A Unified Approach to the Change of Resolution: Space and Gray-Level
IEEE Transactions on Pattern Analysis and Machine Intelligence
Feature comparisons of vector fields using earth mover's distance
Proceedings of the conference on Visualization '98
The Earth Mover's Distance as a Metric for Image Retrieval
International Journal of Computer Vision
M-tree: An Efficient Access Method for Similarity Search in Metric Spaces
VLDB '97 Proceedings of the 23rd International Conference on Very Large Data Bases
VLDB '98 Proceedings of the 24rd International Conference on Very Large Data Bases
Introduction to MPEG-7: Multimedia Content Description Interface
Introduction to MPEG-7: Multimedia Content Description Interface
Searching notated polyphonic music using transportation distances
Proceedings of the 12th annual ACM international conference on Multimedia
Efficient EMD-based similarity search in multimedia databases via flexible dimensionality reduction
Proceedings of the 2008 ACM SIGMOD international conference on Management of data
Reference-based indexing for metric spaces with costly distance measures
The VLDB Journal — The International Journal on Very Large Data Bases
Robust Adaptable Video Copy Detection
SSTD '09 Proceedings of the 11th International Symposium on Advances in Spatial and Temporal Databases
On Low Distortion Embeddings of Statistical Distance Measures into Low Dimensional Spaces
DEXA '09 Proceedings of the 20th International Conference on Database and Expert Systems Applications
Finding top-k similar pairs of objects annotated with terms from an ontology
SSDBM'10 Proceedings of the 22nd international conference on Scientific and statistical database management
Efficiently finding similar objects on ontologies using earth mover's distance
DEXA'10 Proceedings of the 21st international conference on Database and expert systems applications: Part II
Relevance feedback for the Earth Mover's distance
AMR'09 Proceedings of the 7th international conference on Adaptive multimedia retrieval: understanding media and adapting to the user
A linear-time approximation of the earth mover's distance
Proceedings of the 20th ACM international conference on Information and knowledge management
Indexing the earth mover's distance using normal distributions
Proceedings of the VLDB Endowment
WS-Finder: a framework for similarity search of web services
ICSOC'12 Proceedings of the 10th international conference on Service-Oriented Computing
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Comparison of images requires a distance metric that is sensitive to the spatial location of objects and features. Such sensitive distance measures can, however, be computationally infeasible due to the high dimensionality of feature spaces coupled with the need to model the spatial structure of the images. We present a novel multi-resolution approach to indexing spatially sensitive distance measures. We derive practical lower bounds for the earth mover’s distance (EMD). Multiple levels of lower bounds, one for each resolution of the index structure, are incorporated into algorithms for answering range queries and k-NN queries, both by sequential scan and using an M-tree index structure. Experiments show that using the lower bounds reduces the running time of similarity queries by a factor of up to 36 compared to a sequential scan without lower bounds. Computing separately for each dimension of the feature vector yields a speedup of ~14. By combining the two techniques, similarity queries can be answered more than 500 times faster.