INFORMATION PROCESSING APPARATUS AND INFORMATION PROCESSING METHOD

• US 20100290671A1
• Filed: 04/14/2010
• Published: 11/18/2010
• Est. Priority Date: 05/13/2009
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Shimizu, Tomoyuki
• Granted Patent: US 8,634,589 B2
• Time in Patent Office: Days
• US Class Current: 382/103
• CPC Class Codes: G06T 2207/10016 Video; Image sequence
• CPC Class Codes: G06T 2207/30201 Face
• CPC Class Codes: G06T 2207/30241 Trajectory
• CPC Class Codes: G06T 7/246 using feature-based methods, e.g. the tracking of corners or segments
• CPC Class Codes: G06T 7/70 Determining position or orientation of objects or cameras camera calibration G06T7/80
• CPC Class Codes: G06V 20/52 Surveillance or monitoring of activities, e.g. for recognising suspicious objects recognising microscopic objects G06V20/69

Abstract

An association degree evaluation unit acquires pieces of position information of an image sensing apparatus at respective times within an adjacent time range to an imaging time of a designated image of those sensed by the image sensing apparatus. Furthermore, the association degree evaluation unit acquires pieces of position information of a moving object at the respective times within the adjacent time range. Then, the association degree evaluation unit calculates a similarity between routes of the image sensing apparatus and moving object based on the acquired position information group, and decides a degree of association between the designated image and moving object based on the calculated similarity. An associating unit registers information indicating the degree of association in association with the designated image.

Claims

1. An information processing apparatus comprising:

a first acquisition unit which acquires a plurality of pieces of position information of an image sensing apparatus at times adjacent to an imaging time of an image by the image sensing apparatus;

a second acquisition unit which acquires a plurality of pieces of position information of a moving object at the adjacent times;

a calculation unit which calculates a similarity between a route of the image sensing apparatus and a route of the moving object based on the plurality of pieces of position information of the image sensing apparatus and the plurality of pieces of position information of the moving object; and

a registration unit which registers as metadata of the image, when the similarity is higher than a pre-set threshold, information used to specify the moving object.

2. The apparatus according to claim 1, further comprising:

a first management unit which manages a plurality of pieces of position information of the image sensing apparatus for respective times; and

a second management unit which manages a plurality of pieces of position information of the moving object for respective times,

wherein said first acquisition unit acquires the plurality of pieces of position information of the image sensing apparatus at the adjacent times to the imaging time of the image by the image sensing apparatus from the plurality of pieces of position information managed by said first management unit, and

said second acquisition unit acquires the plurality of pieces of position information of the moving object at the adjacent times from the plurality of pieces of position information managed by said second management unit.

3. The apparatus according to claim 2, wherein said first management unit manages position information of the image sensing apparatus at the imaging time by the image sensing apparatus.

4. The apparatus according to claim 2, wherein said first management unit manages pieces of position information of the image sensing apparatus, which are measured periodically.

5. The apparatus according to claim 1, wherein said calculation unit calculates the similarity using an average value and a variance value of distances between the plurality of pieces of position information acquired by said first acquisition unit and the plurality of pieces of position information acquired by said second acquisition unit.

6. The apparatus according to claim 1, further comprising:

an accuracy calculation unit which calculates an accuracy when an object included in the image is recognized as the moving object; and

a correction unit which corrects the accuracy based on the similarity.

8. A computer-readable storage medium storing a computer program for making a computer function as respective units included in an information processing apparatus according to claim 1.

7. An information processing method comprising:

a first acquisition step of acquiring a plurality of pieces of position information of an image sensing apparatus at times adjacent to an imaging time of an image by the image sensing apparatus;

a second acquisition step of acquiring a plurality of pieces of position information of a moving object at the adjacent times;

a calculation step of calculating a similarity between a route of the image sensing apparatus and a route of the moving object based on the plurality of pieces of position information of the image sensing apparatus and the plurality of pieces of position information of the moving object; and

a registration step of registering as metadata of the image, when the similarity is higher than a pre-set threshold, information used to specify the moving object.