Ridge management method, ridge management system, and ridge management program

Abstract

To support a user to grasp the height of ridges provided in a farm field.SOLUTION: A ridge management method includes determining a ridge height representing the height of ridges 510 provided in a farm field 500, on the basis of the working position at each time of a working device 30 which performs a ridge-making work in the farm field 500, and the ridge-making height set in the working device 30. The ridge management method also includes outputting ridge height information representing the determined ridge height. The ridge height information may represent the ridge height of each ridge 510 provided in the farm field 500. The ridge height information may represent the ridge height of the ridges 510 in a small area 520 included in the farm field 500. The ridge management method may further include displaying the ridge height information.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] The present invention relates to a ridge management method, a ridge management system, and a ridge management program.

Background Art

[0002] In recent years, research has been conducted on forming high ridges to improve the drainage of fields.

[0003] For example, Patent Document 1 discloses a technique for cultivating vegetables in high ridges provided in a field.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Whether to provide high ridges or normal ridges in a field has relied on the experience and intuition of workers. The inventors have found that by facilitating the verification of the growth degree cultivated in normal ridges and high ridges, workers can easily determine the height of the ridges.

[0006] In view of the above situation, one of the purposes of the present disclosure is to assist users in grasping the height of ridges provided in a field. Other purposes can be understood from the following description and the explanation of the embodiments.

Means for Solving the Problems

[0007] The means for solving the problems will be described below using the numbers and symbols used in the embodiments for carrying out the invention. These numbers and symbols are added in parentheses for reference in order to show an example of the correspondence relationship between the description in the claims and the embodiments for carrying out the invention. Therefore, the claims should not be construed in a limiting manner based on the description in parentheses.

[0008] The ridge management method according to one embodiment for achieving the above object includes determining a ridge height representing the height of a ridge (510) provided in a field (500) based on a working position (610) at each time of a working device (30) performing ridge-forming work in the field (500) and the ridge-forming height set for the working device (30). The ridge management method also includes outputting ridge height information representing the determined ridge height.

[0009] The ridge management method according to one embodiment for achieving the above object includes determining a ridge height representing the height of a ridge (510) provided in a field (500) based on an aerial image captured from above the field (500). The ridge management method also includes outputting ridge height information representing the determined ridge height.

[0010] A ridge management system (1000) according to one embodiment for achieving the above object includes a ridge height determination unit (160) and an output unit (170). The ridge height determination unit (160) determines a ridge height representing the height of a ridge (510) provided in a field (500) based on a working position (610) at each time of a working device (30) performing ridge-forming work in the field (500) and the ridge-forming height set for the working device (30). The output unit (170) outputs ridge height information representing the determined ridge height.

[0011] A ridge management system (1000) according to one embodiment for achieving the above object includes a ridge height determination unit (160) and an output unit (170). The ridge height determination unit (160) determines a ridge height representing the height of a ridge (510) provided in a field (500) based on an aerial image captured from above the field (500). The output unit (170) outputs ridge height information representing the determined ridge height.

[0012] The ridge management program (410) according to one embodiment for achieving the above object causes the arithmetic devices (120, 220) to determine the ridge height representing the height of the ridge (510) provided in the farmland (500) based on the working position (610) of the working device (30) at each moment when ridge-forming work is performed in the farmland (500) and the ridge-forming height set in the working device (30). Further, the ridge management program (410) causes the arithmetic devices (120, 220) to output ridge height information representing the determined ridge height.

[0013] The ridge management program (410) according to one embodiment for achieving the above object causes the arithmetic devices (120, 220) to determine the ridge height representing the height of the ridge (510) provided in the farmland (500) based on the aerial image captured from above the farmland (500). Further, the ridge management program (410) causes the arithmetic devices (120, 220) to output ridge height information representing the determined ridge height.

Advantages of the Invention

[0014] According to the above aspect, the user can easily grasp the height of the ridge provided in the farmland.

