Movement identification apparatus

• US 20060093189A1
• Filed: 06/22/2005
• Published: 05/04/2006
• Est. Priority Date: 11/04/2004
• Status: Abandoned Application

• Current Assignee: Fuji Xerox Company Limited (Xerox Holdings Corp.)
• Original Assignee: Fuji Xerox Company Limited (Xerox Holdings Corp.)
• Inventors: Ikeda, Hitoshi, Maeda, Masahiro, Kato, Noriji
• Application Number:
  US11/157,797
• Publication Number:
  US 20060093189A1
• Time in Patent Office: Days
• US Class Current: 382/107
• CPC Class Codes: G06V 40/20 Movements or behaviour, e.g. gesture recognition recognition of facial expressions G06V40/16

Abstract

A movement identification apparatus, which identifies a movement of a moving body based on a moving picture obtained by a camera, includes a model holding unit that holds a movement model representing a feature of a movement of a movable portion of a reference moving body linked to a type of movement, a state detector that detects state information representing a movement of a movable portion of a target moving body identical to or the same as the obtained reference moving body in the moving picture, and a movement determination unit that determines a type of movement of the target moving body based on a similarity between the detected state information and the movement model.

Claims

1. A movement identification apparatus, which identifies a movement of a moving body based on a moving picture obtained by a camera, comprising:

a model holding unit that holds a movement model representing a feature of a movement of a movable portion of a reference moving body, the movement model is linked to a type of movement;

a state detector that detects state information representing a movement of a movable portion of a target moving body identical to or the same as the obtained reference moving body in the moving picture; and

a movement determination unit that determines a type of movement of the target moving body based on a similarity between the detected state information and the movement model.

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

a verification unit that accepts information to identify the target moving body,

wherein the movement determination unit determines the type of movement of the target moving body based on a similarity between the detected state information and a movement model of a reference moving body identical to the target moving body.

3. A movement model registration apparatus, which registers a movement model to be referred to identify a movement of a moving body based on a moving picture, comprising:

a state detector that detects state information representing a movement of a movable portion of the obtained moving body in the moving picture;

a model generator that generates a movement model representing a feature of the movement of the movable portion of the moving body from the detected state information; and

a model holding unit that holds the generated movement model linked to a movement type for the moving body.

4. The movement model registration apparatus according to claim 3,

wherein the model generator generates the movement model in accordance with a standard deviation in the state information.

5. The movement model registration apparatus according to claim 3, further comprising:

an operation unit that accepts a movement type from a user,

wherein the model holding unit holds the movement model linked to the movement type accepted by the operation unit.

6. A movement identification apparatus, which identifies a movement of a moving body based on a moving picture obtained by a camera, comprising:

a first state detector that detects state information representing a movement of a movable portion of a reference moving body obtained by the camera in a moving picture;

a model generator that generates a movement model representing a feature of the movement of the movable portion of the reference moving body from the detected state information;

a model holding unit that holds the generated movement model linked to a type of movement for the reference moving body;

a second state detector that detects state information representing a movement of a movable portion of a target moving body identical to or the same as the obtained reference moving body in the moving picture; and

a movement determination unit that determines a type of movement for the target moving body based on a similarity between the detected state information and the movement model.

7. A storage medium readable by a computer, the storage medium storing a program of instructions executable by the computer to perform a function for identifying a movement of a moving body based on a moving picture obtained by a camera, the function comprising the steps of:

detecting state information representing a movement of a movable portion of a target moving body obtained by the camera in a moving picture;

referring a model holding unit that stores a movement model representing a feature of a movement of a movable portion of a reference moving body identical to or the same as the target moving body linked to a type of movement; and

determining a type of movement of the target moving body based on a similarity between the detected state information and the movement model.

8. A storage medium readable by a computer, the storage medium storing a program of instructions executable by the computer to perform a function for registering a movement model to be referred to identify a movement of a moving body based on a moving picture, the function comprising the steps of:

detecting state information representing a movement of a movable portion of the obtained moving body in the moving picture;

generating a movement model representing a feature of the movement of the movable portion of the moving body from the detected state information; and

holding the generated movement model linked to a type of movement for the moving body.

9. A movement identification method, for identifying a movement of a moving body based on a moving picture obtained by a camera, comprising:

detecting state information representing a movement of a movable portion of a target moving body obtained by the camera in a moving picture;

referring a model holding unit that stores a movement model representing a feature of a movement of a movable portion of a reference moving body identical to or the same as the target moving body linked to a type of movement;

determining a type of movement of the target moving body based on a similarity between the detected state information and the movement model; and

outputting the determined type of movement.

10. A movement identification method, for identifying a movement of a moving body based on a moving picture photographed by a camera, comprising:

detecting state information representing a movement of a movable portion of the obtained moving body in the moving picture;

generating a movement model representing a feature of the movement of the movable portion of the moving body from the detected state information;

holding the generated movement model linked to a type of movement for the reference moving body;

detecting state information representing a movement of a movable portion of a target moving body identical to or the same as the obtained reference moving body in the moving picture;

determining a type of movement for the target moving body based on a similarity between the detected state information and the movement model of the reference moving body identical to or the same as the target moving body; and

outputting the determined type of movement.