Application of digital image processing method for fish age estimation

摘要

In this paper, the study results on the fish age estimation issues, as an application of the method of digital imageprocessing, presented by analysis from otolith image. First, a kind of Artificial Neural Network (ANN), the Pulse-coupled Neural Networks (PCNN), is proposed, and used to identify the different summer or winter year-rings patterns.Second, a well-founded approach, using morphological features, is brought forwand to automatically detect the nucleuswithin the otolith images. Finally, the Morphological Method is used to deduce the fish's age. The results of this papermaybe significant in fishery research, and the methods can be used in other biologic features identify fields.