiver 401, and observes the position based on the GPS signal. The electronic reference point 400 a transmits position data (electronic reference point position information) indicating the position observation result to the synthetic aperture radar image processing facility 500 via the electronic reference point network 102 by the router 402. In addition, the electronic reference point 400a can transmit / receive arbitrary data to / from the RFID tag 300a by the router 402.

  Next, the synthetic aperture radar image processing facility 500 will be described.

  The synthetic aperture radar image processing facility 500 is installed on the ground and includes a reflected wave database 501, a position database 502, and an image processing device 510. It should be noted that the whole or part of the synthetic aperture radar image processing facility 500 can be installed on a flying object on which the synthetic aperture radar 200 is mounted.

  In the reflected wave database 501, the reflected wave data output from the synthetic aperture radar 200 is input and stored via a predetermined communication means or recording medium. That is, the reflected wave database 501 stores radio waves from the RFID tag 300a received by the synthetic aperture radar 200 and reflected waves from the ground surface including the point where the RFID tag 300a is installed as reflected wave data.

  The position database 502 stores the identifier data of the RFID tags 300a, b, c in association with the installation data indicating the electronic reference points 400a, b, c (IDs thereof) to which the RFID tags 300a, b, c are attached. To do. For example, the position database 502 stores installation data indicating the electronic reference point 400a as installation data corresponding to the identifier data of the RFID tag 300a.

  FIG. 5 is a block diagram illustrating a configuration of the image processing apparatus 510.

  5, the image processing apparatus 510 includes a reflected wave data acquisition unit 511, an identifier data acquisition unit 512, a position data acquisition unit 513, and an image processing unit 514. The image processing apparatus 510 includes hardware such as a storage device 521, a processing device 522, an input device 523, and an output device 524. The hardware is used by each unit of the image processing apparatus 510. The reflected wave database 501 and the position database 502 included in the synthetic aperture radar image processing facility 500 may be mounted inside the image processing apparatus 510 by the storage device 521.

  FIG. 6 is a flowchart showing the operation of the image processing apparatus 510 (image processing method according to the present embodiment). Note that the operation of the image processing apparatus 510 may be executed as offline batch processing or real-time processing.

  In FIG. 6, the reflected wave data acquisition unit 511 acquires reflected wave data from the reflected wave database 501 (step S101: reflected wave data acquisition procedure).

  The identifier data acquisition unit 512 acquires the identifier data transmitted by radio waves from the RFID tag 300a, that is, the identifier data of the RFID tag 300a, from the reflected wave data acquired by the reflected wave data acquisition unit 511 (step S102: identifier data). Acquisition procedure). In the example illustrated in FIG. 2, the identifier data acquisition unit 512 extracts the 12-bit ID information of the RFID tag 300a from the reception signals R2 to R13 by the processing device 522. At this time, the identifier data acquisition unit 512 generates an image for displaying the received signal R1 indicating the position of the RFID tag 300a together with the received signals R2 to 13, as shown in FIG. 7, for example, and displays it on the screen by the output device 524 May be. This image can be generated by a process similar to the process of generating a ground image described later by the image processing unit 514.

  The position data acquisition unit 513 acquires installation data corresponding to the identifier data of the RFID tag 300 a acquired by the identifier data acquisition unit 512 from the position database 502. Then, the position data acquisition unit 513 acquires position data (for example, XYZ coordinate values observed at the electronic reference point 400a) from the electronic reference point 400a indicated by the installation data via the electronic reference point network 102. (Step S103: position data acquisition procedure).

  The image processing unit 514 generates an image of the ground surface including the spot where the RFID tag 300a is installed based on the reflected wave data acquired by the reflected wave data acquisition unit 511 (step S104: part of the image processing procedure). In the example illustrated in FIG. 2, the image processing unit 514 generates, for example, an image illustrated in FIG. 8 using the processing device 522. In this image, the position of the RFID tag 300a is shown based on the received signal R1, and the positions of the feature A and the feature B are shown based on the received signal A1 and the received signal B1. At or after the generation of the image of the ground surface, the image processing unit 514 corrects the image of the ground surface based on the position data acquired by the position data acquisition unit 513 (step S105: part of the image processing procedure). For example, when generating an image in which a map is superimposed on an image of the ground surface, if the XYZ coordinate value and the latitude / longitude of the point where the RFID tag 300a is installed are indicated by the position data, the image processing unit 514 will display the XYZ coordinate. The coordinate system of the image of the ground surface and the map coordinate system can be accurately matched by the processing device 522 based on the value and the latitude and longitude. The image processing unit 514 uses the three or four points as a reference other than the point where the RFID tag 300a is installed, such as the point where the RFID tags 300b and 300c are installed, so that the deviation or distortion of the image on the ground surface is made. Can be corrected better. Further, the image processing unit 514 acquires inertial data during flight from a flying object on which the synthetic aperture radar 200 is mounted via a predetermined communication means or recording medium, You may correct | amend the distortion of the image of a ground surface.

