Molecular image-processing devices based on chemical reaction systems. 5: Processing images with several levels of brightness and some application potentialities

Excitable media of Belousov–Zhabotinsky type were used for processing images with several levels of brightness. In this case the image-processing operations proved to be somewhat more complicated than in the case of black-and-white pictures. Excitable media seem to be useful tools for handling some practical applications such as aerial picture processing. Belousov–Zhabotinsky-type media are also simple and convenient experimental models for investigation of the information-processing capabilities of biomolecular systems with complicated non-linear dynamics. © 1997 John Wiley & Sons, Ltd.