Monitoring device, monitoring method, and recording medium
To present a region which is not fully monitored, provided is a monitoring device comprising a detection means, an estimation means, a determination means, and a presentation means. The detection means detects a person from an image. The estimation means estimates a region which is being viewed by the person who is detected by the detection means. On the basis of the region estimated by the estimation means, the determination means determines a region which requires special attention within a monitoring area. The presentation means presents information indicating the region which requires special attention determined by the determination means.
1. A monitoring device comprising:
a memory; and
at least one processor coupled to the memory,
the at least one processor performing operations to:
detect a first person from an image;
estimate a first region that is being viewed by the first person, the first region having a population density higher than a threshold value; and
determine a second region that requires special attention within a monitoring area, the second region being other than the first region;
wherein
the at least one processor performing operations to:
detect a second person from the image; and
present information indicating the second region that requires special attention when the second person is detected in the second region.
2. The monitoring device according to claim 1 , wherein the at least one processor further performs operation to:
acquire the image from a monitoring camera that captures an image of the monitoring area.
3. The monitoring device according to claim 1 , wherein the at least one processor further performs operation to:
detect a particular person from the image, and
estimate a region that is being viewed by the particular person, using a sensor carried or worn by the particular person.
4. The monitoring device according to claim 1 , wherein the at least one processor further performs operation to:
further detect an object other than the person, and
determine a region within the monitoring area that is shielded from a line of sight of the person by the detected object, as not being viewed by the person.
5. The monitoring device according to claim 1 , wherein the at least one processor further performs operation to:
determine a region that is out of a field of view of the person and also out of a field of view of a monitoring camera that captures an image of the monitoring area, as the region that requires special attention.
6. The monitoring device according to claim 1 , wherein the at least one processor further performs operation to:
track the person, and
estimate the region that is being viewed by the person, based on a result of tracking the person.
7. The monitoring device according to claim 1 , wherein the at least one processor further performs operation to:
determine a line of sight of the person detected, and
estimate a field of view of the person, based on the determined line of sight of the person.
8. The monitoring device according to claim 7 , wherein the at least one processor further performs operation to:
determine the line of sight of the person, using an image from which the person detected.
9. The monitoring device according to claim 7 , wherein the at least one processor further performs operation to:
detect a particular person from the image, and
determine a line of sight of the particular person, using an image captured by a device carried or worn by the particular person.
10. The monitoring device according to claim 1 , wherein the at least one processor further performs operation to:
detect a particular person from the image,
notify the particular person detected that the monitoring area contains the region that requires special attention.
11. The monitoring device according to claim 1 , wherein the at least one processor further performs operation to:
display the region that requires special attention, on a display apparatus in an aspect different from aspects for other regions of the monitoring area.
12. A monitoring method comprising:
detecting a first person from an image;
estimating a first region that is being viewed by the first person, the first region having a population density higher than a threshold value; and
determining, a second region that requires special attention within a monitoring area, the second region being other than the first region;
wherein
the monitoring method comprises:
detecting a second person from the image; and
present information indicating the second region that requires special attention when the second person is detected in the second region.
13. A non-transitory computer-readable recording medium that stores a program for causing a computer to execute:
detecting a first person from an image;
estimating a first region that is being viewed by the first person, the first region having a population density higher than a threshold value; and
determining a second region that requires special attention within a monitoring area, the second region being other than the first region; and
wherein
the program causes the computer to execute:
detecting a second person from the image;
present information indicating the second region that requires special attention when the second person is detected in the second region.