  FIG. 9 is a diagram illustrating an example of a hardware configuration of the image processing apparatus 510.

  In FIG. 9, an image processing device 510 is a computer, and includes a display device 901 having a CRT (Cathode / Ray / Tube) or LCD (Liquid Crystal Display) display screen, a keyboard 902 (K / B), a mouse 903, and an FDD 904 ( Hardware such as a flexible disk, a drive, a CDD 905 (Compact, a disk, and a drive), and a printer device 906 are provided, and these are connected by a cable or a signal line.

  The image processing apparatus 510 includes a CPU 911 that executes a program. The CPU 911 is an example of the processing device 522. The CPU 911 includes a ROM 913 (Read / Only / Memory), a RAM 914 (Random / Access / Memory), a communication board 915, a display device 901, a keyboard 902, a mouse 903, an FDD904, a CDD905, a printer device 906, and a magnetic disk. It is connected to the device 920 and controls these hardware devices. Instead of the magnetic disk device 920, a storage medium such as an optical disk device or a memory card reader / writer may be used.

  The RAM 914 is an example of a volatile memory. The storage media of the ROM 913, the FDD 904, the CDD 905, and the magnetic disk device 920 are an example of a nonvolatile memory. These are examples of the storage device 521. A communication board 915, a keyboard 902, a mouse 903, an FDD 904, a CDD 905, and the like are examples of the input device 523. The communication board 915, the display device 901, the printer device 906, and the like are examples of the output device 524.

  The communication board 915 is connected to a LAN (local area network) or the like. The communication board 915 is not limited to a LAN, but is the Internet, or an IP-VPN (Internet, Protocol, Private, Network), a wide area LAN, a WAN (Wide Area Network) such as an ATM (Asynchronous, Transfer, Mode) network, or the like. It does not matter if it is connected to. LAN, the Internet, and WAN are examples of networks.

  The magnetic disk device 920 stores an operating system 921 (OS), a window system 922, a program group 923, and a file group 924. The programs in the program group 923 are executed by the CPU 911, the operating system 921, and the window system 922. The program group 923 stores a program for executing a function described as “˜unit” in the description of the present embodiment. The program is read and executed by the CPU 911. The file group 924 includes data and information described as “˜data”, “˜information”, “˜ID (identifier)”, “˜flag”, and “˜result” in the description of this embodiment. Signal values, variable values, and parameters are stored as items of “˜file”, “˜database”, and “˜table”. The “˜file”, “˜database”, and “˜table” are stored in a storage medium such as a disk or a memory. Data, information, signal values, variable values, and parameters stored in a storage medium such as a disk or memory are read out to the main memory or cache memory by the CPU 911 via a read / write circuit, and extracted, searched, referenced, compared, and calculated. Used for processing (operation) of the CPU 911 such as calculation / control / output / printing / display. Data, information, signal values, variable values, and parameters are temporarily stored in the main memory, cache memory, and buffer memory during processing of the CPU 911 such as extraction, search, reference, comparison, calculation, control, output, printing, and display. Is remembered.

  In addition, the arrows in the block diagrams and flowcharts used in the description of this embodiment mainly indicate input / output of data and signals, and the data and signals are the memory such as the RAM 914, the flexible disk (FD) of the FDD 904, and the compact of the CDD 905. Recording is performed on a recording medium such as a disk (CD), a magnetic disk of the magnetic disk device 920, another optical disk, a mini disk (MD), or a DVD (Digital Versatile Disc). Data and signals are transmitted by a bus 912, a signal line, a cable, and other transmission media.

  In addition, what is described as “˜unit” in the description of this embodiment may be “˜circuit”, “˜device”, “˜device”, and “˜step”, “˜process”. , “˜procedure”, and “˜processing”. That is, what is described as “˜unit” may be realized by firmware stored in the ROM 913. Alternatively, it may be realized only by software, or only by hardware such as an element, a device, a board, and wiring, or a combination of software and hardware, and further by a combination of firmware. Firmware and software are stored as programs in a recording medium such as a magnetic disk, flexible disk, optical disk, compact disk, minidisk, or DVD. This program is read by the CPU 911 and executed by the CPU 911. That is, the program causes the computer to function as “to part” described in the description of the present embodiment. Alternatively, it causes the computer to execute the procedures and methods described in the description of the present embodiment.

