Pascal Ballet, Vincent Rodin and Jacques Tisseau.
A multiagent system for detecting concentric strias.
Applications of Digital Image Processing XX.
SPIE's Optical Sciences, Engineering And Instrumentation'97,
volume 3164, pages 659-666, San Diego, CA (USA), 27 July-1 August 1997.
Abstract:
We present a method for detecting concentric strias which can be found
in different natural 'objects'. One of the major problems encountered
during an automatic image processing is the lack of continuity perception
in strias.
We propose an approach to this continuity perception based on a multiagent
system made up of reactive agents. These agents can move around on their
environment which consists of an image made up of light and dark rings set
out concentrically.
Our multiagent system is made up of a set of agents named darkening agents
and lightening agents. These agents follow either the light rings or the dark
rings and act on the image. Their actions aim to reinforce the rings by
stressing the contrasts allowing, thus, a reliable detection of these rings,
even if they are discontinuous.
Each agent has three sensors allowing it to obtain information about the
environment. The sensor ar made up of unit sensors returning the value of
a pixel. The three sensors of an agent are:
- a unit sensor allowing the agent to know if it is located
on an already detected stria,
- two disk-shaped sensors made up of unit sensors. These two
sensors return the sum of their unit sensors. They are located in front of the
agent and distant one from the other.
Those two disk-shaped sensors are used for determining the movements of the
agent and, therefore, for detecting the rings. An agent, indeed, always tries
to move where the values returned by the senors is minimal.
The suggested multiagent system has shown great robustness and adaptability,
for it can detect strias, even if they are discontinuous and the image noisy.
Keywords:
Agent, Cooperation, Edge Detection, Multiagent system,
Parallel image processing.
[doi:10.1117/12.279576]
[Ballet97b.pdf]