JP6098071B2 - Course distance calculation method, distance calculation device, and program - Google Patents

Description

  In particular, the present invention relates to a course distance calculation method, a distance calculation device, and a program, which are suitable for calculating a distance of a round course set by jogging or the like.

  For example, Patent Document 1 discloses a technique for arbitrarily setting a course such as jogging on a map. By the way, there is a road as information on the road in the map, which is expressed by the total distance of the center line of the road. In addition, there is also information on the road width (width data) in the map. For example, Patent Document 2 discloses a technique for displaying a map at a plurality of scales using a map having road width data.

JP 2011-120740 A JP 2000-46566 A

  Usually, when walking or the like in an urban area, a circuit course is often set in order to minimize waiting for a signal at a pedestrian crossing or the like. In particular, a course that walks around the outer periphery of a park is selected. There is also a course displaying distance as a round course on the outer periphery of the park, but if there is no course, the approximate distance is calculated by adding the center line of the road. In order to obtain the distance accuracy, a method is used in which the map is enlarged to the maximum and the distance is obtained by adding the distances obtained by manually connecting the points that are finely plotted inside the circuit course.

  There is also a method of setting a circuit course using a movement locus based on actual walking using GPS (Global Positioning System). In this case, since the distance on the center line of the road can be used on the map, it can be used as a correct distance when going around the center line of the road.

  However, according to the method of setting the course by the above-described method, when the entire length of the course becomes long, it is necessary to input points to be plotted in detail, particularly in the case of a curved road. It becomes very complicated and the workload becomes large. Also, depending on the method of setting the course using the movement trajectory, it is not actually walking along the center of the sidewalk or roadway, but it is almost always the innermost course of the circuit course, so the distance of the centerline of the road The total distance obtained is longer than the actual distance, and the accuracy decreases.

  FIG. 3 shows an example of a circuit course set by the above method. According to FIG. 3, symbol a indicates a road that forms a circuit course, symbol b indicates a center line of the road, and symbol c indicates a path that is actually walked. In the case of a round course, the actual walking distance differs between the symbols b and c. For example, in the case of a round course of 5 [km], a deviation of about 100 [m] occurs. As described above, neither the course setting by human hand nor the course setting using the movement trajectory can accurately respond to the user request such as wanting to walk for a net of 5 km, and the actual walking at the time of walking. Reflected in the accuracy of numerical data such as average speed and calories burned, which had to be obtained from the distance, it was regarded as a problem.

  The present invention has been made in order to solve the above-described problems, a course distance calculation method, a distance calculation apparatus, and a distance calculation method capable of performing high-precision distance calculation without accompanying troublesome work during course setting. The purpose is to provide a program.

In order to solve the above-described problem, the distance calculation device according to the first aspect of the present invention is a distance calculation device including at least an input unit, a storage unit, and a display unit that calculates the distance of a set course. there, when the course is set, calculates the distance of the-out based on the width data of the road forming the courses over the course entire length to a value obtained by performing a predetermined calculation, courses full length pre Symbol set An arithmetic processing unit.

  According to the present invention, it is possible to provide a course distance calculation method, a distance calculation apparatus, and a program capable of calculating a distance with high accuracy without a troublesome work in setting a course.

It is a block diagram which shows the structure of the distance calculation apparatus which concerns on embodiment of this invention. It is a flowchart which shows the operation | movement of the circumference course calculation process of the distance calculation apparatus which concerns on embodiment of this invention. It is a figure which shows an example of the course set on a map by the conventional round course setting method.

  Hereinafter, an embodiment for carrying out the present invention (hereinafter simply referred to as an embodiment) will be described in detail with reference to the accompanying drawings.

(Configuration of the embodiment)
FIG. 1 is a block diagram showing the configuration of the distance calculation apparatus according to this embodiment. As shown in FIG. 1, the distance calculation apparatus 1 according to the present embodiment calculates a distance of a set course, and includes an arithmetic processing unit 10, a storage unit 20, an input unit 30, a display unit 40, And a power supply 50.

