3D-ZP + P-string：A spatio-temporal knowledge representation for the object successive appears and disappears

Abstract

In this paper, we propose a novel spatio-temporal knowledge representation called 3D ZP + P-string that is based on 3D Z-string. As a result of 3D Z-string, it cannot deal with the condition that an object appears and then disappears for more than one time. To solve this problem, we set the disappearance of the object as that object’ size is zero. And, we bring up the “&” to be a new operator. Therefore, it can HTrecordTH that an object appears and then disappears for more than one time. At the same time, we offer two search methods to find the specific frame. The first method, it can find out the spatial relationship between two objects in the Nth frame. The second method, it can find out the spatial relationship between objects that in which frame. These two methods can be offered to software developers. They can extend these methods for users to more convenient and powerful video search functions.