Robot apparatus and control method thereof
A robot apparatus integrates individual recognition results received asynchronously and then passes the integrated information to a behavior module. Thus, handling of information in the behavior module is facilitated. Since information regarding recognized observation results is held as a memory, even if observation results are temporarily missing, it appears to an upper module that items are constantly there in perception. Accordingly, insusceptibility against recognizer errors and sensor noise is improved, so that a stable system that is not dependent on timing of notifications by recognizers is implemented. Thus, the robot apparatus integrates a plurality of recognition results from external environment and handles the integrated information as meaningful symbol information, allowing sophisticated behavior control.
1. A robot apparatus that operates in accordance with input information, comprising:
a plurality of recognition means for recognizing external environment;
target detecting means for detecting a target of perception by integrating recognition results from the plurality of recognition means for each target of perception, based on temporal and/or spatial relationship;
a target memory for storing each target detected by the target detecting means; and
behavior determining means for determining behavior of the robot apparatus based on each target stored in the target memory.
2. A robot apparatus according to claim 1 ,
wherein the target is described in terms of a plurality of recognition attributes.
3. A robot apparatus according to claim 1 ,
wherein the plurality of recognition attributes includes at least color information, voice information, and pattern information.
4. A robot apparatus according to claim 1 ,
wherein the target is a robot coordinate system that is set at a predetermined position of the robot apparatus.
5. A robot apparatus according to claim 1 ,
further comprising a garbage collector for deleting the target based on a predetermined condition.
6. A robot apparatus according to claim 1 ,
further comprising target associating means for determining relevance among the plurality of targets and linking targets with a high relevance with each other.
7. A robot apparatus according to claim 1 ,
further comprising an event memory for storing events generated in the external environment, in a time series, together with related target information,
wherein the behavior determining means determines behavior based on a target stored in the target memory and an event stored in the event memory.
8. A robot apparatus according to claim 1 ,
wherein the event includes one of appearance or disappearance of the target, a recognized word of speech, a conversation, and a result of an own behavior of the robot apparatus.
9. A method of controlling a robot apparatus that operates in accordance with input information, the method comprising:
a plurality of recognition steps of recognizing external environment;
a target detecting step of detecting a target of perception by integrating recognition results in the plurality of recognition steps for each target of perception, based on temporal and/or spatial relationship;
a target storing step of storing each target detected in the target detecting step; and
a behavior determining step of determining behavior of the robot apparatus based on each target stored in the target storing step.
10. A method of controlling a robot apparatus according to claim 9 ,
wherein the target is described in terms of a plurality of recognition attributes.
11. A method of controlling a robot apparatus according to claim 9 ,
wherein the plurality of recognition attributes includes at least color information, voice information, and pattern information.
12. A method of controlling a robot apparatus according to claim 9 ,
wherein the target is a robot coordinate system that is set at a predetermined position of the robot apparatus.
13. A method of controlling a robot apparatus according to claim 9 ,
further comprising a garbage collecting step of deleting the target based on a predetermined condition.
14. A method of controlling a robot apparatus according to claim 9 ,
further comprising a target associating step of determining relevance among the plurality of targets and linking targets with a high relevance with each other.
15. A method of controlling a robot apparatus according to claim 9 ,
further comprising an event storing step of storing events generated in the external environment, in a time series, together with related target information,
wherein behavior is determined in the behavior determining step based on a target stored in the target storing step and an event stored in the event storing step.
16. A method of controlling a robot apparatus according to claim 9 ,
wherein the event includes one of appearance or disappearance of the target, a recognized word of speech, a conversation, and a result of an own behavior of the robot apparatus.