  As described above, according to the present embodiment, the position of the ground reference point can be easily specified from the reproduced image of the synthetic aperture radar 200 using the active RFID tag 300a. Further, according to the present embodiment, the image analysis result of the synthetic aperture radar 200 can be easily corrected based on the position information of the active RFID tag 300a. Therefore, in the present embodiment, an active RFID tag 300a that radiates radio waves is permanently installed at the electronic reference point 400a where the GPS receiver 401a is installed. The synthetic aperture radar antenna 201 of the synthetic aperture radar 200 receives the radio wave from the RFID tag 300a, the identification information of the RFID tag 300a is read by the image processing device 510 of the synthetic aperture radar image processing facility 500, and the electronic reference point 400a. The position of the RFID tag 300a is specified by collating with the measured positioning information. In the image processing apparatus 510 of the synthetic aperture radar image processing facility 500, the position of the reproduced image of the synthetic aperture radar 200 is corrected based on this position.

Embodiment 2. FIG.
In the present embodiment, differences from the first embodiment will be mainly described.

  In the first embodiment, the position database 502 associates the identifier data of the RFID tags 300a, b, c with the installation data indicating the electronic reference points 400a, b, c to which the RFID tags 300a, b, c are attached. I remembered it. On the other hand, in the present embodiment, the position database 502 replaces the installation data with the position data indicating the position of the place where the RFID tags 300a, b, c are installed as the identifier data of the RFID tags 300a, b, c. Store in association with each other. For example, the position database 502 stores position data indicating XYZ coordinate values and latitude / longitude of a point where the RFID tag 300a is installed as position data corresponding to the identifier data of the RFID tag 300a.

  FIG. 10 is a flowchart showing the operation of the image processing apparatus 510 (image processing method according to the present embodiment).

  10, the reflected wave data acquisition unit 511 acquires reflected wave data from the reflected wave database 501 in the same manner as in step S101 of FIG. 6 (step S201: reflected wave data acquisition procedure).

  The identifier data acquisition unit 512 acquires the identifier data of the RFID tag 300a from the reflected wave data acquired by the reflected wave data acquisition unit 511, similarly to step S102 of FIG. 6 (step S202: identifier data acquisition procedure).

  The position data acquisition unit 513 acquires position data corresponding to the identifier data of the RFID tag 300a acquired by the identifier data acquisition unit 512 from the position database 502 (step S203: position data acquisition procedure).

  The image processing unit 514 generates an image of the ground surface including the point where the RFID tag 300a is installed based on the reflected wave data acquired by the reflected wave data acquisition unit 511, similarly to step S104 of FIG. 6 (step S204). : Part of image processing procedure). At or after the generation of the image of the ground surface, the image processing unit 514 corrects the image of the ground surface based on the position data acquired by the position data acquisition unit 513, similarly to step S105 of FIG. 6 (step S205: Part of image processing procedure).

  As described above, according to the present embodiment, as in the first embodiment, the position of the ground reference point can be easily specified from the reproduced image of the synthetic aperture radar 200 using the active RFID tag 300a. can do. Further, according to the present embodiment, the image analysis result of the synthetic aperture radar 200 can be easily corrected based on the position information of the active RFID tag 300a. In the present embodiment, as in the first embodiment, the active RFID tag 300a is used. Therefore, as in the conventional case, the field adjustment is performed for the installation of the corner reflector, or the field survey using the GPS or the like is performed. In addition, since it is not necessary to determine the emission direction of the pulse wave from the synthetic aperture radar 200 in accordance with the direction of the corner reflector, the cost and labor can be reduced.

Embodiment 3 FIG.
In the present embodiment, differences from the first embodiment will be mainly described.

  In the first embodiment, the position database 502 associates the identifier data of the RFID tags 300a, b, c with the installation data indicating the electronic reference points 400a, b, c to which the RFID tags 300a, b, c are attached. I remembered it. On the other hand, in the present embodiment, the position database 502 stores the observation results of the positions by the electronic reference points 400a, b, c to which the RFID tags 300a, b, c are attached instead of the installation data or together with the installation data. The history is stored as position data. For example, the position database 502 stores a history of observation results of positions by the electronic reference point 400a as position data corresponding to the identifier data of the RFID tag 300a.

