| 研究実績の概要 |
Our work on this project has focused on 3 main topics. (1) Field Data Collection: We conducted diving expeditions, collecting hundreds of natural images from diverse habitats, forming a robust environmental database. Okinawan cuttlefish (Sepia latimanus) live in shallow water around the island, inhabiting at least 3 general habitats: coral reef, sand/coral rubble, and rocks. The typical camouflage pattern the animals adopt depends on the habitat, but also on the local image features in a particular habitat. (2) Camouflage Observation: We recorded images and video of cuttlefish camouflaging within these environments. This proved to be very technically difficult, owing to the high quality of the animals’ camouflage and to the skittish nature of these animals. (3) Statistical Analysis: Ongoing work is analyzing the statistical structure of the underwater natural images and quantifying the nature of camouflage pattern matching with these image statistics. The greatest challenge we face currently is in determining an appropriately high dimensional and accurate metric for camouflage pattern matching.
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