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...

Image representation plays an important role in image processing applications. Recently there has been a considerable interest in the use of quadtrees. This has led to the development of algorithms for performing image processing tasks as well as for performing converting between the quadtree and other representations. Common to these algorithms is a traversal of the tree and the performance of...

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...

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