Brief Description of the Drawings

[0015]

Figure 1

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Figure 12

Embodiments for Carrying Out the Invention

[0016] (Embodiment 1) The ridge management system 1000 according to the present embodiment of the present invention will be described with reference to the drawings. In the present embodiment, as shown in FIG. 1, the ridge management system 1000 includes a ridge management device 100 and a terminal 200. The ridge management device 100 is communicably connected to a working device 30 and the terminal 200 via a network 20, for example, the Internet.

[0017] The working device 30 performs ridge forming work while moving in a field 500, for example. The working device 30 includes, for example, a tractor that pulls a ridge forming machine. The working device 30 is provided with a measuring device for measuring its own position, for example, a receiver of GNSS (Global Navigation Satellite System), a quantum compass, etc. The working device 30 measures its own position at each time, for example, at 10 - second intervals, and outputs position information representing the measured position to the ridge management device 100 as operation information.

[0018] Further, the working device 30 may acquire state information representing the state of the working device 30 at each moment, such as the ridge height, speed, steering angle, and ON / OFF status of various clutches in ridge forming work, and output it to the ridge management device 100. When the working device 30 is a vehicle that pulls a ridge forming machine, such as a tractor, the state information may include information such as the PTO (power take-off) rotation speed when transmitting power to the ridge forming machine, the hitch height indicating the attitude of the ridge forming machine, and the lift arm angle. The state information is included in, for example, the operation information and output from the working device 30 to the ridge management device 100.

[0019] Based on the operation information acquired from the working device 30, the ridge management device 100 determines the ridge height representing the height of the ridges provided in the farmland 500. For example, as shown in FIG. 2, the determined ridge height is displayed on the map by the terminal 200 as an image representing the position of the ridge 510 and the ridge height of the ridge 510. For example, the image displayed on the terminal 200 includes a ridge display section 700 representing the ridge 510 provided in the farmland 500 and a ridge height display section 710 representing the ridge height. For example, the ridge display section 700 represents a line indicating the range in which the ridge 510 provided in the farmland 500 extends. The ridge height display section 710 is associated with the ridge display section 700 and represents the numerical value of the ridge height. For example, in FIG. 2, the ridge height display section 710 represents that the height of the ridge 510 is 30 cm. The ridge height may be indicated by representing the ridge display section 700 in a color corresponding to the ridge height.

[0020] By checking the image displayed on the terminal 200, the user can easily grasp the height of the ridge 510 provided in the farmland 500. In particular, when the user has a plurality of farmlands 500, the user can efficiently grasp the height of the ridge 510 provided in each farmland 500.

[0021] (Configuration of the Ridge Management System) The configuration of the ridge management device 100 included in the ridge management system 1000 shown in FIG. 1 will be described. As shown in FIG. 3, the ridge management device 100 includes an input / output device 110, an arithmetic device 120, a communication device 130, and a storage device 140. The ridge management device 100 is a computer including, for example, a cloud server or the like. Information for the arithmetic device 120 to execute processing is input to the input / output device 110. Further, the input / output device 110 outputs the result of the processing executed by the arithmetic device 120. The input / output device 110 includes various input devices and output devices, and includes, for example, a keyboard, a mouse, a microphone, a display, a speaker, a touch panel, and the like. The input / output device 110 may be omitted.

[0022] The communication device 130 is connected to the network 20 and communicates with each device via the network 20. For example, the communication device 130 transfers the operation information acquired from the work device 30 to the arithmetic device 120. Further, the communication device 130 transfers the signal generated by the arithmetic device 120 to the terminal 200. Further, the communication device 130 may acquire information from a device not connected via the network 20. For example, the communication device 130 may acquire information from another device via an arbitrary storage medium, such as a memory card, a USB (Universal Serial Bus) memory, or the like. Further, the communication device 130 may acquire information from another device directly connected by USB or the like. The communication device 130 includes various interfaces such as, for example, a NIC (Network Interface Card), USB, and the like.

