JP2013082549A - Position specifying device, position specifying method, position specifying program, and position specifying system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To specify a position with light processing load for a short time even if a target position is changed by being moved, or a marker placing position is displaced.SOLUTION: A position specifying device includes: an image data acquisition part 21 which is provided in construction materials and acquires image data obtained by photographing a marker where a predetermined code is visibly recorded; a marker image detection part 22 which detects an image of the marker from image data; a code detection part 23 which detects the predetermined code from the image of the marker; and a target position information acquisition part 25 which acquires target position information corresponding to the construction materials based on the predetermined code from a position information management device for managing the target position information indicative of the target position corresponding to the construction materials.

Description

  The present invention relates to a position specifying device, a position specifying method, a position specifying program, and a position specifying system.

  Controls the positional relationship between the imaging device and the object by recognizing the target provided on the object by executing analysis processing of the image of the object obtained by the imaging device and tracking the target on the image Visual feedback technology is known. This visual feedback technique is applied to control for moving a crane hook to a position where the material can be slung. For example, crane control that guides a hook of a crane to a stakeable position by applying a visual feedback technique with a specific marker graphic provided on a construction material as a target is known.

  Further, a bar code or QR code (registered trademark) in which the position information of the object is recorded is targeted, and the position adjustment unit reads the position information from the code recorded in the bar code or QR code (registered trademark). A technique for adjusting the position based on information is known (see, for example, Patent Document 1).

JP 2011-36107 A

  In the visual feedback technique described above, it is necessary to acquire captured images of an object in time series, perform image processing on each captured image, and feed back the target position. Therefore, the visual feedback technique has a problem that the processing load of the image processing unit is heavy, so that the cost is high and the alignment takes time. Further, since the accuracy of the target installation position is important, if there is a deviation in the installation position, a guidance error will occur, and it will take time for alignment.

  Further, in the technique disclosed in Patent Document 1, the position information recorded in the barcode or QR code (registered trademark) is above, below, left, right, upper right, lower right, upper left, lower left with respect to a predetermined reference position. It is premised that the mutual positional relationship between two objects to be aligned is generally known. Therefore, for example, in an environment where the location of the construction material is changed, such as a construction site or a large-scale warehouse, the position information fixedly recorded on the barcode or QR code (registered trademark) cannot be used. By applying the technique disclosed in Patent Document 1, it is not possible to align the hook of the crane with the construction material.

  Therefore, the present invention has been made to solve the above-described problems, and even if the target position (target position) is changed by movement or the target installation position is deviated, light processing is performed. An object of the present invention is to provide a position specifying device, a position specifying method, a position specifying program, and a position specifying system that can specify the position with a load in a short time.

[1] In order to solve the above-described problem, a position specifying device according to one aspect of the present invention uses image data obtained by photographing a marker provided on an article, in which a predetermined code is recorded so as to be visible. From the image data acquisition unit to be acquired, the marker image detection unit for detecting the image of the marker from the image data acquired by the image data acquisition unit, and the image of the marker detected by the marker image detection unit The code corresponding to the article based on the predetermined code detected by the code detector from a code detecting section that detects a code and a position information management device that manages target position information indicating a target position corresponding to the article A target position information acquisition unit that acquires target position information.
[2] In the position specifying device according to [1], the predetermined code includes identification information of the marker and location information indicating at least a location of the location information management device, and the target location information acquisition unit includes: The location information management device is accessed based on the location information, the identification information is supplied to the location information management device, and the target location information acquired by the location information management device based on the identification information is the location information. It is acquired from an information management device.
[3] In order to solve the above-described problem, the position specifying method according to one aspect of the present invention is based on image data obtained by photographing a marker provided on an article, in which a predetermined code is recorded so as to be visible. An image data acquisition step acquired by the image data acquisition unit, a marker image detection step in which a marker image detection unit detects an image of the marker from the image data acquired in the image data acquisition step, and the marker image detection From the code detection step in which the code detection unit detects the predetermined code from the image of the marker detected in step, and the position information management device that manages the target position information indicating the target position corresponding to the article, the code Based on the predetermined code detected in the detection step, the target position information acquisition unit corresponds to the target position corresponding to the article. And having a target position information acquisition step of acquiring broadcast, the.
[4] In the position specifying method according to [3], the predetermined code includes identification information of the marker and location information indicating at least a location of the location information management device, and the target location information acquisition step includes: The target position information acquisition unit accesses the position information management apparatus based on the location information, supplies the identification information to the position information management apparatus, and is acquired by the position information management apparatus based on the identification information. The target position information is acquired from the position information management device.
[5] In order to solve the above-described problem, the position specifying program according to one aspect of the present invention is obtained by photographing a marker provided on an article and recorded with a predetermined code so as to be visible. From the image data acquisition unit for acquiring image data, the marker image detection unit for detecting the image of the marker from the image data acquired by the image data acquisition unit, and the image of the marker detected by the marker image detection unit, Based on the predetermined code detected by the code detection unit, the code detection unit that detects the predetermined code and a position information management device that manages target position information indicating a target position corresponding to the item are used to store the article. It functions as a target position information acquisition unit that acquires the corresponding target position information.
[6] In the position specifying program according to [5], the predetermined code includes identification information of the marker and location information indicating at least a location of the location information management device, and the target location information acquisition unit includes: The location information management device is accessed based on the location information, the identification information is supplied to the location information management device, and the target location information acquired by the location information management device based on the identification information is the location information. It is acquired from an information management device.
[7] In order to solve the above-described problem, the position specifying system according to one aspect of the present invention is an image capturing that generates image data by capturing a marker provided on an article and recorded so that a predetermined code is visible. An image data acquisition unit that captures the image data generated by the imaging unit, a marker image detection unit that detects an image of the marker from the image data acquired by the image data acquisition unit, and the marker image detection unit From the image of the marker detected by the code, a code detection unit that detects the predetermined code, a position information management unit that manages target position information indicating a target position corresponding to the article, and the position information management unit, A target position information acquisition unit that acquires the target position information corresponding to the article based on the predetermined code detected by the code detection unit.

