In order to help the public to recognize ornamental plants on the campus, an APP(application) used for recognition of ornamental plants by utilizing the laminas was designed based on the iOS operating system.The local SQLite database was established to store the feature data of the laminas and the attribute information of the plants related to campus culture. The images of the laminas of the plants were acquired by taking photos with iPhone, which were then converted to grey-scale maps. The OTSU method was ...