[0023] The storage device 140 stores various data for determining the ridge height representing the height of the ridge 510, such as the field data 400, and the ridge management program 410. The storage device 140 is used as a non-transitory tangible storage medium for storing the ridge management program 410. The ridge management program 410 may be provided as a computer program product recorded on a computer-readable storage medium 1, or may be provided as a computer program product downloadable from a server.

[0024] The field data 400 stores information about the field 500 where ridging is performed by the working device 30, such as the location, size, area, etc. Also, the information about the field 500 may represent information about the crops cultivated in the field 500, such as the type of crop, the yield, etc.

[0025] The arithmetic device 120 reads and executes the ridge management program 410 from the storage device 140 to perform various data processes for determining the ridge height representing the height of the ridge 510. For example, the arithmetic device 120 includes a central processing unit (CPU).

[0026] By reading and executing the ridge management program 410, the arithmetic device 120 cooperates with the storage device 140 to realize, as shown in FIG. 4, a data storage unit 150, a ridge height determination unit 160, and an output unit 170. The data storage unit 150 stores the field data 400. The ridge height determination unit 160 determines the ridge height representing the height of the ridge 510 formed by the working device 30 based on the operation information of the working device 30. The output unit 170 outputs the ridge height information representing the ridge height to the terminal 200.

[0027] Next, the configuration of the terminal 200 shown in FIG. 1 will be described. As shown in FIG. 5, the terminal 200 includes an input / output device 210, an arithmetic device 220, a communication device 230, and a storage device 240. The terminal 200 includes, for example, a computer, a tablet, a mobile phone, and the like. Information for the arithmetic device 220 to execute processing is input to the input / output device 210. Further, the input / output device 210 outputs the result of the processing executed by the arithmetic device 220. The input / output device 210 includes various input devices and output devices, and includes, for example, a keyboard, a mouse, a microphone, a display, a speaker, a touch panel, and the like.

[0028] The communication device 230 is connected to the network 20 and communicates with each device via the network 20. For example, the communication device 230 transfers the ridge height information acquired from the ridge management device 100 to the arithmetic device 220. Further, the communication device 230 may output information to other devices not connected via the network 20. For example, the communication device 230 may output information to other devices via an arbitrary storage medium, such as a memory card, a USB (Universal Serial Bus) memory, or the like. Further, the communication device 230 may acquire information from other devices directly connected by USB or the like. The communication device 230 includes various interfaces such as a transceiver used for wireless communication such as a wireless LAN (Local Area Network) or a cellular network, a NIC (Network Interface Card), and a USB.

[0029] The storage device 240 stores various data for displaying the ridge height information acquired from the ridge management device 100, such as a display program 420. The storage device 240 is used as a non-transitory tangible storage medium that stores the display program 420. The display program 420 may be provided as a computer program product recorded on a computer-readable storage medium 2, or may be provided as a computer program product downloadable from a server.

[0030] The arithmetic unit 220 reads and executes the display program 420 from the storage device 240, and performs various data processes for displaying the ridge height information. For example, the arithmetic unit 220 includes a central processing unit (CPU).

[0031] By reading and executing the display program 420, the arithmetic unit 220 cooperates with the storage device 240 to realize the display unit 250 as shown in FIG. 4. The display unit 250 cooperates with the input / output device 210 to display the ridge height information.

[0032] (Operation of the ridge management system) The operation of the ridge management system 1000 will be described. An operator moves to the farm field 500 with the working device 30, for example, a tractor, in order to perform work in the farm field 500. For example, the operator starts a driving device of the working device 30, such as an engine or a motor. When the driving device is started, the working device 30 acquires operation information, specifically, position information and status information. The working device 30 outputs the acquired operation information to the ridge management device 100. For example, the working device 30 sequentially outputs the operation information to the ridge management device 100. Further, when the driving device is stopped, the working device 30 may output the operation information acquired from when the driving device is started until it is stopped to the ridge management device 100.

[0033] When the arithmetic unit 120 of the ridge management device 100 acquires the operation information from the working device 30, it reads and executes the ridge management program 410. When reading and executing the ridge management program 410, the arithmetic unit 120 starts the process shown in FIG. 6, which is part of the ridge management method.