  The storage unit 20 is, for example, a semiconductor storage device having a DRAM (Dynamic Random Access Memory) or SDRAM (Synchronous DRAM) as a storage element, or a magnetic disk device such as an HD (Hard Disc). In addition to the program area 200 to be stored, a map area 201 to which map information is stored, an area obtained from the outside or stored in the database as width data 202 prepared in advance, or set based on actual walking The course data 203 and the like are stored in divided areas.

  The input unit 30 is, for example, an input device such as a key switch or a pointing device such as a mouse. The input unit 30 issues an event that is a course setting request to the arithmetic control unit 10 when operated by the user, and then performs an operation of tracing the map displayed on the display unit 40 in order to set the course. By inputting (trace), continuous coordinate positions are input. The display unit 40 is a display monitor having a display element such as an LCD (Liquid Crystal Device) or an organic EL (Organic Electro-Luminescense). The display unit 40 displays map information generated by the calculation control unit 10, a round course set by the input unit 30, and the like, and various messages are displayed by the calculation processing unit 10.

  The power supply 50 is a battery that supplies power to each hardware block that configures the distance calculation device 1 such as the arithmetic processing unit 10, the storage unit 20, the input unit 30, and the display unit 40. Note that the input unit 30 and the display unit 40 may be replaced by a touch panel in which the input function of the input unit 30 and the display function of the display unit 40 are integrated.

  The arithmetic processing unit 10 is, for example, a microprocessor, and when a course is set by sequentially reading and executing a program according to the present embodiment stored in the program area 200 of the storage unit 20, a road that forms the course A process of calculating the distance of the course set based on a value obtained by performing a predetermined calculation on the width data is executed.

  Here, in setting the course, the arithmetic processing unit 10 reads the movement trajectory data stored in the area of the course data 203 of the storage unit 20 or the input unit 30 traces the map displayed on the display unit 40. This is done by taking in the movement trajectory data obtained by doing this. Further, the width data is calculated from the map area 201 of the storage unit 20 or from map data acquired via a network (not shown), or is stored in a predetermined area of the storage unit 20 (width data area 202). Get from.

  In calculating the distance of the circuit course, the arithmetic processing unit 10 calculates an average value of the road width of the roads forming the circuit course, and calculates a first average value (an average road width “walking center average distance” described later), and The average value of the distance from the center of gravity of the surface surrounded by the round course to the center line of the road width is calculated to obtain a second average value (“walking center average distance” described later), and this first average The distance of the course set by subtracting the distance corresponding to the ratio between the value and the second average value from the distance on the center line of the road width is calculated. At this time, the calculation control unit 10 recognizes the shape of the course, multiplies a constant defined for each recognized shape by a value obtained by performing a predetermined calculation on the width data, and calculates the distance obtained by the multiplication as the road width. The distance of the set course may be calculated by subtracting from the distance on the center line.

  For this reason, if the structure of the program according to the present embodiment executed by the arithmetic processing unit 10 is expanded by function as shown in FIG. 1, the main control unit 100, the map display processing unit 101, and the movement trajectory use process are obtained. Unit 102, course input processing unit 103, road matching processing unit 104, road distance calculation processing unit 105, road average width calculation processing unit 106, circle center of gravity determination processing unit 107, and round course average radius calculation A processing unit 108, a round course distance correction calculation processing unit 109, a course storage processing unit 110, and a correction course display processing unit 111 are included.

  The map display processing unit 101 obtains via a network (not shown) under sequence control by the main control unit 100 or reads a map stored in the map area 201 of the storage unit 20 and further stores a course in the storage unit 20. The circular course information stored as the data 203 is read and output to the display unit 40. For example, as shown in FIG. 3, the process for superimposing and displaying a circuit course on a map is performed.

