Since time immemorial, vision in general and images in particular have played an important and essential role in human life. Nowadays, the field of image processing also has numerous scientific, commercial, industrial and military applications. All these applications result from the interaction between fun- damental scientific research on the one hand, and the development of new and high-standard technology on the other hand. Regarding the scientific com- ponent, quite recently the scientific community became familiar with "fuzzy techniques" in image processing, which make use of the...