  According to the present invention, even if the target position is changed by movement or the target installation position is deviated, the position can be specified in a short time with a light processing load.

It is a block diagram which shows the general whole structure at the time of applying the position specifying system which is one Embodiment of this invention to the crane control system used in a construction site, a material storage, etc. FIG. It is a block diagram which shows the function structure of the position specification apparatus in the embodiment. It is a figure which shows the data structure of the positional infomation table memorize | stored in the memory | storage part of a positional infomation management apparatus. It is the figure which showed typically the construction material and the target position with respect to this construction material. It is a flowchart which shows the procedure of a process of a position specific apparatus and a positional information management apparatus. It is a figure which shows typically the crane control system in which two machine apparatuses transfer a construction material in a construction site.

Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings.
FIG. 1 is a block diagram showing a schematic overall configuration when a position specifying system according to an embodiment of the present invention is applied to a crane control system used in a construction site, a material storage, or the like. This crane control system is a system for accurately identifying the position of a construction material whose placement location is not fixed, and moving the crane hook within a construction material slinging position or a slingable range. It should be noted that the storage location is not fixed as described above, that is, the storage location of the construction material can be changed, such as a construction site or a material storage location.

  As shown in FIG. 1, the crane control system 1 includes an imaging device (imaging unit) 10, a location specifying device 20, a network 30, a location information management device (location information management unit) 40, and an attitude control device 50. And the mechanical device 60. The position specifying device 20, the position information management device 40, and the attitude control device 50 are connected via the network 30.

  The position specifying system includes an imaging device 10, a position specifying device 20, a network 30, and a position information management device 40.

  In the construction site, the construction material M, which is an article provided with the marker C, is movably placed on the ground or a pallet. The marker C is a mark (mark, marking) in which a predetermined code is recorded so as to be visible. The marker C is, for example, a barcode or a two-dimensional code. As the two-dimensional code, for example, a QR code (registered trademark) is applicable. The predetermined code includes the identification information of the marker C (marker identification information) and the location information of the position information table registered in the position information management device 40. The position information table is a data table that stores target position information for each marker C. Details of the position information table will be described later. The location information is information for specifying the location information table on the network, and is, for example, a URL (Uniform Resource Locator) indicating the location information table stored in the location information management device 40. The location information indicates at least the location of the location information management device 40 on the network. The marker C is provided for each moving unit of the construction material M at a position where it can be visually recognized from the outside by pasting, printing, or the like. When a single construction material M is a moving unit, a marker C is provided for each construction material M. For example, when four sets of construction materials M placed on a pallet are moving units, a marker C is provided on one construction material M that can be seen from the outside.

  The construction material M is a construction member, for example, a precast concrete (PC) board.

