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An Experiment with Reactive Data‐flow Tasking in Active Robot Vision
Author(s) -
RUTTEN E. P.,
MARCHAND E.,
CHAUMETTE F.
Publication year - 1997
Publication title -
software: practice and experience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 70
eISSN - 1097-024X
pISSN - 0038-0644
DOI - 10.1002/(sici)1097-024x(199705)27:5<599::aid-spe102>3.0.co;2-k
Subject(s) - computer science , visual servoing , robotics , artificial intelligence , robot , computer vision , data flow diagram , signal (programming language) , control engineering , programming language , engineering , database
This paper presents an experiment with the synchronous approach to reactive systems programming, and particularly the Signal language, applied to a significant problem in robot vision: active visual reconstruction. This application consists of the specification of a system dealing with various domains such as robot control, computer vision and transitions between different modes of control. It illustrates the adequacy in such domains of Signal, a data flow programming language and environment. The programming environment features tools for formal specification, analysis, consistency checking and code generation. Signal and its language‐level extension for task preemption Signal GTi are used at the different levels of the application: data‐flow function for the camera motion control (visual servoing), reconstruction method (in parallel to visual servoing, involving the dynamical processes), and reconstruction of complex scenes (with transitions between several robotics tasks). The combination of these levels constitutes a hybrid behavior with (sampled) continuous control and discrete transitions. These techniques are validated experimentally by an implementation on a robotic cell. © 1997 by John Wiley & Sons, Ltd.