PROBE DATA PROCESSING APPARATUS, PROBE DATA PROCESSING METHOD, PROGRAM, AND PROBE DATA PROCESSING SYSTEM
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Abstract
In probe data tallying, tallying with a high-resolution spatial granularity is enabled, and high-precision tallying is enabled by suppressing loss of the information quantity of the probe data. A data recording part records probe data generated by a vehicle, which is a probe. A filter coefficient recording part associates filter coefficients determined depending on distances between a road, which is a geographic element existing in a geographic range segmented into a plurality of regions, and the plurality of regions, with the plurality of regions, respectively, and records the filter coefficients. A filter computation processing part selects regions corresponding to the probe data recorded by the data recording part, respectively, from among the plurality of regions, reads the filter coefficients associated with the selected regions and recorded by the filter coefficient recording part, respectively, weights the probe data with the filter coefficients, respectively, and tallies the probe data.
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Citations
27 Claims
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1-11. -11. (canceled)
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12. A probe data processing apparatus comprising:
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a data recording circuit that records a plurality of pieces of probe data generated by a probe which observes a traffic jam degree and indicating observation positions and observed traffic jam degrees, to a storage device; a filter coefficient recording circuit that segments a geographic range including a road for which a traffic jam degree is to be calculated, into a plurality of regions such that not less than one region out of the plurality of regions includes the road, associates filter coefficients determined depending on distances between a line formed by the road and the plurality of regions, with the plurality of regions, respectively, and records the filter coefficients to the storage device; and a filter computation processing circuit that reads the plurality of pieces of probe data recorded by the data recording circuit and the filter coefficients recorded by the filter coefficient recording circuit, from the storage device, calculates a traffic jam degree of the road from the traffic jam degrees indicated by the plurality of pieces of probe data and the filter coefficients associated with regions where exist the observation positions indicated by the plurality of pieces of probe data, out of the plurality of regions, and outputs the calculated traffic jam degree of the road. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A probe data processing apparatus comprising:
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a data recording circuit that records a plurality of pieces of probe data generated by a probe which observes a speed of a vehicle and indicating observation positions and observed speeds, to a storage device; a filter coefficient recording circuit that segments a geographic range including a road for which a speed of a vehicle is to be calculated, into a plurality of regions such that not less than one region out of the plurality of regions includes the road, associates filter coefficients determined depending on distances between a line formed by the road and the plurality of regions, with the plurality of regions, respectively, and records the filter coefficients to the storage device; and a filter computation processing circuit that reads the plurality of pieces of probe data recorded by the data recording circuit and the filter coefficients recorded by the filter coefficient recording circuit, from the storage device, calculates a speed of a vehicle traveling on the road from the speeds indicated by the plurality of pieces of probe data and the filter coefficients associated with regions where exist the observation positions indicated by the plurality of pieces of probe data, out of the plurality of regions, and outputs the calculated speed of the vehicle traveling on the road. - View Dependent Claims (20, 21, 22, 23)
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24. A probe data processing method comprising:
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recording a plurality of pieces of probe data generated by a probe which observes a traffic jam degree and indicating observation positions and observed traffic jam degrees, to a storage device; segmenting a geographic range including a road for which a traffic jam degree is to be calculated, into a plurality of regions such that not less than one region out of the plurality of regions includes the road, associating filter coefficients determined depending on distances between a line formed by the road and the plurality of regions, with the plurality of regions, respectively, and recording the filter coefficients to the storage device; and reading the plurality of pieces of probe data and the filter coefficients from the storage device, calculating a traffic jam degree of the road from the traffic jam degrees indicated by the plurality of pieces of probe data and the filter coefficients associated with regions where exist the observation positions indicated by the plurality of pieces of probe data, out of the plurality of regions, and outputting the calculated traffic jam degree of the road.
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25. A probe data processing method comprising:
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recording a plurality of pieces of probe data generated by a probe which observes a speed of a vehicle and indicating observation positions and observed speeds, to a storage device; segmenting a geographic range including a road for which a speed of a vehicle is to be calculated, into a plurality of regions such that not less than one region out of the plurality of regions includes the road, associating filter coefficients determined depending on distances between a line formed by the road and the plurality of regions, with the plurality of regions, respectively, and recording the filter coefficients to the storage device; and reading the plurality of pieces of probe data and the filter coefficients from the storage device, calculating a speed of a vehicle traveling on the road from the speeds indicated by the plurality of pieces of probe data and the filter coefficients associated with regions where exist the observation positions indicated by the plurality of pieces of probe data, out of the plurality of regions, and outputting the calculated speed of the vehicle traveling on the road.
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26. A non-transitory computer readable medium including a computer executable program that causes a computer to execute:
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a data recording process of recording a plurality of pieces of probe data generated by a probe which observes a traffic jam degree and indicating observation positions and observed traffic jam degrees, to a storage device; a filter coefficient recording process of segmenting a geographic range including a road for which a traffic jam degree is to be calculated, into a plurality of regions such that not less than one region out of the plurality of regions includes the road, associating filter coefficients determined depending on distances between a line formed by the road and the plurality of regions, with the plurality of regions, respectively, and recording the filter coefficients to the storage device; and a filter computing process of reading the plurality of pieces of probe data recorded by the data recording process and the filter coefficients recorded by the filter coefficient recording process, from the storage device, calculating a traffic jam degree of the road from the traffic jam degrees indicated by the plurality of pieces of probe data and the filter coefficients associated with regions where exist the observation positions indicated by the plurality of pieces of probe data, out of the plurality of regions, and outputting the calculated traffic jam degree of the road.
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27. A non-transitory computer readable medium including a computer executable program that causes a computer to execute:
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a data recording process of recording a plurality of pieces of probe data generated by a probe which observes a speed of a vehicle and indicating observation positions and observed speeds, to a storage device; a filter coefficient recording process of segmenting a geographic range including a road for which a speed of a vehicle is to be calculated, into a plurality of regions such that not less than one region out of the plurality of regions includes the road, associating filter coefficients determined depending on distances between a line formed by the road and the plurality of regions, with the plurality of regions, respectively, and recording the filter coefficients to the storage device; and a filter computing process of reading the plurality of pieces of probe data recorded by the data recording process and the filter coefficients recorded by the filter coefficient recording process, from the storage device, calculating a speed of a vehicle traveling on the road from the speeds indicated by the plurality of pieces of probe data and the filter coefficients associated with regions where exist the observation positions indicated by the plurality of pieces of probe data, out of the plurality of regions, and outputting the calculated speed of the vehicle traveling on the road.
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Specification