Information Technology Reference
In-Depth Information
Fig. 5.10 Simulation of operations of the Belousov-Zhabotinsky medium
5.2.2.1 Excitable Regime
The most basic operations in image processing by a reaction-diffusion medium
functioning in an excitable regime are the two operations of contour enhancement
in the input image that can be defined as “contour(+)” and “contour(
)” (Fig.
5.10
).
It is easy to see that the contour enhanced at the image border is always distributed
in the area illuminated by light radiation. Therefore, in the case of contour(+) the
image contour diverges in the course of image evolution in the medium from its
center, while in the latter case the contour converges to the center of the image. The
choice of an operation is determined by entering positive or negative forms of the