[0034] In step S110, the ridge height determination unit 160 realized by the arithmetic unit 120 determines the positions of the ridges 510 based on the operation information of the working device 30. For example, the ridge height determination unit 160 determines the trajectory 600 along which the working device 30 has advanced during the period when the ridging operation is continuously performed as the position of the ridge 510. For example, as shown in FIG. 7, when the working device 30 moves along the trajectory 600, the positioning position 610 representing the position measured by the positioning device exists on the trajectory 600. Therefore, the ridge height determination unit 160 extracts the operation information during the period when the ridging operation is continuously performed in the order of the measured times, and determines the line connecting the positioning positions 610 represented by the extracted operation information as the position of the ridge 510.

[0035] In this way, the ridge height determination unit 160 first extracts, for example, the operation information corresponding to the period when the ridging operation is performed. For example, the ridge height determination unit 160 extracts the operation information indicating that the ridging machine is lowered as the operation information corresponding to the period when the ridging operation is performed. The ridge height determination unit 160 may extract the operation information in which the speed of the working device 30 is included in the range of the speed at which the ridging operation is performed as the operation information corresponding to the period when the ridging operation is performed. For example, the ridge height determination unit 160 extracts the operation information measured while moving from the first positioning position 610-1 to the fourth positioning position 610-4 as the operation information corresponding to the period when the ridging operation is performed. Also, the ridge height determination unit 160 extracts the operation information corresponding to the fifth positioning position 610-5 as the operation information corresponding to the period when the ridging operation is performed. Here, the positioning position 610 during the period when the ridging operation is performed may be referred to as the working position.

[0036] Next, the ridge height determination unit 160 extracts the operation information that is measured continuously in time from the extracted operation information. For example, when the time interval between the measured times in two pieces of operation information whose measured times are adjacent is less than a threshold value, for example, less than twice the measurement interval, the ridge height determination unit 160 extracts the two pieces of operation information as the operation information measured continuously. For example, it is assumed that the difference between the time when the first measurement position 610-1 is measured and the time when the second measurement position 610-2 is measured is less than twice the measurement interval. In this case, the ridge height determination unit 160 determines that the operation information corresponding to the first measurement position 610-1 and the operation information corresponding to the second measurement position 610-2 are measured continuously. Similarly, the ridge height determination unit 160 determines that the operation information corresponding to the second measurement position 610-2 and the operation information corresponding to the third measurement position 610-3 are measured continuously. On the other hand, since the difference between the time when the fourth measurement position 610-4 is measured and the time when the fifth measurement position 610-5 is measured is twice or more the measurement interval, the ridge height determination unit 160 determines that the operation information corresponding to the fourth measurement position 610-4 and the operation information corresponding to the fifth measurement position 610-5 are not measured continuously.

[0037] Subsequently, the ridge height determination unit 160 determines a line connecting the first measurement position 610-1 to the fourth measurement position 610-4 measured continuously, for example, a straight line segment, as the position of the ridge 510. For example, the ridge height determination unit 160 determines a line connecting the measurement positions 610 corresponding to two pieces of operation information whose measured times are adjacent among the operation information measured continuously as the position of the ridge 510.

[0038] In step S120 shown in FIG. 6, the ridge height determination unit 160 determines the ridge height of each ridge 510 based on the operation information corresponding to each ridge 510. For example, the ridge height determination unit 160 determines the height of the corresponding ridge 510 based on the ridge height represented by a plurality of pieces of operation information corresponding to one ridge 510. The ridge height represented by the operation information represents, for example, the height of the ridge 510 set in the working device 30 when performing the ridging operation. For example, the ridge height determination unit 160 determines a statistical value of the ridge height represented by the corresponding plurality of pieces of operation information, such as an average value, a maximum value, a minimum value, a median value, etc., as the ridge height of the corresponding ridge 510. In the example shown in FIG. 7, the ridge height determination unit 160 determines a statistical value of the ridge height represented by the operation information from the first measurement position 610-1 to the fourth measurement position 610-4, such as an average value, as the ridge height of the ridge 510 extending from the first measurement position 610-1 to the fourth measurement position 610-4. The ridge height determination unit 160 determines the ridge height for each determined ridge 510.

