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US 12,709,846 B2Granted
Road surface management device, road surface management method, and recording medium
AssigneeNEC Corporation
InventorsChisato Sugawara, Toshimichi Yokote, Yosuke Kimura
Life of this patent
Estimating the term…
Abstract
A road surface management device 1 includes a deterioration detection unit 2, a deterioration index calculation unit 3, and a display processing unit 4. The deterioration detection unit 2 detects a crack in a road surface on the basis of an image of the road surface acquired from a vehicle. The deterioration index calculation unit 3 calculates, for the detected crack, a crack width and a crack rate on the basis of the image. The display processing unit 4 superimposes the calculated crack width and crack rate on the road surface on a map.
Claims17
An apparatus comprising:
- a memory storing instructions, time series information about a crack width of a crack of a road surface, and time series information about a crack rate of the crack of the road surface;
- and
- at least one processor configured to execute the instructions to:
- detect, based on an image of the road surface acquired from a sensor or sensors mounted on a mobile body, the crack of the road surface;
- calculate the crack width and the crack rate of the detected crack based on at least one of the image and an acceleration of the mobile body acquired from the sensor or sensors mounted on the mobile body;
- store the calculated crack width and the calculated crack rate in the memory in time series;
- exclude or correct an outlier in at least one of the time series information about the crack width and the time series information about the crack rate, which are stored in the memory, by a statistical process;
- calculate a rate of change in an index value of at least one of the crack width and the crack rate in a predetermined period, based on the time series information about the crack width or the time series information about the crack rate that has been subjected to the statistical process;
- predict deterioration of the crack of the road surface based on the rate of change;
- and
- display the calculated crack width and the calculated crack rate over the road surface on a map in a superimposed manner, thereby reducing a burden of management regarding deterioration of the road surface.
8 more elements
A method comprising:
- detecting, based on an image of a road surface acquired from a sensor or sensors mounted on a mobile body, a crack of the road surface;
- calculating a crack width and a crack rate of the detected crack based on at least one of the image and an acceleration of the mobile body acquired from the sensor or sensors mounted on the mobile body;
- storing the calculated crack width and the calculated crack rate in a memory in time series;
- exclude or correct an outlier in at least one of time series information about the crack width and time series information about the crack rate, which are stored in the memory, by a statistical process;
- calculating a rate of change in an index value of at least one of the crack width and the crack rate in a predetermined period, based on the time series information about the crack width or the time series information about the crack rate that has been subjected to the statistical process;
- predicting deterioration of the crack of the road surface based on the rate of change;
- and
- displaying the calculated crack width and the calculated crack rate over the road surface on a map in a superimposed manner, thereby reducing a burden of management regarding deterioration of the road surface.
5 more elements
A recording medium non-transitorily storing a program for causing a computer to execute the processes of:
- detecting, based on an image of a road surface acquired from a sensor or sensors mounted on a mobile body, a crack of the road surface;
- calculating a crack width and a crack rate of the detected crack based on at least one of the image and an acceleration of the mobile body acquired from the sensor or sensors mounted on the mobile body;
- storing the calculated crack width and the calculated crack rate in a memory in time series;
- exclude or correct an outlier in at least one of time series information about the crack width and time series information about the crack rate, which are stored in the memory, by a statistical process;
- calculating a rate of change in an index value of at least one of the crack width and the crack rate in a predetermined period, based on the time series information about the crack width or the time series information about the crack rate that has been subjected to the statistical process;
- predicting deterioration of the crack of the road surface based on the rate of change;
- and
- displaying the calculated crack width and the calculated crack rate over the road surface on a map in a superimposed manner, thereby reducing a burden of management regarding deterioration of the road surface.
5 more elements
Dependencies are inferred from the claim text.