Information processing apparatus, information processing method, and program

1 . An information processing apparatus comprising:

at least one memory storing instructions; and

at least one processor configured to execute the instructions to:

acquire image data of a predetermined space captured by a camera at a plurality of different times;

acquire CO2 data that is data about concentration of carbon dioxide, from a concentration sensor for measuring the concentration of carbon dioxide in the space to estimate a number of the persons based on the CO2 data;

acquire position data of a mobile terminal carried by each of the persons in the space to estimate person-to-person distance based on the position data;

generate measurement data including the person-to-person distance between persons, the number of the persons and moving speeds of the persons included in the image data;

set space data about a size of the space;

determine whether a state of density of the persons in the space is appropriate or not, based on the measurement data and the space data;

output information about a determination result from the determination; and

in a case where the state of density is determined to be not appropriate, prevent output of the determination result indicating that the state of density is appropriate, until after a predetermined period of time after the determination.

2 . The information processing apparatus according to claim 1 , wherein the at least one processor is further configured to execute the instructions to:

set reference data about the person-to-person distance in the space based on the space data; and

perform determination based on the measurement data and the reference data.

3 . The information processing apparatus according to claim 2 , wherein the at least one processor is further configured to execute the instructions to:

generate, as the measurement data, statistical data about the person-to-person distance; and

set the reference data corresponding to the statistical data for the space, based on the space data.

4 . The information processing apparatus according to claim 1 , wherein the at least one processor is further configured to execute the instructions to:

generate the measurement data including moving speeds of the persons; and

perform determination by taking the moving speeds into account.

5 . The information processing apparatus according to claim 2 , wherein the at least one processor is further configured to execute the instruction to set the reference data based on the measurement data for each of a plurality of different times.

6 . The information processing apparatus according to claim 1 , wherein the at least one processor is further configured to execute the instructions to:

generate estimated data by estimating the measurement data for a predetermined set time based on the measurement data for each of a plurality of different times before the set time; and

perform determination according to the estimated data, based on the estimated data and the space data.

7 . The information processing apparatus according to claim 6 , wherein the at least one processor is further configured to execute the instruction to estimate a degree of risk when a predetermined person enters the space at the set time, based on the determination result according to the estimated data.

8 . An information processing system including:

the information processing apparatus according to claim 1 ; and

an alert output apparatus for outputting an alert according to the determination result, in a case where the state of density in the space is not appropriate.

9 . An information processing method performed by a computer, the information processing method comprising:

acquiring image data of a predetermined space captured by a camera at a plurality of different times;

acquiring CO2 data that is data about concentration of carbon dioxide, from a concentration sensor for measuring the concentration of carbon dioxide in the space to estimate a number of the persons based on the CO2 data;

acquiring position data of a mobile terminal carried by each of the persons in the space to estimate person-to-person distance based on the position data;

generating measurement data by measuring the number and the person-to-person distance of persons, the number of the persons and moving speeds of the persons included in the image data;

setting space data about a size of the space;

determining whether a state of density of the persons in the space is appropriate or not, based on the measurement data and the space data;

outputting information about a result of the determination; and

in a case where the state of density is determined to be not appropriate, preventing output of the determination result indicating that the state of density is appropriate, until after a predetermined period of time after the determination.

10 . A non-transitory computer-readable medium storing a program for causing a computer to perform an information processing method including:

acquiring image data of a predetermined space captured by a camera at a plurality of different times;

acquiring CO2 data that is data about concentration of carbon dioxide, from a concentration sensor for measuring the concentration of carbon dioxide in the space to estimate a number of the persons based on the CO2 data;

acquiring position data of a mobile terminal carried by each of the persons in the space to estimate person-to-person distance based on the position data;

generating measurement data by measuring the number and the person-to-person distance of persons, the number of the persons and moving speeds of the persons included in the image data;

setting space data about a size of the space;

determining whether a state of density of the persons in the space is appropriate or not, based on the measurement data and the space data;

outputting information about a result of the determination; and

in a case where the state of density is determined to be not appropriate, preventing output of the determination result indicating that the state of density is appropriate, until after a predetermined period of time after the determination.