[0039] In step S130 shown in FIG. 6, the output unit 170 outputs ridge height information representing the ridge height of each ridge 510 to the terminal 200. The ridge height information is associated with the farmland 500 and may include, for example, information representing the position of the farmland 500 where the ridge 510 is provided and the position of each ridge 510. For example, the ridge height information may represent an image showing the position of each ridge 510 and the ridge height of each ridge 510 on a map.

[0040] In step S140, the display unit 250 of the terminal 200 displays the ridge height information acquired from the ridge management device 100. For example, as shown in FIG. 2, the display unit 250 displays an image representing a ridge display unit 700 representing the position of the ridge 510 on a map and a ridge height display unit 710 representing the ridge height of the ridge 510. The ridge height of the ridge 510 may be represented by the display format, color, line type, etc. of the ridge display unit 700. For example, the ridge display unit 700 is represented in a display format corresponding to the ridge height of the ridge 510. For example, the ridge display unit 700 can distinguishably represent the ridge 510 with a ridge height of less than 10 cm, the ridge 510 with a ridge height of 10 cm or more and less than 20 cm, the ridge 510 with a ridge height of 20 cm or more and less than 30 cm, and the ridge 510 with a ridge height of 30 cm or more.

[0041] By checking the ridge height information displayed on the terminal 200, the user can easily grasp the ridge height of the ridge 510 provided in the field 500. The display unit 250 may display an image simultaneously representing the ridge heights of the ridges 510 provided in a plurality of fields 500. The user can easily compare the ridge heights of the ridges 510 provided in a plurality of fields 500.

[0042] In addition, the display unit 250 of the terminal 200 may display the yield of the crops cultivated in each field 500 in accordance with the ridge height of each ridge 510. Thereby, the user can easily grasp the relationship between the ridge height of the ridge 510 and the yield.

[0043] (Modification Example Regarding Embodiment 1) The embodiments described above are merely examples, and the configurations described in the embodiments may be arbitrarily changed as long as the functions are not impaired. For example, in step S110 shown in FIG. 6, the ridge height determination unit 160 may determine the position of the ridge 510 by any method. For example, the ridge height determination unit 160 may determine a part of an approximate straight line with respect to the continuously measured positioning positions 610 as the position of the ridge 510. For example, in the example shown in FIG. 7, the ridge height determination unit 160 may determine a part of an approximate straight line with respect to each of the positioning positions 610 from the first positioning position 610-1 to the fourth positioning position 610-4 as the position of the ridge 510. Further, the ridge height determination unit 160 may determine a line segment linearly connecting the first positioning position 610-1 to the fourth positioning position 610-4 as the position of the ridge 510. Further, information representing the area of the ridge 510 may be stored in the field data 400. In this case, the ridge height determination unit 160 may determine the operation information included in the area of the ridge 510 as the operation information during the period when the ridging operation of the ridge 510 is being performed.

[0044] Further, the ridge height determination unit 160 does not necessarily determine the ridge height in units of ridges 510. For example, as shown in FIG. 8, the ridge height determination unit 160 may determine the ridge height in units of a plurality of small regions 520 provided in the region including the farmland 500. For example, the ridge height determination unit 160 extracts the operation information included in each small region 520 from the operation information during the ridge forming operation. The ridge height determination unit 160 determines a statistical value of the ridge height represented in the extracted operation information, such as an average value, a median value, a maximum value, a minimum value, etc., as the ridge height of the ridge 510 in the small region 520. In the example shown in FIG. 8, the ridge height determination unit 160 may determine the average value of the ridge height at the fourth positioning position 610-4 and the ridge height at the sixth positioning position 610-6 included in the first small region 520-1 as the ridge height of the ridge 510 in the first small region 520-1.

