System, information processing apparatus, and information processing method

1. A system, comprising:

a projection unit that projects an image on a projection object;

an image capturing unit that captures an image of a target object present in an optical path of projection light projected from the projection unit;

a detection unit that detects light reflected from the target object, based on a captured image captured by the image capturing unit;

a judging unit that judges position information of the target object in target space, between the target object and the projection object, that corresponds to the image projected by the projection unit, based on the captured image; and

an identification unit that identifies a projection area on the projection object in which the image is projected, based on the light reflected from the target object detected by the detection unit and the position information judged by the judging unit.

2. The system according to claim 1 , further comprising a determination unit that determines which position on the projection area the position information judged by the judging unit corresponds to, based on the light reflected from the target object detected by the detection unit.

3. The system according to claim 2 , further comprising an output control unit that performs control to output a calibration image for use in calibration processing which determines correspondence relation between a position of the target object in the target space and a position on the projection area, wherein

when the calibration image is projected on the projection object, the determination unit identifies a position on the projection area pointed by the target object based on the light reflected from the target object detected by the detection unit, and determines that the identified position on the projection area corresponds to the position information judged by the judging unit.

4. The system according to claim 3 , wherein the output control unit performs control to output the calibration image having different colors depending on positions on the projection area.

5. The system according to claim 4 , wherein the determination unit identifies the position on the projection area pointed by the target object, based on color of the light reflected from the target object detected by the detection unit.

6. The system according to claim 5 , wherein the determination unit identifies a position on the projection area that corresponds to the color of the light reflected from the target object detected by the detection unit as the position pointed by the target object.

7. The system according to claim 3 , wherein the output control unit performs control to output the calibration image in which a display position of a pattern image with luminance of a specified value on the projection area changes with time.

8. The system according to claim 7 , wherein the determination unit identifies the position of the projection area pointed by the target object, based on luminance of the light reflected from the target object detected by the detection unit.

9. The system according to claim 8 , wherein when the luminance of the light reflected from the target object detected by the detection unit is equal to or more than the specified value, the determination unit identifies the display position of the pattern image on the projection area obtained at that point of time as the position pointed by the target object.

10. An information processing apparatus, comprising:

a detection unit that detects light reflected from a target object, which is present in an optical path of projection light projected from an image projection apparatus which projects an image on a projection object, based on an image captured by an image capturing unit which captures an image of the target object;

a judging unit that judges position information of the target object in target space, between the target object and the projection object, that corresponds to the image projected by the image projection apparatus, based on the captured image; and

an identification unit that identifies a projection area on the projection object in which the image is projected, based on the light reflected from the target object detected by the detection unit and the position information judged by the judging unit.

11. The information processing apparatus according to claim 10 , further comprising a determination unit that determines which position on the projection area the position information judged by the judging unit corresponds to, based on the light reflected from the target object detected by the detection unit.

12. The information processing apparatus according to claim 11 , further comprising an output control unit that performs control to output a calibration image for use in calibration processing which determines correspondence relation between a position of the target object in the target space and a position on the projection area, wherein

when a calibration image for use in calibration processing which determines correspondence relation between a position of the target object in the target space and a position on the projection area is projected on the projection object, the determination unit identifies a position on the projection area pointed by the target object based on the light reflected from the target object detected by the detection unit, and determines that the identified position on the projection area corresponds to the position information judged by the judging unit.

13. The information processing apparatus according to claim 12 , wherein the output control unit performs control to output the calibration image having different colors depending on positions on the projection area.

14. The information processing apparatus according to claim 13 , wherein the determination unit identifies the position on the projection area pointed by the target object, based on color of the light reflected from the target object detected by the detection unit.

15. The information processing apparatus according to claim 14 , wherein the determination unit identifies a position on the projection area that corresponds to the color of the light reflected from the target object detected by the detection unit as the position pointed by the target object.

16. The information processing apparatus according to claim 12 , wherein the output control unit performs control to output the calibration image in which a display position of a pattern image with luminance of a specified value on the projection area changes with time.

17. The information processing apparatus according to claim 16 , wherein the determination unit identifies the position of the projection area pointed by the target object, based on luminance of the light reflected from the target object detected by the detection unit.

18. The information processing apparatus according to claim 17 , wherein when the luminance of the light reflected from the target object detected by the detection unit is equal to or more than the specified value, the determination unit identifies the display position of the pattern image on the projection area obtained at that point of time as the position pointed by the target object.

19. An information processing method, comprising:

detecting light reflected from a target object, which is present in an optical path of projection light projected from an image projection apparatus which projects an image on a projection object, based on a captured image captured by an image capturing unit which captures an image of the target object;

judging position information of the target object in target space, between the target object and the projection object, that corresponds to the image projected by the image projection apparatus, based on the captured image; and

identifying a projection area on the projection object in which the image is projected, based on the light reflected from the target object detected in the detecting and the position information judged by the judging.