  The imaging device 10 is a device that supplies image data obtained by imaging the marker C to the position specifying device 20. The photographing device 10 may be a digital camera device that obtains still image data or a digital video camera device that obtains moving image data. Further, the photographing apparatus 10 may have a monochrome photographing function or a color photographing function. Moreover, the imaging device 10 may be realized by a camera device that can be connected to a network. Camera devices that can be connected to a network include, for example, mobile terminals with photographing functions such as web camera devices and smartphones. The imaging device 10 is fixed or movable at a position where the marker C provided on the construction material M can be imaged. Alternatively, the imaging device 10 is held by a user.

The position specifying device 20 takes in the image data supplied from the imaging device 10 and detects the image of the marker C from this image data. The position specifying device 20 detects the image of the marker C from the image data by applying, for example, a known template matching method or an object detection technique based on image feature amount extraction.
The position specifying device 20 reads the predetermined code described above from the detected image of the marker C, and acquires target position information corresponding to the marker C from the position information management device 40 based on this code.
The position specifying device 20 generates a posture control command in which the target position indicated by the acquired target position information is designated as the movement target position of the working unit of the mechanical device 60 (for example, a crane hook). This is supplied to the attitude control device 50.

  The network 30 is a telecommunication line that forms a computer network, and is connected to, for example, a LAN (Local Area Network) or the Internet provided at a construction site or a construction company.

  The location information management device 40 is a server device that includes a storage unit that stores a location information table. The storage unit is realized by a magnetic hard disk device, a semiconductor storage device, or the like. The position information management device 40 fetches an acquisition request for target position information corresponding to the marker C supplied from the position specifying device 20. Based on the acquisition request, the position information management device 40 extracts target position information from the position information table stored in the storage unit, and supplies the target position information to the position specifying device 20 that is the request source.

The posture control device 50 takes in the posture control command supplied from the position specifying device 20, and controls the operation of the mechanical device 60 so that the working unit such as a hook is moved to the destination target position indicated by the posture control command.
The mechanical device 60 is, for example, a crane that lifts a construction material M or a combination of construction materials M, which is a moving unit. The mechanical device 60 moves a working unit such as a hook under the control of the attitude control device 50.

FIG. 2 is a block diagram showing a functional configuration of the position specifying device 20.
As shown in the figure, the position specifying device 20 includes an image data acquisition unit 21, a marker image detection unit 22, a code detection unit 23, a target position information request unit 24, a target position information acquisition unit 25, and an attitude. And a control unit 26.

  The image data acquisition unit 21 captures image data supplied from the imaging device 10. When the image data is still image data, the image data acquisition unit 21 supplies the captured image data to the marker image detection unit 22 as frame image data. When the image data is moving image data, the image data acquisition unit 21 detects a key frame from the captured moving image data, and uses the data of the key frame as frame image data in order or a predetermined frame determined in advance. It supplies to the marker image detection part 22 every several numbers.

  The marker image detection unit 22 takes in the frame image data supplied from the image data acquisition unit 21, detects the image of the marker C from the frame image data, and supplies the image of the marker C to the code detection unit 23. For example, the marker image detection unit 22 holds in advance, as reference image data (template image data), the external shape of the marker C or a characteristic graphic provided in common to all the markers C. The marker image detection unit 22 detects the image of the marker C from the frame image data by searching for whether there is an image that matches the reference image data in the frame image data.

  The code detection unit 23 captures an image of the marker C supplied from the marker image detection unit 22. The code detection unit 23 detects a predetermined code from the image of the marker C, and supplies the predetermined code to the target position information request unit 24. Specifically, the code detection unit 23 reads marker identification information for identifying the marker C and location information of the position information table registered in the position information management device 40 from the image of the marker C, and these information Is supplied to the target position information request unit 24.

The target position information request unit 24 takes in a predetermined code supplied from the code detection unit 23 and supplies an acquisition request for target position information corresponding to the marker C to the position information management device 40 based on the predetermined code. . Specifically, the target position information request unit 24 accesses the position information management device 40 based on the location information in a predetermined code, and supplies the mark identification information to the position information management device 40.
The target position information acquisition unit 25 acquires target position information corresponding to the acquisition request supplied from the position information management device 40 that has acquired the acquisition request for target position information corresponding to the marker C. That is, the target position information acquisition unit 25 acquires the target position information acquired by the position information management apparatus 40 from the position information management apparatus 40 based on the mark identification information. Then, the target position information acquisition unit 25 supplies the acquired target position information to the posture control unit 26.