  When a course setting request based on the movement trajectory is detected under sequence control by the main control unit 100, the movement trajectory use processing unit 102 relates to a past movement trajectory based on actual walking from the area of the course data 203 in the storage unit 20. Data is read out and a process of setting as a round course on the map displayed on the display unit 40 is executed. When a course setting request by manual input is detected under sequence control by the main control unit 100, the course input processing unit 103 captures movement trajectory data obtained by a tracing operation that traces on the map by the input unit 30, and displays the display unit. The process of plotting on the map displayed at 40 and setting the circuit course is executed.

  The road matching processing unit 104 executes a process of identifying a road in the map from each latitude and longitude information indicated by a moving track or a round course set by a tracing operation under sequence control by the main control unit 100. The road distance calculation processing unit 105 calculates the total distance of the center line of the road in order to calculate the distance of the circuit course indicated by the result of the road matching processing by the road matching processing unit 104 under the sequence control by the main control unit 100. The process of calculating is executed.

  Under the sequence control by the main control unit 100, the road average width calculation processing unit 106 subtracts half the distance of the road width from the center line of the road, and further subtracts, for example, 1 [m] corresponding to the walking width of the person. The process which calculates | requires the average road width (walking center average distance) which positions the determined value as an actual walking route is performed. The center-of-circumference center of gravity determination processing unit 107 executes a process of determining the center of gravity (center point) of the surface surrounded by the circuit course under sequence control by the main control unit 100. Here, the center of gravity is determined by approximating the round course with a polygon and obtaining the intersection of a line segment connecting each vertex and the midpoint of the opposite side for each triangle constituting the polygon.

  The round course average radius calculation processing unit 108 calculates the average of the distance from the center of gravity of the round course determined by the round course center of gravity determination processing unit 107 under the sequence control by the main control unit 100 to the center line of the road. Execute. The value obtained by subtracting the average road width calculated by the road average width calculation processing unit 106 from the road center average distance obtained here is the walking center average distance. The round course distance correction calculation processing unit 109 calculates the walking center average distance calculated by the road average width calculation processing unit 106 under the sequence control by the main control unit 100, and the road center average calculated by the round course average radius calculation processing unit 108. By dividing by the distance, a ratio (ratio) of the two distances is obtained, and a process of calculating the correction distance by multiplying the ratio by the total distance of the road center line is executed.

  The course storage processing unit 110 executes processing for storing the correction distance calculated by the round course distance correction calculation processing unit 109 in the storage unit 20 under sequence control by the main control unit 100. The correction course display processing unit 111 executes processing for reading the correction distance stored in the storage unit 20 by the course storage processing unit 110 and displaying it on the display unit 40 under sequence control by the main control unit 100.

  The correction course display processing unit 111 and the map display processing unit 101 are all assigned display information such as a map and a round course generated by each functional block constituting the arithmetic processing unit 10 to a predetermined area of the storage unit 20. A desired display can be obtained by drawing in VRAM (Video RAM) or an external VRAM (not shown), reading it out in synchronization with the display timing of the display unit 40, and outputting it to the display unit 40.

  The main control unit 100, when the course is set, the main control unit 100 calculates a course distance set based on a value obtained by performing a predetermined computation on the width data of the road forming the course. In addition to controlling the sequence control of each of the functional blocks 101 to 111, the storage unit 20, the input unit 30, the display unit 40, and the power supply 50 connected as peripheral devices are also controlled.

(Operation of the embodiment)
Hereinafter, the operation of the round course calculation process of the distance calculation device 1 shown in FIG. 1 will be described in detail with reference to the flowchart shown in FIG.

  First, when the user issues a course setting request by operating the input unit 30, in the arithmetic processing unit 10, the map display processing unit 101 displays a map display of relevant locations to set a course on the display unit 40. This is performed (step S101). Here, in the case where the movement locus is used for course setting (step S102 “Yes”), in the arithmetic processing unit 10, the movement locus utilization processing unit 102 is stored in the area of the course data 203 of the storage unit 20. The movement locus is read out, and the movement locus is superimposed on the map displayed on the display unit 40 (step S103).

