Gaming scheme using general mood information

1. A method performed under control of a computing device, comprising:

receiving from a raw database at least one set of facial expression data and at least one external factor including at least one of population density, weather conditions and event information, each of the at least one set of facial expression data being accompanied by time information and location information and being obtained from at least one image, the at least one image being captured by a camera installed at a fixed geographic area;

clustering the geographic area to form at least one cluster corresponding to general mood information determined based at least in part on the at least one set of facial expression data obtained from the at least one image captured by the camera installed at the fixed geographic area;

storing the at least one cluster and the at least one external factor in a map database corresponding to the geographic area;

obtaining a correlation between the at least one cluster and the at least one external factor; and

based on the obtained correlation, attaching information of how the general mood information changes according to the at least one external factor to the map database.

2. The method of claim 1 , wherein the at least one image is captured by the camera at a time corresponding to the time information and at a location corresponding to the location information.

3. The method of claim 1 , wherein the at least one image is captured by the camera for a predetermined period corresponding to the time information and at a location corresponding to the location information.

4. The method of claim 1 , wherein the general mood information is one that reveals an emotion.

5. The method of claim 1 , wherein the clustering includes a spatiotemporal clustering, and each of the at least one cluster includes temporal information and spatial information within the geographic area.

6. The method of claim 5 , wherein the storing includes attaching each of the at least one cluster to the map database based at least in part on the temporal information and the spatial information.

7. The method of claim 6 , further comprising:

determining a time and a location at which an actual position-based game is played; and

based on the determined time and location, determining the general mood information for the actual position-based game from the map database.

8. The method of claim 1 , wherein at least one of the raw database and the map database is stored in a cloud data center.

9. A method performed under control of a computing device, comprising:

receiving at least one image captured by at least one camera installed in a fixed geographic area;

obtaining at least one set of facial expression data from the at least one captured image, each of the at least one set of facial expression data being accompanied by time information and location information;

receiving at least one external factor including at least one of population density, weather conditions and event information;

clustering the geographic area to form at least one cluster corresponding to general mood information determined based at least in part on the at least one set of facial expression data obtained from the at least one captured image by the at least one camera installed in the fixed geographic area;

storing the at least one cluster and the at least one external factor in a map database corresponding to the geographic area;

obtaining a correlation between the at least one cluster and the at least one external factor; and

based on the obtained correlation, attaching information of how the general mood information changes according to the at least one external factor to the map database.

10. The method of claim 9 , wherein the general mood information is one that reveals an emotion.

11. The method of claim 9 , wherein the clustering includes a spatiotemporal clustering, and each of the at least one cluster includes temporal information and spatial information within the geographic area.

12. The method of claim 11 , wherein the storing includes attaching each of the at least one cluster to the map database based at least in part on the temporal information and the spatial information.

13. A computing device, comprising:

a receiving unit configured to receive from a raw database at least one set of facial expression data and at least one external factor including at least one of population density, weather conditions and event information, each of the at least one set of facial expression data being accompanied by time information and location information, wherein the each of the at least one set of facial expression data is obtained from at least one image captured by a camera installed at a fixed geographic area;

a clustering unit configured to perform a spatiotemporal clustering of the geographic area to form at least one cluster corresponding to general mood information determined based at least in part on the at least one set of facial expression data obtained from the at least one image captured by the camera installed in the fixed geographic area; and

a storing unit configured to:

store the at least one cluster and the at least one external factor in a map database corresponding to the geographic area;

obtain a correlation between the at least one cluster and the at least one external factor; and

based on the obtained correlation, attach information of how the general mood information changes according to the at least one external factor to the map database.

14. The computing device of claim 13 , wherein the at least one image is captured by the camera at a time corresponding to the time information and at a location corresponding to the location information.

15. The computing device of claim 13 , wherein the general mood information is one that reveals an emotion.

16. The computing device of claim 13 , wherein each of the at least one cluster includes temporal information and spatial information within the geographic area, and

wherein the storing unit is further configured to attach each of the at least one cluster to the map database based at least in part on the temporal information and the spatial information.

17. The computing device of claim 13 , wherein each of the at least one external factor relates to one of the at least one set of facial expression data.

18. The computing device of claim 13 , wherein at least one of the raw database and the map database is stored in a cloud data center.