  In order to store the history of the observation results of the positions by the electronic reference points 400a, 400b, 400c in the position database 502, the position data acquisition unit 513 of the image processing apparatus 510 may perform the collection process. For example, the position data acquisition unit 513 can use an electronic reference point data providing service of the Geographical Survey Institute. In this case, the position data acquisition unit 513 collects the history of the observation results of the positions based on the electronic reference points 400a, 400b, and 400c from the database of the Geospatial Information Authority of Japan via the Internet, and stores it as position data in the position database 502. . Further, for example, the position data acquisition unit 513 can directly collect the observation results of the positions from the electronic reference points 400a, 400b, and c, as in the first embodiment. In this case, the position data acquisition unit 513 acquires installation data corresponding to the identifier data of the RFID tags 300a, 300b, and 300c from the position database 502. And the position data acquisition part 513 acquires the observation result of a position at a fixed time interval via the electronic reference point network 102 from the electronic reference points 400a, b, c indicated by the respective installation data. Stored in the position database 502 as position data. For example, if a computer system including a memory for recording a history of position observation results is attached to the electronic reference points 400a, 400b, 400c, the position data acquisition unit 513 is The history of the observation results of the positions by the electronic reference points 400a, b, c can be collected. In this case, the position data acquisition unit 513 acquires installation data corresponding to the identifier data of the RFID tags 300a, 300b, and 300c from the position database 502. Then, the position data acquisition unit 513 acquires the history of position observation results via the electronic reference point network 102 from the computer system attached to the electronic reference points 400a, 400b, and 400c indicated by the respective installation data. And stored in the position database 502 as position data.

  In the present embodiment, the reflected wave data output from the synthetic aperture radar 200 includes the reception time of the radio wave from the RFID tag 300a. Therefore, the reflected wave database 501 includes the radio wave from the RFID tag 300a received by the synthetic aperture radar 200, the reflected wave from the ground surface including the point where the RFID tag 300a is installed, and the reception time. Store as data.

  FIG. 11 is a flowchart showing the operation of the image processing apparatus 510 (image processing method according to the present embodiment).

  In FIG. 11, the reflected wave data acquisition unit 511 acquires reflected wave data from the reflected wave database 501 as in step S <b> 101 of FIG. 6 (step S <b> 301: reflected wave data acquisition procedure).

  The identifier data acquisition unit 512 acquires the identifier data of the RFID tag 300a from the reflected wave data acquired by the reflected wave data acquisition unit 511, similarly to step S102 of FIG. 6 (step S302: identifier data acquisition procedure).

  The position data acquisition unit 513 acquires the reception time of the radio wave from the RFID tag 300a from the reflected wave data acquired by the reflected wave data acquisition unit 511, and the RFID tag 300a acquired by the identifier data acquisition unit 512 from the position database 502. Among the position data corresponding to the identifier data, position data indicating the observation result of the position at the reception time is acquired (step S303: position data acquisition procedure).

  Similar to step S104 of FIG. 6, the image processing unit 514 generates an image of the ground surface including the point where the RFID tag 300a is installed based on the reflected wave data acquired by the reflected wave data acquisition unit 511 (step S304). : Part of image processing procedure). At or after the generation of the image of the ground surface, the image processing unit 514 corrects the image of the ground surface based on the position data acquired by the position data acquisition unit 513, similarly to step S105 of FIG. 6 (step S305: Part of image processing procedure).

  As described above, according to the present embodiment, as in the first embodiment, the position of the ground reference point can be easily specified from the reproduced image of the synthetic aperture radar 200 using the active RFID tag 300a. can do. Further, according to the present embodiment, the image analysis result of the synthetic aperture radar 200 can be easily corrected based on the position information of the active RFID tag 300a. The image processing system 100 according to the present embodiment can be used for disaster monitoring, for example. In this case, the image processing system 100 can provide highly accurate information necessary for grasping the disaster situation. For example, if the RFID tag 300a is installed on a moving body such as an emergency vehicle, the moving body can be monitored (tracked). In addition, the image processing system 100 according to the present embodiment can be used for analysis of crustal deformation, for example. In this case, the image processing system 100 specifies the position of the RFID tag 300a from the reproduced image of the synthetic aperture radar 200, and uses the positioning information from the electronic reference point 400a provided with the RFID tag 300a to analyze the crust. Since the fluctuation amount can be corrected, the reliability of the analysis result is improved.

Embodiment 4 FIG.
In the present embodiment, differences from the first embodiment will be mainly described.