  The attitude control unit 26 takes in the target position information supplied from the target position information acquisition unit 25. Then, the posture control unit 26 generates a posture control command that designates the target position indicated by the target position information as the movement destination target position of the working unit of the mechanical device 60, and supplies this posture control command to the posture control device 50. To do.

  FIG. 3 is a diagram illustrating a data configuration of the position information table stored in the storage unit of the position information management device 40. As shown in the figure, the position information table is a data table in which items of marker identification information, material information, date information, and target position information are associated with each other. The position information management device 40 extracts a record from the position information table using the marker identification information as a main key.

The item “marker identification information” is an item for storing information by characters, numbers, symbols, or a combination thereof for identifying the marker C.
The item “material information” is an item for storing information for specifying one or a plurality of construction materials M provided with the marker C corresponding to the marker identification information. The material information is information such as the model number and serial number of the construction material M, for example.
The item “date and time information” is an item for storing information indicating the date and time when the target position information is stored or updated (overwritten) in the item “target position information”. The date / time information is information indicating, for example, year, month, day, hour, minute, and second.

The item “target position information” is position information indicating a position that is a target of alignment for one or a plurality of construction materials M provided with the marker C corresponding to the marker identification information. As shown in FIG. 3, the target position information is latitude and longitude indicating the target position and altitude.
The target position information may be a coordinate value specified by an orthogonal coordinate system. The orthogonal coordinate system is, for example, an earth-centered inertial ECI (Earth-Centered Internal) coordinate system or an earth-centered Earth-fixed ECEF (Earth-Centered Earth-Fixed) coordinate system.

4A and 4B are diagrams schematically showing the construction material and the target position for the construction material. FIG (a) shows an example in which the target position P _a rigging position to hooking provided on the construction materials M _a. The position information table in which location information management device 40 held by the marker identification information of the marker C _a provided construction materials M _a, a material information specifying the construction materials M _a, a target position indicating the target position P _a Information and date and time information indicating the date and time when the target position information is stored or overwritten in the position information table are stored. Not the accuracy of the installation position of the marker C _a which is asked for construction materials M _a.
Further, FIG. (B) is an example in which the sling possible positions on the wire to be subjected to a set of construction materials consisting of construction materials _{M b1,} M _b2, M _b3 and the target position P _b. The position information table location manager 40's, identification and marker identification information of the marker _{C b} provided on construction materials _{M b1,} a set of construction materials consisting of construction materials _{M b1, M b2, M b3} and materials information, and the target position information indicating a target position P _b, and the date and time information indicating the date and time when this was the target position information stored or overwritten in the position information table is stored. Not the accuracy of the installation position of the marker C _b also put for construction materials M _b1.

  Next, registration and update of data in the position information table stored in the position information management device 40 will be described. Although not shown in FIG. 1, a terminal (for example, a computer device) that executes the data registration and update is connected to the network 30.

As a first example, when the construction material M is carried into the construction site, the terminal manages a search request specifying the marker identification information corresponding to the marker C provided on the construction material M by the operation of the operator. Supply to device 40.
When the position information management device 40 receives a search request supplied from the terminal, the position information management apparatus 40 searches the position information table stored in the storage unit using the marker identification information specified in the search request as a key. When a record that hits the key is detected, the location information management device 40 extracts the record and supplies this record to the terminal as a search response. On the other hand, when the record that hits the key is not detected, the position information management device 40 supplies information indicating that there is no record corresponding to the marker identification information to the terminal as a search response.

Alternatively, as a second example, when the construction material M is carried into the construction site, the terminal controls the position specifying device 20 and acquires a predetermined code from the position specifying device 20. Specifically, the terminal controls the position specifying device 20 to cause the photographing device 10 to photograph the marker C, and causes the position identifying device 20 to capture image data. Then, the terminal takes in the predetermined code read by the position specifying device 20 from the image data, that is, the marker identification information, and the location information in the position information table registered in the position information management device 40 from the position specifying device 20. Then, the terminal accesses the location information management device 40 using the acquired predetermined code.
When receiving the access from the terminal, the position information management device 40 searches the position information table stored in the storage unit using the marker identification information as a key. When a record that hits the key is detected, the location information management device 40 extracts the record and supplies this record to the terminal as a search response. On the other hand, when the record that hits the key is not detected, the position information management device 40 supplies information indicating that there is no record corresponding to the marker identification information to the terminal as a search response.