  On the other hand, when the movement locus is not used (step S102 “No”), the user operates the input unit 30 to execute an operation of tracing on the map displayed on the display unit 40. Here, tracing refers to inputting a course setting by tracing the map with a finger or a mouse, for example. In the arithmetic processing unit 10, the course input processing unit 103 executes a process for course setting input in which the coordinates of the trajectory obtained by the tracing operation are continuously taken and plotted (step S104).

  When the course setting input process ends (step S105 “Yes”), in the arithmetic processing unit 10, the main control unit 100 determines whether or not the movement trajectory or the trace trajectory is a round course (step S106). Whether or not the course is a round course is determined by whether or not the movement locus or trace locus is closed by a polygon or the like. If it is determined here that the course is a circular course (step S106 “Yes”), in the arithmetic processing unit 10, the road matching processing unit 104 identifies a road in the map from the information on the latitude and longitude indicated by the circular course. Execute the process.

  On the other hand, when it is determined that the course is not a circuit course (“No” at step S106), in the arithmetic processing unit 10, the main control unit 100 displays a message asking the intention of correction to the circuit course on the display unit 40, for example. . In response to this, when the user operates the input unit 30 to indicate that there is an intention to modify the circuit course (step S107 “Yes”), the arithmetic processing unit 10 causes the main control unit 100 to enter the circuit course. A correction process is performed (step S108), the road matching processing unit 104 is activated, and the road matching processing unit 104 is caused to execute a process of identifying a road in the map from the information on the latitude and longitude indicated by the circuit course (step S108). S109).

  Next, in the arithmetic processing unit 10, the main control unit 100 activates the road distance calculation processing unit 105 in order to calculate the distance of the circuit course that has undergone the road matching process, and the road distance calculation processing unit 105 A process of calculating the total distance of the center line is executed (step S110). The main control unit 100 displays the calculation result by the road distance calculation processing unit 105 on the display unit 40 and displays a message asking the user whether or not the circuit course is corrected.

  In the arithmetic processing unit 10, if the main control unit 100 does not request the correction of the circuit course (“No” at step S <b> 111), the course storage processing unit 110 is activated and the set circuit course is stored in the course storage processing unit 110. The course storage process stored in the area of the course data 203 of the unit 20 is executed. On the other hand, if there is a request for correction of the round course (step S111 “Yes”), the main control unit 100, the road average width calculation processing unit 106, the round course center of gravity determination processing unit 107, the round course average radius calculation processing unit 108, Each of the round course distance correction calculation processing unit 109 is activated to cause each of the function blocks 106 to 109 to calculate the average road width (walking center average distance) and the road center average distance, and further, the walking center average distance and the walking. A process for correcting the distance of the round course from the ratio with the center average distance is executed.

  By the way, the distance of a line passing through the center line of the road is recorded in the map stored in the map area 201 of the storage unit 20 or the map information acquired via the network. This is recorded on the map as information used to express the distance to the destination when a route search is performed by the car navigation system. The detailed map also records width data. At this time, since the half distance of the road is the distance from the center line to the innermost position, the information can also be used as recorded on the map. By the way, half of the road width is the distance from the center line of the road to the inner edge, and the innermost part of the sidewalk is actually hard to walk against the inner fence or wall, so the position that is 1 meter outside from the innermost part. Walking is generally done. That is, the distance obtained by subtracting 1 m from half the road width is the distance (innermost course) from the center line to the line actually walking.

  At this time, since the road width of the circuit course is not all the same, the average road width (walking center average distance) is calculated by adding all the road widths of the circuit course. Then, an average of the distances from the center of gravity of the surface surrounded by the course to the center line of the circuit course (road center line average distance) is obtained. By calculating the distance between the two distances (average walking center distance / road center line average distance) from the total distance on the center line of the circuit course, a distance close to the actual walking distance is obtained by calculation. be able to.