  FIG. 12 is a block diagram illustrating a configuration of an RFID tag 300a which is an example of the wireless communication device in this embodiment.

  In the present embodiment, the RFID tag 300a includes a sensor interface unit 313 in addition to the components shown in FIG. The RFID tag 300a includes an environment sensor 314 that observes the surrounding environment. The environment sensor 314 observes, for example, temperature, atmospheric pressure, humidity, and weather as the surrounding environment. For example, observation points of the Japan Meteorological Agency Regional Observation System (AMeDAS: Automated, Meteorological, Data, Acquisition, System) can be used for observing the weather.

  The CPU of the signal processing unit 306 reads the observation result of the environment as environment data from the environment sensor 314 via the sensor interface unit 313. Then, the CPU transmits environment data to the electronic reference point 400a via the network interface unit 312.

  In the present embodiment, the electronic reference point 400a receives environmental data from the RFID tag 300a by the router 402. Then, the electronic reference point 400 a transmits the environmental data to the synthetic aperture radar image processing facility 500 via the electronic reference point network 102 by the router 402.

  FIG. 13 is a block diagram illustrating a configuration of the image processing apparatus 510.

  In the present embodiment, the image processing apparatus 510 includes an environment data acquisition unit 515 in addition to the components shown in FIG.

  FIG. 14 is a flowchart showing the operation of the image processing apparatus 510 (image processing method according to the present embodiment).

  In FIG. 14, the reflected wave data acquisition unit 511 acquires reflected wave data from the reflected wave database 501 in the same manner as in step S101 of FIG. 6 (step S401: reflected wave data acquisition procedure).

  The identifier data acquisition unit 512 acquires the identifier data of the RFID tag 300a from the reflected wave data acquired by the reflected wave data acquisition unit 511, similarly to step S102 of FIG. 6 (step S402: identifier data acquisition procedure).

  The position data acquisition unit 513 acquires installation data corresponding to the identifier data of the RFID tag 300a acquired by the identifier data acquisition unit 512 from the position database 502, as in step S103 of FIG. Then, the position data acquisition unit 513 acquires position data from the electronic reference point 400a indicated by the installation data via the electronic reference point network 102 (step S403: position data acquisition procedure).

  The environmental data acquisition unit 515 acquires environmental data via the electronic reference point network 102 from the electronic reference point 400a indicated by the installation data acquired by the position data acquisition unit 513 (step S404: environmental data acquisition procedure). That is, the environmental data acquisition unit 515 acquires the environmental observation result as environmental data from the environmental sensor via the RFID tag 300a, the electronic reference point 400a, and the like.

  The image processing unit 514 generates an image of the ground surface including the point where the RFID tag 300a is installed based on the reflected wave data acquired by the reflected wave data acquisition unit 511 (step S405: part of the image processing procedure). During or after generation of the image of the ground surface, the image processing unit 514 corrects the image of the ground surface based on the position data acquired by the position data acquisition unit 513 (step S406: part of the image processing procedure). Based on the environmental data acquired by the environmental data acquisition unit 515, the image of the ground surface is processed (step S407: part of the image processing procedure). For example, when the environmental sensor observes the weather, the image processing unit 514 displays a weather map around the point where the RFID tag 300a is installed on the image of the ground surface based on the environmental data acquired by the environmental data acquisition unit 515. Generate a superimposed image.

  As described above, according to the present embodiment, environment information can be mapped as additional information on the reproduced image of the synthetic aperture radar 200.

Embodiment 5 FIG.
In the present embodiment, differences from the first embodiment will be mainly described.

  In the first embodiment, when the RFID tag 300a receives a pulse wave from the synthetic aperture radar 200, the RFID tag 300a generates a radio wave according to the pulse wave, and transmits identifier data using the radio wave. On the other hand, in the present embodiment, the RFID tag 300a transmits position data instead of identifier data. That is, when the RFID tag 300a receives a pulse wave from the synthetic aperture radar 200, the RFID tag 300a generates a radio wave according to the pulse wave and transmits position data using the radio wave. For example, the RFID tag 300a stores the XYZ coordinate values and latitude / longitude of the point where the RFID tag 300a is installed in the memory in advance as position data, and receives the pulse wave from the synthetic aperture radar 200 each time the position data is received. Is read from the memory and transmitted. Alternatively, the RFID tag 300a acquires the position observation result from the electronic reference point 400a periodically or whenever it receives a pulse wave from the synthetic aperture radar 200, and transmits the latest position data. Also good.

