A novel in situ method for estimation of the carapace length of sheltering spiny lobsters, Panulirus japonicus, via stereo photography

We developed a practical and reliable non-invasive method for estimating the carapace length of the spiny lobster, Panulirus japonicus, hidden in shelters. The method estimated the carapace length (CL) from multiple reference body parts measured from images taken using compact stereo cameras, based on predetermined allometric relationships. Two versions of the method to estimate CL were tested, one from only non-sexual reference lengths (Method...