Mass multimedia data with geographical information (geo-multimedia) are collected and stored on the Internet due to wide application of location-based services (LBS). How find high-level semantic relationship between geo-multimedia construct efficient index is crucial for large-scale retrieval. To combat this challenge, paper proposes a deep cross-modal hashing framework retrieval, termed as Tr...

The size of five trie-based methods of sorting large collections of line segments in a spatial database is investigated analytically using a random lines image model and geometric probability techniques. The methods are based on sorting the line segments with respect to the space that they occupy. Since the space is two-dimensional, the trie is formed by interleaving the bits corresponding to t...

In this assignment you are required to implement an information management system for handling data similar to that used in VLSI (very large scale integration) as well as game programming applications. In such an environment the primary entities are small rectangles and the problem in which we are interested is how to manage a large collection of them. In the following we trace the development ...

In this assignment you are required to implement a system for handling data similar to that used in game programming. In such an environment the primary entities are small rectangles and the problem we are interested is how to manage a large collection of them. In the following we trace the development of a variant of the quadtree data structure that has been found to be useful for such problem...

This paper introduces a spatial indexing structure that adjusts itself so as to provide faster access to spatially referenced data most in demand. The structure is a hybrid of a splay tree and a quadtree. The quadtree is a well-known spatial data structure that successively segments a spatial data area into quadrants, preserving the spatial arrangement of the data. Access to data is based on a ...

In this assignment you are required to implement an information management system for handling data similar to that used in VLSI (very large scale integration) as well as game programming applications. In such an environment the primary entities are small rectangles and the problem in which we are interested is how to manage a large collection of them. In the following we trace the development ...

This report presents some results and findings of our work on very-lowbit-rate video compression systems using vector quantization (VQ). We have identified multiscale segmentation and variable-rate coding as two important concepts whose effective use can lead to superior compression performance. Two VQ algorithms that attempt to use these two aspects are presented: one based on residual vector ...

Quadtrees* Erik G. Hoel Hanan Samet Computer Science Department Computer Science Department Center for Automation Research Center for Automation Research Institute for Advanced Computer Sciences Institute for Advanced Computer Sciences University of Maryland University of Maryland College Park, Maryland 20742 College Park, Maryland 20742 Abstract Data-parallel primitives for performing operatio...