  FIG. 15 is a flowchart showing the operation of the image processing apparatus 510 (image processing method according to the present embodiment).

  15, the reflected wave data acquisition unit 511 acquires reflected wave data from the reflected wave database 501 in the same manner as in step S101 of FIG. 6 (step S501: reflected wave data acquisition procedure).

  The position data acquisition unit 513 acquires position data transmitted by radio waves from the RFID tag 300a from the reflected wave data acquired by the reflected wave data acquisition unit 511 (step S502: position data acquisition procedure).

  The image processing unit 514 generates an image of the ground surface including the point where the RFID tag 300a is installed based on the reflected wave data acquired by the reflected wave data acquisition unit 511 (step S503: part of the image processing procedure). At or after the generation of the image of the ground surface, the image processing unit 514 corrects the image of the ground surface based on the position data acquired by the position data acquisition unit 513 (step S504: part of the image processing procedure).

  In the present embodiment, the position database 502 can be omitted from the synthetic aperture radar image processing facility 500. Further, the identifier data acquisition unit 512 can be omitted from the image processing apparatus 510.

  As a modification of the present embodiment, the RFID tag 300a includes the environmental sensor 314 as in the fourth embodiment. When a pulse wave from the synthetic aperture radar 200 is received, the environmental data is transmitted together with the position data. You may make it do. In this modification, the image processing apparatus 510 includes an environment data acquisition unit 515 as in the fourth embodiment. The environmental data acquisition unit 515 acquires environmental data transmitted by radio waves from the RFID tag 300a from the reflected wave data acquired by the reflected wave data acquisition unit 511. At or after the generation of the image of the ground surface, the image processing unit 514 processes the image of the ground surface based on the environmental data.

  As mentioned above, although embodiment of this invention was described, you may implement combining 2 or more embodiment among these. Alternatively, one of these embodiments may be partially implemented. Or you may implement combining two or more embodiment among these partially.

1 is an overall configuration diagram of an image processing system according to Embodiment 1. FIG. 4 is a signal diagram illustrating an example of signal information of radio waves from the RFID tag and reflected waves from the ground surface according to Embodiment 1. FIG. 1 is a block diagram illustrating a configuration of an RFID tag according to Embodiment 1. FIG. 3 is a diagram illustrating a configuration example of an ID setting unit of an RFID tag according to Embodiment 1. FIG. 1 is a block diagram illustrating a configuration of an image processing device according to Embodiment 1. FIG. 3 is a flowchart illustrating an operation of the image processing apparatus according to the first embodiment. 6 is a diagram illustrating a display example of the position and ID information of an RFID tag according to Embodiment 1. FIG. It is a figure which shows an example of the image of the ground surface including the point where the RFID tag which concerns on Embodiment 1 was installed. 2 is a diagram illustrating an example of a hardware configuration of an image processing apparatus according to Embodiment 1. FIG. 6 is a flowchart illustrating an operation of the image processing apparatus according to the second embodiment. 10 is a flowchart illustrating an operation of the image processing apparatus according to the third embodiment. FIG. 6 is a block diagram illustrating a configuration of an RFID tag according to Embodiment 4. FIG. 10 is a block diagram illustrating a configuration of an image processing device according to a fourth embodiment. 14 is a flowchart illustrating an operation of the image processing apparatus according to the fourth embodiment. 10 is a flowchart illustrating an operation of the image processing apparatus according to the fifth embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 100 Image processing system, 101 GPS satellite group, 102 Electronic reference point network, 200 Synthetic aperture radar, 201 Synthetic aperture radar antenna, 300a, b, c RFID tag, 301 Transmission / reception antenna, 302 RF filter unit, 303 Transmission / reception switching unit, 304 Reception unit, 305 timer unit, 306 signal processing unit, 307 power supply control unit, 308 transmission unit, 309 amplification unit, 310 power supply unit, 311 ID setting unit, 312 network interface unit, 313 sensor interface unit, 314 environmental sensor, 400a, b, c Electronic reference point, 401 GPS receiver, 402 router, 500 Synthetic aperture radar image processing equipment, 501 reflected wave database, 502 position database, 510 image processing device, 511 reflected wave data acquisition unit, 512 identifier data Data acquisition unit, 513 position data acquisition unit, 514 image processing unit, 515 environment data acquisition unit, 521 storage device, 522 processing device, 523 input device, 524 output device, 901 display device, 902 keyboard, 903 mouse, 904 FDD, 905 CDD, 906 Printer device, 911 CPU, 912 bus, 913 ROM, 914 RAM, 915 communication board, 920 magnetic disk device, 921 operating system, 922 window system, 923 program group, 924 file group.