[0045] Further, the ridge height determination unit 160 may determine the ridge height in units of the farmland 500. In this case, the ridge height determination unit 160 determines a statistical value of the ridge height at the positioning position 610 included in the farmland 500 from the operation information during the ridge forming operation as the ridge height of the ridge 510 in the farmland 500.

[0046] (Embodiment 2) The ridge management system 1000 may determine the height of the ridge 510 provided in the farmland 500 using an aerial image obtained by imaging the farmland 500 from above. For example, as shown in FIG. 9, the ridge management system 1000 may determine the height of the ridge 510 using an aerial image captured by a satellite 50 flying above the farmland 500.

[0047] For example, the satellite 50 measures the altitude of the farmland 500 by Synthetic Aperture Radar (SAR) at two times, for example, before the ridge forming operation and after the ridge forming operation. Information representing the measured altitude of the farmland 500 is output to the aerial image distribution device 40. In the aerial image distribution device 40, an aerial image representing the altitude difference at each position of the farmland 500 obtained from the two measurement results is generated. For example, the aerial image represents an SAR interference image obtained by an interferometric SAR that measures the altitude difference using the phase difference of the reflected waves of the SAR.

[0048] The ridge management device 100 acquires information representing an aerial image from the aerial image distribution device 40, and determines the ridge height of the ridge 510 provided in the farm field 500 based on the altitude difference represented in the aerial image.

[0049] In this way, the ridge management system 1000 may determine the ridge height of the ridge 510 in the farm field 500 without acquiring the operation information from the working device 30.

[0050] (Configuration of Ridge Management System) The ridge management system 1000 in the present embodiment is the same as that in the first embodiment except that it acquires information representing an aerial image from the aerial image distribution device 40 and the ridge height determination unit 160B realized in the ridge management system 1000. For this reason, detailed description is omitted except for the ridge height determination unit 160B. The ridge height determination unit 160B determines the ridge height representing the height of the ridge 510 provided in the farm field 500 based on the aerial image acquired from the aerial image distribution device 40.

[0051] (Operation of Ridge Management System) The operation of the ridge management system 1000 will be described. When the arithmetic unit 120 of the ridge management device 100 reaches a predetermined time, for example, a preset time every day, it reads and executes the ridge management program 410. When the arithmetic unit 120 reads and executes the ridge management program 410, it starts the process shown in FIG. 11 which is part of the ridge management method.

[0052] In step S115, the ridge height determination unit 160B realized by the arithmetic unit 120 of the ridge management device 100 acquires information regarding the altitude difference between two periods, for example, information representing an aerial image from the aerial image distribution device 40. For example, the ridge height determination unit 160B requests the aerial image distribution device 40 for an aerial image of the area including the farm field 500. The aerial image distribution device 40 outputs information representing the requested aerial image to the ridge management device 100.

[0053] In step S120B, the ridge height determination unit 160B determines the ridge height of the ridges 510 provided in the farm field 500 based on the aerial image. Here, the aerial image represents the altitude difference between the altitude before the ridging operation and the altitude after the ridging operation at each position in the farm field 500. Since the altitude difference can represent the height of the ridges 510 raised by the ridging operation, the ridge height determination unit 160B determines the altitude difference at each position in the farm field 500 as the ridge height of the ridges 510 provided at each position in the farm field 500.

[0054] For example, as shown in FIG. 8, the ridge height determination unit 160B may determine the ridge height of the ridges 510 in units of the small regions 520. In this case, the ridge height determination unit 160B may determine the statistical value of the altitude differences at each position included in the small region 520, such as the average value, the median value, the maximum value, etc., as the ridge height of the ridges 510 in the small region 520. Further, the ridge height determination unit 160B may determine the ridge height of the ridges 510 in the valleys of the farm field 500. In this case, the ridge height determination unit 160B may determine the statistical value of the altitude differences at each position included in the farm field 500, such as the average value, the median value, the maximum value, etc., as the ridge height of the ridges 510 in the farm field 500.