The terminal captures the search response supplied from the location information management device 40. If the search response is a record corresponding to the marker identification information, the material information for specifying the material information M is stored in this record. On the other hand, when the search response is information indicating that there is no record, a record is generated, and marker identification information corresponding to the marker C and material information specifying the material information M are stored in this record.
And a terminal records or updates the target position information which shows the target position measured after the construction material M was put in the storage place etc., and the date information which shows the present date. The measurement of the target position will be described later.
The terminal supplies a record in which data is stored or updated to the location information management device 40. Then, the location information management device 40 takes in the record supplied from the terminal, and adds this record to the location information table or updates it with the record.

The target position corresponding to the construction material M is measured every time the construction material M is moved. A method for measuring the target position will be described.
The target position with respect to the construction material M is obtained by position measurement by a position detection device such as a GPS (Global Positioning System) receiver. That is, a position detection device is provided at a target position corresponding to the construction material M, and a position obtained by measurement by this position detection device is set as a target position.

Next, the operation of the crane control system in one embodiment of the present invention will be described.
FIG. 5 is a flowchart showing a processing procedure of the position specifying device 20 and the position information management device 40.
First, the operation of the position specifying device 20 will be described.
In step S1, the image data acquisition unit 21 receives image data supplied from the photographing apparatus 10 (S1: NO). Then, when the image data acquisition unit 21 receives supply of image data from the photographing apparatus 10 (S1: YES), the image data acquisition unit 21 proceeds to the process of step S2.

  In step S2, the image data acquisition unit 21 captures image data. When the image data is still image data, the image data acquisition unit 21 supplies the captured image data to the marker image detection unit 22 as frame image data. When the image data is moving image data, the image data acquisition unit 21 detects a key frame from the captured moving image data, and uses the data of the key frame as frame image data in order or a predetermined frame determined in advance. It supplies to the marker image detection part 22 every several numbers.

Next, in step S3, the marker image detection unit 22 detects an image of the marker C from the captured frame image data. For example, the marker image detection unit 22 holds, as reference image data, in advance, for example, the external shape of the marker C and a characteristic graphic provided in common to all the markers C. The marker image detection unit 22 detects the image of the marker C from the frame image data by searching whether or not there is an image that matches the reference image data in the captured frame image data.
In step S4, when the marker image detection unit 22 detects the image of the marker C from the frame image data (S4: YES), the marker image detection unit 22 proceeds to the process of step S5, and does not detect the image of the marker C from the frame image data (S4). : NO) returns to the process of step S1.

In step S5, the code detection unit 23 detects the predetermined code described above from the detected image of the marker C. Specifically, the code detection unit 23 reads marker identification information for identifying the marker C and location information in the position information table registered in the position information management device 40 from the image of the marker C.
Next, in step S6, the target position information request unit 24 supplies an acquisition request for target position information corresponding to the marker C to the position information management device 40 based on the predetermined code read in the process of step S5. Specifically, the target position information request unit 24 accesses the position information management device 40 based on the location information in a predetermined code, and supplies the mark identification information to the position information management device 40.

Next, in step S <b> 7, the target position information acquisition unit 25 supplies the target position information corresponding to the acquisition request supplied from the position information management device 40 that has received the acquisition request for the target position information corresponding to the marker C. take in. That is, the target position information acquisition unit 25 acquires the target position information acquired by the position information management apparatus 40 from the position information management apparatus 40 based on the mark identification information.
Next, in step S8, the posture control unit 26 generates a posture control command that designates the target position indicated by the acquired target position information as the destination target position of the working unit of the mechanical device 60. This is supplied to the attitude control device 50.

Next, the operation of the location information management device 40 will be described.
In step S11, the position information management device 40 captures the acquisition request supplied from the target position information request unit 24 in the process of step S6.
Next, in step S12, the position information management device 40 extracts target position information from the position information table stored in the storage unit based on the acquisition request.
Next, in step S13, the position information management device 40 supplies the extracted target position information to the target position information acquisition unit 25 of the position specifying device 20 that is the request source.

