Information acquisition apparatus

• US 20060022814A1
• Filed: 07/26/2005
• Published: 02/02/2006
• Est. Priority Date: 07/28/2004
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Iizuka, Yoshio, Nishimura, Naoki, Nogami, Atsushi
• Granted Patent: US 7,362,219 B2
• Time in Patent Office: Days
• US Class Current: 340/505
• CPC Class Codes: G06K 17/0022 arrangements or provisious for transferring data to distant stations, e.g. from a sensing device "transfer between computer elements G06F13/00 "; data-transmission H04L
• CPC Class Codes: G06K 7/10079 the collision being resolved in the spatial domain, e.g. temporary shields for blindfolding the interrogator in specific directions
• CPC Class Codes: G07C 9/25 using biometric data, e.g. fingerprints, iris scans or voice recognition
• CPC Class Codes: G07C 9/28 the pass enabling tracking or indicating presence
• CPC Class Codes: G08B 13/2417 having a radio frequency identification chip
• CPC Class Codes: G08B 13/248 EAS system combined with another detection technology, e.g. dual EAS and video or other presence detection system

Abstract

When a plurality of objects having RFID tags attached are to be read, an image sensing unit performs image sensing, and at the same time an RFID reader reads an RFID tag within the image sensing range. A characteristic quantity (external appearance model) of an object obtained from a database on the basis of ID data of the RFID tag is compared with a characteristic quantity obtained by image processing of the sensed image, thereby acquiring information unique to the object. The object is discriminably specified by superimposing the acquired unique information on the object in the sensed image.

Claims

1. An information acquisition apparatus having a sensing device configured to sense an object, and a reading device configured to read information of a tag attached to the object, comprising:

an extracting device configured to extract information concerning a characteristic of an object in an image sensed by said sensing device; and

a discrimination device configured to discriminate a position of the object corresponding to the information of the tag read by said reading device, on the basis of the information concerning the characteristic of the object in the sensed image extracted by said extracting device and the information of the tag read by said reading device.

2. The apparatus according to claim 1, further comprising a storage device configured to store the information of the tag attached to the object and predetermined information and the information concerning the characteristic of the object, such that the information of the tag corresponds to the information of the object,

wherein said discrimination device performs the discrimination on the basis of the information stored in said storage device.

3. The apparatus according to claim 1, further comprising a display device configured to display the object in the sensed image such that the object is discriminable by the predetermined information thereof, on the basis of the discrimination by said discrimination device.

4. The apparatus according to claim 1, wherein said extracting device extracts the information concerning the characteristic of the object in the sensed image by predetermined image processing.

5. The apparatus according to claim 4, wherein the information concerning the characteristic of the object is at least one of an edge, a color, a luminance, a texture, the presence/absence of a motion, a shape, and a distance between characteristic points.

6. The apparatus according to claim 1, wherein the predetermined information of the object is one of information unique to the object and one of a name and model number of the object.

7. The apparatus according to claim 3, wherein said display device makes discrimination possible by superimposing, on the object in the sensed image, the predetermined information for identifying the object.

8. The apparatus according to claim 3, wherein said display device comprises a designating device configured to designate switching between the predetermined information of the object, and switches display to another predetermined information when switching is designated by said designating device.

9. The apparatus according to claim 1, wherein on the basis of a radio field intensity which changes in accordance with a distance between said reading device and the tag of the object, the information concerning the characteristic of the object in the sensed image is enlarged or reduced.

10. The apparatus according to claim 1, wherein said reading device comprises an antenna having directivity corresponding to a sensing range of said sensing device.

11. The apparatus according to claim 1, further comprising a control device configured to control a sensing parameter of said sensing device and a read parameter of said reading device, such that a sensing range in which said sensing device senses an object matches a read range in which said reading device reads information of a tag.

12. The apparatus according to claim 11, wherein

said reading device comprises a directional antenna having directivity within a predetermined range centering around a viewing direction of said sensing device,

a direction range of said directional antenna is controllable as the read parameter, and a viewing angle or zooming magnification is controllable as the sensing parameter, and

said control device controls the direction range of said directional antenna by synchronizing the direction range with the viewing angle or zooming magnification.

13. The apparatus according to claim 11, wherein

said reading device comprises a directional antenna having directivity within a predetermined range centering around a viewing direction of said sensing device,

a focal distance is controllable as the sensing parameter, and an antenna output of said directional antenna is controllable as the read parameter, and

said control device controls the antenna output by synchronizing the antenna output with the focal distance.

14. An information acquisition apparatus processing method comprising:

an extraction step of extracting information concerning a characteristic of an object in a sensed image;

an identification step of identifying information of a tag attached to the object in the sensed image; and

a discrimination step of discriminating a position of the object corresponding to the information of the tag identified in the identification step, on the basis of the information concerning the characteristic of the object in the sensed image extracted in the extraction step, and the information of the tag identified in the identification step.

15. A program which causes a computer to execute the steps of an information acquisition apparatus processing method cited in claim 14.

16. A computer-readable recording medium which records a program cited in claim 15.