  In order to realize this, in the arithmetic processing unit 10, the road average width calculation processing unit 106 subtracts a distance that is half of the road width from the center line of the road, and further subtracts 1 m of the walking width of the person. A process of positioning as an actual walking route is executed (step S113). Here, it is the width obtained from the average of the road width of the entire circuit course, and is called the average road width (α). Next, in the arithmetic processing unit 10, the in-round course center-of-gravity determination processing unit 107 executes a process for obtaining the center point in the round-about course, and the in-round course average radius calculation processing unit 108 is in the in-round course center of gravity determination processing unit 107. The average of the distance from the center point determined in step 1 to the center line of the road is calculated (step S114). The distance obtained here is called the road centerline average distance (β). A value obtained by subtracting the previous average road width from the road center average distance is the walking center average distance.

  Subsequently, the round course distance correction calculation processing unit 109 divides the walking center average distance α by the road center average distance β to obtain a ratio γ of the two distances (step S115). Then, the correction distance corresponding to the actual distance actually walking is calculated by multiplying the ratio γ by the total distance of the road center line (step S116).

  Next, in the arithmetic processing unit 10, the main control unit 100 activates the course storage processing unit 110, and the course storage processing unit 110 calculates the correction distance calculated by the round course distance correction calculation processing unit 109 from the course data in the storage unit 20. The process stored in the area 203 is executed (step S117). Further, the main control unit 100 activates the correction course display processing unit 111, and the correction course display processing unit 111 executes correction course display processing for displaying the correction distance on the display unit 40 (step S118). A series of operation | movement in the above-mentioned round course calculation process is complete | finished.

  According to the above-described ratio γ = walking center distance α / road center average distance β, according to the method of calculating the total corrected distance of the road centerline distance, the average of all the distances from the center point of the circuit course Therefore, the longer the distance, the longer the calculation process. For this reason, it is possible to speed up the processing by simplifying the calculation processing by performing calculation by thinning out the processing of taking all the averages, but the accuracy may be lowered. Therefore, when the arithmetic processing unit 10 recognizes the shape of the circuit course and can determine that the circuit course is a polygonal circuit surrounded by a straight road, the correction distance may be calculated by the following simple method. Conceivable.

  That is, in order to obtain the distance actually walked by calculation, as a simple method, the average road width (width of the half of the road −1 m) is α, and if the round course is a triangle, 6√3α is subtracted. If so, the process is simplified by calculation using constants, such as subtracting 8α, subtracting 7.26α if it is a pentagon, and 6.93α if it is a hexagon. In addition, a certain accuracy can be maintained in the calculation result.

(Effect of embodiment)
As described above, according to the distance calculation device 1 according to the present embodiment, when the course is set, the calculation processing unit 10 obtains a value obtained by performing a predetermined calculation on the width data of the road forming the course. By calculating the distance of the course set based on it, the workload for creating the original course as a walking course is reduced. Specifically, when setting the road by yourself, you can save time and effort to set the course finely, you can easily set the circuit course just by specifying the road to fly, and the value close to the actual distance The course can be adjusted easily because it can be displayed quickly. Although only the case of walking on a jogging course used for jogging (walking) has been described here, the same applies to the case of running on a running course used for running.

  In addition, even when using a trajectory that is the result of a test walk or a test run, the distance through the center line of the road can be calculated by executing a road matching process that matches the road to correct errors such as GPS. In addition, since the distance is calculated automatically when walking inside the circuit course, the distance calculation value using the center line of the road can be automatically subtracted from the distance to the sidewalk. In addition to eliminating the need for detailed course preparation, distance data with little difference from the actual distance can be used. Therefore, for example, it is possible to accurately respond to user requests such as wanting to walk a net of 5 [km], and the accuracy of numerical data such as average speed and various calories required from the actual distance of walking and running can be reduced. It is possible to increase without requiring.

  Further, the arithmetic processing unit 10 recognizes the shape of the course, multiplies a constant defined for each recognized shape by a value obtained by performing a predetermined operation on the width data, and calculates the distance obtained by this multiplication as the road width. It is also possible to calculate the correction distance by a simple method of calculating the distance of the set course by subtracting from the distance on the center line of this, and in this case, the calculation processing time can be shortened while maintaining a certain accuracy. .

