Information processing apparatus, control method therefor, and program

• US 20050116938A1
• Filed: 11/22/2004
• Published: 06/02/2005
• Est. Priority Date: 12/01/2003
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Hirota, Makoto, Ito, Masato
• Granted Patent: US 7,535,461 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 3/038 Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
• CPC Class Codes: G06F 3/0418 for error correction or compensation, e.g. based on parallax, calibration or alignment

Abstract

Input interpretation information describing rules for interpreting the intentions of inputs is held in an indication input interpretation grammar holding unit. An input to a coordinate input region is detected by a pen input detection unit. The intention of an input detected by referring to the input interpretation information is interpreted by a grammar parsing unit. The confidence score of the interpretation result is calculated by a confidence score calculation unit. A certainty-factor-attached N-best output unit outputs the interpretation result together with the confidence score.

Claims

1. An information processing apparatus comprising:

display control means for controlling to display a plurality of regions on a display area;

detection means for detecting an input to the display area;

calculation means for calculating confidence scores of the plurality of regions on the basis of a relationship between the region and the input detected by said detection means regardless of whether the input is included in the region; and

output means for outputting information corresponding to the region on the basis of the confidence score.

2. The apparatus according to claim 1, wherein

the input to the display area is an input point, and

said calculation means calculates the confidence score on the basis of a positional relationship between the region and an input position of the input point.

3. The apparatus according to claim 2, wherein said calculation means calculates the confidence score on the basis of the positional relationship and a size of the region.

4. The apparatus according to claim 3, wherein said calculation means further calculates the confidence score on the basis of a size of a smallest region among the plurality of regions.

5. The apparatus according to claim 2, further comprising determination means for determining whether the input position of the input point detected by said detection means falls inside or outside the region,

wherein said calculation means calculates the confidence score on the basis of the determination result obtained by said determination means.

6. The apparatus according to claim 2, further comprising decision means for deciding a representative point of the region,

wherein the positional relationship between the region and the input position of the input point detected by said detection means is a distance between the input position and the representative point decided by said decision means.

7. The apparatus according to claim 2, further comprising determination means for determining whether the input position of the input point detected by said detection means falls inside or outside the region,

wherein said calculation means converts the input position of the input point detected by said detection means in accordance with a shape of the processing target region and calculates the confidence score on the basis of a distance between the converted input position and a representative point of the processing target region.

8. The apparatus according to claim 2, further comprising:

determination means for determining whether the input position of the input point detected by said detection means falls inside or outside the region; and

decision means for deciding a representative point of the region,

wherein said calculation means inhibits calculation of the confidence score when the determination result obtained by said determination means indicates that the input position falls outside the processing target region, and a distance between the representative point of the processing target region and the input position is not less than a predetermined value.

9. The apparatus according to claim 2, further comprising second display control means for controlling to display information corresponding to the region on the basis of the confidence score output from said output means.

10. The apparatus according to claim 1, wherein

the input to the display area is an input to an input region, and

said calculation means calculates the confidence score on the basis of a positional relationship between the input region and the region.

11. The apparatus according to claim 1, wherein

the input to the display area is an input to an input region, and

said calculation means calculates the confidence score on the basis of a size of the region included in the input region.

12. The apparatus according to claim 10, further comprising decision means for deciding a representative point of the input region and a representative point of the region,

wherein said calculation means calculates the confidence score on the basis of a distance between the representative point of the input region and the representative point of the region.

13. The apparatus according to claim 1, further comprising reference means for referring to input interpretation information including a description concerning the plurality of regions,

wherein said calculation means calculates the confidence score on the basis of a relationship between the input and the region which is acquired by using the input interpretation information referred to by said reference means.

14. An information processing method comprising:

a display control step of controlling to display a plurality of regions on a display area;

a detection step of detecting an input to the display area;

a calculation step of calculating confidence scores of the plurality of regions on the basis of a relationship between the region and the input detected in the detection step regardless of whether the input is included in the region; and

an output step of outputting information corresponding to the region on the basis of the confidence score.

15. A program comprising:

a program code for a display control step of controlling to display a plurality of regions on a display area;

a program code for a detection step of detecting an input to the display area;

a program code for a program code for a calculation step of calculating confidence scores of the plurality of regions on the basis of a relationship between the region and the input detected in the detection step regardless of whether the input is included in the region; and

a program code for an output step of outputting information corresponding to the region on the basis of the confidence score.

16. A computer-readable storage medium storing a program defined in claim 15.