  As described above, in the present embodiment, the marker C provided on the construction material M is a code including the marker identification information and the location information (for example, URL) of the location information table registered in the location information management device 40. Is to be recorded. The imaging device 10 supplies image data obtained by imaging the marker C to the position specifying device 20. Then, the position specifying device 20 takes in the image data supplied from the imaging device 10, analyzes the image data, detects the image of the marker C, and reads the recorded code from the image of the marker C. Thereby, the position specifying device 20 specifies the marker C and grasps the location of the position information table.

  In the present embodiment, the target position information corresponding to the movement unit of the construction material M, that is, the construction material M or the combination of the construction materials M, is managed by the position information table stored in the position information management device 40. That is, when the construction material M or the combination of the construction materials M is moved, a position detection device such as a GPS receiver measures the target position at the destination. Then, the terminal takes in the target position information obtained by the measurement, and supplies this target position information to the position information management device 40. Then, the position information management device 40 takes in the supplied target position information and updates the corresponding item in the position information table with this target position information. Thereby, the position information management device 40 accurately manages the target position for the unit of movement of the construction material M.

  In the present embodiment, the position specifying device 20 accesses the position information management device 40 based on the marker identification information of the specified marker C and information indicating the location of the position information table. Then, the position information management device 40 extracts target position information corresponding to the marker identification information and supplies the target position information to the position specifying device 20 that is a request source. As a result, the position specifying device 20 detects the image of the marker C from the image data captured from the photographing device 10, reads the code recorded in the marker C, and accesses the position information management device 40. Target position information corresponding to the construction material M provided with the marker C or a combination of construction materials M can be acquired from the management device 40.

According to the present embodiment, since the fixed target position information is not recorded in the marker C, the marker C does not need to have positional accuracy with respect to the construction material M. Moreover, there is no restriction | limiting in the magnitude | size with respect to the construction material M of the marker C, For example, you may determine the magnitude | size of the marker C according to the distance of the construction material M and the imaging device 10. That is, the size of the marker C may be increased as the distance between the construction material M and the imaging device 10 increases.
Therefore, according to this embodiment, even if the position of the movement unit of the construction material M is changed by movement or the installation position of the marker C is shifted, the target position can be set in a short time with a light processing load. Can be identified.

In the present embodiment, in a construction site where a plurality of mechanical devices 60 are installed, the plurality of mechanical devices 60 transfer the construction material M by sequentially moving the construction material M provided with the markers C. It is applicable to.
FIG. 6 is a diagram schematically showing a crane control system in which two mechanical devices 60 transfer the construction material M at the construction site.
As shown in the figure, a mechanical device 60-1 and a mechanical device 60-2 are installed at the construction site. In this crane control system, the mechanical device 60-1 moves the construction material M placed at the location A1 to the location A2. The mechanical device 60-2 moves the construction material M placed at the location A2 to the location A3.

When the construction material M is placed at the location A1, the crane control system performs the registration and update processing of the data in the position information table stored in the position information management device 40, and the target position information and the current date and time. Is registered or updated in the position information table.
When the mechanical device 60-1 moves the construction material M placed at the location A1 to the location A2, for example, based on crane information such as the turning angle, jib angle, and wire hook length of the mechanical device 60-1. The crane control system can calculate the target position of the construction material M at the location A2. Alternatively, the crane control system can obtain the target position of the construction material M by position measurement using a position detection device such as a GPS receiver provided in the construction material M. Therefore, the crane control system obtains the newly obtained target position information and date / time information indicating the current date / time, in the same manner as the registration and update processing of data in the position information table stored in the position information management device 40 described above. Register or update in the location information table.

  In the case where the mechanical device 60-2 moves the construction material M placed at the location A2 to the location A3, the location information is inherited from the target location information and the date / time information as in the case of the mechanical device 60-1. You can update to the table.

In this way, the mechanical devices 60-1 and 60-2 can transfer the construction material M from the location A1 to the location A3 by sequentially relaying the construction material M provided with the marker C.
Such a crane control system having a plurality of mechanical devices 60 is, for example, a place where an operator cannot operate or a place where it is difficult to ensure safety from a place where an operator can operate or a place where safety can be ensured. This is useful when transferring an article up to.

