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

• Main Authors: Ching-Hsin Huang, 黃敬欣
• Other Authors: Yeong-ren Jean
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/32357181464240795508

碩士 === 靜宜大學 === 資訊管理學系研究所 === 98 === The major objective of this research is to propose a new spatio-temporal knowledge representation called 3D Z+-string which extends the work of 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 record 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.