Two-wheel vehicle riding person number determination method, two-wheel vehicle riding person number determination system, two-wheel vehicle riding person number determination apparatus, and program

Abstract

The present invention is a two-wheel vehicle riding person number determination system including an imaging means configured to image a two-wheel vehicle that is installed in a predetermined position and travels on a road, and a two-wheel vehicle riding person number determining means configured to process an image of the imaging means, extract a contour shape of an upper position of the two-wheel vehicle that travels on the road, detect humped shapes corresponding to heads of persons who ride on the two-wheel vehicle from the contour shape of the upper position of the two-wheel vehicle, and determine, on the basis of the humped shapes, whether or not the number of the persons who ride on the two-wheel vehicle is at least two persons or more.

1 . A two-wheel vehicle riding person number determination system comprising:
 an imaging sensor configured to image a two-wheel vehicle that is installed in a predetermined position and travels on a road,   at least one processor, and   a memory coupled to the at least one processor;   wherein the at least one processor is configured to implement   a two-wheel vehicle riding person number determining unit configured to process an image of the imaging sensor, extract a contour shape of an upper position of the two-wheel vehicle that travels on the road, detect humped shapes corresponding to heads of persons who ride on the two-wheel vehicle from the contour shape of the upper position of the two-wheel vehicle, and determine, on a basis of the humped shapes, whether or not number of the persons who ride on the two-wheel vehicle is at least two persons or more.   
     
     
         2 . The two-wheel vehicle riding person number determination system according to  claim 1 , wherein
 from the contour shape of the upper position of the two-wheel vehicle, the two-wheel vehicle riding person number determining unit determines whether or not the number of persons who ride on the two-wheel vehicle is at least two persons or more, on the basis of the number of the humped shapes corresponding to the heads of the persons who ride on the two-wheel vehicle.   
     
     
         3 . The two-wheel vehicle riding person number determination system according to  claim 1 , wherein
 from the contour shape of the upper position of the two-wheel vehicle, the two-wheel vehicle riding person number determining unit determines the number of the persons who ride on the two-wheel vehicle, on the basis of the number of the humped shapes corresponding to the heads of the persons who ride on the two-wheel vehicle.   
     
     
         4 . The two-wheel vehicle riding person number determination system according to  claim 1 , wherein
 the two-wheel vehicle riding person number determining unit detects the humped shapes corresponding to the heads of the persons from shapes of valley portions of the contour shape in the upper position.   
     
     
         5 . The two-wheel vehicle riding person number determination system according to  claim 1 , wherein
 when it is determined that the number of the persons who ride on the two-wheel vehicle is at least two persons or more, the two-wheel vehicle riding person number determining unit reports results thereof.   
     
     
         6 . The two-wheel vehicle riding person number determination system according to  claim 1 , wherein
 the two-wheel vehicle riding person number determining unit specifies a vehicle body of the two-wheel vehicle from the image, and extracts the contour shape in the upper position from a region in which a horizontal width is set to a distance from vicinity of a driving seat of the vehicle body to a tail of the vehicle body and a vertical width is set to same height as that of the vehicle body, among upper images of the vehicle body.   
     
     
         7 . The two-wheel vehicle riding person number determination system according to  claim 1 , wherein
 the imaging sensor is installed in a position in a range in which an angle formed by a traveling direction in the road and a photographic direction is from 60 to 90 degrees.   
     
     
         8 . The two-wheel vehicle riding person number determination system according to  claim 1 , wherein
 the image is an image imaged in a range in which a depression angle in a photographic direction to a road surface is from 10 to 30 degrees.   
     
     
         9 . A two-wheel vehicle riding person number determination method, comprising:
 processing an image of an imaging device that images a road and extracting a contour shape in an upper position of a two-wheel vehicle that travels on the road, and   detecting humped shapes corresponding to heads of persons who ride on the two-wheel vehicle from the contour shape in the upper position of the two-wheel vehicle and determining, on a basis of the humped shapes, whether or not number of the persons who ride on the two-wheel vehicle is at least two persons or more.   
     
     
         10 . The two-wheel vehicle riding person number determination method according to  claim 9 , wherein
 from the contour shape in the upper position of the two-wheel vehicle, it is determined whether or not the number of the persons who ride on the two-wheel vehicle is at least two persons or more, on the basis of the number of the humped shapes corresponding to the heads of the persons who ride on the two-wheel vehicle.   
     
     
         11 . The two-wheel vehicle riding person number determination method according to  claim 9 , wherein
 from the contour shape in the upper position of the two-wheel vehicle, the number of the persons who ride on the two-wheel vehicle is determined on the basis of the number of the humped shapes corresponding to the heads of the persons who ride on the two-wheel vehicle.   
     
     
         12 . The two-wheel vehicle riding person number determination method according to  claim 9 , wherein
 from shapes of valley portions of the contour shape in the upper position, the humped shapes corresponding to the heads of the persons are detected.   
     
     
         13 . The two-wheel vehicle riding person number determination method according to  claim 9 , wherein
 when it is determined that the number of the persons who ride on the two-wheel vehicle is at least two persons or more, results thereof are reported.   
     
     
         14 . The two-wheel vehicle riding person number determination method according to  claim 9 , wherein
 the contour shape in the upper position is a contour shape in which a vehicle body of the two-wheel vehicle is specified from the image, and that is extracted from a region in which a horizontal width is set to a distance from vicinity of a driving seat of the vehicle body to a tail of the vehicle body and a vertical width is set to same height as that of the vehicle body among upper images of the vehicle body.   
     
     
         15 . The two-wheel vehicle riding person number determination method according to  claim 9 , wherein
 the image is an image imaged in a range in which an angle formed by a traveling direction in the road and a photographic direction is from 60 to 90 degrees.   
     
     
         16 . The two-wheel vehicle riding person number determination method according to  claim 9 , wherein
 the image is an image imaged in a range in which a depression angle in a photographic direction to a road surface is from 10 to 30 degrees.   
     
     
         17 . A two-wheel vehicle riding person number determination apparatus, comprising:
 at least one processor, and   a memory coupled to the at least one processor;   wherein the at least one processor is configured to implement   a two-wheel vehicle riding person number determining unit configured to process an image of an imaging device that images a road, extract a contour shape in an upper position of a two-wheel vehicle that travels on the road, detect humped shapes corresponding to heads of persons who ride on the two-wheel vehicle from the contour shape in the upper position of the two-wheel vehicle, and determine, on a basis of the humped shapes, whether or not number of the persons who ride on the two-wheel vehicle is at least two persons or more.   
     
     
         18 . (canceled)