System and method for object re-identification

Patent metadata

Field	Value
Publication number	US-10248860-B2
Application number	US-201715814282-A
Country	US
Kind code	B2
Filing date	Nov 15, 2017
Priority date	Sep 30, 2014
Publication date	Apr 2, 2019
Grant date	Apr 2, 2019

Abstract

A method of identifying, with a camera, an object in an image of a scene, by determining the distinctiveness of each of a number of attributes of an object of interest, independent of the camera viewpoint, determining the detectability of each of the attributes based on the relative orientation of a candidate object in the image of the scene, determining a camera setting for viewing the candidate object based on the distinctiveness of an attribute, so as to increase the detectability of the attribute, and capturing an image of the candidate object with the camera setting to determine the confidence that the candidate object is the object of interest.

First claim

The invention claimed is:

1. A method of identifying, with a camera, an object in an image of a scene, the method comprising the steps of:
obtaining relative orientation of a candidate object to the camera;
selecting at least one of a plurality of attributes of the candidate object in accordance with the obtained relative orientation of the candidate object;
determining one of a head, an upper body, legs, and a whole body as a region of interest, the determined region of interest including the selected attribute;
operating a set of at least one of pan, tilt, and zoom corresponding to the determined region of interest so as to observe the selected attribute, and
identifying an object based on the result of the observation of the selected attribute.

2. The method according to claim 1 , wherein the plurality of attributes includes hair length, facial hair style, wearing beard, pants length, and wearing glasses.

3. The method according to claim 1 , wherein the obtained relative orientation is a predicted relative orientation based on an actuation time.

4. A tangible non-transitory computer readable storage medium, storing a computer executable software program for directing a processor to perform a method for identifying, with a camera, an object in an image of a scene, the method comprising the steps of:
obtaining relative orientation of a candidate object to the camera;
selecting at least one of a plurality of attributes of the candidate object in accordance with the obtained relative orientation of the candidate object;
determining one of a head, an upper body, legs, and a whole body as a region of interest, the determined region of interest including the selected attribute;
operating a set of at least one of pan, tilt, and zoom corresponding to the determined region of interest so as to observe the selected attribute, and identifying an object based on the result of the observation of the selected attribute.

5. The tangible non-transitory computer readable storage medium according to claim 4 , wherein the plurality of attributes includes hair length, facial hair style, wearing beard, pants length, and wearing glasses.

6. The tangible non-transitory computer readable storage medium according to claim 4 , wherein the obtained relative orientation is a predicted relative orientation based on an actuation time.

7. An apparatus for identifying, with a camera, an object in an image of a scene, the apparatus comprising:
the camera;
a processor; and
a computer readable storage device storing a computer executable software program for directing the processor to perform a method comprising the steps of:
obtaining relative orientation of a candidate object to the camera;
selecting at least one of a plurality of attributes of the candidate object in accordance with the obtained relative orientation of the candidate object;
determining one of a head, an upper body, legs, and a whole body as a region of interest, the determined region of interest including the selected attribute;
operating a set of at least one of pan, tilt, and zoom corresponding to the determined region of interest so as to observe the selected attribute, and
identifying an object based on the result of the observation of the selected attribute.

8. The apparatus according to claim 7 , wherein the plurality of attributes includes hair length, facial hair style, wearing beard, pants length, and wearing glasses.

9. The apparatus according to claim 7 , wherein the obtained relative orientation is a predicted relative orientation based on an actuation time.

10. The method according to claim 1 , wherein the obtained relative orientation is one of front view, profile view, and rear view.

11. The tangible non-transitory computer readable medium according to claim 4 , wherein the obtained relative orientation is one of front view, profile view, and rear view.

12. The apparatus according to claim 7 , wherein the obtained relative orientation is one of front view, profile view, and rear view.

Assignees

• Canon Kk

Inventors

• Mai fei
• Taylor Geoffrey Richard

Classifications

• H04N7/18

  Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast · CPC title

• G06V40/10 Primary

  Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands · CPC title

• G06F18/211

  Selection of the most significant subset of features · CPC title

• G06V10/24

  Aligning, centring, orientation detection or correction of the image · CPC title

• G06K9/66

  Physics · mapped topic