  Although the distance calculation device 1 according to the present embodiment has been described as acquiring the width data via a network or from a database, it may be acquired by calculation from a map figure in which the road shape is accurately represented. Good. Further, the distance calculation device 1 according to the present embodiment may be realized by a general-purpose machine such as a PC (Personal Computer), or may be realized by a dedicated machine such as a portable device such as a GPS clock. Good.

  The course distance calculation method according to the present embodiment includes, for example, at least an input unit 30, an arithmetic processing unit 10, and a display unit 40 that calculate a set course distance, as shown in FIG. This is a course distance calculation method used in the distance calculation apparatus 1. Then, for example, as shown in FIG. 2, the value obtained by the arithmetic processing unit 10 performing a predetermined calculation on the steps (S101 to S109) for setting the course and the width data of the road forming the set course. And calculating the distance of the set course and outputting it to the display unit (S110 to S118).

  According to the course distance calculation method according to the present embodiment, it is possible to calculate the distance with high accuracy without a troublesome work in setting the course. Therefore, for example, it is possible to accurately respond to a user request such as wanting to walk for a net of 5 km, and it takes time and effort to obtain accuracy of numerical data such as average speed and various calories that need to be calculated from the actual distance of walking and running. It can be increased without any problems.

  The program according to this embodiment is, for example, as shown in FIG. This is a program used by the distance calculation device 1 that is executed by a computer (calculation processing unit 10) and calculates the distance of a set course. For example, as shown in FIG. 2, when a course is set in the computer (arithmetic processing unit 10) (S101 to S109), and the course is set, the width data of the road that forms the course is predetermined. And a process (S110 to S118) of calculating and outputting a distance of the course set based on a value obtained by performing the calculation.

  According to the program according to the present embodiment, the arithmetic processing unit 10 reads out a program stored in a predetermined area of the storage unit 20 and sequentially executes the program, so that the accuracy of the setting can be improved without complicated work at the time of course setting. It is possible to provide a distance calculation device that enables high distance calculation.

As mentioned above, although preferred embodiment of this invention was explained in full detail, it cannot be overemphasized that the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiments. Further, it is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.
The claims appended at the time of filing this application will be appended below.
[Claim 1]
A distance calculation device having at least an input unit, a storage unit, and a display unit for calculating a distance of a set course,
When the course is set, an arithmetic processing unit that calculates the distance of the set course based on a value obtained by performing a predetermined calculation on the width data of the road forming the course,
A distance calculation device comprising:
[Claim 2]
The arithmetic processing unit includes:
2. The distance calculation apparatus according to claim 1, wherein when the course is set, the movement trajectory data stored in the storage unit is read and the course is set.
[Claim 3]
The arithmetic processing unit includes:
2. The distance calculation apparatus according to claim 1, wherein when the map displayed on the display unit is detected to be traced by the input unit, the course is set by taking movement trajectory data obtained by the trace. .
[Claim 4]
The arithmetic processing unit includes:
The distance calculation apparatus according to claim 1, wherein the width data is calculated from map data acquired via the storage unit or a network.
[Claim 5]
The arithmetic processing unit includes:
The distance calculation apparatus according to claim 1, wherein the width data is acquired from a database stored in the storage unit.
[Claim 6]
The arithmetic processing unit includes:
The average value of the road width of the road forming the course is calculated to obtain a first average value, and the average value of the distance from the center of gravity of the surface surrounded by the course to the center line of the road width is calculated. Obtaining an average value of 2, subtracting the distance corresponding to the ratio of the first average value and the second average value from the distance on the center line of the road width to calculate the distance of the set course,
The distance calculation apparatus according to claim 1, wherein
[Claim 7]
The arithmetic processing unit includes:
Recognition of the shape of the course, a constant defined for each recognized shape is multiplied by a value obtained by performing a predetermined calculation on the width data, and the distance obtained by the multiplication is calculated from the distance on the center line of the road width. Calculate the distance of the set course by subtracting,
The distance calculation apparatus according to claim 1, wherein
[Claim 8]
A distance calculation method for a course used in a distance calculation device having at least an input unit, an arithmetic processing unit, and a display unit, which calculates a set course distance,
The arithmetic processing unit is
Setting the course;
Calculating the distance of the set course based on a value obtained by performing a predetermined calculation on the width data of the road forming the set course, and outputting to the display unit;
A course distance calculation method characterized by comprising:
[Claim 9]
A program used by a distance calculation device that is executed by a computer and calculates a distance of a set course,
In the computer,
Processing to set the course;
When the course is set, a process of calculating and outputting the distance of the set course based on a value obtained by performing a predetermined calculation on the width data of the road forming the course;
A program that executes