[0055] Since the processing of step S130 and the processing of step S140 are the same as those in the first embodiment, detailed descriptions thereof are omitted.

[0056] In this way, the ridge management system 1000 may determine the ridge height of the ridges 510 provided in the farm field 500 based on the aerial image obtained by imaging the farm field 500 from above.

[0057] (Modification of the Second Embodiment) The embodiments described above are merely examples, and the configurations described in the embodiments may be arbitrarily changed as long as the functions are not impaired. For example, in step S120B shown in FIG. 11, the ridge height determination unit 160B of the ridge management device 100 may determine the ridge height of the ridges 510 provided in the field 500 based on two aerial images captured by a synthetic aperture radar from above the field 500 at two times. For example, the ridge height determination unit 160B may determine the difference between the altitude of each position of the field 500 represented in the aerial image captured before the ridging operation and the altitude of each position of the field 500 represented in the aerial image captured after the ridging operation as the ridge height of the ridges 510 at each position.

[0058] Also, as shown in FIG. 12, the aerial image may be captured from a flying object 60 flying within the atmosphere, for example, a drone. For example, the flying object 60 may acquire an aerial image of the field 500 captured from one location above the field 500. For example, the aerial image may represent an image obtained by receiving light from the field 500, for example, visible light, or may represent a distance image representing the distance to each position measured by outputting light. Also, when the flying object 60 acquires a plurality of aerial images, each of the aerial images may represent an image of the field 500 captured from one location. In this case, the ridge height determination unit 160B may determine the altitude of each position of the field 500 based on the positions of the flying object 60 when capturing the plurality of aerial images, specifically, the difference in the positions of the imaging devices. For example, the plurality of aerial images may represent images captured from each camera of a stereo camera provided on the flying object 60.

[0059] (Modification example) The embodiments and modification examples described above are merely examples, and the configurations described in each embodiment and modification example may be arbitrarily changed as long as the functions are not impaired, and / or may be arbitrarily combined. Furthermore, as long as the required functions can be realized, some of the functions described in the embodiments and modification examples may be omitted.

[0060] For example, part or all of the processing of the ridge management device 100 may be executed by the terminal 200. Also, part or all of the processing of the terminal 200 may be executed by the ridge management device 100. The ridge management program 410 may include a display program 420. The ridge management system 1000 may display the display information on an external terminal that does not include the terminal 200 and is not included in the ridge management system 1000.

[0061] (Appendix) The ridge management method, the ridge management system, and the ridge management program described in each embodiment can be described as follows.

[0062] The ridge management method according to the first aspect is determining a ridge height representing the height of the ridges provided in the field based on the working position of a working device performing ridge forming work at each moment in the field and the height of the ridge forming set for the working device; outputting ridge height information representing the determined ridge height; and including.

[0063] The ridge management method according to the second aspect is the ridge management method according to the first aspect, wherein the ridge height information represents the ridge height of each ridge provided in the field.

[0064] The ridge management method according to the third aspect is determining a ridge height representing the height of the ridges provided in the field based on an aerial image captured from above the field; outputting ridge height information representing the determined ridge height; and including.

[0065] The ridge management method according to the fourth aspect is the ridge management method according to the third aspect, wherein the aerial image represents the altitude difference of the field obtained from the measurement results by synthetic aperture radar (SAR) at two times.

[0066] The ridge management method according to the fifth aspect is the ridge management method according to the fourth aspect, The height difference is represented by an SAR interference image obtained by an interferometric SAR.

[0067] The ridge management method according to the sixth aspect is the ridge management method according to the third aspect, wherein the aerial image represents an image captured from a flying object flying within the atmosphere.

[0068] The ridge management method according to the seventh aspect is the ridge management method according to any one of the first to sixth aspects, wherein the ridge height information represents the ridge height of the ridges in a small area included in the field.

[0069] The ridge management method according to the eighth aspect is the ridge management method according to any one of the first to seventh aspects, further including displaying the ridge height information.