Claims (13)

A radio wave generated from a radio wave in response to a pulse wave from above and transmitting identifier data by the radio wave; a reflected wave of the pulse wave from a ground surface including a point where the radio communication apparatus is installed; A reflected wave data acquisition unit that acquires the reflected wave data from the reflected wave database that stores the reflected wave data,
From the reflected wave data acquired by the reflected wave data acquisition unit, an identifier data acquisition unit that acquires identifier data transmitted by radio waves from the wireless communication device;
Position data corresponding to the identification data acquired by the identifier data acquisition unit from a position database that stores the identifier data of the wireless communication apparatus and position data indicating the position of the point where the wireless communication apparatus is installed in association with each other. A position data acquisition unit to acquire;
Based on the reflected wave data acquired by the reflected wave data acquisition unit, an image of the ground surface including the point where the wireless communication device is installed is generated, and based on the position data acquired by the position data acquisition unit, the ground surface An image processing apparatus comprising: an image processing unit that corrects the image of the image. The wireless communication device is attached to each of a plurality of electronic reference points for observing a position based on a positioning signal from a positioning satellite,
In place of the position data, the position database stores installation data indicating an electronic reference point to which the wireless communication device is attached,
The position data acquisition unit acquires installation data corresponding to the identification data acquired by the identifier data acquisition unit from the position database, and uses an observation result of the position from the electronic reference point indicated by the installation data as position data. The image processing apparatus according to claim 1, wherein the image processing apparatus acquires the image processing apparatus. The wireless communication device is attached to each of a plurality of electronic reference points for observing a position based on a positioning signal from a positioning satellite,
The reflected wave database stores the reception time of radio waves from the wireless communication device as a part of reflected wave data,
The position database stores, as position data, a history of position observation results from an electronic reference point provided with the wireless communication device,
The position data acquisition unit acquires the reception time of radio waves from the wireless communication device from the reflected wave data acquired by the reflected wave data acquisition unit, and the identification data acquired by the identifier data acquisition unit from the position database 2. The image processing apparatus according to claim 1, wherein position data indicating an observation result of a position at the reception time is acquired from position data corresponding to. The wireless communication device includes an environmental sensor for observing the surrounding environment,
The image processing apparatus further includes:
An environmental data acquisition unit for acquiring environmental observation results as environmental data from the environmental sensor;
4. The image processing unit according to claim 1, wherein the image processing unit processes an image of a ground surface including a point where the wireless communication device is installed based on the environmental data acquired by the environmental data acquisition unit. An image processing apparatus according to claim 1. The environmental sensor observes the weather as the surrounding environment,
The image processing unit generates an image in which a weather map is superimposed on an image of a ground surface including a point where the wireless communication device is installed, based on environment data acquired by the environment data acquisition unit. Item 5. The image processing apparatus according to Item 4. A wireless communication device that receives a pulse wave from above, generates a radio wave according to the pulse wave, and transmits identifier data by the radio wave;
A synthetic aperture radar mounted on a flying object, which transmits a pulse wave during the flight of the flying object, and the pulse from the ground surface including the radio wave from the wireless communication device and the point where the wireless communication device is installed A synthetic aperture radar that receives the reflected wave of the wave;
A reflected wave database for storing radio waves and reflected waves received by the synthetic aperture radar as reflected wave data;
A location database that stores the identifier data of the wireless communication device and location data indicating the location of the location where the wireless communication device is installed;
Reflected wave data acquisition unit for acquiring reflected wave data from the reflected wave database, and identifier data acquisition for acquiring identifier data transmitted by radio waves from the wireless communication device, from reflected wave data acquired by the reflected wave data acquisition unit Corresponding to the identification data acquired by the identifier data acquisition unit from the location database that stores the identifier data of the wireless communication device and the location data indicating the location of the point where the wireless communication device is installed in association with each other Based on the reflected wave data acquired by the reflected wave data acquiring unit, the position data acquiring unit that acquires position data generates an image of the ground surface including the point where the wireless communication device is installed, and the position data acquiring unit And an image processing device that includes an image processing unit that corrects an image of the ground surface based on the position data acquired by the Image processing system to be. A wireless communication device that receives a pulse wave from above, generates a radio wave according to the pulse wave, and transmits position data by the radio wave;
A synthetic aperture radar mounted on a flying object, which transmits a pulse wave during the flight of the flying object, and the pulse from the ground surface including the radio wave from the wireless communication device and the point where the wireless communication device is installed A synthetic aperture radar that receives the reflected wave of the wave;
