INFORMATION PROCESSING APPARATUS, INFORMATION DISPLAY SYSTEM AND INFORMATION DISPLAY METHOD

• US 20130321312A1
• Filed: 05/28/2013
• Published: 12/05/2013
• Est. Priority Date: 05/29/2012
• Status: Active Grant

• Current Assignee: Ricoh Company Limited
• Original Assignee: Ricoh Company Limited
• Inventors: Miyazaki, Akira, HIGASHI, Haruomi
• Granted Patent: US 9,285,906 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 2203/04806 Zoom, i.e. interaction techniques or interactors for controlling the zooming operation
• CPC Class Codes: G06F 3/011 Arrangements for interaction with the human body, e.g. for user immersion in virtual reality blind teaching G09B21/00
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G09G 2320/0606 Manual adjustment
• CPC Class Codes: G09G 2340/045 Zooming at least part of an image, i.e. enlarging it or shrinking it
• CPC Class Codes: G09G 3/001 using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background slide projectors per se G03B23/00 = 42 HP

Abstract

An information processing apparatus include a position detecting unit that detects positions of a plurality of users existing in a detection target area; a calculating unit that calculates a plurality of feature quantities representing a relation between the positions of the users detected by the position detecting unit and a projection plane on which a projection image is projected; and a determining unit that determines display control processing for the projection image depending on the feature quantities calculated by the calculating unit.

Claims

1. An information processing apparatus, comprising:

a position detecting unit that detects positions of a plurality of users existing in a detection target area;

a calculating unit that calculates a plurality of feature quantities representing a relation between the positions of the users detected by the position detecting unit and a projection plane on which a projection image is projected; and

a determining unit that determines display control processing for the projection image depending on the feature quantities calculated by the calculating unit.

2. The information processing apparatus according to claim 1, further comprising a display control unit that controls display of the projection image on the projection plane in accordance with the display control processing determined by the determining unit.

3. The information processing apparatus according to claim 1, wherein

the calculating unit calculates distances between the positions of the users detected by the position detecting unit and the projection plane, as the feature quantities, and

the determining unit determines the display control processing for reducing the projection image when all of the distances calculated by the calculating unit are equal to or smaller than a given distance.

4. The information processing apparatus according to claim 1, wherein

the calculating unit calculates distances between the positions of the users detected by the position detecting unit and the projection plane, as the feature quantities, and

the determining unit determines the display control processing for enlarging the projection image when all of the distances calculated by the calculating unit are equal to or larger than a given distance.

5. The information processing apparatus according to claim 1, wherein

the calculating unit calculates, as the feature quantities, directions of the positions of the users detected by the position detecting unit, relative to the projection plane, based on the positions of the users in the detection target area, and

the determining unit determines the display control processing for the projection image depending on the directions of the positions of the users relative to the projection plane that are calculated by the calculating unit.

6. The information processing apparatus according to claim 5, wherein the determining unit determines, when the users exist at one end of the detection target area in the horizontal direction of the projection plane, the display control processing for performing keystone correction so that trapezoidal projection image is wider at either right or left side.

7. The information processing apparatus according to claim 5, wherein

the calculating unit calculates, as the feature quantities, a position of concentrated area where the users detected by the position detecting unit exist in a concentrated manner, relative to the projection plane, based on the positions of the users in the detection target area, and

the determining unit determines the display control processing for the projection image depending on the position of the concentrated area relative to the projection plane that are calculated by the calculating unit.

8. The information processing apparatus according to claim 7, wherein

the calculating unit calculates, when the concentrated area is reduced and a position of a user is detected outside the concentrated area but in the detection target area, a distance between the position of the user and the projection plane, as the feature quantity, and

the determining unit determines the display control processing for enlarging the projection image when the distance calculated by the calculating unit is equal to or smaller than a given distance.

9. The information processing apparatus according to claim 7, wherein

the calculating unit calculates, when the concentrated area is reduced and a position of a user is detected outside the concentrated areas but in the detection target area, a distance between the position of the user and the projection plane, as the feature quantity, and

the determining unit determines the display control processing for reducing the projection image when the distance calculated by the calculating unit is equal to or larger than a given distance.

10. The information processing apparatus according to claim 8, wherein

the position detecting unit detects an action of the user, and

the calculating unit calculates a distance between the user and the plane of projection when the action of the user detected by the position detecting unit is a predetermined given action.

11. The information processing apparatus according to claim 1, wherein the determining unit determines the display control processing for the projection image depending on presence or absence of the user in a predetermined specified area included in the detection target area.

12. An information display system including a detection device and an information processing apparatus, the information display system comprising:

a detection information detecting unit that detects detection information including information for detecting positions of a plurality of users existing in a detection target area;

a position detecting unit that detects positions of the users from the detection information;

a calculating unit that calculates a plurality of feature quantities representing a relation between the detected positions of the users and a projection plane on which a projection image is projected;

a determining unit that determines display control processing for the projection image depending on the calculated feature quantities; and

a display control unit that controls display of the projection image on the projection plane in accordance with the determined display control processing.

13. The information display system according to claim 12, wherein

the calculating unit calculates distances between the positions of the users detected by the position detecting unit and the projection plane, as the feature quantities, and

the determining unit determines the display control processing for reducing the projection image when all of the distances calculated by the calculating unit are equal to or smaller than a given distance.

14. The information display system according to claim 12, wherein

the calculating unit calculates distances between the positions of the users detected by the position detecting unit and the projection plane, as the feature quantities, and

the determining unit determines the display control processing for enlarging the projection image when all of the distances calculated by the calculating unit are equal to or larger than a given distance.

15. The information display system according to claim 12, wherein

the calculating unit calculates, as the feature quantities, directions of the positions of the users detected by the position detecting unit, relative to the projection plane, based on the positions of the users in the detection target area, and

the determining unit determines the display control processing for the projection image depending on the directions of the positions of the users relative to the projection plane that are calculated by the calculating unit.

16. The information display system according to claim 12, wherein the determining unit determines, when the users exist at one end of the detection target area in the horizontal direction of the projection plane, the display control processing for performing keystone correction so that trapezoidal projection image is wider at either right or left side.

17. The information display system according to claim 16, wherein

the calculating unit calculates, as the feature quantities, a position of concentrated area where the users detected by the position detecting unit exist in a concentrated manner, relative to the projection plane, based on the positions of the users in the detection target area, and

the determining unit determines the display control processing for the projection image depending on the position of the concentrated area relative to the projection plane that are calculated by the calculating unit.

18. The information display system according to claim 16, wherein the determining unit determines the display control processing for the projection image depending on presence or absence of the user in a predetermined specified area included in the detection target area.

19. An information display method comprising:

detecting detection information including information for detecting positions of a plurality of users existing in a detection target area;

detecting positions of the users from the detection information;

calculating a plurality of feature quantities representing a relation between the detected positions of the users and a projection plane on which a projection image is projected;

determining display control processing for the projection image depending on the calculated feature quantities; and

controlling display of the projection image on the projection plane in accordance with the determined display control processing.