Passenger counting system, passenger counting method and passenger counting program

摘要

A passenger counting system that can count correctly the number of persons present in a vehicle, including persons sitting on the back seat, is provided. The passenger counting system includes an image capturing device 11 which is arranged outside the vehicle and which captures an image of the vehicle from the lateral direction of the vehicle, an image acquisition unit 31 that controls the image capturing device 11 and acquires an image in which the inside of the vehicle is captured as an input image, a profile detection unit 32 that detects a profile of a person from a partial image obtained from the input image based on an image feature amount calculated by using the partial image and outputs a detection result, and a passenger number determination unit 33 that determines the number of persons present in the vehicle based on the detection result.

主权项

1. A passenger counting system comprising:
an image capturing device having a lens, the image capturing device being arranged outside a vehicle for capturing an image of the vehicle from a lateral direction of the vehicle; a frontal image capturing device having a lens, the frontal image capturing device being arranged outside the vehicle for capturing an image of the vehicle from a front direction of the vehicle; and a microprocessor including: an image acquisition unit that controls the image capturing device during passing timing of the vehicle and acquires an image in which the inside of the vehicle is captured as an input image; a frontal image acquisition unit that controls the frontal image capturing device during passing timing of the vehicle and acquires an image in which the inside of the vehicle is captured from the front direction as a front input image; a profile detection unit that detects a profile of a person from a partial image obtained from the input image based on an image feature amount calculated by using the partial image and outputs a detection result; a frontal face detection unit that detects a frontal face of a person from a partial image in the front input image based on image feature amount calculated by using the partial image obtained from the front input image and outputs a detection result; and a passenger number determination unit that determines the number of persons present in the vehicle based on the detection results, wherein the passenger number determination unit determines whether or not a seat position inside the vehicle of each partial image that is determined to include a profile of a person by the profile detection unit overlaps a seat position inside the vehicle of each partial image that is determined to include a frontal face of a person by the frontal face detection unit, determines a total number of seat positions where persons sit, and determines the number of persons present in the vehicle based on the total number of the seat positions.