[0070] The ridge management system according to the ninth aspect includes a ridge height determination unit that determines a ridge height representing the height of the ridges provided in the field based on the working position of a working device performing ridge forming work in the field at each time and the ridge forming height set for the working device, and an output unit that outputs ridge height information representing the determined ridge height. The ridge management system according to the tenth aspect

[0071] includes a ridge height determination unit that determines a ridge height representing the height of the ridges provided in the field based on an aerial image captured from above the field, and an output unit that outputs ridge height information representing the determined ridge height. The ridge management program according to the eleventh aspect includes determining a ridge height representing the height of the ridges provided in the field based on the working position of a working device performing ridge forming work in the field at each time and the ridge forming height set for the working device,

[0072] and outputting ridge height information representing the determined ridge height. The ridge management program according to the eleventh aspect includes determining a ridge height representing the height of the ridges provided in the field based on the working position of a working device performing ridge forming work in the field at each time and the ridge forming height set for the working device, Cause the arithmetic unit to execute.

[0073] The ridge management program according to the twelfth aspect Based on an aerial image captured from above the field, determine a ridge height representing the height of the ridges provided in the field; Output ridge height information representing the determined ridge height; Cause the arithmetic unit to execute.

Explanation of Signs

[0074] 1, 2: Storage medium 20: Network 30: Working device 40: Aerial image distribution device 50: Artificial satellite 60: Aircraft 100: Ridge management device 110: Input / output device 120: Arithmetic unit 130: Communication device 140: Storage device 150: Data storage section 160: Ridge height determination section 170: Output section 200: Terminal 210: Input / output device 220: Arithmetic unit 230: Communication device 240: Storage device 250: Display section 400: Field data 410: Ridge management program 420: Display program 500: Field 510: Ridge 520: Small area 600: Orbit 610: Position measurement position (working position) 700: Ridge display section 710: Ridge height display section 1000: Ridge management system

Claims

1. Based on the working position of a working device performing ridge-making work in a field at each moment and the height of the ridge-making set for the working device, determining the ridge height representing the height of the ridges provided in the field; Outputting ridge height information representing the determined ridge height; A ridge management method including the above.

2. The ridge height information represents the ridge height of each ridge provided in the field. The ridge management method according to Claim 1.

3. Based on an aerial image captured from above the field, determining the ridge height representing the height of the ridges provided in the field; Outputting ridge height information representing the determined ridge height; A ridge management method including the above.

4. The aerial image represents the altitude difference of the field obtained from measurement results by synthetic aperture radar (SAR) at two times. The ridge management method according to Claim 3.

5. The altitude difference is represented by a SAR interference image obtained by interferometric SAR. The ridge management method according to Claim 4.

6. The aerial image represents an image captured from a flying object flying within the atmosphere. The ridge management method according to Claim 3.

7. The ridge height information represents the ridge height of the ridges in a small area included in the field. The ridge management method according to any one of Claims 1 to 6.

8. Further including displaying the ridge height information. The ridge management method according to any one of Claims 1 to 6.

9. A ridge height determination unit that determines the ridge height representing the height of the ridges provided in the field based on the working position of a working device performing ridge-making work in the field at each moment and the height of the ridge-making set for the working device; An output unit that outputs ridge height information representing the determined ridge height; A ridge management system including the above.

10. A ridge height determination unit that determines the ridge height representing the height of the ridges provided in the field based on an aerial image captured from above the field; An output unit that outputs ridge height information representing the determined ridge height; A ridge management system including the above.

11. Based on the working position of a working device performing ridge-making work in a field at each moment and the height of the ridge-making set for the working device, determining the ridge height representing the height of the ridges provided in the field; Outputting ridge height information representing the determined ridge height; A ridge management program for causing an arithmetic device to execute the above.

12. Based on an aerial image captured from above the field, determining the ridge height representing the height of the ridges provided in the field; Outputting ridge height information representing the determined ridge height; A ridging management program for causing an arithmetic unit to execute.

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