  DESCRIPTION OF SYMBOLS 1 ... Distance calculation apparatus, 10 ... Operation processing part, 20 ... Memory | storage part, 30 ... Input part, 40 ... Display part, 50 ... Power supply, 100 ... Main control part, 101 ... Map (course) display processing part, 102 ... Movement Trajectory use processing unit 103 ... Course input processing unit 104 ... Road matching processing unit 105 ... Road distance calculation processing unit 106 ... Road average width calculation processing unit 107 ... Circular course center of gravity determination processing unit 108 ... Circuit course Average radius calculation processing unit 109 ... Round course distance correction calculation processing unit 110 ... Course storage processing unit 111 ... Correction course display processing unit

Claims (9)

A distance calculation device having at least an input unit, a storage unit, and a display unit for calculating a distance of a set course,
If the course is set, the arithmetic processing unit for calculating the distance of the-out based over the course entire length width data of the road forming the courses to a value obtained by performing a predetermined calculation, courses full length pre Symbol Set ,
A distance calculation device comprising: The arithmetic processing unit includes:
2. The distance calculation apparatus according to claim 1, wherein when the course is set, the movement trajectory data stored in the storage unit is read and the course is set. The arithmetic processing unit includes:
2. The distance calculation apparatus according to claim 1, wherein when the map displayed on the display unit is detected to be traced by the input unit, the course is set by taking movement trajectory data obtained by the trace. . The arithmetic processing unit includes:
The distance calculation apparatus according to claim 1, wherein the width data is calculated from map data acquired via the storage unit or a network. The arithmetic processing unit includes:
The distance calculation apparatus according to claim 1, wherein the width data is acquired from a database stored in the storage unit. The arithmetic processing unit includes:
The average value of the road width of the road forming the course is calculated to obtain a first average value, and the average value of the distance from the center of gravity of the surface surrounded by the course to the center line of the road width is calculated. Obtaining an average value of 2, subtracting the distance corresponding to the ratio of the first average value and the second average value from the distance on the center line of the road width to calculate the distance of the set course,
The distance calculation apparatus according to claim 1, wherein The arithmetic processing unit includes:
Recognition of the shape of the course, a constant defined for each recognized shape is multiplied by a value obtained by performing a predetermined calculation on the width data, and the distance obtained by the multiplication is calculated from the distance on the center line of the road width. Calculate the distance of the set course by subtracting,
The distance calculation apparatus according to claim 1, wherein Calculate the distance of the set course, at least an input unit, an arithmetic processing unit, a display unit,
A distance calculation method for a course used in a distance calculation device having:
The arithmetic processing unit is
Setting the course;
By calculating the distance of the the width data of a road that forms the set course throughout the course entire length-out based on the value obtained by performing a predetermined calculation, courses full length pre Symbol set, and outputs to the display unit Steps,
A course distance calculation method characterized by comprising: A program used by a distance calculation device that is executed by a computer and calculates a distance of a set course,
In the computer,
Processing to set the course;
If the course is set,-out based on the value obtained by applying a predetermined arithmetic operation to width data of the road forming the courses over the course entire length, pre SL by calculating the distance of the course full-length set Output Processing,
A program that executes

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