  In addition, you may make it implement | achieve a part of function of the position specification apparatus 20 which is embodiment mentioned above with a computer. In this case, a position specifying program for realizing the function is recorded on a computer-readable recording medium, the position specifying program recorded on the recording medium is read into the computer system, and the computer system executes the position specifying program. It may be realized. This computer system includes an operating system (OS) and hardware of peripheral devices. The computer-readable recording medium is a portable recording medium such as a flexible disk, a magneto-optical disk, an optical disk, or a memory card, and a storage device such as a magnetic hard disk or a solid state drive provided in the computer system. Furthermore, a computer-readable recording medium dynamically holds a program for a short time, such as a computer network such as the Internet, and a communication line when transmitting a program via a telephone line or a cellular phone network. In addition, a server that holds a program for a certain period of time, such as a volatile memory inside a computer system serving as a server device or a client in that case, may be included. Further, the above-described position specifying program may be for realizing a part of the above-described functions, and further, realizing the above-described functions by a combination with a program already recorded in the computer system. May be.

  As mentioned above, although embodiment of this invention was explained in full detail with reference to drawings, the specific structure is not restricted to that embodiment, The design of the range which does not deviate from the summary of this invention, etc. are included.

DESCRIPTION OF SYMBOLS 1 Crane control system 10 Image pick-up device 20 Position specification apparatus 21 Image data acquisition part 22 Marker image detection part 23 Code detection part 24 Target position information request | requirement part 25 Target position information acquisition part 26 Posture control part 30 Network 40 Position information management apparatus 50 Posture Control device 60 Mechanical device

Claims (7)

An image data acquisition unit configured to acquire image data obtained by photographing a marker provided on the article, in which a predetermined code is recorded so as to be visible;
A marker image detection unit that detects an image of the marker from the image data acquired by the image data acquisition unit;
A code detection unit for detecting the predetermined code from the image of the marker detected by the marker image detection unit;
Target position information for acquiring the target position information corresponding to the article based on the predetermined code detected by the code detection unit from a position information management device that manages target position information indicating the target position corresponding to the article. An acquisition unit;
A position specifying device comprising: The predetermined code includes identification information of the marker and location information indicating at least a location of the location information management device,
The target position information acquisition unit accesses the position information management apparatus based on the location information, supplies the identification information to the position information management apparatus, and is acquired by the position information management apparatus based on the identification information. The position specifying apparatus according to claim 1, wherein the target position information is acquired from the position information management apparatus. An image data acquisition step in which the image data acquisition unit acquires image data obtained by photographing a marker provided on the article, in which a predetermined code is recorded so as to be visible;
A marker image detection step in which a marker image detection unit detects an image of the marker from the image data acquired in the image data acquisition step;
A code detection step in which a code detection unit detects the predetermined code from the image of the marker detected in the marker image detection step;
Based on the predetermined code detected in the code detection step from a position information management apparatus that manages target position information indicating a target position corresponding to the article, a target position information acquisition unit that corresponds to the article A target position information acquisition step for acquiring position information;
A position specifying method characterized by comprising: The predetermined code includes identification information of the marker and location information indicating at least a location of the location information management device,
In the target position information acquisition step, the target position information acquisition unit accesses the position information management device based on the location information, supplies the identification information to the position information management device, and based on the identification information The position specifying method according to claim 3, wherein the target position information acquired by the position information management apparatus is acquired from the position information management apparatus. Computer
An image data acquisition unit configured to acquire image data obtained by photographing a marker provided on the article, in which a predetermined code is recorded so as to be visible;
A marker image detection unit that detects an image of the marker from the image data acquired by the image data acquisition unit;
A code detection unit for detecting the predetermined code from the image of the marker detected by the marker image detection unit;
Target position information for acquiring the target position information corresponding to the article based on the predetermined code detected by the code detection unit from a position information management device that manages target position information indicating the target position corresponding to the article. An acquisition unit;
Location program to function as. The predetermined code includes identification information of the marker and location information indicating at least a location of the location information management device,
The target position information acquisition unit accesses the position information management apparatus based on the location information, supplies the identification information to the position information management apparatus, and is acquired by the position information management apparatus based on the identification information. The position specifying program according to claim 5, wherein the target position information is acquired from the position information management device. An imaging unit that is provided on the article and shoots a marker on which a predetermined code is recorded so as to be visible, and generates image data;
An image data acquisition unit that captures the image data generated by the imaging unit;
A marker image detection unit that detects an image of the marker from the image data acquired by the image data acquisition unit;
A code detection unit for detecting the predetermined code from the image of the marker detected by the marker image detection unit;
A position information management unit for managing target position information indicating a target position corresponding to the article;
A target position information acquisition unit that acquires the target position information corresponding to the article based on the predetermined code detected by the code detection unit from the position information management unit;
A position specifying system comprising:

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