A reflected wave database for storing radio waves and reflected waves received by the synthetic aperture radar as reflected wave data;
A reflected wave data acquisition unit that acquires reflected wave data from the reflected wave database, and position data acquisition that acquires position data transmitted by radio waves from the wireless communication device, from the reflected wave data acquired by the reflected wave data acquisition unit And an image of the ground surface including the point where the wireless communication device is installed based on the reflected wave data acquired by the reflected wave data acquisition unit, and based on the position data acquired by the position data acquisition unit An image processing system comprising: an image processing device including an image processing unit that corrects an image of the ground surface. The reflected wave data acquisition unit of the image processing device generates a radio wave in response to a pulse wave from the sky, and transmits the identifier data by the radio wave, and the location where the wireless communication device is installed. A first step of obtaining the reflected wave data from a reflected wave database that stores the reflected wave of the pulse wave from the ground surface including the reflected wave data;
A second step in which an identifier data acquisition unit of the image processing device acquires identifier data transmitted by radio waves from the wireless communication device, from the reflected wave data acquired in the first step;
From the position database in which the position data acquisition unit of the image processing apparatus stores the identifier data of the wireless communication apparatus and the position data indicating the position of the point where the wireless communication apparatus is installed in association with each other in the second step. A third step of acquiring position data corresponding to the acquired identification data;
The image processing unit of the image processing device generates an image of the ground surface including the point where the wireless communication device is installed based on the reflected wave data acquired in the first step, and is acquired in the third step. And a fourth step of correcting the image of the ground surface based on the position data. A radio wave generated from a radio wave in response to a pulse wave from above and transmitting identifier data by the radio wave; a reflected wave of the pulse wave from a ground surface including a point where the radio communication apparatus is installed; A reflected wave data acquisition procedure for acquiring the reflected wave data from the reflected wave database stored as reflected wave data;
From the reflected wave data acquired by the reflected wave data acquisition procedure, an identifier data acquisition procedure for acquiring identifier data transmitted by radio waves from the wireless communication device;
Position data corresponding to the identification data acquired by the identifier data acquisition procedure from a position database that stores the identifier data of the wireless communication apparatus and position data indicating the position of the point where the wireless communication apparatus is installed in association with each other. A position data acquisition procedure to be acquired;
Based on the reflected wave data acquired by the reflected wave data acquisition procedure, an image of the ground surface including the point where the wireless communication device is installed is generated, and based on the position data acquired by the position data acquisition procedure, An image processing program for causing a computer to execute an image processing procedure for correcting the image. The wireless communication device is attached to each of a plurality of electronic reference points for observing a position based on a positioning signal from a positioning satellite,
In place of the position data, the position database stores installation data indicating an electronic reference point to which the wireless communication device is attached,
The position data acquisition procedure acquires installation data corresponding to the identification data acquired by the identifier data acquisition procedure from the position database, and uses an observation result of the position from the electronic reference point indicated by the installation data as position data. The image processing program according to claim 9, wherein the image processing program is acquired. The wireless communication device is attached to each of a plurality of electronic reference points for observing a position based on a positioning signal from a positioning satellite,
The reflected wave database stores the reception time of radio waves from the wireless communication device as a part of reflected wave data,
The position database stores, as position data, a history of position observation results from an electronic reference point provided with the wireless communication device,
The position data acquisition procedure acquires the reception time of radio waves from the wireless communication device from the reflected wave data acquired by the reflected wave data acquisition procedure, and the identification data acquired by the identifier data acquisition procedure from the position database. The image processing program according to claim 9, wherein position data indicating an observation result of a position at the reception time is acquired from the position data corresponding to. The wireless communication device includes an environmental sensor for observing the surrounding environment,
The image processing program further includes:
Causing the computer to execute an environmental data acquisition procedure for acquiring environmental observation results as environmental data from the environmental sensor;
12. The image processing procedure according to any one of claims 9 to 11, wherein the image processing procedure processes an image of a ground surface including a point where the wireless communication device is installed based on environment data acquired by the environment data acquisition procedure. An image processing program according to any one of the above. The environmental sensor observes the weather as the surrounding environment,
The image processing procedure generates an image in which a weather map is superimposed on an image of a ground surface including a point where the wireless communication device is installed, based on environment data acquired by the environment data acquisition procedure. Item 13. The image processing program according to any one of Items 12 to 12.

Images